Contact: Stephen Hemminger <sthemmin@microsoft.com>
Description: Monitor bit associated with channel
Users: Debugging tools and userspace drivers
+
+What: /sys/bus/vmbus/devices/vmbus_*/channels/NN/ring
+Date: January. 2018
+KernelVersion: 4.16
+Contact: Stephen Hemminger <sthemmin@microsoft.com>
+Description: Binary file created by uio_hv_generic for ring buffer
+Users: Userspace drivers
+What: /sys/bus/thunderbolt/devices/.../domainX/boot_acl
+Date: Jun 2018
+KernelVersion: 4.17
+Contact: thunderbolt-software@lists.01.org
+Description: Holds a comma separated list of device unique_ids that
+ are allowed to be connected automatically during system
+ startup (e.g boot devices). The list always contains
+ maximum supported number of unique_ids where unused
+ entries are empty. This allows the userspace software
+ to determine how many entries the controller supports.
+ If there are multiple controllers, each controller has
+ its own ACL list and size may be different between the
+ controllers.
+
+ System BIOS may have an option "Preboot ACL" or similar
+ that needs to be selected before this list is taken into
+ consideration.
+
+ Software always updates a full list in each write.
+
+ If a device is authorized automatically during boot its
+ boot attribute is set to 1.
+
What: /sys/bus/thunderbolt/devices/.../domainX/security
Date: Sep 2017
KernelVersion: 4.13
minimum. User needs to authorize each device.
dponly: Automatically tunnel Display port (and USB). No
PCIe tunnels are created.
+ usbonly: Automatically tunnel USB controller of the
+ connected Thunderbolt dock (and Display Port). All
+ PCIe links downstream of the dock are removed.
What: /sys/bus/thunderbolt/devices/.../authorized
Date: Sep 2017
the device did not contain a key at all, and
EKEYREJECTED if the challenge response did not match.
+What: /sys/bus/thunderbolt/devices/.../boot
+Date: Jun 2018
+KernelVersion: 4.17
+Contact: thunderbolt-software@lists.01.org
+Description: This attribute contains 1 if Thunderbolt device was already
+ authorized on boot and 0 otherwise.
+
What: /sys/bus/thunderbolt/devices/.../key
Date: Sep 2017
KernelVersion: 4.13
Description: Display the driver HBM protocol version.
The HBM protocol version supported by the driver.
+
+What: /sys/class/mei/meiN/tx_queue_limit
+Date: Jan 2018
+KernelVersion: 4.16
+Contact: Tomas Winkler <tomas.winkler@intel.com>
+Description: Configure tx queue limit
+
+ Set maximal number of pending writes
+ per opened session.
--- /dev/null
+What: /sys/bus/platform/devices/[..]/fsi-master-gpio/external_mode
+Date: Feb 2018
+KernelVersion: 4.17
+Contact: jk@ozlabs.org
+Description:
+ Controls access arbitration for GPIO-based FSI master. A
+ value of 0 (the default) sets normal mode, where the
+ driver performs FSI bus transactions, 1 sets external mode,
+ where the FSI bus is driven externally (for example, by
+ a debug device).
Security levels and how to use them
-----------------------------------
Starting with Intel Falcon Ridge Thunderbolt controller there are 4
-security levels available. The reason for these is the fact that the
-connected devices can be DMA masters and thus read contents of the host
-memory without CPU and OS knowing about it. There are ways to prevent
-this by setting up an IOMMU but it is not always available for various
-reasons.
+security levels available. Intel Titan Ridge added one more security level
+(usbonly). The reason for these is the fact that the connected devices can
+be DMA masters and thus read contents of the host memory without CPU and OS
+knowing about it. There are ways to prevent this by setting up an IOMMU but
+it is not always available for various reasons.
The security levels are as follows:
USB. No PCIe tunneling is done. In BIOS settings this is
typically called *Display Port Only*.
+ usbonly
+ The firmware automatically creates tunnels for the USB controller and
+ Display Port in a dock. All PCIe links downstream of the dock are
+ removed.
+
The current security level can be read from
``/sys/bus/thunderbolt/devices/domainX/security`` where ``domainX`` is
the Thunderbolt domain the host controller manages. There is typically
--- /dev/null
+Samsung micro-USB 11-pin connector
+==================================
+
+Samsung micro-USB 11-pin connector is an extension of micro-USB connector.
+It is present in multiple Samsung mobile devices.
+It has additional pins to route MHL traffic simultanously with USB.
+
+The bindings are superset of usb-connector bindings for micro-USB connector[1].
+
+Required properties:
+- compatible: must be: "samsung,usb-connector-11pin", "usb-b-connector",
+- type: must be "micro".
+
+Required nodes:
+- any data bus to the connector should be modeled using the OF graph bindings
+ specified in bindings/graph.txt, unless the bus is between parent node and
+ the connector. Since single connector can have multpile data buses every bus
+ has assigned OF graph port number as follows:
+ 0: High Speed (HS),
+ 3: Mobile High-Definition Link (MHL), specific to 11-pin Samsung micro-USB.
+
+[1]: bindings/connector/usb-connector.txt
+
+Example
+-------
+
+Micro-USB connector with HS lines routed via controller (MUIC) and MHL lines
+connected to HDMI-MHL bridge (sii8620):
+
+muic-max77843@66 {
+ ...
+ usb_con: connector {
+ compatible = "samsung,usb-connector-11pin", "usb-b-connector";
+ label = "micro-USB";
+ type = "micro";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@3 {
+ reg = <3>;
+ usb_con_mhl: endpoint {
+ remote-endpoint = <&sii8620_mhl>;
+ };
+ };
+ };
+ };
+};
--- /dev/null
+USB Connector
+=============
+
+USB connector node represents physical USB connector. It should be
+a child of USB interface controller.
+
+Required properties:
+- compatible: describes type of the connector, must be one of:
+ "usb-a-connector",
+ "usb-b-connector",
+ "usb-c-connector".
+
+Optional properties:
+- label: symbolic name for the connector,
+- type: size of the connector, should be specified in case of USB-A, USB-B
+ non-fullsize connectors: "mini", "micro".
+
+Required nodes:
+- any data bus to the connector should be modeled using the OF graph bindings
+ specified in bindings/graph.txt, unless the bus is between parent node and
+ the connector. Since single connector can have multpile data buses every bus
+ has assigned OF graph port number as follows:
+ 0: High Speed (HS), present in all connectors,
+ 1: Super Speed (SS), present in SS capable connectors,
+ 2: Sideband use (SBU), present in USB-C.
+
+Examples
+--------
+
+1. Micro-USB connector with HS lines routed via controller (MUIC):
+
+muic-max77843@66 {
+ ...
+ usb_con: connector {
+ compatible = "usb-b-connector";
+ label = "micro-USB";
+ type = "micro";
+ };
+};
+
+2. USB-C connector attached to CC controller (s2mm005), HS lines routed
+to companion PMIC (max77865), SS lines to USB3 PHY and SBU to DisplayPort.
+DisplayPort video lines are routed to the connector via SS mux in USB3 PHY.
+
+ccic: s2mm005@33 {
+ ...
+ usb_con: connector {
+ compatible = "usb-c-connector";
+ label = "USB-C";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ usb_con_hs: endpoint {
+ remote-endpoint = <&max77865_usbc_hs>;
+ };
+ };
+ port@1 {
+ reg = <1>;
+ usb_con_ss: endpoint {
+ remote-endpoint = <&usbdrd_phy_ss>;
+ };
+ };
+ port@2 {
+ reg = <2>;
+ usb_con_sbu: endpoint {
+ remote-endpoint = <&dp_aux>;
+ };
+ };
+ };
+ };
+};
--- /dev/null
+FSI bus & engine generic device tree bindings
+=============================================
+
+The FSI bus is probe-able, so the OS is able to enumerate FSI slaves, and
+engines within those slaves. However, we have a facility to match devicetree
+nodes to probed engines. This allows for fsi engines to expose non-probeable
+busses, which are then exposed by the device tree. For example, an FSI engine
+that is an I2C master - the I2C bus can be described by the device tree under
+the engine's device tree node.
+
+FSI masters may require their own DT nodes (to describe the master HW itself);
+that requirement is defined by the master's implementation, and is described by
+the fsi-master-* binding specifications.
+
+Under the masters' nodes, we can describe the bus topology using nodes to
+represent the FSI slaves and their slave engines. As a basic outline:
+
+ fsi-master {
+ /* top-level of FSI bus topology, bound to an FSI master driver and
+ * exposes an FSI bus */
+
+ fsi-slave@<link,id> {
+ /* this node defines the FSI slave device, and is handled
+ * entirely with FSI core code */
+
+ fsi-slave-engine@<addr> {
+ /* this node defines the engine endpoint & address range, which
+ * is bound to the relevant fsi device driver */
+ ...
+ };
+
+ fsi-slave-engine@<addr> {
+ ...
+ };
+
+ };
+ };
+
+Note that since the bus is probe-able, some (or all) of the topology may
+not be described; this binding only provides an optional facility for
+adding subordinate device tree nodes as children of FSI engines.
+
+FSI masters
+-----------
+
+FSI master nodes declare themselves as such with the "fsi-master" compatible
+value. It's likely that an implementation-specific compatible value will
+be needed as well, for example:
+
+ compatible = "fsi-master-gpio", "fsi-master";
+
+Since the master nodes describe the top-level of the FSI topology, they also
+need to declare the FSI-standard addressing scheme. This requires two cells for
+addresses (link index and slave ID), and no size:
+
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+An optional boolean property can be added to indicate that a particular master
+should not scan for connected devices at initialization time. This is
+necessary in cases where a scan could cause arbitration issues with other
+masters that may be present on the bus.
+
+ no-scan-on-init;
+
+FSI slaves
+----------
+
+Slaves are identified by a (link-index, slave-id) pair, so require two cells
+for an address identifier. Since these are not a range, no size cells are
+required. For an example, a slave on link 1, with ID 2, could be represented
+as:
+
+ cfam@1,2 {
+ reg = <1 2>;
+ [...];
+ }
+
+Each slave provides an address-space, under which the engines are accessible.
+That address space has a maximum of 23 bits, so we use one cell to represent
+addresses and sizes in the slave address space:
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+
+FSI engines (devices)
+---------------------
+
+Engines are identified by their address under the slaves' address spaces. We
+use a single cell for address and size. Engine nodes represent the endpoint
+FSI device, and are passed to those FSI device drivers' ->probe() functions.
+
+For example, for a slave using a single 0x400-byte page starting at address
+0xc00:
+
+ engine@c00 {
+ reg = <0xc00 0x400>;
+ };
+
+
+Full example
+------------
+
+Here's an example that illustrates:
+ - an FSI master
+ - connected to an FSI slave
+ - that contains an engine that is an I2C master
+ - connected to an I2C EEPROM
+
+The FSI master may be connected to additional slaves, and slaves may have
+additional engines, but they don't necessarily need to be describe in the
+device tree if no extra platform information is required.
+
+ /* The GPIO-based FSI master node, describing the top level of the
+ * FSI bus
+ */
+ gpio-fsi {
+ compatible = "fsi-master-gpio", "fsi-master";
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ /* A FSI slave (aka. CFAM) at link 0, ID 0. */
+ cfam@0,0 {
+ reg = <0 0>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /* FSI engine at 0xc00, using a single page. In this example,
+ * it's an I2C master controller, so subnodes describe the
+ * I2C bus.
+ */
+ i2c-controller@c00 {
+ reg = <0xc00 0x400>;
+
+ /* Engine-specific data. In this case, we're describing an
+ * I2C bus, so we're conforming to the generic I2C binding
+ */
+ compatible = "some-vendor,fsi-i2c-controller";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ /* I2C endpoint device: an Atmel EEPROM */
+ eeprom@50 {
+ compatible = "atmel,24c256";
+ reg = <0x50>;
+ pagesize = <64>;
+ };
+ };
+ };
+ };
};
};
+BMC Node Children
+==================
+
+
Host Node Children
==================
+LPC Host Interface Controller
+-------------------
+
+The LPC Host Interface Controller manages functions exposed to the host such as
+LPC firmware hub cycles, configuration of the LPC-to-AHB mapping, UART
+management and bus snoop configuration.
+
+Required properties:
+
+- compatible: One of:
+ "aspeed,ast2400-lpc-ctrl";
+ "aspeed,ast2500-lpc-ctrl";
+
+- reg: contains offset/length values of the host interface controller
+ memory regions
+
+- clocks: contains a phandle to the syscon node describing the clocks.
+ There should then be one cell representing the clock to use
+
+- memory-region: A phandle to a reserved_memory region to be used for the LPC
+ to AHB mapping
+
+- flash: A phandle to the SPI flash controller containing the flash to
+ be exposed over the LPC to AHB mapping
+
+Example:
+
+lpc-host@80 {
+ lpc_ctrl: lpc-ctrl@0 {
+ compatible = "aspeed,ast2500-lpc-ctrl";
+ reg = <0x0 0x80>;
+ clocks = <&syscon ASPEED_CLK_GATE_LCLK>;
+ memory-region = <&flash_memory>;
+ flash = <&spi>;
+ };
+};
+
LPC Host Controller
-------------------
"fsl,imx6ul-ocotp" (i.MX6UL),
"fsl,imx7d-ocotp" (i.MX7D/S),
followed by "syscon".
+- #address-cells : Should be 1
+- #size-cells : Should be 1
- reg: Should contain the register base and length.
- clocks: Should contain a phandle pointing to the gated peripheral clock.
Optional properties:
- read-only: disable write access
-Example:
+Optional Child nodes:
+
+- Data cells of ocotp:
+ Detailed bindings are described in bindings/nvmem/nvmem.txt
+Example:
ocotp: ocotp@21bc000 {
- compatible = "fsl,imx6q-ocotp", "syscon";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,imx6sx-ocotp", "syscon";
reg = <0x021bc000 0x4000>;
- clocks = <&clks IMX6QDL_CLK_IIM>;
- read-only;
+ clocks = <&clks IMX6SX_CLK_OCOTP>;
+
+ tempmon_calib: calib@38 {
+ reg = <0x38 4>;
+ };
+
+ tempmon_temp_grade: temp-grade@20 {
+ reg = <0x20 4>;
+ };
};
Device tree bindings for Low Power General Purpose Register found in i.MX6Q/D
-Secure Non-Volatile Storage.
+and i.MX7 Secure Non-Volatile Storage.
This DT node should be represented as a sub-node of a "syscon",
"simple-mfd" node.
- compatible: should be one of the fallowing variants:
"fsl,imx6q-snvs-lpgpr" for Freescale i.MX6Q/D/DL/S
"fsl,imx6ul-snvs-lpgpr" for Freescale i.MX6UL
+ "fsl,imx7d-snvs-lpgpr" for Freescale i.MX7D/S
Example:
snvs: snvs@020cc000 {
3) Network receive buffer region
4) Network send buffer region
+If a subchannel is created by a request to host, then the uio_hv_generic
+device driver will create a sysfs binary file for the per-channel ring buffer.
+For example:
+ /sys/bus/vmbus/devices/3811fe4d-0fa0-4b62-981a-74fc1084c757/channels/21/ring
+
Further information
===================
F: drivers/char/hw_random/
F: include/linux/hw_random.h
+HARDWARE TRACING FACILITIES
+M: Alexander Shishkin <alexander.shishkin@linux.intel.com>
+S: Maintained
+F: drivers/hwtracing/
+
HARDWARE SPINLOCK CORE
M: Ohad Ben-Cohen <ohad@wizery.com>
M: Bjorn Andersson <bjorn.andersson@linaro.org>
LINUX KERNEL DUMP TEST MODULE (LKDTM)
M: Kees Cook <keescook@chromium.org>
S: Maintained
-F: drivers/misc/lkdtm*
+F: drivers/misc/lkdtm/*
LINUX KERNEL MEMORY CONSISTENCY MODEL (LKMM)
M: Alan Stern <stern@rowland.harvard.edu>
BUILD_INTERRUPT3(hyperv_reenlightenment_vector, HYPERV_REENLIGHTENMENT_VECTOR,
hyperv_reenlightenment_intr)
+BUILD_INTERRUPT3(hv_stimer0_callback_vector, HYPERV_STIMER0_VECTOR,
+ hv_stimer0_vector_handler)
+
#endif /* CONFIG_HYPERV */
ENTRY(page_fault)
apicinterrupt3 HYPERV_REENLIGHTENMENT_VECTOR \
hyperv_reenlightenment_vector hyperv_reenlightenment_intr
+
+apicinterrupt3 HYPERV_STIMER0_VECTOR \
+ hv_stimer0_callback_vector hv_stimer0_vector_handler
#endif /* CONFIG_HYPERV */
idtentry debug do_debug has_error_code=0 paranoid=1 shift_ist=DEBUG_STACK
#endif
#if IS_ENABLED(CONFIG_HYPERV)
unsigned int irq_hv_reenlightenment_count;
+ unsigned int hyperv_stimer0_count;
#endif
} ____cacheline_aligned irq_cpustat_t;
#if IS_ENABLED(CONFIG_HYPERV)
#define HYPERV_REENLIGHTENMENT_VECTOR 0xee
+#define HYPERV_STIMER0_VECTOR 0xed
#endif
-#define LOCAL_TIMER_VECTOR 0xed
+#define LOCAL_TIMER_VECTOR 0xec
#define NR_VECTORS 256
void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);
+/*
+ * Routines for stimer0 Direct Mode handling.
+ * On x86/x64, there are no percpu actions to take.
+ */
+void hv_stimer0_vector_handler(struct pt_regs *regs);
+void hv_stimer0_callback_vector(void);
+int hv_setup_stimer0_irq(int *irq, int *vector, void (*handler)(void));
+void hv_remove_stimer0_irq(int irq);
+
+static inline void hv_enable_stimer0_percpu_irq(int irq) {}
+static inline void hv_disable_stimer0_percpu_irq(int irq) {}
+
+
#if IS_ENABLED(CONFIG_HYPERV)
extern struct clocksource *hyperv_cs;
extern void *hv_hypercall_pg;
/* Crash MSR available */
#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE (1 << 10)
+/* stimer Direct Mode is available */
+#define HV_X64_STIMER_DIRECT_MODE_AVAILABLE (1 << 19)
+
/*
* Feature identification: EBX indicates which flags were specified at
* partition creation. The format is the same as the partition creation
#if IS_ENABLED(CONFIG_HYPERV)
static void (*vmbus_handler)(void);
+static void (*hv_stimer0_handler)(void);
static void (*hv_kexec_handler)(void);
static void (*hv_crash_handler)(struct pt_regs *regs);
EXPORT_SYMBOL_GPL(hv_setup_vmbus_irq);
EXPORT_SYMBOL_GPL(hv_remove_vmbus_irq);
+/*
+ * Routines to do per-architecture handling of stimer0
+ * interrupts when in Direct Mode
+ */
+
+__visible void __irq_entry hv_stimer0_vector_handler(struct pt_regs *regs)
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ entering_irq();
+ inc_irq_stat(hyperv_stimer0_count);
+ if (hv_stimer0_handler)
+ hv_stimer0_handler();
+ ack_APIC_irq();
+
+ exiting_irq();
+ set_irq_regs(old_regs);
+}
+
+int hv_setup_stimer0_irq(int *irq, int *vector, void (*handler)(void))
+{
+ *vector = HYPERV_STIMER0_VECTOR;
+ *irq = 0; /* Unused on x86/x64 */
+ hv_stimer0_handler = handler;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(hv_setup_stimer0_irq);
+
+void hv_remove_stimer0_irq(int irq)
+{
+ /* We have no way to deallocate the interrupt gate */
+ hv_stimer0_handler = NULL;
+}
+EXPORT_SYMBOL_GPL(hv_remove_stimer0_irq);
+
void hv_setup_kexec_handler(void (*handler)(void))
{
hv_kexec_handler = handler;
alloc_intr_gate(HYPERV_REENLIGHTENMENT_VECTOR,
hyperv_reenlightenment_vector);
+ /* Setup the IDT for stimer0 */
+ if (ms_hyperv.misc_features & HV_X64_STIMER_DIRECT_MODE_AVAILABLE)
+ alloc_intr_gate(HYPERV_STIMER0_VECTOR,
+ hv_stimer0_callback_vector);
#endif
}
irq_stats(j)->irq_hv_reenlightenment_count);
seq_puts(p, " Hyper-V reenlightenment interrupts\n");
}
+ if (test_bit(HYPERV_STIMER0_VECTOR, system_vectors)) {
+ seq_printf(p, "%*s: ", prec, "HVS");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10u ",
+ irq_stats(j)->hyperv_stimer0_count);
+ seq_puts(p, " Hyper-V stimer0 interrupts\n");
+ }
#endif
seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
#if defined(CONFIG_X86_IO_APIC)
/**
* register_blkdev - register a new block device
*
- * @major: the requested major device number [1..255]. If @major = 0, try to
- * allocate any unused major number.
+ * @major: the requested major device number [1..BLKDEV_MAJOR_MAX-1]. If
+ * @major = 0, try to allocate any unused major number.
* @name: the name of the new block device as a zero terminated string
*
* The @name must be unique within the system.
*
* The return value depends on the @major input parameter:
*
- * - if a major device number was requested in range [1..255] then the
- * function returns zero on success, or a negative error code
+ * - if a major device number was requested in range [1..BLKDEV_MAJOR_MAX-1]
+ * then the function returns zero on success, or a negative error code
* - if any unused major number was requested with @major = 0 parameter
* then the return value is the allocated major number in range
- * [1..255] or a negative error code otherwise
+ * [1..BLKDEV_MAJOR_MAX-1] or a negative error code otherwise
+ *
+ * See Documentation/admin-guide/devices.txt for the list of allocated
+ * major numbers.
*/
int register_blkdev(unsigned int major, const char *name)
{
}
if (major >= BLKDEV_MAJOR_MAX) {
- pr_err("register_blkdev: major requested (%d) is greater than the maximum (%d) for %s\n",
- major, BLKDEV_MAJOR_MAX, name);
+ pr_err("register_blkdev: major requested (%u) is greater than the maximum (%u) for %s\n",
+ major, BLKDEV_MAJOR_MAX-1, name);
ret = -EINVAL;
goto out;
ret = -EBUSY;
if (ret < 0) {
- printk("register_blkdev: cannot get major %d for %s\n",
+ printk("register_blkdev: cannot get major %u for %s\n",
major, name);
kfree(p);
}
source "drivers/nvmem/Kconfig"
-source "drivers/hwtracing/stm/Kconfig"
-
-source "drivers/hwtracing/intel_th/Kconfig"
+source "drivers/hwtracing/Kconfig"
source "drivers/fpga/Kconfig"
config NVRAM
tristate "/dev/nvram support"
- depends on ATARI || X86 || (ARM && RTC_DRV_CMOS) || GENERIC_NVRAM
+ depends on ATARI || X86 || GENERIC_NVRAM
---help---
If you say Y here and create a character special file /dev/nvram
with major number 10 and minor number 144 using mknod ("man mknod"),
while (count > 0) {
unsigned long remaining;
- int allowed;
+ int allowed, probe;
sz = size_inside_page(p, count);
if (!ptr)
goto failed;
- err = probe_kernel_read(bounce, ptr, sz);
+ probe = probe_kernel_read(bounce, ptr, sz);
unxlate_dev_mem_ptr(p, ptr);
- if (err)
+ if (probe)
goto failed;
remaining = copy_to_user(buf, bounce, sz);
#define PCI_DEVICE_ID_XILLYBUS 0xebeb
-#define PCI_VENDOR_ID_ALTERA 0x1172
#define PCI_VENDOR_ID_ACTEL 0x11aa
#define PCI_VENDOR_ID_LATTICE 0x1204
*/
#include <linux/extcon-provider.h>
-#include <linux/extcon/extcon-gpio.h>
-#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
+/**
+ * struct gpio_extcon_data - A simple GPIO-controlled extcon device state container.
+ * @edev: Extcon device.
+ * @irq: Interrupt line for the external connector.
+ * @work: Work fired by the interrupt.
+ * @debounce_jiffies: Number of jiffies to wait for the GPIO to stabilize, from the debounce
+ * value.
+ * @gpiod: GPIO descriptor for this external connector.
+ * @extcon_id: The unique id of specific external connector.
+ * @debounce: Debounce time for GPIO IRQ in ms.
+ * @irq_flags: IRQ Flags (e.g., IRQF_TRIGGER_LOW).
+ * @check_on_resume: Boolean describing whether to check the state of gpio
+ * while resuming from sleep.
+ */
struct gpio_extcon_data {
struct extcon_dev *edev;
int irq;
struct delayed_work work;
unsigned long debounce_jiffies;
-
- struct gpio_desc *id_gpiod;
- struct gpio_extcon_pdata *pdata;
+ struct gpio_desc *gpiod;
+ unsigned int extcon_id;
+ unsigned long debounce;
+ unsigned long irq_flags;
+ bool check_on_resume;
};
static void gpio_extcon_work(struct work_struct *work)
container_of(to_delayed_work(work), struct gpio_extcon_data,
work);
- state = gpiod_get_value_cansleep(data->id_gpiod);
- if (data->pdata->gpio_active_low)
- state = !state;
-
- extcon_set_state_sync(data->edev, data->pdata->extcon_id, state);
+ state = gpiod_get_value_cansleep(data->gpiod);
+ extcon_set_state_sync(data->edev, data->extcon_id, state);
}
static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int gpio_extcon_init(struct device *dev, struct gpio_extcon_data *data)
-{
- struct gpio_extcon_pdata *pdata = data->pdata;
- int ret;
-
- ret = devm_gpio_request_one(dev, pdata->gpio, GPIOF_DIR_IN,
- dev_name(dev));
- if (ret < 0)
- return ret;
-
- data->id_gpiod = gpio_to_desc(pdata->gpio);
- if (!data->id_gpiod)
- return -EINVAL;
-
- if (pdata->debounce) {
- ret = gpiod_set_debounce(data->id_gpiod,
- pdata->debounce * 1000);
- if (ret < 0)
- data->debounce_jiffies =
- msecs_to_jiffies(pdata->debounce);
- }
-
- data->irq = gpiod_to_irq(data->id_gpiod);
- if (data->irq < 0)
- return data->irq;
-
- return 0;
-}
-
static int gpio_extcon_probe(struct platform_device *pdev)
{
- struct gpio_extcon_pdata *pdata = dev_get_platdata(&pdev->dev);
struct gpio_extcon_data *data;
+ struct device *dev = &pdev->dev;
int ret;
- if (!pdata)
- return -EBUSY;
- if (!pdata->irq_flags || pdata->extcon_id > EXTCON_NONE)
- return -EINVAL;
-
- data = devm_kzalloc(&pdev->dev, sizeof(struct gpio_extcon_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct gpio_extcon_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- data->pdata = pdata;
- /* Initialize the gpio */
- ret = gpio_extcon_init(&pdev->dev, data);
- if (ret < 0)
- return ret;
+ /*
+ * FIXME: extcon_id represents the unique identifier of external
+ * connectors such as EXTCON_USB, EXTCON_DISP_HDMI and so on. extcon_id
+ * is necessary to register the extcon device. But, it's not yet
+ * developed to get the extcon id from device-tree or others.
+ * On later, it have to be solved.
+ */
+ if (!data->irq_flags || data->extcon_id > EXTCON_NONE)
+ return -EINVAL;
+
+ data->gpiod = devm_gpiod_get(dev, "extcon", GPIOD_IN);
+ if (IS_ERR(data->gpiod))
+ return PTR_ERR(data->gpiod);
+ data->irq = gpiod_to_irq(data->gpiod);
+ if (data->irq <= 0)
+ return data->irq;
/* Allocate the memory of extcon devie and register extcon device */
- data->edev = devm_extcon_dev_allocate(&pdev->dev, &pdata->extcon_id);
+ data->edev = devm_extcon_dev_allocate(dev, &data->extcon_id);
if (IS_ERR(data->edev)) {
- dev_err(&pdev->dev, "failed to allocate extcon device\n");
+ dev_err(dev, "failed to allocate extcon device\n");
return -ENOMEM;
}
- ret = devm_extcon_dev_register(&pdev->dev, data->edev);
+ ret = devm_extcon_dev_register(dev, data->edev);
if (ret < 0)
return ret;
* Request the interrupt of gpio to detect whether external connector
* is attached or detached.
*/
- ret = devm_request_any_context_irq(&pdev->dev, data->irq,
- gpio_irq_handler, pdata->irq_flags,
+ ret = devm_request_any_context_irq(dev, data->irq,
+ gpio_irq_handler, data->irq_flags,
pdev->name, data);
if (ret < 0)
return ret;
struct gpio_extcon_data *data;
data = dev_get_drvdata(dev);
- if (data->pdata->check_on_resume)
+ if (data->check_on_resume)
queue_delayed_work(system_power_efficient_wq,
&data->work, data->debounce_jiffies);
#define CHT_WC_VBUS_GPIO_CTLO 0x6e2d
#define CHT_WC_VBUS_GPIO_CTLO_OUTPUT BIT(0)
+#define CHT_WC_VBUS_GPIO_CTLO_DRV_OD BIT(4)
+#define CHT_WC_VBUS_GPIO_CTLO_DIR_OUT BIT(5)
enum cht_wc_usb_id {
USB_ID_OTG,
{
int ret, val;
- val = enable ? CHT_WC_VBUS_GPIO_CTLO_OUTPUT : 0;
-
/*
* The 5V boost converter is enabled through a gpio on the PMIC, since
* there currently is no gpio driver we access the gpio reg directly.
*/
- ret = regmap_update_bits(ext->regmap, CHT_WC_VBUS_GPIO_CTLO,
- CHT_WC_VBUS_GPIO_CTLO_OUTPUT, val);
+ val = CHT_WC_VBUS_GPIO_CTLO_DRV_OD | CHT_WC_VBUS_GPIO_CTLO_DIR_OUT;
+ if (enable)
+ val |= CHT_WC_VBUS_GPIO_CTLO_OUTPUT;
+
+ ret = regmap_write(ext->regmap, CHT_WC_VBUS_GPIO_CTLO, val);
if (ret)
dev_err(ext->dev, "Error writing Vbus GPIO CTLO: %d\n", ret);
}
static const struct acpi_gpio_params mux_gpios = { INT3496_GPIO_USB_MUX, 0, false };
static const struct acpi_gpio_mapping acpi_int3496_default_gpios[] = {
- { "id-gpios", &id_gpios, 1 },
+ /*
+ * Some platforms have a bug in ACPI GPIO description making IRQ
+ * GPIO to be output only. Ask the GPIO core to ignore this limit.
+ */
+ { "id-gpios", &id_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION },
{ "vbus-gpios", &vbus_gpios, 1 },
{ "mux-gpios", &mux_gpios, 1 },
{ },
ret = PTR_ERR(data->gpio_usb_id);
dev_err(dev, "can't request USB ID GPIO: %d\n", ret);
return ret;
- } else if (gpiod_get_direction(data->gpio_usb_id) != GPIOF_DIR_IN) {
- dev_warn(dev, FW_BUG "USB ID GPIO not in input mode, fixing\n");
- gpiod_direction_input(data->gpio_usb_id);
}
data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);
EXPORT_SYMBOL_GPL(extcon_dev_unregister);
#ifdef CONFIG_OF
+
+/*
+ * extcon_find_edev_by_node - Find the extcon device from devicetree.
+ * @node : OF node identifying edev
+ *
+ * Return the pointer of extcon device if success or ERR_PTR(err) if fail.
+ */
+struct extcon_dev *extcon_find_edev_by_node(struct device_node *node)
+{
+ struct extcon_dev *edev;
+
+ mutex_lock(&extcon_dev_list_lock);
+ list_for_each_entry(edev, &extcon_dev_list, entry)
+ if (edev->dev.parent && edev->dev.parent->of_node == node)
+ goto out;
+ edev = ERR_PTR(-EPROBE_DEFER);
+out:
+ mutex_unlock(&extcon_dev_list_lock);
+
+ return edev;
+}
+
/*
* extcon_get_edev_by_phandle - Get the extcon device from devicetree.
* @dev : the instance to the given device
return ERR_PTR(-ENODEV);
}
- mutex_lock(&extcon_dev_list_lock);
- list_for_each_entry(edev, &extcon_dev_list, entry) {
- if (edev->dev.parent && edev->dev.parent->of_node == node) {
- mutex_unlock(&extcon_dev_list_lock);
- of_node_put(node);
- return edev;
- }
- }
- mutex_unlock(&extcon_dev_list_lock);
+ edev = extcon_find_edev_by_node(node);
of_node_put(node);
- return ERR_PTR(-EPROBE_DEFER);
+ return edev;
}
+
#else
+
+struct extcon_dev *extcon_find_edev_by_node(struct device_node *node)
+{
+ return ERR_PTR(-ENOSYS);
+}
+
struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev, int index)
{
return ERR_PTR(-ENOSYS);
}
+
#endif /* CONFIG_OF */
+
+EXPORT_SYMBOL_GPL(extcon_find_edev_by_node);
EXPORT_SYMBOL_GPL(extcon_get_edev_by_phandle);
/**
const struct pci_device_id *dev_id);
static void altera_cvp_remove(struct pci_dev *pdev);
-#define PCI_VENDOR_ID_ALTERA 0x1172
-
static struct pci_device_id altera_cvp_id_tbl[] = {
{ PCI_VDEVICE(ALTERA, PCI_ANY_ID) },
{ }
menuconfig FSI
tristate "FSI support"
+ depends on OF
select CRC4
---help---
FSI - the FRU Support Interface - is a simple bus for low-level
#include <linux/fsi.h>
#include <linux/idr.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/slab.h>
#include <linux/bitops.h>
{
struct fsi_device *device = to_fsi_dev(_device);
+ of_node_put(device->dev.of_node);
kfree(device);
}
if (rc)
return rc;
- dev_info(&slave->dev, "status: 0x%08x, sisc: 0x%08x\n",
+ dev_dbg(&slave->dev, "status: 0x%08x, sisc: 0x%08x\n",
be32_to_cpu(stat), be32_to_cpu(irq));
/* clear interrupts */
}
EXPORT_SYMBOL_GPL(fsi_slave_release_range);
+static bool fsi_device_node_matches(struct device *dev, struct device_node *np,
+ uint32_t addr, uint32_t size)
+{
+ unsigned int len, na, ns;
+ const __be32 *prop;
+ uint32_t psize;
+
+ na = of_n_addr_cells(np);
+ ns = of_n_size_cells(np);
+
+ if (na != 1 || ns != 1)
+ return false;
+
+ prop = of_get_property(np, "reg", &len);
+ if (!prop || len != 8)
+ return false;
+
+ if (of_read_number(prop, 1) != addr)
+ return false;
+
+ psize = of_read_number(prop + 1, 1);
+ if (psize != size) {
+ dev_warn(dev,
+ "node %s matches probed address, but not size (got 0x%x, expected 0x%x)",
+ of_node_full_name(np), psize, size);
+ }
+
+ return true;
+}
+
+/* Find a matching node for the slave engine at @address, using @size bytes
+ * of space. Returns NULL if not found, or a matching node with refcount
+ * already incremented.
+ */
+static struct device_node *fsi_device_find_of_node(struct fsi_device *dev)
+{
+ struct device_node *parent, *np;
+
+ parent = dev_of_node(&dev->slave->dev);
+ if (!parent)
+ return NULL;
+
+ for_each_child_of_node(parent, np) {
+ if (fsi_device_node_matches(&dev->dev, np,
+ dev->addr, dev->size))
+ return np;
+ }
+
+ return NULL;
+}
+
static int fsi_slave_scan(struct fsi_slave *slave)
{
uint32_t engine_addr;
dev_set_name(&dev->dev, "%02x:%02x:%02x:%02x",
slave->master->idx, slave->link,
slave->id, i - 2);
+ dev->dev.of_node = fsi_device_find_of_node(dev);
rc = device_register(&dev->dev);
if (rc) {
{
struct fsi_slave *slave = to_fsi_slave(dev);
+ of_node_put(dev->of_node);
kfree(slave);
}
+static bool fsi_slave_node_matches(struct device_node *np,
+ int link, uint8_t id)
+{
+ unsigned int len, na, ns;
+ const __be32 *prop;
+
+ na = of_n_addr_cells(np);
+ ns = of_n_size_cells(np);
+
+ /* Ensure we have the correct format for addresses and sizes in
+ * reg properties
+ */
+ if (na != 2 || ns != 0)
+ return false;
+
+ prop = of_get_property(np, "reg", &len);
+ if (!prop || len != 8)
+ return false;
+
+ return (of_read_number(prop, 1) == link) &&
+ (of_read_number(prop + 1, 1) == id);
+}
+
+/* Find a matching node for the slave at (link, id). Returns NULL if none
+ * found, or a matching node with refcount already incremented.
+ */
+static struct device_node *fsi_slave_find_of_node(struct fsi_master *master,
+ int link, uint8_t id)
+{
+ struct device_node *parent, *np;
+
+ parent = dev_of_node(&master->dev);
+ if (!parent)
+ return NULL;
+
+ for_each_child_of_node(parent, np) {
+ if (fsi_slave_node_matches(np, link, id))
+ return np;
+ }
+
+ return NULL;
+}
+
static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
{
uint32_t chip_id, llmode;
return -EIO;
}
- dev_info(&master->dev, "fsi: found chip %08x at %02x:%02x:%02x\n",
+ dev_dbg(&master->dev, "fsi: found chip %08x at %02x:%02x:%02x\n",
chip_id, master->idx, link, id);
rc = fsi_slave_set_smode(master, link, id);
slave->master = master;
slave->dev.parent = &master->dev;
+ slave->dev.of_node = fsi_slave_find_of_node(master, link, id);
slave->dev.release = fsi_slave_release;
slave->link = link;
slave->id = id;
/* FSI master support */
static int fsi_check_access(uint32_t addr, size_t size)
{
- if (size != 1 && size != 2 && size != 4)
- return -EINVAL;
-
- if ((addr & 0x3) != (size & 0x3))
+ if (size == 4) {
+ if (addr & 0x3)
+ return -EINVAL;
+ } else if (size == 2) {
+ if (addr & 0x1)
+ return -EINVAL;
+ } else if (size != 1)
return -EINVAL;
return 0;
device_for_each_child(&master->dev, NULL, fsi_master_remove_slave);
}
+int fsi_master_rescan(struct fsi_master *master)
+{
+ fsi_master_unscan(master);
+ return fsi_master_scan(master);
+}
+EXPORT_SYMBOL_GPL(fsi_master_rescan);
+
static ssize_t master_rescan_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct fsi_master *master = to_fsi_master(dev);
int rc;
- fsi_master_unscan(master);
- rc = fsi_master_scan(master);
+ rc = fsi_master_rescan(master);
if (rc < 0)
return rc;
int fsi_master_register(struct fsi_master *master)
{
int rc;
+ struct device_node *np;
if (!master)
return -EINVAL;
return rc;
}
- fsi_master_scan(master);
+ np = dev_of_node(&master->dev);
+ if (!of_property_read_bool(np, "no-scan-on-init"))
+ fsi_master_scan(master);
return 0;
}
#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
struct gpio_desc *gpio_trans; /* Voltage translator */
struct gpio_desc *gpio_enable; /* FSI enable */
struct gpio_desc *gpio_mux; /* Mux control */
+ bool external_mode;
};
#define CREATE_TRACE_POINTS
int rc;
spin_lock_irqsave(&master->cmd_lock, flags);
+
+ if (master->external_mode) {
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
+ return -EBUSY;
+ }
+
serial_out(master, cmd);
echo_delay(master);
rc = poll_for_response(master, slave, resp_len, resp);
static int fsi_master_gpio_break(struct fsi_master *_master, int link)
{
struct fsi_master_gpio *master = to_fsi_master_gpio(_master);
+ unsigned long flags;
if (link != 0)
return -ENODEV;
trace_fsi_master_gpio_break(master);
+ spin_lock_irqsave(&master->cmd_lock, flags);
+ if (master->external_mode) {
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
+ return -EBUSY;
+ }
set_sda_output(master, 1);
sda_out(master, 1);
clock_toggle(master, FSI_PRE_BREAK_CLOCKS);
echo_delay(master);
sda_out(master, 1);
clock_toggle(master, FSI_POST_BREAK_CLOCKS);
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
/* Wait for logic reset to take effect */
udelay(200);
clock_zeros(master, FSI_INIT_CLOCKS);
}
+static void fsi_master_gpio_init_external(struct fsi_master_gpio *master)
+{
+ gpiod_direction_output(master->gpio_mux, 0);
+ gpiod_direction_output(master->gpio_trans, 0);
+ gpiod_direction_output(master->gpio_enable, 1);
+ gpiod_direction_input(master->gpio_clk);
+ gpiod_direction_input(master->gpio_data);
+}
+
static int fsi_master_gpio_link_enable(struct fsi_master *_master, int link)
{
struct fsi_master_gpio *master = to_fsi_master_gpio(_master);
+ unsigned long flags;
+ int rc = -EBUSY;
if (link != 0)
return -ENODEV;
- gpiod_set_value(master->gpio_enable, 1);
- return 0;
+ spin_lock_irqsave(&master->cmd_lock, flags);
+ if (!master->external_mode) {
+ gpiod_set_value(master->gpio_enable, 1);
+ rc = 0;
+ }
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
+
+ return rc;
+}
+
+static ssize_t external_mode_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct fsi_master_gpio *master = dev_get_drvdata(dev);
+
+ return snprintf(buf, PAGE_SIZE - 1, "%u\n",
+ master->external_mode ? 1 : 0);
}
+static ssize_t external_mode_store(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct fsi_master_gpio *master = dev_get_drvdata(dev);
+ unsigned long flags, val;
+ bool external_mode;
+ int err;
+
+ err = kstrtoul(buf, 0, &val);
+ if (err)
+ return err;
+
+ external_mode = !!val;
+
+ spin_lock_irqsave(&master->cmd_lock, flags);
+
+ if (external_mode == master->external_mode) {
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
+ return count;
+ }
+
+ master->external_mode = external_mode;
+ if (master->external_mode)
+ fsi_master_gpio_init_external(master);
+ else
+ fsi_master_gpio_init(master);
+ spin_unlock_irqrestore(&master->cmd_lock, flags);
+
+ fsi_master_rescan(&master->master);
+
+ return count;
+}
+
+static DEVICE_ATTR(external_mode, 0664,
+ external_mode_show, external_mode_store);
+
static int fsi_master_gpio_probe(struct platform_device *pdev)
{
struct fsi_master_gpio *master;
struct gpio_desc *gpio;
+ int rc;
master = devm_kzalloc(&pdev->dev, sizeof(*master), GFP_KERNEL);
if (!master)
master->dev = &pdev->dev;
master->master.dev.parent = master->dev;
+ master->master.dev.of_node = of_node_get(dev_of_node(master->dev));
gpio = devm_gpiod_get(&pdev->dev, "clock", 0);
if (IS_ERR(gpio)) {
fsi_master_gpio_init(master);
+ rc = device_create_file(&pdev->dev, &dev_attr_external_mode);
+ if (rc)
+ return rc;
+
return fsi_master_register(&master->master);
}
devm_gpiod_put(&pdev->dev, master->gpio_mux);
fsi_master_unregister(&master->master);
+ of_node_put(master->master.dev.of_node);
+
return 0;
}
#include <linux/delay.h>
#include <linux/fsi.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/slab.h>
#include "fsi-master.h"
reg = be32_to_cpu(__reg);
links = (reg >> 8) & 0xff;
- dev_info(dev, "hub version %08x (%d links)\n", reg, links);
+ dev_dbg(dev, "hub version %08x (%d links)\n", reg, links);
rc = fsi_slave_claim_range(fsi_dev->slave, FSI_HUB_LINK_OFFSET,
FSI_HUB_LINK_SIZE * links);
hub->master.dev.parent = dev;
hub->master.dev.release = hub_master_release;
+ hub->master.dev.of_node = of_node_get(dev_of_node(dev));
hub->master.n_links = links;
hub->master.read = hub_master_read;
hub_master_init(hub);
rc = fsi_master_register(&hub->master);
- if (!rc)
- return 0;
+ if (rc)
+ goto err_release;
+
+ /* At this point, fsi_master_register performs the device_initialize(),
+ * and holds the sole reference on master.dev. This means the device
+ * will be freed (via ->release) during any subsequent call to
+ * fsi_master_unregister. We add our own reference to it here, so we
+ * can perform cleanup (in _remove()) without it being freed before
+ * we're ready.
+ */
+ get_device(&hub->master.dev);
+ return 0;
- kfree(hub);
err_release:
fsi_slave_release_range(fsi_dev->slave, FSI_HUB_LINK_OFFSET,
FSI_HUB_LINK_SIZE * links);
fsi_master_unregister(&hub->master);
fsi_slave_release_range(hub->upstream->slave, hub->addr, hub->size);
+ of_node_put(hub->master.dev.of_node);
+
+ /*
+ * master.dev will likely be ->release()ed after this, which free()s
+ * the hub
+ */
+ put_device(&hub->master.dev);
+
return 0;
}
#define dev_to_fsi_master(d) container_of(d, struct fsi_master, dev)
+/**
+ * fsi_master registration & lifetime: the fsi_master_register() and
+ * fsi_master_unregister() functions will take ownership of the master, and
+ * ->dev in particular. The registration path performs a get_device(), which
+ * takes the first reference on the device. Similarly, the unregistration path
+ * performs a put_device(), which may well drop the last reference.
+ *
+ * This means that master implementations *may* need to hold their own
+ * reference (via get_device()) on master->dev. In particular, if the device's
+ * ->release callback frees the fsi_master, then fsi_master_unregister will
+ * invoke this free if no other reference is held.
+ *
+ * The same applies for the error path of fsi_master_register; if the call
+ * fails, dev->release will have been invoked.
+ */
extern int fsi_master_register(struct fsi_master *master);
extern void fsi_master_unregister(struct fsi_master *master);
+extern int fsi_master_rescan(struct fsi_master *master);
+
#endif /* DRIVERS_FSI_MASTER_H */
#include <linux/clk.h>
#include <linux/delay.h>
+#include <linux/extcon.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/of_graph.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
struct edid *edid;
unsigned int gen2_write_burst:1;
enum sii8620_mt_state mt_state;
+ struct extcon_dev *extcon;
+ struct notifier_block extcon_nb;
+ struct work_struct extcon_wq;
+ int cable_state;
struct list_head mt_queue;
struct {
int r_size;
ctx->rc_dev = rc_dev;
}
+static void sii8620_cable_out(struct sii8620 *ctx)
+{
+ disable_irq(to_i2c_client(ctx->dev)->irq);
+ sii8620_hw_off(ctx);
+}
+
+static void sii8620_extcon_work(struct work_struct *work)
+{
+ struct sii8620 *ctx =
+ container_of(work, struct sii8620, extcon_wq);
+ int state = extcon_get_state(ctx->extcon, EXTCON_DISP_MHL);
+
+ if (state == ctx->cable_state)
+ return;
+
+ ctx->cable_state = state;
+
+ if (state > 0)
+ sii8620_cable_in(ctx);
+ else
+ sii8620_cable_out(ctx);
+}
+
+static int sii8620_extcon_notifier(struct notifier_block *self,
+ unsigned long event, void *ptr)
+{
+ struct sii8620 *ctx =
+ container_of(self, struct sii8620, extcon_nb);
+
+ schedule_work(&ctx->extcon_wq);
+
+ return NOTIFY_DONE;
+}
+
+static int sii8620_extcon_init(struct sii8620 *ctx)
+{
+ struct extcon_dev *edev;
+ struct device_node *musb, *muic;
+ int ret;
+
+ /* get micro-USB connector node */
+ musb = of_graph_get_remote_node(ctx->dev->of_node, 1, -1);
+ /* next get micro-USB Interface Controller node */
+ muic = of_get_next_parent(musb);
+
+ if (!muic) {
+ dev_info(ctx->dev, "no extcon found, switching to 'always on' mode\n");
+ return 0;
+ }
+
+ edev = extcon_find_edev_by_node(muic);
+ of_node_put(muic);
+ if (IS_ERR(edev)) {
+ if (PTR_ERR(edev) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dev_err(ctx->dev, "Invalid or missing extcon\n");
+ return PTR_ERR(edev);
+ }
+
+ ctx->extcon = edev;
+ ctx->extcon_nb.notifier_call = sii8620_extcon_notifier;
+ INIT_WORK(&ctx->extcon_wq, sii8620_extcon_work);
+ ret = extcon_register_notifier(edev, EXTCON_DISP_MHL, &ctx->extcon_nb);
+ if (ret) {
+ dev_err(ctx->dev, "failed to register notifier for MHL\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static inline struct sii8620 *bridge_to_sii8620(struct drm_bridge *bridge)
{
return container_of(bridge, struct sii8620, bridge);
if (ret)
return ret;
+ ret = sii8620_extcon_init(ctx);
+ if (ret < 0) {
+ dev_err(ctx->dev, "failed to initialize EXTCON\n");
+ return ret;
+ }
+
i2c_set_clientdata(client, ctx);
ctx->bridge.funcs = &sii8620_bridge_funcs;
ctx->bridge.of_node = dev->of_node;
drm_bridge_add(&ctx->bridge);
- sii8620_cable_in(ctx);
+ if (!ctx->extcon)
+ sii8620_cable_in(ctx);
return 0;
}
{
struct sii8620 *ctx = i2c_get_clientdata(client);
- disable_irq(to_i2c_client(ctx->dev)->irq);
- sii8620_hw_off(ctx);
+ if (ctx->extcon) {
+ extcon_unregister_notifier(ctx->extcon, EXTCON_DISP_MHL,
+ &ctx->extcon_nb);
+ flush_work(&ctx->extcon_wq);
+ if (ctx->cable_state > 0)
+ sii8620_cable_out(ctx);
+ } else {
+ sii8620_cable_out(ctx);
+ }
drm_bridge_remove(&ctx->bridge);
return 0;
+# SPDX-License-Identifier: GPL-2.0
+
menu "Microsoft Hyper-V guest support"
config HYPERV
obj-$(CONFIG_HYPERV_BALLOON) += hv_balloon.o
CFLAGS_hv_trace.o = -I$(src)
+CFLAGS_hv_balloon.o = -I$(src)
hv_vmbus-y := vmbus_drv.o \
hv.o connection.o channel.o \
/* PCIE */
{ .dev_type = HV_PCIE,
HV_PCIE_GUID,
- .perf_device = true,
+ .perf_device = false,
},
/* Synthetic Frame Buffer */
/*
* Starting with Win8, we can statically distribute the incoming
* channel interrupt load by binding a channel to VCPU.
- * We do this in a hierarchical fashion:
- * First distribute the primary channels across available NUMA nodes
- * and then distribute the subchannels amongst the CPUs in the NUMA
- * node assigned to the primary channel.
+ * We distribute the interrupt loads to one or more NUMA nodes based on
+ * the channel's affinity_policy.
*
* For pre-win8 hosts or non-performance critical channels we assign the
* first CPU in the first NUMA node.
#include <linux/vmalloc.h>
#include <linux/hyperv.h>
#include <linux/version.h>
-#include <linux/interrupt.h>
+#include <linux/random.h>
#include <linux/clockchips.h>
#include <asm/hyperv.h>
#include <asm/mshyperv.h>
.synic_initialized = false,
};
+/*
+ * If false, we're using the old mechanism for stimer0 interrupts
+ * where it sends a VMbus message when it expires. The old
+ * mechanism is used when running on older versions of Hyper-V
+ * that don't support Direct Mode. While Hyper-V provides
+ * four stimer's per CPU, Linux uses only stimer0.
+ */
+static bool direct_mode_enabled;
+static int stimer0_irq;
+static int stimer0_vector;
+
#define HV_TIMER_FREQUENCY (10 * 1000 * 1000) /* 100ns period */
#define HV_MAX_MAX_DELTA_TICKS 0xffffffff
#define HV_MIN_DELTA_TICKS 1
if (!hv_context.cpu_context)
return -ENOMEM;
+ direct_mode_enabled = ms_hyperv.misc_features &
+ HV_X64_STIMER_DIRECT_MODE_AVAILABLE;
return 0;
}
return status & 0xFFFF;
}
+/*
+ * ISR for when stimer0 is operating in Direct Mode. Direct Mode
+ * does not use VMbus or any VMbus messages, so process here and not
+ * in the VMbus driver code.
+ */
+
+static void hv_stimer0_isr(void)
+{
+ struct hv_per_cpu_context *hv_cpu;
+
+ hv_cpu = this_cpu_ptr(hv_context.cpu_context);
+ hv_cpu->clk_evt->event_handler(hv_cpu->clk_evt);
+ add_interrupt_randomness(stimer0_vector, 0);
+}
+
static int hv_ce_set_next_event(unsigned long delta,
struct clock_event_device *evt)
{
{
hv_init_timer(HV_X64_MSR_STIMER0_COUNT, 0);
hv_init_timer_config(HV_X64_MSR_STIMER0_CONFIG, 0);
+ if (direct_mode_enabled)
+ hv_disable_stimer0_percpu_irq(stimer0_irq);
return 0;
}
{
union hv_timer_config timer_cfg;
+ timer_cfg.as_uint64 = 0;
timer_cfg.enable = 1;
timer_cfg.auto_enable = 1;
- timer_cfg.sintx = VMBUS_MESSAGE_SINT;
+ if (direct_mode_enabled) {
+ /*
+ * When it expires, the timer will directly interrupt
+ * on the specified hardware vector/IRQ.
+ */
+ timer_cfg.direct_mode = 1;
+ timer_cfg.apic_vector = stimer0_vector;
+ hv_enable_stimer0_percpu_irq(stimer0_irq);
+ } else {
+ /*
+ * When it expires, the timer will generate a VMbus message,
+ * to be handled by the normal VMbus interrupt handler.
+ */
+ timer_cfg.direct_mode = 0;
+ timer_cfg.sintx = VMBUS_MESSAGE_SINT;
+ }
hv_init_timer_config(HV_X64_MSR_STIMER0_CONFIG, timer_cfg.as_uint64);
-
return 0;
}
int cpu;
hv_context.hv_numa_map = kzalloc(sizeof(struct cpumask) * nr_node_ids,
- GFP_ATOMIC);
+ GFP_KERNEL);
if (hv_context.hv_numa_map == NULL) {
pr_err("Unable to allocate NUMA map\n");
goto err;
INIT_LIST_HEAD(&hv_cpu->chan_list);
}
+ if (direct_mode_enabled &&
+ hv_setup_stimer0_irq(&stimer0_irq, &stimer0_vector,
+ hv_stimer0_isr))
+ goto err;
+
return 0;
err:
return -ENOMEM;
}
/*
- * hv_synic_init - Initialize the Synthethic Interrupt Controller.
+ * hv_synic_init - Initialize the Synthetic Interrupt Controller.
*
* If it is already initialized by another entity (ie x2v shim), we need to
* retrieve the initialized message and event pages. Otherwise, we create and
hv_get_synint_state(HV_X64_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
- shared_sint.as_uint64 = 0;
shared_sint.vector = HYPERVISOR_CALLBACK_VECTOR;
shared_sint.masked = false;
if (ms_hyperv.hints & HV_X64_DEPRECATING_AEOI_RECOMMENDED)
if (!(ms_hyperv.features & HV_X64_MSR_SYNTIMER_AVAILABLE))
return;
+ if (direct_mode_enabled)
+ hv_remove_stimer0_irq(stimer0_irq);
+
for_each_present_cpu(cpu) {
struct hv_per_cpu_context *hv_cpu
= per_cpu_ptr(hv_context.cpu_context, cpu);
#include <linux/hyperv.h>
+#define CREATE_TRACE_POINTS
+#include "hv_trace_balloon.h"
+
/*
* We begin with definitions supporting the Dynamic Memory protocol
* with the host.
static void post_status(struct hv_dynmem_device *dm);
#ifdef CONFIG_MEMORY_HOTPLUG
+static inline bool has_pfn_is_backed(struct hv_hotadd_state *has,
+ unsigned long pfn)
+{
+ struct hv_hotadd_gap *gap;
+
+ /* The page is not backed. */
+ if ((pfn < has->covered_start_pfn) || (pfn >= has->covered_end_pfn))
+ return false;
+
+ /* Check for gaps. */
+ list_for_each_entry(gap, &has->gap_list, list) {
+ if ((pfn >= gap->start_pfn) && (pfn < gap->end_pfn))
+ return false;
+ }
+
+ return true;
+}
+
+static unsigned long hv_page_offline_check(unsigned long start_pfn,
+ unsigned long nr_pages)
+{
+ unsigned long pfn = start_pfn, count = 0;
+ struct hv_hotadd_state *has;
+ bool found;
+
+ while (pfn < start_pfn + nr_pages) {
+ /*
+ * Search for HAS which covers the pfn and when we find one
+ * count how many consequitive PFNs are covered.
+ */
+ found = false;
+ list_for_each_entry(has, &dm_device.ha_region_list, list) {
+ while ((pfn >= has->start_pfn) &&
+ (pfn < has->end_pfn) &&
+ (pfn < start_pfn + nr_pages)) {
+ found = true;
+ if (has_pfn_is_backed(has, pfn))
+ count++;
+ pfn++;
+ }
+ }
+
+ /*
+ * This PFN is not in any HAS (e.g. we're offlining a region
+ * which was present at boot), no need to account for it. Go
+ * to the next one.
+ */
+ if (!found)
+ pfn++;
+ }
+
+ return count;
+}
+
static int hv_memory_notifier(struct notifier_block *nb, unsigned long val,
void *v)
{
struct memory_notify *mem = (struct memory_notify *)v;
- unsigned long flags;
+ unsigned long flags, pfn_count;
switch (val) {
case MEM_ONLINE:
case MEM_OFFLINE:
spin_lock_irqsave(&dm_device.ha_lock, flags);
- dm_device.num_pages_onlined -= mem->nr_pages;
+ pfn_count = hv_page_offline_check(mem->start_pfn,
+ mem->nr_pages);
+ if (pfn_count <= dm_device.num_pages_onlined) {
+ dm_device.num_pages_onlined -= pfn_count;
+ } else {
+ /*
+ * We're offlining more pages than we managed to online.
+ * This is unexpected. In any case don't let
+ * num_pages_onlined wrap around zero.
+ */
+ WARN_ON_ONCE(1);
+ dm_device.num_pages_onlined = 0;
+ }
spin_unlock_irqrestore(&dm_device.ha_lock, flags);
break;
case MEM_GOING_ONLINE:
/* Check if the particular page is backed and can be onlined and online it. */
static void hv_page_online_one(struct hv_hotadd_state *has, struct page *pg)
{
- unsigned long cur_start_pgp;
- unsigned long cur_end_pgp;
- struct hv_hotadd_gap *gap;
-
- cur_start_pgp = (unsigned long)pfn_to_page(has->covered_start_pfn);
- cur_end_pgp = (unsigned long)pfn_to_page(has->covered_end_pfn);
-
- /* The page is not backed. */
- if (((unsigned long)pg < cur_start_pgp) ||
- ((unsigned long)pg >= cur_end_pgp))
+ if (!has_pfn_is_backed(has, page_to_pfn(pg)))
return;
- /* Check for gaps. */
- list_for_each_entry(gap, &has->gap_list, list) {
- cur_start_pgp = (unsigned long)
- pfn_to_page(gap->start_pfn);
- cur_end_pgp = (unsigned long)
- pfn_to_page(gap->end_pfn);
- if (((unsigned long)pg >= cur_start_pgp) &&
- ((unsigned long)pg < cur_end_pgp)) {
- return;
- }
- }
-
/* This frame is currently backed; online the page. */
__online_page_set_limits(pg);
__online_page_increment_counters(pg);
(HA_CHUNK << PAGE_SHIFT));
if (ret) {
- pr_warn("hot_add memory failed error is %d\n", ret);
+ pr_err("hot_add memory failed error is %d\n", ret);
if (ret == -EEXIST) {
/*
* This error indicates that the error
static void hv_online_page(struct page *pg)
{
struct hv_hotadd_state *has;
- unsigned long cur_start_pgp;
- unsigned long cur_end_pgp;
unsigned long flags;
+ unsigned long pfn = page_to_pfn(pg);
spin_lock_irqsave(&dm_device.ha_lock, flags);
list_for_each_entry(has, &dm_device.ha_region_list, list) {
- cur_start_pgp = (unsigned long)
- pfn_to_page(has->start_pfn);
- cur_end_pgp = (unsigned long)pfn_to_page(has->end_pfn);
-
/* The page belongs to a different HAS. */
- if (((unsigned long)pg < cur_start_pgp) ||
- ((unsigned long)pg >= cur_end_pgp))
+ if ((pfn < has->start_pfn) || (pfn >= has->end_pfn))
continue;
hv_page_online_one(has, pg);
resp.result = 0;
if (!do_hot_add || (resp.page_count == 0))
- pr_info("Memory hot add failed\n");
+ pr_err("Memory hot add failed\n");
dm->state = DM_INITIALIZED;
resp.hdr.trans_id = atomic_inc_return(&trans_id);
break;
default:
- pr_info("Received Unknown type: %d\n", info_hdr->type);
+ pr_warn("Received Unknown type: %d\n", info_hdr->type);
}
}
dm->num_pages_added - dm->num_pages_onlined : 0) +
compute_balloon_floor();
+ trace_balloon_status(status.num_avail, status.num_committed,
+ vm_memory_committed(), dm->num_pages_ballooned,
+ dm->num_pages_added, dm->num_pages_onlined);
/*
* If our transaction ID is no longer current, just don't
* send the status. This can happen if we were interrupted
/*
* Free up the memory we allocatted.
*/
- pr_info("Balloon response failed\n");
+ pr_err("Balloon response failed\n");
for (i = 0; i < bl_resp->range_count; i++)
free_balloon_pages(&dm_device,
struct dm_capabilities_resp_msg *cap_resp)
{
if (!cap_resp->is_accepted) {
- pr_info("Capabilities not accepted by host\n");
+ pr_err("Capabilities not accepted by host\n");
dm->state = DM_INIT_ERROR;
}
complete(&dm->host_event);
break;
default:
- pr_err("Unhandled message: type: %d\n", dm_hdr->type);
+ pr_warn("Unhandled message: type: %d\n", dm_hdr->type);
}
}
+// SPDX-License-Identifier: GPL-2.0
+
#include "hyperv_vmbus.h"
#define CREATE_TRACE_POINTS
+// SPDX-License-Identifier: GPL-2.0
+
#undef TRACE_SYSTEM
#define TRACE_SYSTEM hyperv
--- /dev/null
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM hyperv
+
+#if !defined(_HV_TRACE_BALLOON_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _HV_TRACE_BALLOON_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(balloon_status,
+ TP_PROTO(u64 available, u64 committed,
+ unsigned long vm_memory_committed,
+ unsigned long pages_ballooned,
+ unsigned long pages_added,
+ unsigned long pages_onlined),
+ TP_ARGS(available, committed, vm_memory_committed,
+ pages_ballooned, pages_added, pages_onlined),
+ TP_STRUCT__entry(
+ __field(u64, available)
+ __field(u64, committed)
+ __field(unsigned long, vm_memory_committed)
+ __field(unsigned long, pages_ballooned)
+ __field(unsigned long, pages_added)
+ __field(unsigned long, pages_onlined)
+ ),
+ TP_fast_assign(
+ __entry->available = available;
+ __entry->committed = committed;
+ __entry->vm_memory_committed = vm_memory_committed;
+ __entry->pages_ballooned = pages_ballooned;
+ __entry->pages_added = pages_added;
+ __entry->pages_onlined = pages_onlined;
+ ),
+ TP_printk("available %lld, committed %lld; vm_memory_committed %ld;"
+ " pages_ballooned %ld, pages_added %ld, pages_onlined %ld",
+ __entry->available, __entry->committed,
+ __entry->vm_memory_committed, __entry->pages_ballooned,
+ __entry->pages_added, __entry->pages_onlined
+ )
+ );
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE hv_trace_balloon
+#endif /* _HV_TRACE_BALLOON_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
u64 periodic:1;
u64 lazy:1;
u64 auto_enable:1;
- u64 reserved_z0:12;
+ u64 apic_vector:8;
+ u64 direct_mode:1;
+ u64 reserved_z0:3;
u64 sintx:4;
u64 reserved_z1:44;
};
--- /dev/null
+menu "HW tracing support"
+
+source "drivers/hwtracing/stm/Kconfig"
+
+source "drivers/hwtracing/intel_th/Kconfig"
+
+endmenu
}
pc = debug_adjust_pc(drvdata);
- dev_emerg(dev, " EDPCSR: [<%p>] %pS\n", (void *)pc, (void *)pc);
+ dev_emerg(dev, " EDPCSR: [<%px>] %pS\n", (void *)pc, (void *)pc);
if (drvdata->edcidsr_present)
dev_emerg(dev, " EDCIDSR: %08x\n", drvdata->edcidsr);
*/
for (j = 0; j < 8; j++) {
if (maskbyte & 1)
- config->ctxid_pid[i] &= ~(0xFF << (j * 8));
+ config->ctxid_pid[i] &= ~(0xFFUL << (j * 8));
maskbyte >>= 1;
}
/* Select the next ctxid comparator mask value */
*/
for (j = 0; j < 8; j++) {
if (maskbyte & 1)
- config->vmid_val[i] &= ~(0xFF << (j * 8));
+ config->vmid_val[i] &= ~(0xFFUL << (j * 8));
maskbyte >>= 1;
}
/* Select the next vmid comparator mask value */
Say Y here to enable PCI Intel TH support.
+config INTEL_TH_ACPI
+ tristate "Intel(R) Trace Hub ACPI controller"
+ depends on ACPI
+ help
+ Intel(R) Trace Hub may exist as an ACPI device. This option enables
+ support glue layer for ACPI-based Intel TH. This typically implies
+ 'host debugger' mode, that is, the trace configuration and capture
+ is handled by an external debug host and corresponding controls will
+ not be available on the target.
+
+ Say Y here to enable ACPI Intel TH support.
+
config INTEL_TH_GTH
tristate "Intel(R) Trace Hub Global Trace Hub"
help
obj-$(CONFIG_INTEL_TH_PCI) += intel_th_pci.o
intel_th_pci-y := pci.o
+obj-$(CONFIG_INTEL_TH_ACPI) += intel_th_acpi.o
+intel_th_acpi-y := acpi.o
+
obj-$(CONFIG_INTEL_TH_GTH) += intel_th_gth.o
intel_th_gth-y := gth.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intel(R) Trace Hub ACPI driver
+ *
+ * Copyright (C) 2017 Intel Corporation.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+
+#include "intel_th.h"
+
+#define DRIVER_NAME "intel_th_acpi"
+
+static const struct intel_th_drvdata intel_th_acpi_pch = {
+ .host_mode_only = 1,
+};
+
+static const struct intel_th_drvdata intel_th_acpi_uncore = {
+ .host_mode_only = 1,
+};
+
+static const struct acpi_device_id intel_th_acpi_ids[] = {
+ { "INTC1000", (kernel_ulong_t)&intel_th_acpi_uncore },
+ { "INTC1001", (kernel_ulong_t)&intel_th_acpi_pch },
+ { "", 0 },
+};
+
+MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);
+
+static int intel_th_acpi_probe(struct platform_device *pdev)
+{
+ struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
+ const struct acpi_device_id *id;
+ struct intel_th *th;
+
+ id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);
+ if (!id)
+ return -ENODEV;
+
+ th = intel_th_alloc(&pdev->dev, (void *)id->driver_data,
+ pdev->resource, pdev->num_resources, -1);
+ if (IS_ERR(th))
+ return PTR_ERR(th);
+
+ adev->driver_data = th;
+
+ return 0;
+}
+
+static int intel_th_acpi_remove(struct platform_device *pdev)
+{
+ struct intel_th *th = platform_get_drvdata(pdev);
+
+ intel_th_free(th);
+
+ return 0;
+}
+
+static struct platform_driver intel_th_acpi_driver = {
+ .probe = intel_th_acpi_probe,
+ .remove = intel_th_acpi_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .acpi_match_table = intel_th_acpi_ids,
+ },
+};
+
+module_platform_driver(intel_th_acpi_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");
+MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub driver core
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
thdev->output.port = -1;
thdev->output.scratchpad = subdev->scrpd;
} else if (subdev->type == INTEL_TH_SWITCH) {
- thdev->host_mode = host_mode;
+ thdev->host_mode =
+ INTEL_TH_CAP(th, host_mode_only) ? true : host_mode;
th->hub = thdev;
}
struct intel_th_device *thdev;
/* only allow SOURCE and SWITCH devices in host mode */
- if (host_mode && subdev->type == INTEL_TH_OUTPUT)
+ if ((INTEL_TH_CAP(th, host_mode_only) || host_mode) &&
+ subdev->type == INTEL_TH_OUTPUT)
continue;
/*
struct resource *devres, unsigned int ndevres, int irq)
{
struct intel_th *th;
- int err;
+ int err, r;
+
+ if (irq == -1)
+ for (r = 0; r < ndevres; r++)
+ if (devres[r].flags & IORESOURCE_IRQ) {
+ irq = devres[r].start;
+ break;
+ }
th = kzalloc(sizeof(*th), GFP_KERNEL);
if (!th)
int intel_th_set_output(struct intel_th_device *thdev,
unsigned int master)
{
- struct intel_th_device *hub = to_intel_th_device(thdev->dev.parent);
+ struct intel_th_device *hub = to_intel_th_hub(thdev);
struct intel_th_driver *hubdrv = to_intel_th_driver(hub->dev.driver);
+ /* In host mode, this is up to the external debugger, do nothing. */
+ if (hub->host_mode)
+ return 0;
+
if (!hubdrv->set_output)
return -ENOTSUPP;
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub driver debugging
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#include <linux/types.h>
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub driver debugging
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_DEBUG_H__
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Global Trace Hub
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub Global Trace Hub (GTH) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_GTH_H__
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_H__
/**
* struct intel_th_drvdata - describes hardware capabilities and quirks
* @tscu_enable: device needs SW to enable time stamping unit
+ * @host_mode_only: device can only operate in 'host debugger' mode
*/
struct intel_th_drvdata {
- unsigned int tscu_enable : 1;
+ unsigned int tscu_enable : 1,
+ host_mode_only : 1;
};
#define INTEL_TH_CAP(_th, _cap) ((_th)->drvdata ? (_th)->drvdata->_cap : 0)
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Memory Storage Unit
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Memory Storage Unit (MSU) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_MSU_H__
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub pci driver
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub PTI output driver
*
* Copyright (C) 2014-2016 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub PTI output data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_STH_H__
+// SPDX-License-Identifier: GPL-2.0
/*
* Intel(R) Trace Hub Software Trace Hub support
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel(R) Trace Hub Software Trace Hub (STH) data structures
*
* Copyright (C) 2014-2015 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef __INTEL_TH_STH_H__
+// SPDX-License-Identifier: GPL-2.0
/*
* Simple kernel console driver for STM devices
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* STM console will send kernel messages over STM devices to a trace host.
*/
+// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) infrastructure
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
+// SPDX-License-Identifier: GPL-2.0
/*
* A dummy STM device for stm/stm_source class testing.
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/stm.h>
+#include <uapi/linux/stm.h>
static ssize_t notrace
dummy_stm_packet(struct stm_data *stm_data, unsigned int master,
module_param(fail_mode, int, 0600);
+static unsigned int master_min;
+
+module_param(master_min, int, 0400);
+
+static unsigned int master_max = STP_MASTER_MAX;
+
+module_param(master_max, int, 0400);
+
+static unsigned int nr_channels = STP_CHANNEL_MAX;
+
+module_param(nr_channels, int, 0400);
+
static int dummy_stm_link(struct stm_data *data, unsigned int master,
unsigned int channel)
{
if (nr_dummies < 0 || nr_dummies > DUMMY_STM_MAX)
return -EINVAL;
+ if (master_min > master_max ||
+ master_max > STP_MASTER_MAX ||
+ nr_channels > STP_CHANNEL_MAX)
+ return -EINVAL;
+
for (i = 0; i < nr_dummies; i++) {
dummy_stm[i].name = kasprintf(GFP_KERNEL, "dummy_stm.%d", i);
if (!dummy_stm[i].name)
goto fail_unregister;
- dummy_stm[i].sw_start = 0x0000;
- dummy_stm[i].sw_end = 0xffff;
- dummy_stm[i].sw_nchannels = 0xffff;
+ dummy_stm[i].sw_start = master_min;
+ dummy_stm[i].sw_end = master_max;
+ dummy_stm[i].sw_nchannels = nr_channels;
dummy_stm[i].packet = dummy_stm_packet;
dummy_stm[i].link = dummy_stm_link;
+// SPDX-License-Identifier: GPL-2.0
/*
* Simple heartbeat STM source driver
* Copyright (c) 2016, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* Heartbeat STM source will send repetitive messages over STM devices to a
* trace host.
*/
+// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) master/channel allocation policy management
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* A master/channel allocation policy allows mapping string identifiers to
* master and channel ranges, where allocation can be done.
*/
+/* SPDX-License-Identifier: GPL-2.0 */
/*
* System Trace Module (STM) infrastructure
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
static const struct pci_device_id mcb_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MEN, PCI_DEVICE_ID_MEN_CHAMELEON) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ALTERA, PCI_DEVICE_ID_MEN_CHAMELEON) },
{ 0 },
};
MODULE_DEVICE_TABLE(pci, mcb_pci_tbl);
config ATMEL_TCB_CLKSRC_BLOCK
int
depends on ATMEL_TCB_CLKSRC
- prompt "TC Block" if CPU_AT32AP700X
default 0
range 0 1
help
obj-$(CONFIG_ATMEL_TCLIB) += atmel_tclib.o
obj-$(CONFIG_DUMMY_IRQ) += dummy-irq.o
obj-$(CONFIG_ICS932S401) += ics932s401.o
-obj-$(CONFIG_LKDTM) += lkdtm.o
+obj-$(CONFIG_LKDTM) += lkdtm/
obj-$(CONFIG_TIFM_CORE) += tifm_core.o
obj-$(CONFIG_TIFM_7XX1) += tifm_7xx1.o
obj-$(CONFIG_PHANTOM) += phantom.o
obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o
obj-$(CONFIG_OCXL) += ocxl/
obj-$(CONFIG_MISC_RTSX) += cardreader/
-
-lkdtm-$(CONFIG_LKDTM) += lkdtm_core.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_bugs.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_heap.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_perms.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_refcount.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_rodata_objcopy.o
-lkdtm-$(CONFIG_LKDTM) += lkdtm_usercopy.o
-
-KCOV_INSTRUMENT_lkdtm_rodata.o := n
-
-OBJCOPYFLAGS :=
-OBJCOPYFLAGS_lkdtm_rodata_objcopy.o := \
- --set-section-flags .text=alloc,readonly \
- --rename-section .text=.rodata
-targets += lkdtm_rodata.o lkdtm_rodata_objcopy.o
-$(obj)/lkdtm_rodata_objcopy.o: $(obj)/lkdtm_rodata.o FORCE
- $(call if_changed,objcopy)
* 2 of the License, or (at your option) any later version.
*/
+#include <linux/clk.h>
#include <linux/mfd/syscon.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#define DEVICE_NAME "aspeed-lpc-ctrl"
+#define HICR5 0x0
+#define HICR5_ENL2H BIT(8)
+#define HICR5_ENFWH BIT(10)
+
#define HICR7 0x8
#define HICR8 0xc
struct aspeed_lpc_ctrl {
struct miscdevice miscdev;
struct regmap *regmap;
+ struct clk *clk;
phys_addr_t mem_base;
resource_size_t mem_size;
u32 pnor_size;
if (rc)
return rc;
- return regmap_write(lpc_ctrl->regmap, HICR8,
- (~(map.size - 1)) | ((map.size >> 16) - 1));
+ rc = regmap_write(lpc_ctrl->regmap, HICR8,
+ (~(map.size - 1)) | ((map.size >> 16) - 1));
+ if (rc)
+ return rc;
+
+ /*
+ * Enable LPC FHW cycles. This is required for the host to
+ * access the regions specified.
+ */
+ return regmap_update_bits(lpc_ctrl->regmap, HICR5,
+ HICR5_ENFWH | HICR5_ENL2H,
+ HICR5_ENFWH | HICR5_ENL2H);
}
return -EINVAL;
return -ENODEV;
}
+ lpc_ctrl->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(lpc_ctrl->clk)) {
+ dev_err(dev, "couldn't get clock\n");
+ return PTR_ERR(lpc_ctrl->clk);
+ }
+ rc = clk_prepare_enable(lpc_ctrl->clk);
+ if (rc) {
+ dev_err(dev, "couldn't enable clock\n");
+ return rc;
+ }
+
lpc_ctrl->miscdev.minor = MISC_DYNAMIC_MINOR;
lpc_ctrl->miscdev.name = DEVICE_NAME;
lpc_ctrl->miscdev.fops = &aspeed_lpc_ctrl_fops;
lpc_ctrl->miscdev.parent = dev;
rc = misc_register(&lpc_ctrl->miscdev);
- if (rc)
+ if (rc) {
dev_err(dev, "Unable to register device\n");
- else
- dev_info(dev, "Loaded at %pr\n", &resm);
+ goto err;
+ }
+
+ dev_info(dev, "Loaded at %pr\n", &resm);
+
+ return 0;
+err:
+ clk_disable_unprepare(lpc_ctrl->clk);
return rc;
}
struct aspeed_lpc_ctrl *lpc_ctrl = dev_get_drvdata(&pdev->dev);
misc_deregister(&lpc_ctrl->miscdev);
+ clk_disable_unprepare(lpc_ctrl->clk);
return 0;
}
OC_POWER_DOWN);
}
-int rts5260_get_ocpstat(struct rtsx_pcr *pcr, u8 *val)
+static int rts5260_get_ocpstat(struct rtsx_pcr *pcr, u8 *val)
{
return rtsx_pci_read_register(pcr, REG_OCPSTAT, val);
}
-int rts5260_get_ocpstat2(struct rtsx_pcr *pcr, u8 *val)
+static int rts5260_get_ocpstat2(struct rtsx_pcr *pcr, u8 *val)
{
return rtsx_pci_read_register(pcr, REG_DV3318_OCPSTAT, val);
}
-void rts5260_clear_ocpstat(struct rtsx_pcr *pcr)
+static void rts5260_clear_ocpstat(struct rtsx_pcr *pcr)
{
u8 mask = 0;
u8 val = 0;
DV3318_OCP_INT_CLR | DV3318_OCP_CLR, 0);
}
-void rts5260_process_ocp(struct rtsx_pcr *pcr)
+static void rts5260_process_ocp(struct rtsx_pcr *pcr)
{
if (!pcr->option.ocp_en)
return;
}
}
-int rts5260_init_hw(struct rtsx_pcr *pcr)
+static int rts5260_init_hw(struct rtsx_pcr *pcr)
{
int err;
return 0;
}
-void rts5260_set_aspm(struct rtsx_pcr *pcr, bool enable)
+static void rts5260_set_aspm(struct rtsx_pcr *pcr, bool enable)
{
struct rtsx_cr_option *option = &pcr->option;
u8 val = 0;
+// SPDX-License-Identifier: GPL-2.0+
/*
* at24.c - handle most I2C EEPROMs
*
* Copyright (C) 2005-2007 David Brownell
* Copyright (C) 2008 Wolfram Sang, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
*/
+
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
};
struct at24_data {
- struct at24_platform_data chip;
-
/*
* Lock protects against activities from other Linux tasks,
* but not from changes by other I2C masters.
unsigned int num_addresses;
unsigned int offset_adj;
- struct nvmem_config nvmem_config;
+ u32 byte_len;
+ u16 page_size;
+ u8 flags;
+
struct nvmem_device *nvmem;
struct gpio_desc *wp_gpio;
};
MODULE_DEVICE_TABLE(acpi, at24_acpi_ids);
-/*-------------------------------------------------------------------------*/
-
/*
* This routine supports chips which consume multiple I2C addresses. It
* computes the addressing information to be used for a given r/w request.
{
unsigned int i;
- if (at24->chip.flags & AT24_FLAG_ADDR16) {
+ if (at24->flags & AT24_FLAG_ADDR16) {
i = *offset >> 16;
*offset &= 0xffff;
} else {
return &at24->client[i];
}
+static struct device *at24_base_client_dev(struct at24_data *at24)
+{
+ return &at24->client[0].client->dev;
+}
+
static size_t at24_adjust_read_count(struct at24_data *at24,
unsigned int offset, size_t count)
{
* the next slave address: truncate the count to the slave boundary,
* so that the read never straddles slaves.
*/
- if (at24->chip.flags & AT24_FLAG_NO_RDROL) {
- bits = (at24->chip.flags & AT24_FLAG_ADDR16) ? 16 : 8;
+ if (at24->flags & AT24_FLAG_NO_RDROL) {
+ bits = (at24->flags & AT24_FLAG_ADDR16) ? 16 : 8;
remainder = BIT(bits) - offset;
if (count > remainder)
count = remainder;
count = at24->write_max;
/* Never roll over backwards, to the start of this page */
- next_page = roundup(offset + 1, at24->chip.page_size);
+ next_page = roundup(offset + 1, at24->page_size);
if (offset + count > next_page)
count = next_page - offset;
static int at24_read(void *priv, unsigned int off, void *val, size_t count)
{
- struct at24_data *at24 = priv;
- struct device *dev = &at24->client[0].client->dev;
+ struct at24_data *at24;
+ struct device *dev;
char *buf = val;
int ret;
+ at24 = priv;
+ dev = at24_base_client_dev(at24);
+
if (unlikely(!count))
return count;
- if (off + count > at24->chip.byte_len)
+ if (off + count > at24->byte_len)
return -EINVAL;
ret = pm_runtime_get_sync(dev);
mutex_lock(&at24->lock);
while (count) {
- int status;
-
- status = at24_regmap_read(at24, buf, off, count);
- if (status < 0) {
+ ret = at24_regmap_read(at24, buf, off, count);
+ if (ret < 0) {
mutex_unlock(&at24->lock);
pm_runtime_put(dev);
- return status;
+ return ret;
}
- buf += status;
- off += status;
- count -= status;
+ buf += ret;
+ off += ret;
+ count -= ret;
}
mutex_unlock(&at24->lock);
static int at24_write(void *priv, unsigned int off, void *val, size_t count)
{
- struct at24_data *at24 = priv;
- struct device *dev = &at24->client[0].client->dev;
+ struct at24_data *at24;
+ struct device *dev;
char *buf = val;
int ret;
+ at24 = priv;
+ dev = at24_base_client_dev(at24);
+
if (unlikely(!count))
return -EINVAL;
- if (off + count > at24->chip.byte_len)
+ if (off + count > at24->byte_len)
return -EINVAL;
ret = pm_runtime_get_sync(dev);
gpiod_set_value_cansleep(at24->wp_gpio, 0);
while (count) {
- int status;
-
- status = at24_regmap_write(at24, buf, off, count);
- if (status < 0) {
+ ret = at24_regmap_write(at24, buf, off, count);
+ if (ret < 0) {
gpiod_set_value_cansleep(at24->wp_gpio, 1);
mutex_unlock(&at24->lock);
pm_runtime_put(dev);
- return status;
+ return ret;
}
- buf += status;
- off += status;
- count -= status;
+ buf += ret;
+ off += ret;
+ count -= ret;
}
gpiod_set_value_cansleep(at24->wp_gpio, 1);
return 0;
}
-static void at24_get_pdata(struct device *dev, struct at24_platform_data *chip)
+static void at24_properties_to_pdata(struct device *dev,
+ struct at24_platform_data *chip)
{
int err;
u32 val;
}
}
+static int at24_get_pdata(struct device *dev, struct at24_platform_data *pdata)
+{
+ struct device_node *of_node = dev->of_node;
+ const struct at24_chip_data *cdata;
+ const struct i2c_device_id *id;
+ struct at24_platform_data *pd;
+
+ pd = dev_get_platdata(dev);
+ if (pd) {
+ memcpy(pdata, pd, sizeof(*pdata));
+ return 0;
+ }
+
+ id = i2c_match_id(at24_ids, to_i2c_client(dev));
+
+ /*
+ * The I2C core allows OF nodes compatibles to match against the
+ * I2C device ID table as a fallback, so check not only if an OF
+ * node is present but also if it matches an OF device ID entry.
+ */
+ if (of_node && of_match_device(at24_of_match, dev))
+ cdata = of_device_get_match_data(dev);
+ else if (id)
+ cdata = (void *)&id->driver_data;
+ else
+ cdata = acpi_device_get_match_data(dev);
+
+ if (!cdata)
+ return -ENODEV;
+
+ pdata->byte_len = cdata->byte_len;
+ pdata->flags = cdata->flags;
+ at24_properties_to_pdata(dev, pdata);
+
+ return 0;
+}
+
static unsigned int at24_get_offset_adj(u8 flags, unsigned int byte_len)
{
if (flags & AT24_FLAG_MAC) {
}
}
-static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int at24_probe(struct i2c_client *client)
{
- struct at24_platform_data chip = { 0 };
- const struct at24_chip_data *cd = NULL;
- bool writable;
- struct at24_data *at24;
- int err;
- unsigned int i, num_addresses;
struct regmap_config regmap_config = { };
+ struct nvmem_config nvmem_config = { };
+ struct at24_platform_data pdata = { };
+ struct device *dev = &client->dev;
+ bool i2c_fn_i2c, i2c_fn_block;
+ unsigned int i, num_addresses;
+ struct at24_data *at24;
+ struct regmap *regmap;
+ size_t at24_size;
+ bool writable;
u8 test_byte;
+ int err;
- if (client->dev.platform_data) {
- chip = *(struct at24_platform_data *)client->dev.platform_data;
- } else {
- /*
- * The I2C core allows OF nodes compatibles to match against the
- * I2C device ID table as a fallback, so check not only if an OF
- * node is present but also if it matches an OF device ID entry.
- */
- if (client->dev.of_node &&
- of_match_device(at24_of_match, &client->dev)) {
- cd = of_device_get_match_data(&client->dev);
- } else if (id) {
- cd = (void *)id->driver_data;
- } else {
- const struct acpi_device_id *aid;
-
- aid = acpi_match_device(at24_acpi_ids, &client->dev);
- if (aid)
- cd = (void *)aid->driver_data;
- }
- if (!cd)
- return -ENODEV;
+ i2c_fn_i2c = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
+ i2c_fn_block = i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_WRITE_I2C_BLOCK);
- chip.byte_len = cd->byte_len;
- chip.flags = cd->flags;
- at24_get_pdata(&client->dev, &chip);
- }
+ err = at24_get_pdata(dev, &pdata);
+ if (err)
+ return err;
+
+ if (!i2c_fn_i2c && !i2c_fn_block)
+ pdata.page_size = 1;
- if (!is_power_of_2(chip.byte_len))
- dev_warn(&client->dev,
- "byte_len looks suspicious (no power of 2)!\n");
- if (!chip.page_size) {
- dev_err(&client->dev, "page_size must not be 0!\n");
+ if (!pdata.page_size) {
+ dev_err(dev, "page_size must not be 0!\n");
return -EINVAL;
}
- if (!is_power_of_2(chip.page_size))
- dev_warn(&client->dev,
- "page_size looks suspicious (no power of 2)!\n");
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C) &&
- !i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_WRITE_I2C_BLOCK))
- chip.page_size = 1;
+ if (!is_power_of_2(pdata.page_size))
+ dev_warn(dev, "page_size looks suspicious (no power of 2)!\n");
- if (chip.flags & AT24_FLAG_TAKE8ADDR)
+ if (pdata.flags & AT24_FLAG_TAKE8ADDR)
num_addresses = 8;
else
- num_addresses = DIV_ROUND_UP(chip.byte_len,
- (chip.flags & AT24_FLAG_ADDR16) ? 65536 : 256);
+ num_addresses = DIV_ROUND_UP(pdata.byte_len,
+ (pdata.flags & AT24_FLAG_ADDR16) ? 65536 : 256);
+
+ if ((pdata.flags & AT24_FLAG_SERIAL) && (pdata.flags & AT24_FLAG_MAC)) {
+ dev_err(dev,
+ "invalid device data - cannot have both AT24_FLAG_SERIAL & AT24_FLAG_MAC.");
+ return -EINVAL;
+ }
regmap_config.val_bits = 8;
- regmap_config.reg_bits = (chip.flags & AT24_FLAG_ADDR16) ? 16 : 8;
+ regmap_config.reg_bits = (pdata.flags & AT24_FLAG_ADDR16) ? 16 : 8;
+ regmap_config.disable_locking = true;
- at24 = devm_kzalloc(&client->dev, sizeof(struct at24_data) +
- num_addresses * sizeof(struct at24_client), GFP_KERNEL);
+ regmap = devm_regmap_init_i2c(client, ®map_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ at24_size = sizeof(*at24) + num_addresses * sizeof(struct at24_client);
+ at24 = devm_kzalloc(dev, at24_size, GFP_KERNEL);
if (!at24)
return -ENOMEM;
mutex_init(&at24->lock);
- at24->chip = chip;
+ at24->byte_len = pdata.byte_len;
+ at24->page_size = pdata.page_size;
+ at24->flags = pdata.flags;
at24->num_addresses = num_addresses;
- at24->offset_adj = at24_get_offset_adj(chip.flags, chip.byte_len);
+ at24->offset_adj = at24_get_offset_adj(pdata.flags, pdata.byte_len);
+ at24->client[0].client = client;
+ at24->client[0].regmap = regmap;
- at24->wp_gpio = devm_gpiod_get_optional(&client->dev,
- "wp", GPIOD_OUT_HIGH);
+ at24->wp_gpio = devm_gpiod_get_optional(dev, "wp", GPIOD_OUT_HIGH);
if (IS_ERR(at24->wp_gpio))
return PTR_ERR(at24->wp_gpio);
- at24->client[0].client = client;
- at24->client[0].regmap = devm_regmap_init_i2c(client, ®map_config);
- if (IS_ERR(at24->client[0].regmap))
- return PTR_ERR(at24->client[0].regmap);
-
- if ((chip.flags & AT24_FLAG_SERIAL) && (chip.flags & AT24_FLAG_MAC)) {
- dev_err(&client->dev,
- "invalid device data - cannot have both AT24_FLAG_SERIAL & AT24_FLAG_MAC.");
- return -EINVAL;
- }
-
- writable = !(chip.flags & AT24_FLAG_READONLY);
+ writable = !(pdata.flags & AT24_FLAG_READONLY);
if (writable) {
at24->write_max = min_t(unsigned int,
- chip.page_size, at24_io_limit);
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C) &&
- at24->write_max > I2C_SMBUS_BLOCK_MAX)
+ pdata.page_size, at24_io_limit);
+ if (!i2c_fn_i2c && at24->write_max > I2C_SMBUS_BLOCK_MAX)
at24->write_max = I2C_SMBUS_BLOCK_MAX;
}
at24->client[i].client = i2c_new_dummy(client->adapter,
client->addr + i);
if (!at24->client[i].client) {
- dev_err(&client->dev, "address 0x%02x unavailable\n",
- client->addr + i);
+ dev_err(dev, "address 0x%02x unavailable\n",
+ client->addr + i);
err = -EADDRINUSE;
goto err_clients;
}
i2c_set_clientdata(client, at24);
/* enable runtime pm */
- pm_runtime_set_active(&client->dev);
- pm_runtime_enable(&client->dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
/*
* Perform a one-byte test read to verify that the
* chip is functional.
*/
err = at24_read(at24, 0, &test_byte, 1);
- pm_runtime_idle(&client->dev);
+ pm_runtime_idle(dev);
if (err) {
err = -ENODEV;
goto err_clients;
}
- at24->nvmem_config.name = dev_name(&client->dev);
- at24->nvmem_config.dev = &client->dev;
- at24->nvmem_config.read_only = !writable;
- at24->nvmem_config.root_only = true;
- at24->nvmem_config.owner = THIS_MODULE;
- at24->nvmem_config.compat = true;
- at24->nvmem_config.base_dev = &client->dev;
- at24->nvmem_config.reg_read = at24_read;
- at24->nvmem_config.reg_write = at24_write;
- at24->nvmem_config.priv = at24;
- at24->nvmem_config.stride = 1;
- at24->nvmem_config.word_size = 1;
- at24->nvmem_config.size = chip.byte_len;
-
- at24->nvmem = nvmem_register(&at24->nvmem_config);
-
+ nvmem_config.name = dev_name(dev);
+ nvmem_config.dev = dev;
+ nvmem_config.read_only = !writable;
+ nvmem_config.root_only = true;
+ nvmem_config.owner = THIS_MODULE;
+ nvmem_config.compat = true;
+ nvmem_config.base_dev = dev;
+ nvmem_config.reg_read = at24_read;
+ nvmem_config.reg_write = at24_write;
+ nvmem_config.priv = at24;
+ nvmem_config.stride = 1;
+ nvmem_config.word_size = 1;
+ nvmem_config.size = pdata.byte_len;
+
+ at24->nvmem = nvmem_register(&nvmem_config);
if (IS_ERR(at24->nvmem)) {
err = PTR_ERR(at24->nvmem);
goto err_clients;
}
- dev_info(&client->dev, "%u byte %s EEPROM, %s, %u bytes/write\n",
- chip.byte_len, client->name,
- writable ? "writable" : "read-only", at24->write_max);
+ dev_info(dev, "%u byte %s EEPROM, %s, %u bytes/write\n",
+ pdata.byte_len, client->name,
+ writable ? "writable" : "read-only", at24->write_max);
/* export data to kernel code */
- if (chip.setup)
- chip.setup(at24->nvmem, chip.context);
+ if (pdata.setup)
+ pdata.setup(at24->nvmem, pdata.context);
return 0;
if (at24->client[i].client)
i2c_unregister_device(at24->client[i].client);
- pm_runtime_disable(&client->dev);
+ pm_runtime_disable(dev);
return err;
}
return 0;
}
-/*-------------------------------------------------------------------------*/
-
static struct i2c_driver at24_driver = {
.driver = {
.name = "at24",
.of_match_table = at24_of_match,
.acpi_match_table = ACPI_PTR(at24_acpi_ids),
},
- .probe = at24_probe,
+ .probe_new = at24_probe,
.remove = at24_remove,
.id_table = at24_ids,
};
}
spi_message_init(&m);
- memset(t, 0, sizeof t);
+ memset(t, 0, sizeof(t));
t[0].tx_buf = command;
t[0].len = at25->addrlen + 1;
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_LKDTM) += lkdtm.o
+
+lkdtm-$(CONFIG_LKDTM) += core.o
+lkdtm-$(CONFIG_LKDTM) += bugs.o
+lkdtm-$(CONFIG_LKDTM) += heap.o
+lkdtm-$(CONFIG_LKDTM) += perms.o
+lkdtm-$(CONFIG_LKDTM) += refcount.o
+lkdtm-$(CONFIG_LKDTM) += rodata_objcopy.o
+lkdtm-$(CONFIG_LKDTM) += usercopy.o
+
+KCOV_INSTRUMENT_rodata.o := n
+
+OBJCOPYFLAGS :=
+OBJCOPYFLAGS_rodata_objcopy.o := \
+ --set-section-flags .text=alloc,readonly \
+ --rename-section .text=.rodata
+targets += rodata.o rodata_objcopy.o
+$(obj)/rodata_objcopy.o: $(obj)/rodata.o FORCE
+ $(call if_changed,objcopy)
+// SPDX-License-Identifier: GPL-2.0
/*
* This is for all the tests related to refcount bugs (e.g. overflow,
* underflow, reaching zero untested, etc).
goto out;
}
+ while (cl->tx_cb_queued >= bus->tx_queue_limit) {
+ mutex_unlock(&bus->device_lock);
+ rets = wait_event_interruptible(cl->tx_wait,
+ cl->writing_state == MEI_WRITE_COMPLETE ||
+ (!mei_cl_is_connected(cl)));
+ mutex_lock(&bus->device_lock);
+ if (rets) {
+ if (signal_pending(current))
+ rets = -EINTR;
+ goto out;
+ }
+ if (!mei_cl_is_connected(cl)) {
+ rets = -ENODEV;
+ goto out;
+ }
+ }
+
cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, NULL);
if (!cb) {
rets = -ENOMEM;
}
EXPORT_SYMBOL_GPL(mei_cldev_enabled);
+/**
+ * mei_cl_bus_module_get - acquire module of the underlying
+ * hw driver.
+ *
+ * @cldev: mei client device
+ *
+ * Return: true on success; false if the module was removed.
+ */
+static bool mei_cl_bus_module_get(struct mei_cl_device *cldev)
+{
+ return try_module_get(cldev->bus->dev->driver->owner);
+}
+
+/**
+ * mei_cl_bus_module_put - release the underlying hw module.
+ *
+ * @cldev: mei client device
+ */
+static void mei_cl_bus_module_put(struct mei_cl_device *cldev)
+{
+ module_put(cldev->bus->dev->driver->owner);
+}
+
/**
* mei_cldev_enable - enable me client device
* create connection with me client
goto out;
}
+ if (!mei_cl_bus_module_get(cldev)) {
+ dev_err(&cldev->dev, "get hw module failed");
+ ret = -ENODEV;
+ goto out;
+ }
+
ret = mei_cl_connect(cl, cldev->me_cl, NULL);
- if (ret < 0)
+ if (ret < 0) {
dev_err(&cldev->dev, "cannot connect\n");
+ mei_cl_bus_module_put(cldev);
+ }
out:
mutex_unlock(&bus->device_lock);
dev_err(bus->dev, "Could not disconnect from the ME client\n");
out:
+ mei_cl_bus_module_put(cldev);
+
/* Flush queues and remove any pending read */
mei_cl_flush_queues(cl, NULL);
mei_cl_unlink(cl);
}
EXPORT_SYMBOL_GPL(mei_cldev_disable);
-/**
- * mei_cl_bus_module_get - acquire module of the underlying
- * hw module.
- *
- * @cl: host client
- *
- * Return: true on success; false if the module was removed.
- */
-bool mei_cl_bus_module_get(struct mei_cl *cl)
-{
- struct mei_cl_device *cldev = cl->cldev;
-
- if (!cldev)
- return true;
-
- return try_module_get(cldev->bus->dev->driver->owner);
-}
-
-/**
- * mei_cl_bus_module_put - release the underlying hw module.
- *
- * @cl: host client
- */
-void mei_cl_bus_module_put(struct mei_cl *cl)
-{
- struct mei_cl_device *cldev = cl->cldev;
-
- if (cldev)
- module_put(cldev->bus->dev->driver->owner);
-}
-
/**
* mei_cl_device_find - find matching entry in the driver id table
*
kfree(cb);
}
+/**
+ * mei_tx_cb_queue - queue tx callback
+ *
+ * Locking: called under "dev->device_lock" lock
+ *
+ * @cb: mei callback struct
+ * @head: an instance of list to queue on
+ */
+static inline void mei_tx_cb_enqueue(struct mei_cl_cb *cb,
+ struct list_head *head)
+{
+ list_add_tail(&cb->list, head);
+ cb->cl->tx_cb_queued++;
+}
+
+/**
+ * mei_tx_cb_dequeue - dequeue tx callback
+ *
+ * Locking: called under "dev->device_lock" lock
+ *
+ * @cb: mei callback struct to dequeue and free
+ */
+static inline void mei_tx_cb_dequeue(struct mei_cl_cb *cb)
+{
+ if (!WARN_ON(cb->cl->tx_cb_queued == 0))
+ cb->cl->tx_cb_queued--;
+
+ mei_io_cb_free(cb);
+}
+
/**
* mei_io_cb_init - allocate and initialize io callback
*
}
/**
- * __mei_io_list_flush_cl - removes and frees cbs belonging to cl.
+ * mei_io_list_flush_cl - removes cbs belonging to the cl.
*
* @head: an instance of our list structure
- * @cl: host client, can be NULL for flushing the whole list
- * @free: whether to free the cbs
+ * @cl: host client
*/
-static void __mei_io_list_flush_cl(struct list_head *head,
- const struct mei_cl *cl, bool free)
+static void mei_io_list_flush_cl(struct list_head *head,
+ const struct mei_cl *cl)
{
struct mei_cl_cb *cb, *next;
- /* enable removing everything if no cl is specified */
list_for_each_entry_safe(cb, next, head, list) {
- if (!cl || mei_cl_cmp_id(cl, cb->cl)) {
+ if (mei_cl_cmp_id(cl, cb->cl))
list_del_init(&cb->list);
- if (free)
- mei_io_cb_free(cb);
- }
}
}
/**
- * mei_io_list_flush_cl - removes list entry belonging to cl.
+ * mei_io_tx_list_free_cl - removes cb belonging to the cl and free them
*
* @head: An instance of our list structure
* @cl: host client
*/
-static inline void mei_io_list_flush_cl(struct list_head *head,
- const struct mei_cl *cl)
+static void mei_io_tx_list_free_cl(struct list_head *head,
+ const struct mei_cl *cl)
{
- __mei_io_list_flush_cl(head, cl, false);
-}
+ struct mei_cl_cb *cb, *next;
-/**
- * mei_io_list_free_cl - removes cb belonging to cl and free them
- *
- * @head: An instance of our list structure
- * @cl: host client
- */
-static inline void mei_io_list_free_cl(struct list_head *head,
- const struct mei_cl *cl)
-{
- __mei_io_list_flush_cl(head, cl, true);
+ list_for_each_entry_safe(cb, next, head, list) {
+ if (mei_cl_cmp_id(cl, cb->cl))
+ mei_tx_cb_dequeue(cb);
+ }
}
/**
dev = cl->dev;
cl_dbg(dev, cl, "remove list entry belonging to cl\n");
- mei_io_list_free_cl(&cl->dev->write_list, cl);
- mei_io_list_free_cl(&cl->dev->write_waiting_list, cl);
+ mei_io_tx_list_free_cl(&cl->dev->write_list, cl);
+ mei_io_tx_list_free_cl(&cl->dev->write_waiting_list, cl);
mei_io_list_flush_cl(&cl->dev->ctrl_wr_list, cl);
mei_io_list_flush_cl(&cl->dev->ctrl_rd_list, cl);
mei_io_list_free_fp(&cl->rd_pending, fp);
return;
cl->state = MEI_FILE_DISCONNECTED;
- mei_io_list_free_cl(&dev->write_list, cl);
- mei_io_list_free_cl(&dev->write_waiting_list, cl);
+ mei_io_tx_list_free_cl(&dev->write_list, cl);
+ mei_io_tx_list_free_cl(&dev->write_waiting_list, cl);
mei_io_list_flush_cl(&dev->ctrl_rd_list, cl);
mei_io_list_flush_cl(&dev->ctrl_wr_list, cl);
mei_cl_wake_all(cl);
cl->tx_flow_ctrl_creds = 0;
cl->timer_count = 0;
- mei_cl_bus_module_put(cl);
-
if (!cl->me_cl)
return;
dev = cl->dev;
- if (!mei_cl_bus_module_get(cl))
- return -ENODEV;
-
rets = mei_cl_set_connecting(cl, me_cl);
if (rets)
goto nortpm;
out:
if (mei_hdr.msg_complete)
- list_add_tail(&cb->list, &dev->write_waiting_list);
+ mei_tx_cb_enqueue(cb, &dev->write_waiting_list);
else
- list_add_tail(&cb->list, &dev->write_list);
+ mei_tx_cb_enqueue(cb, &dev->write_list);
cb = NULL;
if (blocking && cl->writing_state != MEI_WRITE_COMPLETE) {
switch (cb->fop_type) {
case MEI_FOP_WRITE:
- mei_io_cb_free(cb);
+ mei_tx_cb_dequeue(cb);
cl->writing_state = MEI_WRITE_COMPLETE;
if (waitqueue_active(&cl->tx_wait)) {
wake_up_interruptible(&cl->tx_wait);
int pos = 0;
int ret;
-#define HDR " |me|host|state|rd|wr|\n"
+#define HDR " |me|host|state|rd|wr|wrq\n"
if (!dev)
return -ENODEV;
list_for_each_entry(cl, &dev->file_list, link) {
pos += scnprintf(buf + pos, bufsz - pos,
- "%3d|%2d|%4d|%5d|%2d|%2d|\n",
+ "%3d|%2d|%4d|%5d|%2d|%2d|%3u\n",
i, mei_cl_me_id(cl), cl->host_client_id, cl->state,
- !list_empty(&cl->rd_completed), cl->writing_state);
+ !list_empty(&cl->rd_completed), cl->writing_state,
+ cl->tx_cb_queued);
i++;
}
out:
INIT_LIST_HEAD(&dev->write_waiting_list);
INIT_LIST_HEAD(&dev->ctrl_wr_list);
INIT_LIST_HEAD(&dev->ctrl_rd_list);
+ dev->tx_queue_limit = MEI_TX_QUEUE_LIMIT_DEFAULT;
INIT_DELAYED_WORK(&dev->timer_work, mei_timer);
INIT_WORK(&dev->reset_work, mei_reset_work);
goto out;
}
+ while (cl->tx_cb_queued >= dev->tx_queue_limit) {
+ if (file->f_flags & O_NONBLOCK) {
+ rets = -EAGAIN;
+ goto out;
+ }
+ mutex_unlock(&dev->device_lock);
+ rets = wait_event_interruptible(cl->tx_wait,
+ cl->writing_state == MEI_WRITE_COMPLETE ||
+ (!mei_cl_is_connected(cl)));
+ mutex_lock(&dev->device_lock);
+ if (rets) {
+ if (signal_pending(current))
+ rets = -EINTR;
+ goto out;
+ }
+ if (!mei_cl_is_connected(cl)) {
+ rets = -ENODEV;
+ goto out;
+ }
+ }
+
*offset = 0;
cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file);
if (!cb) {
break;
default:
- dev_err(dev->dev, ": unsupported ioctl %d.\n", cmd);
rets = -ENOIOCTLCMD;
}
mei_cl_read_start(cl, mei_cl_mtu(cl), file);
}
+ if (req_events & (POLLOUT | POLLWRNORM)) {
+ poll_wait(file, &cl->tx_wait, wait);
+ if (cl->tx_cb_queued < dev->tx_queue_limit)
+ mask |= POLLOUT | POLLWRNORM;
+ }
+
out:
mutex_unlock(&dev->device_lock);
return mask;
}
static DEVICE_ATTR_RO(hbm_ver_drv);
+static ssize_t tx_queue_limit_show(struct device *device,
+ struct device_attribute *attr, char *buf)
+{
+ struct mei_device *dev = dev_get_drvdata(device);
+ u8 size = 0;
+
+ mutex_lock(&dev->device_lock);
+ size = dev->tx_queue_limit;
+ mutex_unlock(&dev->device_lock);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", size);
+}
+
+static ssize_t tx_queue_limit_store(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct mei_device *dev = dev_get_drvdata(device);
+ u8 limit;
+ unsigned int inp;
+ int err;
+
+ err = kstrtouint(buf, 10, &inp);
+ if (err)
+ return err;
+ if (inp > MEI_TX_QUEUE_LIMIT_MAX || inp < MEI_TX_QUEUE_LIMIT_MIN)
+ return -EINVAL;
+ limit = inp;
+
+ mutex_lock(&dev->device_lock);
+ dev->tx_queue_limit = limit;
+ mutex_unlock(&dev->device_lock);
+
+ return count;
+}
+static DEVICE_ATTR_RW(tx_queue_limit);
+
static struct attribute *mei_attrs[] = {
&dev_attr_fw_status.attr,
&dev_attr_hbm_ver.attr,
&dev_attr_hbm_ver_drv.attr,
+ &dev_attr_tx_queue_limit.attr,
NULL
};
ATTRIBUTE_GROUPS(mei);
* @timer_count: watchdog timer for operation completion
* @notify_en: notification - enabled/disabled
* @notify_ev: pending notification event
+ * @tx_cb_queued: number of tx callbacks in queue
* @writing_state: state of the tx
* @rd_pending: pending read credits
* @rd_completed: completed read
u8 timer_count;
u8 notify_en;
u8 notify_ev;
+ u8 tx_cb_queued;
enum mei_file_transaction_states writing_state;
struct list_head rd_pending;
struct list_head rd_completed;
struct mei_cl_device *cldev;
};
+#define MEI_TX_QUEUE_LIMIT_DEFAULT 50
+#define MEI_TX_QUEUE_LIMIT_MAX 255
+#define MEI_TX_QUEUE_LIMIT_MIN 30
+
/**
* struct mei_hw_ops - hw specific ops
*
bool mei_cl_bus_rx_event(struct mei_cl *cl);
bool mei_cl_bus_notify_event(struct mei_cl *cl);
void mei_cl_bus_remove_devices(struct mei_device *bus);
-bool mei_cl_bus_module_get(struct mei_cl *cl);
-void mei_cl_bus_module_put(struct mei_cl *cl);
int mei_cl_bus_init(void);
void mei_cl_bus_exit(void);
* @write_waiting_list : write completion list
* @ctrl_wr_list : pending control write list
* @ctrl_rd_list : pending control read list
+ * @tx_queue_limit: tx queues per client linit
*
* @file_list : list of opened handles
* @open_handle_count: number of opened handles
struct list_head write_waiting_list;
struct list_head ctrl_wr_list;
struct list_head ctrl_rd_list;
+ u8 tx_queue_limit;
struct list_head file_list;
long open_handle_count;
static void vop_release_dev(struct device *d)
{
- put_device(d);
+ struct vop_device *dev = dev_to_vop(d);
+
+ kfree(dev);
}
struct vop_device *
goto free_vdev;
return vdev;
free_vdev:
- kfree(vdev);
+ put_device(&vdev->dev);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(vop_register_device);
rc = device_register(&fn->dev);
if (rc) {
deconfigure_function(fn);
- device_unregister(&fn->dev);
+ put_device(&fn->dev);
return ERR_PTR(rc);
}
return fn;
config NVMEM_SNVS_LPGPR
tristate "Support for Low Power General Purpose Register"
- depends on SOC_IMX6 || COMPILE_TEST
+ depends on SOC_IMX6 || SOC_IMX7D || COMPILE_TEST
help
This is a driver for Low Power General Purpose Register (LPGPR) available on
- i.MX6 SoCs in Secure Non-Volatile Storage (SNVS) of this chip.
+ i.MX6 and i.MX7 SoCs in Secure Non-Volatile Storage (SNVS) of this chip.
This driver can also be built as a module. If so, the module
will be called nvmem-snvs-lpgpr.
else if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2"))
priv->map = &otp_map_v2;
else {
- dev_err(&pdev->dev,
- "%s otpc config map not defined\n", __func__);
+ dev_err(dev, "%s otpc config map not defined\n", __func__);
return -EINVAL;
}
priv->config = &bcm_otpc_nvmem_config;
- nvmem = nvmem_register(&bcm_otpc_nvmem_config);
+ nvmem = devm_nvmem_register(dev, &bcm_otpc_nvmem_config);
if (IS_ERR(nvmem)) {
dev_err(dev, "error registering nvmem config\n");
return PTR_ERR(nvmem);
}
- platform_set_drvdata(pdev, nvmem);
-
return 0;
}
-static int bcm_otpc_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
-}
-
static struct platform_driver bcm_otpc_driver = {
.probe = bcm_otpc_probe,
- .remove = bcm_otpc_remove,
.driver = {
.name = "brcm-otpc",
.of_match_table = bcm_otpc_dt_ids,
nvmem->reg_read = config->reg_read;
nvmem->reg_write = config->reg_write;
nvmem->dev.of_node = config->dev->of_node;
- dev_set_name(&nvmem->dev, "%s%d",
- config->name ? : "nvmem",
- config->name ? config->id : nvmem->id);
+
+ if (config->id == -1 && config->name) {
+ dev_set_name(&nvmem->dev, "%s", config->name);
+ } else {
+ dev_set_name(&nvmem->dev, "%s%d",
+ config->name ? : "nvmem",
+ config->name ? config->id : nvmem->id);
+ }
nvmem->read_only = device_property_present(config->dev, "read-only") |
config->read_only;
}
EXPORT_SYMBOL_GPL(nvmem_unregister);
+static void devm_nvmem_release(struct device *dev, void *res)
+{
+ WARN_ON(nvmem_unregister(*(struct nvmem_device **)res));
+}
+
+/**
+ * devm_nvmem_register() - Register a managed nvmem device for given
+ * nvmem_config.
+ * Also creates an binary entry in /sys/bus/nvmem/devices/dev-name/nvmem
+ *
+ * @config: nvmem device configuration with which nvmem device is created.
+ *
+ * Return: Will be an ERR_PTR() on error or a valid pointer to nvmem_device
+ * on success.
+ */
+struct nvmem_device *devm_nvmem_register(struct device *dev,
+ const struct nvmem_config *config)
+{
+ struct nvmem_device **ptr, *nvmem;
+
+ ptr = devres_alloc(devm_nvmem_release, sizeof(*ptr), GFP_KERNEL);
+ if (!ptr)
+ return ERR_PTR(-ENOMEM);
+
+ nvmem = nvmem_register(config);
+
+ if (!IS_ERR(nvmem)) {
+ *ptr = nvmem;
+ devres_add(dev, ptr);
+ } else {
+ devres_free(ptr);
+ }
+
+ return nvmem;
+}
+EXPORT_SYMBOL_GPL(devm_nvmem_register);
+
+static int devm_nvmem_match(struct device *dev, void *res, void *data)
+{
+ struct nvmem_device **r = res;
+
+ return *r == data;
+}
+
+/**
+ * devm_nvmem_unregister() - Unregister previously registered managed nvmem
+ * device.
+ *
+ * @nvmem: Pointer to previously registered nvmem device.
+ *
+ * Return: Will be an negative on error or a zero on success.
+ */
+int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
+{
+ return devres_release(dev, devm_nvmem_release, devm_nvmem_match, nvmem);
+}
+EXPORT_SYMBOL(devm_nvmem_unregister);
+
+
static struct nvmem_device *__nvmem_device_get(struct device_node *np,
struct nvmem_cell **cellp,
const char *cell_id)
drvdata = of_id->data;
- iim->clk = devm_clk_get(&pdev->dev, NULL);
+ iim->clk = devm_clk_get(dev, NULL);
if (IS_ERR(iim->clk))
return PTR_ERR(iim->clk);
cfg.size = drvdata->nregs;
cfg.priv = iim;
- nvmem = nvmem_register(&cfg);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(dev, &cfg);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int imx_iim_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static struct platform_driver imx_iim_driver = {
.probe = imx_iim_probe,
- .remove = imx_iim_remove,
.driver = {
.name = "imx-iim",
.of_match_table = imx_iim_dt_ids,
static int imx_ocotp_probe(struct platform_device *pdev)
{
- const struct of_device_id *of_id;
struct device *dev = &pdev->dev;
struct resource *res;
struct ocotp_priv *priv;
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);
- of_id = of_match_device(imx_ocotp_dt_ids, dev);
priv->params = of_device_get_match_data(&pdev->dev);
imx_ocotp_nvmem_config.size = 4 * priv->params->nregs;
imx_ocotp_nvmem_config.dev = dev;
imx_ocotp_nvmem_config.priv = priv;
priv->config = &imx_ocotp_nvmem_config;
- nvmem = nvmem_register(&imx_ocotp_nvmem_config);
+ nvmem = devm_nvmem_register(dev, &imx_ocotp_nvmem_config);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int imx_ocotp_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static struct platform_driver imx_ocotp_driver = {
.probe = imx_ocotp_probe,
- .remove = imx_ocotp_remove,
.driver = {
.name = "imx_ocotp",
.of_match_table = imx_ocotp_dt_ids,
lpc18xx_otp_nvmem_config.dev = &pdev->dev;
lpc18xx_otp_nvmem_config.priv = otp;
- nvmem = nvmem_register(&lpc18xx_otp_nvmem_config);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(&pdev->dev, &lpc18xx_otp_nvmem_config);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int lpc18xx_otp_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static const struct of_device_id lpc18xx_otp_dt_ids[] = {
static struct platform_driver lpc18xx_otp_driver = {
.probe = lpc18xx_otp_probe,
- .remove = lpc18xx_otp_remove,
.driver = {
.name = "lpc18xx_otp",
.of_match_table = lpc18xx_otp_dt_ids,
econfig.reg_read = meson_efuse_read;
econfig.size = size;
- nvmem = nvmem_register(&econfig);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(&pdev->dev, &econfig);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int meson_efuse_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static struct platform_driver meson_efuse_driver = {
.probe = meson_efuse_probe,
- .remove = meson_efuse_remove,
.driver = {
.name = "meson-efuse",
.of_match_table = meson_efuse_match,
return PTR_ERR(efuse->core_clk);
}
- efuse->nvmem = nvmem_register(&efuse->config);
- if (IS_ERR(efuse->nvmem))
- return PTR_ERR(efuse->nvmem);
+ efuse->nvmem = devm_nvmem_register(&pdev->dev, &efuse->config);
- platform_set_drvdata(pdev, efuse);
-
- return 0;
-}
-
-static int meson_mx_efuse_remove(struct platform_device *pdev)
-{
- struct meson_mx_efuse *efuse = platform_get_drvdata(pdev);
-
- return nvmem_unregister(efuse->nvmem);
+ return PTR_ERR_OR_ZERO(efuse->nvmem);
}
static struct platform_driver meson_mx_efuse_driver = {
.probe = meson_mx_efuse_probe,
- .remove = meson_mx_efuse_remove,
.driver = {
.name = "meson-mx-efuse",
.of_match_table = meson_mx_efuse_match,
econfig.size = resource_size(res);
econfig.priv = priv;
econfig.dev = dev;
- nvmem = nvmem_register(&econfig);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(dev, &econfig);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int mtk_efuse_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static const struct of_device_id mtk_efuse_of_match[] = {
static struct platform_driver mtk_efuse_driver = {
.probe = mtk_efuse_probe,
- .remove = mtk_efuse_remove,
.driver = {
.name = "mediatek,efuse",
.of_match_table = mtk_efuse_of_match,
return 0;
}
-static int qfprom_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
-}
-
static struct nvmem_config econfig = {
.name = "qfprom",
.stride = 1,
econfig.dev = dev;
econfig.priv = priv;
- nvmem = nvmem_register(&econfig);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
-
- platform_set_drvdata(pdev, nvmem);
+ nvmem = devm_nvmem_register(dev, &econfig);
- return 0;
+ return PTR_ERR_OR_ZERO(nvmem);
}
static const struct of_device_id qfprom_of_match[] = {
static struct platform_driver qfprom_driver = {
.probe = qfprom_probe,
- .remove = qfprom_remove,
.driver = {
.name = "qcom,qfprom",
.of_match_table = qfprom_of_match,
struct resource *res;
struct nvmem_device *nvmem;
struct rockchip_efuse_chip *efuse;
- const struct of_device_id *match;
+ const void *data;
struct device *dev = &pdev->dev;
- match = of_match_device(dev->driver->of_match_table, dev);
- if (!match || !match->data) {
+ data = of_device_get_match_data(dev);
+ if (!data) {
dev_err(dev, "failed to get match data\n");
return -EINVAL;
}
- efuse = devm_kzalloc(&pdev->dev, sizeof(struct rockchip_efuse_chip),
+ efuse = devm_kzalloc(dev, sizeof(struct rockchip_efuse_chip),
GFP_KERNEL);
if (!efuse)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- efuse->base = devm_ioremap_resource(&pdev->dev, res);
+ efuse->base = devm_ioremap_resource(dev, res);
if (IS_ERR(efuse->base))
return PTR_ERR(efuse->base);
- efuse->clk = devm_clk_get(&pdev->dev, "pclk_efuse");
+ efuse->clk = devm_clk_get(dev, "pclk_efuse");
if (IS_ERR(efuse->clk))
return PTR_ERR(efuse->clk);
- efuse->dev = &pdev->dev;
+ efuse->dev = dev;
if (of_property_read_u32(dev->of_node, "rockchip,efuse-size",
&econfig.size))
econfig.size = resource_size(res);
- econfig.reg_read = match->data;
+ econfig.reg_read = data;
econfig.priv = efuse;
econfig.dev = efuse->dev;
- nvmem = nvmem_register(&econfig);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(dev, &econfig);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int rockchip_efuse_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static struct platform_driver rockchip_efuse_driver = {
.probe = rockchip_efuse_probe,
- .remove = rockchip_efuse_remove,
.driver = {
.name = "rockchip-efuse",
.of_match_table = rockchip_efuse_match,
#include <linux/regmap.h>
#define IMX6Q_SNVS_HPLR 0x00
-#define IMX6Q_GPR_SL BIT(5)
#define IMX6Q_SNVS_LPLR 0x34
-#define IMX6Q_GPR_HL BIT(5)
#define IMX6Q_SNVS_LPGPR 0x68
+#define IMX7D_SNVS_HPLR 0x00
+#define IMX7D_SNVS_LPLR 0x34
+#define IMX7D_SNVS_LPGPR 0x90
+
+#define IMX_GPR_SL BIT(5)
+#define IMX_GPR_HL BIT(5)
+
struct snvs_lpgpr_cfg {
int offset;
int offset_hplr;
int offset_lplr;
+ int size;
};
struct snvs_lpgpr_priv {
.offset = IMX6Q_SNVS_LPGPR,
.offset_hplr = IMX6Q_SNVS_HPLR,
.offset_lplr = IMX6Q_SNVS_LPLR,
+ .size = 4,
+};
+
+static const struct snvs_lpgpr_cfg snvs_lpgpr_cfg_imx7d = {
+ .offset = IMX7D_SNVS_LPGPR,
+ .offset_hplr = IMX7D_SNVS_HPLR,
+ .offset_lplr = IMX7D_SNVS_LPLR,
+ .size = 16,
};
static int snvs_lpgpr_write(void *context, unsigned int offset, void *val,
if (ret < 0)
return ret;
- if (lock_reg & IMX6Q_GPR_SL)
+ if (lock_reg & IMX_GPR_SL)
return -EPERM;
ret = regmap_read(priv->regmap, dcfg->offset_lplr, &lock_reg);
if (ret < 0)
return ret;
- if (lock_reg & IMX6Q_GPR_HL)
+ if (lock_reg & IMX_GPR_HL)
return -EPERM;
return regmap_bulk_write(priv->regmap, dcfg->offset + offset, val,
cfg->priv = priv;
cfg->name = dev_name(dev);
cfg->dev = dev;
- cfg->stride = 4,
- cfg->word_size = 4,
- cfg->size = 4,
- cfg->owner = THIS_MODULE,
- cfg->reg_read = snvs_lpgpr_read,
- cfg->reg_write = snvs_lpgpr_write,
-
- nvmem = nvmem_register(cfg);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ cfg->stride = 4;
+ cfg->word_size = 4;
+ cfg->size = dcfg->size,
+ cfg->owner = THIS_MODULE;
+ cfg->reg_read = snvs_lpgpr_read;
+ cfg->reg_write = snvs_lpgpr_write;
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int snvs_lpgpr_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
+ nvmem = devm_nvmem_register(dev, cfg);
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static const struct of_device_id snvs_lpgpr_dt_ids[] = {
{ .compatible = "fsl,imx6q-snvs-lpgpr", .data = &snvs_lpgpr_cfg_imx6q },
{ .compatible = "fsl,imx6ul-snvs-lpgpr",
.data = &snvs_lpgpr_cfg_imx6q },
+ { .compatible = "fsl,imx7d-snvs-lpgpr", .data = &snvs_lpgpr_cfg_imx7d },
{ },
};
MODULE_DEVICE_TABLE(of, snvs_lpgpr_dt_ids);
static struct platform_driver snvs_lpgpr_driver = {
.probe = snvs_lpgpr_probe,
- .remove = snvs_lpgpr_remove,
.driver = {
.name = "snvs_lpgpr",
.of_match_table = snvs_lpgpr_dt_ids,
module_platform_driver(snvs_lpgpr_driver);
MODULE_AUTHOR("Oleksij Rempel <o.rempel@pengutronix.de>");
-MODULE_DESCRIPTION("Low Power General Purpose Register in i.MX6 Secure Non-Volatile Storage");
+MODULE_DESCRIPTION("Low Power General Purpose Register in i.MX6 and i.MX7 Secure Non-Volatile Storage");
MODULE_LICENSE("GPL v2");
}
static int sun8i_sid_register_readout(const struct sunxi_sid *sid,
- const unsigned int word)
+ const unsigned int offset,
+ u32 *out)
{
u32 reg_val;
int ret;
/* Set word, lock access, and set read command */
- reg_val = (word & SUN8I_SID_OFFSET_MASK)
+ reg_val = (offset & SUN8I_SID_OFFSET_MASK)
<< SUN8I_SID_OFFSET_SHIFT;
reg_val |= SUN8I_SID_OP_LOCK | SUN8I_SID_READ;
writel(reg_val, sid->base + SUN8I_SID_PRCTL);
if (ret)
return ret;
+ if (out)
+ *out = readl(sid->base + SUN8I_SID_RDKEY);
+
writel(0, sid->base + SUN8I_SID_PRCTL);
+
+ return 0;
+}
+
+/*
+ * On Allwinner H3, the value on the 0x200 offset of the SID controller seems
+ * to be not reliable at all.
+ * Read by the registers instead.
+ */
+static int sun8i_sid_read_byte_by_reg(const struct sunxi_sid *sid,
+ const unsigned int offset,
+ u8 *out)
+{
+ u32 word;
+ int ret;
+
+ ret = sun8i_sid_register_readout(sid, offset & ~0x03, &word);
+
+ if (ret)
+ return ret;
+
+ *out = (word >> ((offset & 0x3) * 8)) & 0xff;
+
+ return 0;
+}
+
+static int sun8i_sid_read_by_reg(void *context, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct sunxi_sid *sid = context;
+ u8 *buf = val;
+ int ret;
+
+ while (bytes--) {
+ ret = sun8i_sid_read_byte_by_reg(sid, offset++, buf++);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
size = cfg->size;
- if (cfg->need_register_readout) {
- /*
- * H3's SID controller have a bug that the value at 0x200
- * offset is not the correct value when the hardware is reseted.
- * However, after doing a register-based read operation, the
- * value become right.
- * Do a full read operation here, but ignore its value
- * (as it's more fast to read by direct MMIO value than
- * with registers)
- */
- for (i = 0; i < (size >> 2); i++) {
- ret = sun8i_sid_register_readout(sid, i);
- if (ret)
- return ret;
- }
- }
-
econfig.size = size;
econfig.dev = dev;
- econfig.reg_read = sunxi_sid_read;
+ if (cfg->need_register_readout)
+ econfig.reg_read = sun8i_sid_read_by_reg;
+ else
+ econfig.reg_read = sunxi_sid_read;
econfig.priv = sid;
nvmem = nvmem_register(&econfig);
if (IS_ERR(nvmem))
}
for (i = 0; i < size; i++)
- randomness[i] = sunxi_sid_read_byte(sid, i);
+ econfig.reg_read(sid, i, &randomness[i], 1);
add_device_randomness(randomness, size);
kfree(randomness);
econfig.size = resource_size(res);
econfig.priv = priv;
econfig.dev = dev;
- nvmem = nvmem_register(&econfig);
- if (IS_ERR(nvmem))
- return PTR_ERR(nvmem);
+ nvmem = devm_nvmem_register(dev, &econfig);
- platform_set_drvdata(pdev, nvmem);
-
- return 0;
-}
-
-static int uniphier_efuse_remove(struct platform_device *pdev)
-{
- struct nvmem_device *nvmem = platform_get_drvdata(pdev);
-
- return nvmem_unregister(nvmem);
+ return PTR_ERR_OR_ZERO(nvmem);
}
static const struct of_device_id uniphier_efuse_of_match[] = {
static struct platform_driver uniphier_efuse_driver = {
.probe = uniphier_efuse_probe,
- .remove = uniphier_efuse_remove,
.driver = {
.name = "uniphier-efuse",
.of_match_table = uniphier_efuse_of_match,
};
MODULE_DEVICE_TABLE(of, ocotp_of_match);
-static int vf610_ocotp_remove(struct platform_device *pdev)
-{
- struct vf610_ocotp *ocotp_dev = platform_get_drvdata(pdev);
-
- return nvmem_unregister(ocotp_dev->nvmem);
-}
-
static int vf610_ocotp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct resource *res;
struct vf610_ocotp *ocotp_dev;
- ocotp_dev = devm_kzalloc(&pdev->dev,
- sizeof(struct vf610_ocotp), GFP_KERNEL);
+ ocotp_dev = devm_kzalloc(dev, sizeof(struct vf610_ocotp), GFP_KERNEL);
if (!ocotp_dev)
return -ENOMEM;
PTR_ERR(ocotp_dev->clk));
return PTR_ERR(ocotp_dev->clk);
}
+ ocotp_dev->dev = dev;
+ ocotp_dev->timing = vf610_ocotp_calculate_timing(ocotp_dev);
ocotp_config.size = resource_size(res);
ocotp_config.priv = ocotp_dev;
ocotp_config.dev = dev;
- ocotp_dev->nvmem = nvmem_register(&ocotp_config);
- if (IS_ERR(ocotp_dev->nvmem))
- return PTR_ERR(ocotp_dev->nvmem);
+ ocotp_dev->nvmem = devm_nvmem_register(dev, &ocotp_config);
- ocotp_dev->dev = dev;
- platform_set_drvdata(pdev, ocotp_dev);
-
- ocotp_dev->timing = vf610_ocotp_calculate_timing(ocotp_dev);
-
- return 0;
+ return PTR_ERR_OR_ZERO(ocotp_dev->nvmem);
}
static struct platform_driver vf610_ocotp_driver = {
.probe = vf610_ocotp_probe,
- .remove = vf610_ocotp_remove,
.driver = {
.name = "vf610-ocotp",
.of_match_table = ocotp_of_match,
{
struct device *_dev = &pdev->dev;
struct ax_drvdata *dd;
- struct parport *pp = NULL;
+ struct parport *pp;
struct resource *res;
unsigned long size;
int spacing;
int irq;
int ret;
- dd = kzalloc(sizeof(struct ax_drvdata), GFP_KERNEL);
- if (dd == NULL) {
- dev_err(_dev, "no memory for private data\n");
+ dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+ if (!dd)
return -ENOMEM;
- }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
netmos_9901,
netmos_9865,
quatech_sppxp100,
+ wch_ch382l,
};
/* netmos_9901 */ { 1, { { 0, -1 }, } },
/* netmos_9865 */ { 1, { { 0, -1 }, } },
/* quatech_sppxp100 */ { 1, { { 0, 1 }, } },
+ /* wch_ch382l */ { 1, { { 2, -1 }, } },
};
static const struct pci_device_id parport_pc_pci_tbl[] = {
/* Quatech SPPXP-100 Parallel port PCI ExpressCard */
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 },
+ /* WCH CH382L PCI-E single parallel port card */
+ { 0x1c00, 0x3050, 0x1c00, 0x3050, 0, 0, wch_ch382l },
{ 0, } /* terminate list */
};
MODULE_DEVICE_TABLE(pci, parport_pc_pci_tbl);
+// SPDX-License-Identifier: GPL-2.0+
/*
* Support for common PCI multi-I/O cards (which is most of them)
*
* Copyright (C) 2001 Tim Waugh <twaugh@redhat.com>
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- *
* Multi-function PCI cards are supposed to present separate logical
* devices on the bus. A common thing to do seems to be to just use
* one logical device with lots of base address registers for both
* parallel ports and serial ports. This driver is for dealing with
* that.
- *
*/
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
#include <linux/interrupt.h>
+#include <linux/module.h>
#include <linux/parport.h>
#include <linux/parport_pc.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
#include <linux/8250_pci.h>
enum parport_pc_pci_cards {
wch_ch353_1s1p,
wch_ch353_2s1p,
wch_ch382_2s1p,
+ brainboxes_5s1p,
sunix_2s1p,
};
/* wch_ch353_1s1p*/ { 1, { { 1, -1}, } },
/* wch_ch353_2s1p*/ { 1, { { 2, -1}, } },
/* wch_ch382_2s1p*/ { 1, { { 2, -1}, } },
+ /* brainboxes_5s1p */ { 1, { { 3, -1 }, } },
/* sunix_2s1p */ { 1, { { 3, -1 }, } },
};
{ 0x4348, 0x7053, 0x4348, 0x3253, 0, 0, wch_ch353_2s1p},
{ 0x1c00, 0x3250, 0x1c00, 0x3250, 0, 0, wch_ch382_2s1p},
+ /* BrainBoxes PX272/PX306 MIO card */
+ { PCI_VENDOR_ID_INTASHIELD, 0x4100,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, brainboxes_5s1p },
+
/*
* More SUNIX variations. At least one of these has part number
* '5079A but subdevice 0x102. That board reports 0x0708 as
.uart_offset = 8,
.first_offset = 0xC0,
},
+ [brainboxes_5s1p] = {
+ .flags = FL_BASE2,
+ .num_ports = 5,
+ .base_baud = 921600,
+ .uart_offset = 8,
+ },
[sunix_2s1p] = {
.flags = FL_BASE0|FL_BASE_BARS,
.num_ports = 2,
struct serial_private *serial;
board = &pci_parport_serial_boards[id->driver_data];
-
if (board->num_ports == 0)
return 0;
serial = pciserial_init_ports(dev, board);
-
if (IS_ERR(serial))
return PTR_ERR(serial);
int irq;
if (priv->num_par == ARRAY_SIZE (priv->port)) {
- printk (KERN_WARNING
- "parport_serial: %s: only %zu parallel ports "
- "supported (%d reported)\n", pci_name (dev),
- ARRAY_SIZE(priv->port), card->numports);
+ dev_warn(&dev->dev,
+ "only %zu parallel ports supported (%d reported)\n",
+ ARRAY_SIZE(priv->port), card->numports);
break;
}
irq = dev->irq;
if (irq == IRQ_NONE) {
dev_dbg(&dev->dev,
- "PCI parallel port detected: I/O at %#lx(%#lx)\n",
+ "PCI parallel port detected: I/O at %#lx(%#lx)\n",
io_lo, io_hi);
irq = PARPORT_IRQ_NONE;
} else {
dev_dbg(&dev->dev,
- "PCI parallel port detected: I/O at %#lx(%#lx), IRQ %d\n",
+ "PCI parallel port detected: I/O at %#lx(%#lx), IRQ %d\n",
io_lo, io_hi, irq);
}
port = parport_pc_probe_port (io_lo, io_hi, irq,
struct parport_serial_private *priv;
int err;
- priv = kzalloc (sizeof *priv, GFP_KERNEL);
+ priv = devm_kzalloc(&dev->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
+
pci_set_drvdata (dev, priv);
- err = pci_enable_device (dev);
- if (err) {
- kfree (priv);
+ err = pcim_enable_device(dev);
+ if (err)
return err;
- }
- if (parport_register (dev, id)) {
- kfree (priv);
- return -ENODEV;
- }
+ err = parport_register(dev, id);
+ if (err)
+ return err;
- if (serial_register (dev, id)) {
+ err = serial_register(dev, id);
+ if (err) {
int i;
for (i = 0; i < priv->num_par; i++)
parport_pc_unregister_port (priv->port[i]);
- kfree (priv);
- return -ENODEV;
+ return err;
}
return 0;
for (i = 0; i < priv->num_par; i++)
parport_pc_unregister_port (priv->port[i]);
- kfree (priv);
return;
}
-#ifdef CONFIG_PM
-static int parport_serial_pci_suspend(struct pci_dev *dev, pm_message_t state)
+static int __maybe_unused parport_serial_pci_suspend(struct device *dev)
{
- struct parport_serial_private *priv = pci_get_drvdata(dev);
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct parport_serial_private *priv = pci_get_drvdata(pdev);
if (priv->serial)
pciserial_suspend_ports(priv->serial);
/* FIXME: What about parport? */
-
- pci_save_state(dev);
- pci_set_power_state(dev, pci_choose_state(dev, state));
return 0;
}
-static int parport_serial_pci_resume(struct pci_dev *dev)
+static int __maybe_unused parport_serial_pci_resume(struct device *dev)
{
- struct parport_serial_private *priv = pci_get_drvdata(dev);
- int err;
-
- pci_set_power_state(dev, PCI_D0);
- pci_restore_state(dev);
-
- /*
- * The device may have been disabled. Re-enable it.
- */
- err = pci_enable_device(dev);
- if (err) {
- printk(KERN_ERR "parport_serial: %s: error enabling "
- "device for resume (%d)\n", pci_name(dev), err);
- return err;
- }
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct parport_serial_private *priv = pci_get_drvdata(pdev);
if (priv->serial)
pciserial_resume_ports(priv->serial);
/* FIXME: What about parport? */
-
return 0;
}
-#endif
+
+static SIMPLE_DEV_PM_OPS(parport_serial_pm_ops,
+ parport_serial_pci_suspend, parport_serial_pci_resume);
static struct pci_driver parport_serial_pci_driver = {
.name = "parport_serial",
.id_table = parport_serial_pci_tbl,
.probe = parport_serial_pci_probe,
.remove = parport_serial_pci_remove,
-#ifdef CONFIG_PM
- .suspend = parport_serial_pci_suspend,
- .resume = parport_serial_pci_resume,
-#endif
+ .driver = {
+ .pm = &parport_serial_pm_ops,
+ },
};
-
-
-static int __init parport_serial_init (void)
-{
- return pci_register_driver (&parport_serial_pci_driver);
-}
-
-static void __exit parport_serial_exit (void)
-{
- pci_unregister_driver (&parport_serial_pci_driver);
- return;
-}
+module_pci_driver(parport_serial_pci_driver);
MODULE_AUTHOR("Tim Waugh <twaugh@redhat.com>");
MODULE_DESCRIPTION("Driver for common parallel+serial multi-I/O PCI cards");
MODULE_LICENSE("GPL");
-
-module_init(parport_serial_init);
-module_exit(parport_serial_exit);
" zero turns clear edge capture off entirely");
module_param(clear_wait, uint, 0);
+static DEFINE_IDA(pps_client_index);
/* internal per port structure */
struct pps_client_pp {
struct pps_device *pps; /* PPS device */
unsigned int cw; /* port clear timeout */
unsigned int cw_err; /* number of timeouts */
+ int index; /* device number */
};
static inline int signal_is_set(struct parport *port)
static void parport_attach(struct parport *port)
{
+ struct pardev_cb pps_client_cb;
+ int index;
struct pps_client_pp *device;
struct pps_source_info info = {
.name = KBUILD_MODNAME,
return;
}
- device->pardev = parport_register_device(port, KBUILD_MODNAME,
- NULL, NULL, parport_irq, PARPORT_FLAG_EXCL, device);
+ index = ida_simple_get(&pps_client_index, 0, 0, GFP_KERNEL);
+ memset(&pps_client_cb, 0, sizeof(pps_client_cb));
+ pps_client_cb.private = device;
+ pps_client_cb.irq_func = parport_irq;
+ pps_client_cb.flags = PARPORT_FLAG_EXCL;
+ device->pardev = parport_register_dev_model(port,
+ KBUILD_MODNAME,
+ &pps_client_cb,
+ index);
if (!device->pardev) {
pr_err("couldn't register with %s\n", port->name);
goto err_free;
device->cw = clear_wait;
port->ops->enable_irq(port);
+ device->index = index;
pr_info("attached to %s\n", port->name);
err_unregister_dev:
parport_unregister_device(device->pardev);
err_free:
+ ida_simple_remove(&pps_client_index, index);
kfree(device);
}
pps_unregister_source(device->pps);
parport_release(pardev);
parport_unregister_device(pardev);
+ ida_simple_remove(&pps_client_index, device->index);
kfree(device);
}
static struct parport_driver pps_parport_driver = {
.name = KBUILD_MODNAME,
- .attach = parport_attach,
+ .match_port = parport_attach,
.detach = parport_detach,
+ .devmodel = true,
};
/* module staff */
static void parport_attach(struct parport *port)
{
+ struct pardev_cb pps_cb;
+
if (attached) {
/* we already have a port */
return;
}
- device.pardev = parport_register_device(port, KBUILD_MODNAME,
- NULL, NULL, NULL, PARPORT_FLAG_EXCL, &device);
+ memset(&pps_cb, 0, sizeof(pps_cb));
+ pps_cb.private = &device;
+ pps_cb.flags = PARPORT_FLAG_EXCL;
+ device.pardev = parport_register_dev_model(port, KBUILD_MODNAME,
+ &pps_cb, 0);
if (!device.pardev) {
pr_err("couldn't register with %s\n", port->name);
return;
static struct parport_driver pps_gen_parport_driver = {
.name = KBUILD_MODNAME,
- .attach = parport_attach,
+ .match_port = parport_attach,
.detach = parport_detach,
+ .devmodel = true,
};
/* module staff */
size_t inbytes = 0, outbytes = 0;
u8 statustype = 0;
- ret = sscanf(buf, "%20s %zu %zu %hhu", type, &inbytes,
+ ret = sscanf(buf, "%19s %zu %zu %hhu", type, &inbytes,
&outbytes, &statustype);
if (ret != 3 && ret != 4)
return -EINVAL;
sbdev->e_addr = *eaddr;
ret = slim_add_device(ctrl, sbdev, node);
if (ret) {
- kfree(sbdev);
+ put_device(&sbdev->dev);
return NULL;
}
static int dma_find_port(struct tb_switch *sw)
{
- int port, ret;
- u32 type;
+ static const int ports[] = { 3, 5, 7 };
+ int i;
/*
- * The DMA (NHI) port is either 3 or 5 depending on the
- * controller. Try both starting from 5 which is more common.
+ * The DMA (NHI) port is either 3, 5 or 7 depending on the
+ * controller. Try all of them.
*/
- port = 5;
- ret = dma_port_read(sw->tb->ctl, &type, tb_route(sw), port, 2, 1,
- DMA_PORT_TIMEOUT);
- if (!ret && (type & 0xffffff) == TB_TYPE_NHI)
- return port;
-
- port = 3;
- ret = dma_port_read(sw->tb->ctl, &type, tb_route(sw), port, 2, 1,
- DMA_PORT_TIMEOUT);
- if (!ret && (type & 0xffffff) == TB_TYPE_NHI)
- return port;
+ for (i = 0; i < ARRAY_SIZE(ports); i++) {
+ u32 type;
+ int ret;
+
+ ret = dma_port_read(sw->tb->ctl, &type, tb_route(sw), ports[i],
+ 2, 1, DMA_PORT_TIMEOUT);
+ if (!ret && (type & 0xffffff) == TB_TYPE_NHI)
+ return ports[i];
+ }
return -ENODEV;
}
[TB_SECURITY_USER] = "user",
[TB_SECURITY_SECURE] = "secure",
[TB_SECURITY_DPONLY] = "dponly",
+ [TB_SECURITY_USBONLY] = "usbonly",
};
+static ssize_t boot_acl_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct tb *tb = container_of(dev, struct tb, dev);
+ uuid_t *uuids;
+ ssize_t ret;
+ int i;
+
+ uuids = kcalloc(tb->nboot_acl, sizeof(uuid_t), GFP_KERNEL);
+ if (!uuids)
+ return -ENOMEM;
+
+ if (mutex_lock_interruptible(&tb->lock)) {
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+ ret = tb->cm_ops->get_boot_acl(tb, uuids, tb->nboot_acl);
+ if (ret) {
+ mutex_unlock(&tb->lock);
+ goto out;
+ }
+ mutex_unlock(&tb->lock);
+
+ for (ret = 0, i = 0; i < tb->nboot_acl; i++) {
+ if (!uuid_is_null(&uuids[i]))
+ ret += snprintf(buf + ret, PAGE_SIZE - ret, "%pUb",
+ &uuids[i]);
+
+ ret += snprintf(buf + ret, PAGE_SIZE - ret, "%s",
+ i < tb->nboot_acl - 1 ? "," : "\n");
+ }
+
+out:
+ kfree(uuids);
+ return ret;
+}
+
+static ssize_t boot_acl_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct tb *tb = container_of(dev, struct tb, dev);
+ char *str, *s, *uuid_str;
+ ssize_t ret = 0;
+ uuid_t *acl;
+ int i = 0;
+
+ /*
+ * Make sure the value is not bigger than tb->nboot_acl * UUID
+ * length + commas and optional "\n". Also the smallest allowable
+ * string is tb->nboot_acl * ",".
+ */
+ if (count > (UUID_STRING_LEN + 1) * tb->nboot_acl + 1)
+ return -EINVAL;
+ if (count < tb->nboot_acl - 1)
+ return -EINVAL;
+
+ str = kstrdup(buf, GFP_KERNEL);
+ if (!str)
+ return -ENOMEM;
+
+ acl = kcalloc(tb->nboot_acl, sizeof(uuid_t), GFP_KERNEL);
+ if (!acl) {
+ ret = -ENOMEM;
+ goto err_free_str;
+ }
+
+ uuid_str = strim(str);
+ while ((s = strsep(&uuid_str, ",")) != NULL && i < tb->nboot_acl) {
+ size_t len = strlen(s);
+
+ if (len) {
+ if (len != UUID_STRING_LEN) {
+ ret = -EINVAL;
+ goto err_free_acl;
+ }
+ ret = uuid_parse(s, &acl[i]);
+ if (ret)
+ goto err_free_acl;
+ }
+
+ i++;
+ }
+
+ if (s || i < tb->nboot_acl) {
+ ret = -EINVAL;
+ goto err_free_acl;
+ }
+
+ if (mutex_lock_interruptible(&tb->lock)) {
+ ret = -ERESTARTSYS;
+ goto err_free_acl;
+ }
+ ret = tb->cm_ops->set_boot_acl(tb, acl, tb->nboot_acl);
+ mutex_unlock(&tb->lock);
+
+err_free_acl:
+ kfree(acl);
+err_free_str:
+ kfree(str);
+
+ return ret ?: count;
+}
+static DEVICE_ATTR_RW(boot_acl);
+
static ssize_t security_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct tb *tb = container_of(dev, struct tb, dev);
+ const char *name = "unknown";
- return sprintf(buf, "%s\n", tb_security_names[tb->security_level]);
+ if (tb->security_level < ARRAY_SIZE(tb_security_names))
+ name = tb_security_names[tb->security_level];
+
+ return sprintf(buf, "%s\n", name);
}
static DEVICE_ATTR_RO(security);
static struct attribute *domain_attrs[] = {
+ &dev_attr_boot_acl.attr,
&dev_attr_security.attr,
NULL,
};
+static umode_t domain_attr_is_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct tb *tb = container_of(dev, struct tb, dev);
+
+ if (attr == &dev_attr_boot_acl.attr) {
+ if (tb->nboot_acl &&
+ tb->cm_ops->get_boot_acl &&
+ tb->cm_ops->set_boot_acl)
+ return attr->mode;
+ return 0;
+ }
+
+ return attr->mode;
+}
+
static struct attribute_group domain_attr_group = {
+ .is_visible = domain_attr_is_visible,
.attrs = domain_attrs,
};
#define PHY_PORT_CS1_LINK_STATE_MASK GENMASK(29, 26)
#define PHY_PORT_CS1_LINK_STATE_SHIFT 26
-#define ICM_TIMEOUT 5000 /* ms */
+#define ICM_TIMEOUT 5000 /* ms */
+#define ICM_APPROVE_TIMEOUT 10000 /* ms */
#define ICM_MAX_LINK 4
#define ICM_MAX_DEPTH 6
* @vnd_cap: Vendor defined capability where PCIe2CIO mailbox resides
* (only set when @upstream_port is not %NULL)
* @safe_mode: ICM is in safe mode
+ * @max_boot_acl: Maximum number of preboot ACL entries (%0 if not supported)
* @is_supported: Checks if we can support ICM on this controller
* @get_mode: Read and return the ICM firmware mode (optional)
* @get_route: Find a route string for given switch
+ * @driver_ready: Send driver ready message to ICM
* @device_connected: Handle device connected ICM message
* @device_disconnected: Handle device disconnected ICM message
* @xdomain_connected - Handle XDomain connected ICM message
struct mutex request_lock;
struct delayed_work rescan_work;
struct pci_dev *upstream_port;
+ size_t max_boot_acl;
int vnd_cap;
bool safe_mode;
bool (*is_supported)(struct tb *tb);
int (*get_mode)(struct tb *tb);
int (*get_route)(struct tb *tb, u8 link, u8 depth, u64 *route);
+ int (*driver_ready)(struct tb *tb,
+ enum tb_security_level *security_level,
+ size_t *nboot_acl);
void (*device_connected)(struct tb *tb,
const struct icm_pkg_header *hdr);
void (*device_disconnected)(struct tb *tb,
return (u64)route_hi << 32 | route_lo;
}
+static inline u64 get_parent_route(u64 route)
+{
+ int depth = tb_route_length(route);
+ return depth ? route & ~(0xffULL << (depth - 1) * TB_ROUTE_SHIFT) : 0;
+}
+
static bool icm_match(const struct tb_cfg_request *req,
const struct ctl_pkg *pkg)
{
return ret;
}
+static int
+icm_fr_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl)
+{
+ struct icm_fr_pkg_driver_ready_response reply;
+ struct icm_pkg_driver_ready request = {
+ .hdr.code = ICM_DRIVER_READY,
+ };
+ int ret;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (security_level)
+ *security_level = reply.security_level & ICM_FR_SLEVEL_MASK;
+
+ return 0;
+}
+
static int icm_fr_approve_switch(struct tb *tb, struct tb_switch *sw)
{
struct icm_fr_pkg_approve_device request;
memset(&reply, 0, sizeof(reply));
/* Use larger timeout as establishing tunnels can take some time */
ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
- 1, 10000);
+ 1, ICM_APPROVE_TIMEOUT);
if (ret)
return ret;
return 0;
}
+static void add_switch(struct tb_switch *parent_sw, u64 route,
+ const uuid_t *uuid, u8 connection_id, u8 connection_key,
+ u8 link, u8 depth, enum tb_security_level security_level,
+ bool authorized, bool boot)
+{
+ struct tb_switch *sw;
+
+ sw = tb_switch_alloc(parent_sw->tb, &parent_sw->dev, route);
+ if (!sw)
+ return;
+
+ sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL);
+ sw->connection_id = connection_id;
+ sw->connection_key = connection_key;
+ sw->link = link;
+ sw->depth = depth;
+ sw->authorized = authorized;
+ sw->security_level = security_level;
+ sw->boot = boot;
+
+ /* Link the two switches now */
+ tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
+ tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw);
+
+ if (tb_switch_add(sw)) {
+ tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
+ tb_switch_put(sw);
+ return;
+ }
+}
+
+static void update_switch(struct tb_switch *parent_sw, struct tb_switch *sw,
+ u64 route, u8 connection_id, u8 connection_key,
+ u8 link, u8 depth, bool boot)
+{
+ /* Disconnect from parent */
+ tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
+ /* Re-connect via updated port*/
+ tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
+
+ /* Update with the new addressing information */
+ sw->config.route_hi = upper_32_bits(route);
+ sw->config.route_lo = lower_32_bits(route);
+ sw->connection_id = connection_id;
+ sw->connection_key = connection_key;
+ sw->link = link;
+ sw->depth = depth;
+ sw->boot = boot;
+
+ /* This switch still exists */
+ sw->is_unplugged = false;
+}
+
static void remove_switch(struct tb_switch *sw)
{
struct tb_switch *parent_sw;
tb_switch_remove(sw);
}
+static void add_xdomain(struct tb_switch *sw, u64 route,
+ const uuid_t *local_uuid, const uuid_t *remote_uuid,
+ u8 link, u8 depth)
+{
+ struct tb_xdomain *xd;
+
+ xd = tb_xdomain_alloc(sw->tb, &sw->dev, route, local_uuid, remote_uuid);
+ if (!xd)
+ return;
+
+ xd->link = link;
+ xd->depth = depth;
+
+ tb_port_at(route, sw)->xdomain = xd;
+
+ tb_xdomain_add(xd);
+}
+
+static void update_xdomain(struct tb_xdomain *xd, u64 route, u8 link)
+{
+ xd->link = link;
+ xd->route = route;
+ xd->is_unplugged = false;
+}
+
+static void remove_xdomain(struct tb_xdomain *xd)
+{
+ struct tb_switch *sw;
+
+ sw = tb_to_switch(xd->dev.parent);
+ tb_port_at(xd->route, sw)->xdomain = NULL;
+ tb_xdomain_remove(xd);
+}
+
static void
icm_fr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr)
{
const struct icm_fr_event_device_connected *pkg =
(const struct icm_fr_event_device_connected *)hdr;
+ enum tb_security_level security_level;
struct tb_switch *sw, *parent_sw;
struct icm *icm = tb_priv(tb);
bool authorized = false;
+ struct tb_xdomain *xd;
u8 link, depth;
+ bool boot;
u64 route;
int ret;
depth = (pkg->link_info & ICM_LINK_INFO_DEPTH_MASK) >>
ICM_LINK_INFO_DEPTH_SHIFT;
authorized = pkg->link_info & ICM_LINK_INFO_APPROVED;
+ security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
+ ICM_FLAGS_SLEVEL_SHIFT;
+ boot = pkg->link_info & ICM_LINK_INFO_BOOT;
+
+ if (pkg->link_info & ICM_LINK_INFO_REJECTED) {
+ tb_info(tb, "switch at %u.%u was rejected by ICM firmware because topology limit exceeded\n",
+ link, depth);
+ return;
+ }
ret = icm->get_route(tb, link, depth, &route);
if (ret) {
*/
if (sw->depth == depth && sw_phy_port == phy_port &&
!!sw->authorized == authorized) {
- tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
- tb_port_at(route, parent_sw)->remote =
- tb_upstream_port(sw);
- sw->config.route_hi = upper_32_bits(route);
- sw->config.route_lo = lower_32_bits(route);
- sw->connection_id = pkg->connection_id;
- sw->connection_key = pkg->connection_key;
- sw->link = link;
- sw->depth = depth;
- sw->is_unplugged = false;
+ update_switch(parent_sw, sw, route, pkg->connection_id,
+ pkg->connection_key, link, depth, boot);
tb_switch_put(sw);
return;
}
tb_switch_put(sw);
}
+ /* Remove existing XDomain connection if found */
+ xd = tb_xdomain_find_by_link_depth(tb, link, depth);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
parent_sw = tb_switch_find_by_link_depth(tb, link, depth - 1);
if (!parent_sw) {
tb_err(tb, "failed to find parent switch for %u.%u\n",
return;
}
- sw = tb_switch_alloc(tb, &parent_sw->dev, route);
- if (!sw) {
- tb_switch_put(parent_sw);
- return;
- }
-
- sw->uuid = kmemdup(&pkg->ep_uuid, sizeof(pkg->ep_uuid), GFP_KERNEL);
- sw->connection_id = pkg->connection_id;
- sw->connection_key = pkg->connection_key;
- sw->link = link;
- sw->depth = depth;
- sw->authorized = authorized;
- sw->security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
- ICM_FLAGS_SLEVEL_SHIFT;
-
- /* Link the two switches now */
- tb_port_at(route, parent_sw)->remote = tb_upstream_port(sw);
- tb_upstream_port(sw)->remote = tb_port_at(route, parent_sw);
+ add_switch(parent_sw, route, &pkg->ep_uuid, pkg->connection_id,
+ pkg->connection_key, link, depth, security_level,
+ authorized, boot);
- ret = tb_switch_add(sw);
- if (ret) {
- tb_port_at(tb_route(sw), parent_sw)->remote = NULL;
- tb_switch_put(sw);
- }
tb_switch_put(parent_sw);
}
tb_switch_put(sw);
}
-static void remove_xdomain(struct tb_xdomain *xd)
-{
- struct tb_switch *sw;
-
- sw = tb_to_switch(xd->dev.parent);
- tb_port_at(xd->route, sw)->xdomain = NULL;
- tb_xdomain_remove(xd);
-}
-
static void
icm_fr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
{
phy_port = phy_port_from_route(route, depth);
if (xd->depth == depth && xd_phy_port == phy_port) {
- xd->link = link;
- xd->route = route;
- xd->is_unplugged = false;
+ update_xdomain(xd, route, link);
tb_xdomain_put(xd);
return;
}
return;
}
- xd = tb_xdomain_alloc(sw->tb, &sw->dev, route,
- &pkg->local_uuid, &pkg->remote_uuid);
- if (!xd) {
- tb_switch_put(sw);
- return;
- }
-
- xd->link = link;
- xd->depth = depth;
-
- tb_port_at(route, sw)->xdomain = xd;
-
- tb_xdomain_add(xd);
+ add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, link,
+ depth);
tb_switch_put(sw);
}
}
}
+static int
+icm_tr_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl)
+{
+ struct icm_tr_pkg_driver_ready_response reply;
+ struct icm_pkg_driver_ready request = {
+ .hdr.code = ICM_DRIVER_READY,
+ };
+ int ret;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, 20000);
+ if (ret)
+ return ret;
+
+ if (security_level)
+ *security_level = reply.info & ICM_TR_INFO_SLEVEL_MASK;
+ if (nboot_acl)
+ *nboot_acl = (reply.info & ICM_TR_INFO_BOOT_ACL_MASK) >>
+ ICM_TR_INFO_BOOT_ACL_SHIFT;
+ return 0;
+}
+
+static int icm_tr_approve_switch(struct tb *tb, struct tb_switch *sw)
+{
+ struct icm_tr_pkg_approve_device request;
+ struct icm_tr_pkg_approve_device reply;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_APPROVE_DEVICE;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_APPROVE_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR) {
+ tb_warn(tb, "PCIe tunnel creation failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int icm_tr_add_switch_key(struct tb *tb, struct tb_switch *sw)
+{
+ struct icm_tr_pkg_add_device_key_response reply;
+ struct icm_tr_pkg_add_device_key request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_ADD_DEVICE_KEY;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+ memcpy(request.key, sw->key, TB_SWITCH_KEY_SIZE);
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR) {
+ tb_warn(tb, "Adding key to switch failed\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int icm_tr_challenge_switch_key(struct tb *tb, struct tb_switch *sw,
+ const u8 *challenge, u8 *response)
+{
+ struct icm_tr_pkg_challenge_device_response reply;
+ struct icm_tr_pkg_challenge_device request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ memcpy(&request.ep_uuid, sw->uuid, sizeof(request.ep_uuid));
+ request.hdr.code = ICM_CHALLENGE_DEVICE;
+ request.route_lo = sw->config.route_lo;
+ request.route_hi = sw->config.route_hi;
+ request.connection_id = sw->connection_id;
+ memcpy(request.challenge, challenge, TB_SWITCH_KEY_SIZE);
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EKEYREJECTED;
+ if (reply.hdr.flags & ICM_FLAGS_NO_KEY)
+ return -ENOKEY;
+
+ memcpy(response, reply.response, TB_SWITCH_KEY_SIZE);
+
+ return 0;
+}
+
+static int icm_tr_approve_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
+{
+ struct icm_tr_pkg_approve_xdomain_response reply;
+ struct icm_tr_pkg_approve_xdomain request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ request.hdr.code = ICM_APPROVE_XDOMAIN;
+ request.route_hi = upper_32_bits(xd->route);
+ request.route_lo = lower_32_bits(xd->route);
+ request.transmit_path = xd->transmit_path;
+ request.transmit_ring = xd->transmit_ring;
+ request.receive_path = xd->receive_path;
+ request.receive_ring = xd->receive_ring;
+ memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid));
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
+static int icm_tr_xdomain_tear_down(struct tb *tb, struct tb_xdomain *xd,
+ int stage)
+{
+ struct icm_tr_pkg_disconnect_xdomain_response reply;
+ struct icm_tr_pkg_disconnect_xdomain request;
+ int ret;
+
+ memset(&request, 0, sizeof(request));
+ request.hdr.code = ICM_DISCONNECT_XDOMAIN;
+ request.stage = stage;
+ request.route_hi = upper_32_bits(xd->route);
+ request.route_lo = lower_32_bits(xd->route);
+ memcpy(&request.remote_uuid, xd->remote_uuid, sizeof(*xd->remote_uuid));
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
+static int icm_tr_disconnect_xdomain_paths(struct tb *tb, struct tb_xdomain *xd)
+{
+ int ret;
+
+ ret = icm_tr_xdomain_tear_down(tb, xd, 1);
+ if (ret)
+ return ret;
+
+ usleep_range(10, 50);
+ return icm_tr_xdomain_tear_down(tb, xd, 2);
+}
+
+static void
+icm_tr_device_connected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_tr_event_device_connected *pkg =
+ (const struct icm_tr_event_device_connected *)hdr;
+ enum tb_security_level security_level;
+ struct tb_switch *sw, *parent_sw;
+ struct tb_xdomain *xd;
+ bool authorized, boot;
+ u64 route;
+
+ /*
+ * Currently we don't use the QoS information coming with the
+ * device connected message so simply just ignore that extra
+ * packet for now.
+ */
+ if (pkg->hdr.packet_id)
+ return;
+
+ /*
+ * After NVM upgrade adding root switch device fails because we
+ * initiated reset. During that time ICM might still send device
+ * connected message which we ignore here.
+ */
+ if (!tb->root_switch)
+ return;
+
+ route = get_route(pkg->route_hi, pkg->route_lo);
+ authorized = pkg->link_info & ICM_LINK_INFO_APPROVED;
+ security_level = (pkg->hdr.flags & ICM_FLAGS_SLEVEL_MASK) >>
+ ICM_FLAGS_SLEVEL_SHIFT;
+ boot = pkg->link_info & ICM_LINK_INFO_BOOT;
+
+ if (pkg->link_info & ICM_LINK_INFO_REJECTED) {
+ tb_info(tb, "switch at %llx was rejected by ICM firmware because topology limit exceeded\n",
+ route);
+ return;
+ }
+
+ sw = tb_switch_find_by_uuid(tb, &pkg->ep_uuid);
+ if (sw) {
+ /* Update the switch if it is still in the same place */
+ if (tb_route(sw) == route && !!sw->authorized == authorized) {
+ parent_sw = tb_to_switch(sw->dev.parent);
+ update_switch(parent_sw, sw, route, pkg->connection_id,
+ 0, 0, 0, boot);
+ tb_switch_put(sw);
+ return;
+ }
+
+ remove_switch(sw);
+ tb_switch_put(sw);
+ }
+
+ /* Another switch with the same address */
+ sw = tb_switch_find_by_route(tb, route);
+ if (sw) {
+ remove_switch(sw);
+ tb_switch_put(sw);
+ }
+
+ /* XDomain connection with the same address */
+ xd = tb_xdomain_find_by_route(tb, route);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ parent_sw = tb_switch_find_by_route(tb, get_parent_route(route));
+ if (!parent_sw) {
+ tb_err(tb, "failed to find parent switch for %llx\n", route);
+ return;
+ }
+
+ add_switch(parent_sw, route, &pkg->ep_uuid, pkg->connection_id,
+ 0, 0, 0, security_level, authorized, boot);
+
+ tb_switch_put(parent_sw);
+}
+
+static void
+icm_tr_device_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_tr_event_device_disconnected *pkg =
+ (const struct icm_tr_event_device_disconnected *)hdr;
+ struct tb_switch *sw;
+ u64 route;
+
+ route = get_route(pkg->route_hi, pkg->route_lo);
+
+ sw = tb_switch_find_by_route(tb, route);
+ if (!sw) {
+ tb_warn(tb, "no switch exists at %llx, ignoring\n", route);
+ return;
+ }
+
+ remove_switch(sw);
+ tb_switch_put(sw);
+}
+
+static void
+icm_tr_xdomain_connected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_tr_event_xdomain_connected *pkg =
+ (const struct icm_tr_event_xdomain_connected *)hdr;
+ struct tb_xdomain *xd;
+ struct tb_switch *sw;
+ u64 route;
+
+ if (!tb->root_switch)
+ return;
+
+ route = get_route(pkg->local_route_hi, pkg->local_route_lo);
+
+ xd = tb_xdomain_find_by_uuid(tb, &pkg->remote_uuid);
+ if (xd) {
+ if (xd->route == route) {
+ update_xdomain(xd, route, 0);
+ tb_xdomain_put(xd);
+ return;
+ }
+
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ /* An existing xdomain with the same address */
+ xd = tb_xdomain_find_by_route(tb, route);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+
+ /*
+ * If the user disconnected a switch during suspend and
+ * connected another host to the same port, remove the switch
+ * first.
+ */
+ sw = get_switch_at_route(tb->root_switch, route);
+ if (sw)
+ remove_switch(sw);
+
+ sw = tb_switch_find_by_route(tb, get_parent_route(route));
+ if (!sw) {
+ tb_warn(tb, "no switch exists at %llx, ignoring\n", route);
+ return;
+ }
+
+ add_xdomain(sw, route, &pkg->local_uuid, &pkg->remote_uuid, 0, 0);
+ tb_switch_put(sw);
+}
+
+static void
+icm_tr_xdomain_disconnected(struct tb *tb, const struct icm_pkg_header *hdr)
+{
+ const struct icm_tr_event_xdomain_disconnected *pkg =
+ (const struct icm_tr_event_xdomain_disconnected *)hdr;
+ struct tb_xdomain *xd;
+ u64 route;
+
+ route = get_route(pkg->route_hi, pkg->route_lo);
+
+ xd = tb_xdomain_find_by_route(tb, route);
+ if (xd) {
+ remove_xdomain(xd);
+ tb_xdomain_put(xd);
+ }
+}
+
static struct pci_dev *get_upstream_port(struct pci_dev *pdev)
{
struct pci_dev *parent;
static int icm_ar_get_mode(struct tb *tb)
{
struct tb_nhi *nhi = tb->nhi;
- int retries = 5;
+ int retries = 60;
u32 val;
do {
val = ioread32(nhi->iobase + REG_FW_STS);
if (val & REG_FW_STS_NVM_AUTH_DONE)
break;
- msleep(30);
+ msleep(50);
} while (--retries);
if (!retries) {
return nhi_mailbox_mode(nhi);
}
+static int
+icm_ar_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl)
+{
+ struct icm_ar_pkg_driver_ready_response reply;
+ struct icm_pkg_driver_ready request = {
+ .hdr.code = ICM_DRIVER_READY,
+ };
+ int ret;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (security_level)
+ *security_level = reply.info & ICM_AR_INFO_SLEVEL_MASK;
+ if (nboot_acl && (reply.info & ICM_AR_INFO_BOOT_ACL_SUPPORTED))
+ *nboot_acl = (reply.info & ICM_AR_INFO_BOOT_ACL_MASK) >>
+ ICM_AR_INFO_BOOT_ACL_SHIFT;
+ return 0;
+}
+
static int icm_ar_get_route(struct tb *tb, u8 link, u8 depth, u64 *route)
{
struct icm_ar_pkg_get_route_response reply;
return 0;
}
+static int icm_ar_get_boot_acl(struct tb *tb, uuid_t *uuids, size_t nuuids)
+{
+ struct icm_ar_pkg_preboot_acl_response reply;
+ struct icm_ar_pkg_preboot_acl request = {
+ .hdr = { .code = ICM_PREBOOT_ACL },
+ };
+ int ret, i;
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ for (i = 0; i < nuuids; i++) {
+ u32 *uuid = (u32 *)&uuids[i];
+
+ uuid[0] = reply.acl[i].uuid_lo;
+ uuid[1] = reply.acl[i].uuid_hi;
+
+ if (uuid[0] == 0xffffffff && uuid[1] == 0xffffffff) {
+ /* Map empty entries to null UUID */
+ uuid[0] = 0;
+ uuid[1] = 0;
+ } else {
+ /* Upper two DWs are always one's */
+ uuid[2] = 0xffffffff;
+ uuid[3] = 0xffffffff;
+ }
+ }
+
+ return ret;
+}
+
+static int icm_ar_set_boot_acl(struct tb *tb, const uuid_t *uuids,
+ size_t nuuids)
+{
+ struct icm_ar_pkg_preboot_acl_response reply;
+ struct icm_ar_pkg_preboot_acl request = {
+ .hdr = {
+ .code = ICM_PREBOOT_ACL,
+ .flags = ICM_FLAGS_WRITE,
+ },
+ };
+ int ret, i;
+
+ for (i = 0; i < nuuids; i++) {
+ const u32 *uuid = (const u32 *)&uuids[i];
+
+ if (uuid_is_null(&uuids[i])) {
+ /*
+ * Map null UUID to the empty (all one) entries
+ * for ICM.
+ */
+ request.acl[i].uuid_lo = 0xffffffff;
+ request.acl[i].uuid_hi = 0xffffffff;
+ } else {
+ /* Two high DWs need to be set to all one */
+ if (uuid[2] != 0xffffffff || uuid[3] != 0xffffffff)
+ return -EINVAL;
+
+ request.acl[i].uuid_lo = uuid[0];
+ request.acl[i].uuid_hi = uuid[1];
+ }
+ }
+
+ memset(&reply, 0, sizeof(reply));
+ ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
+ 1, ICM_TIMEOUT);
+ if (ret)
+ return ret;
+
+ if (reply.hdr.flags & ICM_FLAGS_ERROR)
+ return -EIO;
+
+ return 0;
+}
+
static void icm_handle_notification(struct work_struct *work)
{
struct icm_notification *n = container_of(work, typeof(*n), work);
}
static int
-__icm_driver_ready(struct tb *tb, enum tb_security_level *security_level)
+__icm_driver_ready(struct tb *tb, enum tb_security_level *security_level,
+ size_t *nboot_acl)
{
- struct icm_pkg_driver_ready_response reply;
- struct icm_pkg_driver_ready request = {
- .hdr.code = ICM_DRIVER_READY,
- };
- unsigned int retries = 10;
+ struct icm *icm = tb_priv(tb);
+ unsigned int retries = 50;
int ret;
- memset(&reply, 0, sizeof(reply));
- ret = icm_request(tb, &request, sizeof(request), &reply, sizeof(reply),
- 1, ICM_TIMEOUT);
- if (ret)
+ ret = icm->driver_ready(tb, security_level, nboot_acl);
+ if (ret) {
+ tb_err(tb, "failed to send driver ready to ICM\n");
return ret;
-
- if (security_level)
- *security_level = reply.security_level & 0xf;
+ }
/*
* Hold on here until the switch config space is accessible so
msleep(50);
} while (--retries);
+ tb_err(tb, "failed to read root switch config space, giving up\n");
return -ETIMEDOUT;
}
struct icm *icm = tb_priv(tb);
u32 val;
+ if (!icm->upstream_port)
+ return -ENODEV;
+
/* Put ARC to wait for CIO reset event to happen */
val = ioread32(nhi->iobase + REG_FW_STS);
val |= REG_FW_STS_CIO_RESET_REQ;
break;
default:
+ if (ret < 0)
+ return ret;
+
tb_err(tb, "ICM firmware is in wrong mode: %u\n", ret);
return -ENODEV;
}
return 0;
}
- return __icm_driver_ready(tb, &tb->security_level);
+ ret = __icm_driver_ready(tb, &tb->security_level, &tb->nboot_acl);
+ if (ret)
+ return ret;
+
+ /*
+ * Make sure the number of supported preboot ACL matches what we
+ * expect or disable the whole feature.
+ */
+ if (tb->nboot_acl > icm->max_boot_acl)
+ tb->nboot_acl = 0;
+
+ return 0;
}
static int icm_suspend(struct tb *tb)
* Now all existing children should be resumed, start events
* from ICM to get updated status.
*/
- __icm_driver_ready(tb, NULL);
+ __icm_driver_ready(tb, NULL, NULL);
/*
* We do not get notifications of devices that have been
return nhi_mailbox_cmd(tb->nhi, NHI_MAILBOX_DISCONNECT_PCIE_PATHS, 0);
}
-/* Falcon Ridge and Alpine Ridge */
+/* Falcon Ridge */
static const struct tb_cm_ops icm_fr_ops = {
.driver_ready = icm_driver_ready,
.start = icm_start,
.disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths,
};
+/* Alpine Ridge */
+static const struct tb_cm_ops icm_ar_ops = {
+ .driver_ready = icm_driver_ready,
+ .start = icm_start,
+ .stop = icm_stop,
+ .suspend = icm_suspend,
+ .complete = icm_complete,
+ .handle_event = icm_handle_event,
+ .get_boot_acl = icm_ar_get_boot_acl,
+ .set_boot_acl = icm_ar_set_boot_acl,
+ .approve_switch = icm_fr_approve_switch,
+ .add_switch_key = icm_fr_add_switch_key,
+ .challenge_switch_key = icm_fr_challenge_switch_key,
+ .disconnect_pcie_paths = icm_disconnect_pcie_paths,
+ .approve_xdomain_paths = icm_fr_approve_xdomain_paths,
+ .disconnect_xdomain_paths = icm_fr_disconnect_xdomain_paths,
+};
+
+/* Titan Ridge */
+static const struct tb_cm_ops icm_tr_ops = {
+ .driver_ready = icm_driver_ready,
+ .start = icm_start,
+ .stop = icm_stop,
+ .suspend = icm_suspend,
+ .complete = icm_complete,
+ .handle_event = icm_handle_event,
+ .get_boot_acl = icm_ar_get_boot_acl,
+ .set_boot_acl = icm_ar_set_boot_acl,
+ .approve_switch = icm_tr_approve_switch,
+ .add_switch_key = icm_tr_add_switch_key,
+ .challenge_switch_key = icm_tr_challenge_switch_key,
+ .disconnect_pcie_paths = icm_disconnect_pcie_paths,
+ .approve_xdomain_paths = icm_tr_approve_xdomain_paths,
+ .disconnect_xdomain_paths = icm_tr_disconnect_xdomain_paths,
+};
+
struct tb *icm_probe(struct tb_nhi *nhi)
{
struct icm *icm;
case PCI_DEVICE_ID_INTEL_FALCON_RIDGE_4C_NHI:
icm->is_supported = icm_fr_is_supported;
icm->get_route = icm_fr_get_route;
+ icm->driver_ready = icm_fr_driver_ready;
icm->device_connected = icm_fr_device_connected;
icm->device_disconnected = icm_fr_device_disconnected;
icm->xdomain_connected = icm_fr_xdomain_connected;
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_NHI:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI:
+ icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES;
icm->is_supported = icm_ar_is_supported;
icm->get_mode = icm_ar_get_mode;
icm->get_route = icm_ar_get_route;
+ icm->driver_ready = icm_ar_driver_ready;
icm->device_connected = icm_fr_device_connected;
icm->device_disconnected = icm_fr_device_disconnected;
icm->xdomain_connected = icm_fr_xdomain_connected;
icm->xdomain_disconnected = icm_fr_xdomain_disconnected;
- tb->cm_ops = &icm_fr_ops;
+ tb->cm_ops = &icm_ar_ops;
+ break;
+
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI:
+ icm->max_boot_acl = ICM_AR_PREBOOT_ACL_ENTRIES;
+ icm->is_supported = icm_ar_is_supported;
+ icm->get_mode = icm_ar_get_mode;
+ icm->driver_ready = icm_tr_driver_ready;
+ icm->device_connected = icm_tr_device_connected;
+ icm->device_disconnected = icm_tr_device_disconnected;
+ icm->xdomain_connected = icm_tr_xdomain_connected;
+ icm->xdomain_disconnected = icm_tr_xdomain_disconnected;
+ tb->cm_ops = &icm_tr_ops;
break;
}
*/
tb_domain_put(tb);
nhi_shutdown(nhi);
- return -EIO;
+ return res;
}
pci_set_drvdata(pdev, tb);
* we just disable hotplug, the
* pci-tunnels stay alive.
*/
+ .thaw_noirq = nhi_resume_noirq,
.restore_noirq = nhi_resume_noirq,
.suspend = nhi_suspend,
.freeze = nhi_suspend,
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_NHI) },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_NHI) },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_USBONLY_NHI) },
+ { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI) },
+ { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI) },
{ 0,}
};
#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_LP_USBONLY_NHI 0x15dc
#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_USBONLY_NHI 0x15dd
#define PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_USBONLY_NHI 0x15de
+#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE 0x15e7
+#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_NHI 0x15e8
+#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE 0x15ea
+#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_NHI 0x15eb
+#define PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE 0x15ef
#endif
if (sw->authorized)
goto unlock;
+ /*
+ * Make sure there is no PCIe rescan ongoing when a new PCIe
+ * tunnel is created. Otherwise the PCIe rescan code might find
+ * the new tunnel too early.
+ */
+ pci_lock_rescan_remove();
+
switch (val) {
/* Approve switch */
case 1:
break;
}
+ pci_unlock_rescan_remove();
+
if (!ret) {
sw->authorized = val;
/* Notify status change to the userspace */
}
static DEVICE_ATTR_RW(authorized);
+static ssize_t boot_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct tb_switch *sw = tb_to_switch(dev);
+
+ return sprintf(buf, "%u\n", sw->boot);
+}
+static DEVICE_ATTR_RO(boot);
+
static ssize_t device_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
static struct attribute *switch_attrs[] = {
&dev_attr_authorized.attr,
+ &dev_attr_boot.attr,
&dev_attr_device.attr,
&dev_attr_device_name.attr,
&dev_attr_key.attr,
if (sw->dma_port)
return attr->mode;
return 0;
+ } else if (attr == &dev_attr_boot.attr) {
+ if (tb_route(sw))
+ return attr->mode;
+ return 0;
}
return sw->safe_mode ? 0 : attr->mode;
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_4C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_2C_BRIDGE:
case PCI_DEVICE_ID_INTEL_ALPINE_RIDGE_C_4C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_2C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_4C_BRIDGE:
+ case PCI_DEVICE_ID_INTEL_TITAN_RIDGE_DD_BRIDGE:
return 3;
default:
u8 link;
u8 depth;
const uuid_t *uuid;
+ u64 route;
};
static int tb_switch_match(struct device *dev, void *data)
if (lookup->uuid)
return !memcmp(sw->uuid, lookup->uuid, sizeof(*lookup->uuid));
+ if (lookup->route) {
+ return sw->config.route_lo == lower_32_bits(lookup->route) &&
+ sw->config.route_hi == upper_32_bits(lookup->route);
+ }
+
/* Root switch is matched only by depth */
if (!lookup->depth)
return !sw->depth;
}
/**
- * tb_switch_find_by_link_depth() - Find switch by UUID
+ * tb_switch_find_by_uuid() - Find switch by UUID
* @tb: Domain the switch belongs
* @uuid: UUID to look for
*
return NULL;
}
+/**
+ * tb_switch_find_by_route() - Find switch by route string
+ * @tb: Domain the switch belongs
+ * @route: Route string to look for
+ *
+ * Returned switch has reference count increased so the caller needs to
+ * call tb_switch_put() when done with the switch.
+ */
+struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route)
+{
+ struct tb_sw_lookup lookup;
+ struct device *dev;
+
+ if (!route)
+ return tb_switch_get(tb->root_switch);
+
+ memset(&lookup, 0, sizeof(lookup));
+ lookup.tb = tb;
+ lookup.route = route;
+
+ dev = bus_find_device(&tb_bus_type, NULL, &lookup, tb_switch_match);
+ if (dev)
+ return tb_to_switch(dev);
+
+ return NULL;
+}
+
void tb_switch_exit(void)
{
ida_destroy(&nvm_ida);
* @nvm: Pointer to the NVM if the switch has one (%NULL otherwise)
* @no_nvm_upgrade: Prevent NVM upgrade of this switch
* @safe_mode: The switch is in safe-mode
+ * @boot: Whether the switch was already authorized on boot or not
* @authorized: Whether the switch is authorized by user or policy
* @work: Work used to automatically authorize a switch
* @security_level: Switch supported security level
struct tb_switch_nvm *nvm;
bool no_nvm_upgrade;
bool safe_mode;
+ bool boot;
unsigned int authorized;
struct work_struct work;
enum tb_security_level security_level;
* @suspend: Connection manager specific suspend
* @complete: Connection manager specific complete
* @handle_event: Handle thunderbolt event
+ * @get_boot_acl: Get boot ACL list
+ * @set_boot_acl: Set boot ACL list
* @approve_switch: Approve switch
* @add_switch_key: Add key to switch
* @challenge_switch_key: Challenge switch using key
void (*complete)(struct tb *tb);
void (*handle_event)(struct tb *tb, enum tb_cfg_pkg_type,
const void *buf, size_t size);
+ int (*get_boot_acl)(struct tb *tb, uuid_t *uuids, size_t nuuids);
+ int (*set_boot_acl)(struct tb *tb, const uuid_t *uuids, size_t nuuids);
int (*approve_switch)(struct tb *tb, struct tb_switch *sw);
int (*add_switch_key)(struct tb *tb, struct tb_switch *sw);
int (*challenge_switch_key)(struct tb *tb, struct tb_switch *sw,
struct tb_switch *tb_switch_find_by_link_depth(struct tb *tb, u8 link,
u8 depth);
struct tb_switch *tb_switch_find_by_uuid(struct tb *tb, const uuid_t *uuid);
+struct tb_switch *tb_switch_find_by_route(struct tb *tb, u64 route);
+
+static inline struct tb_switch *tb_switch_get(struct tb_switch *sw)
+{
+ if (sw)
+ get_device(&sw->dev);
+ return sw;
+}
static inline void tb_switch_put(struct tb_switch *sw)
{
ICM_ADD_DEVICE_KEY = 0x6,
ICM_GET_ROUTE = 0xa,
ICM_APPROVE_XDOMAIN = 0x10,
+ ICM_DISCONNECT_XDOMAIN = 0x11,
+ ICM_PREBOOT_ACL = 0x18,
};
enum icm_event_code {
#define ICM_FLAGS_NO_KEY BIT(1)
#define ICM_FLAGS_SLEVEL_SHIFT 3
#define ICM_FLAGS_SLEVEL_MASK GENMASK(4, 3)
+#define ICM_FLAGS_WRITE BIT(7)
struct icm_pkg_driver_ready {
struct icm_pkg_header hdr;
};
-struct icm_pkg_driver_ready_response {
+/* Falcon Ridge only messages */
+
+struct icm_fr_pkg_driver_ready_response {
struct icm_pkg_header hdr;
u8 romver;
u8 ramver;
u16 security_level;
};
+#define ICM_FR_SLEVEL_MASK 0xf
+
/* Falcon Ridge & Alpine Ridge common messages */
struct icm_fr_pkg_get_topology {
#define ICM_LINK_INFO_DEPTH_SHIFT 4
#define ICM_LINK_INFO_DEPTH_MASK GENMASK(7, 4)
#define ICM_LINK_INFO_APPROVED BIT(8)
+#define ICM_LINK_INFO_REJECTED BIT(9)
+#define ICM_LINK_INFO_BOOT BIT(10)
struct icm_fr_pkg_approve_device {
struct icm_pkg_header hdr;
/* Alpine Ridge only messages */
+struct icm_ar_pkg_driver_ready_response {
+ struct icm_pkg_header hdr;
+ u8 romver;
+ u8 ramver;
+ u16 info;
+};
+
+#define ICM_AR_INFO_SLEVEL_MASK GENMASK(3, 0)
+#define ICM_AR_INFO_BOOT_ACL_SHIFT 7
+#define ICM_AR_INFO_BOOT_ACL_MASK GENMASK(11, 7)
+#define ICM_AR_INFO_BOOT_ACL_SUPPORTED BIT(13)
+
struct icm_ar_pkg_get_route {
struct icm_pkg_header hdr;
u16 reserved;
u32 route_lo;
};
+struct icm_ar_boot_acl_entry {
+ u32 uuid_lo;
+ u32 uuid_hi;
+};
+
+#define ICM_AR_PREBOOT_ACL_ENTRIES 16
+
+struct icm_ar_pkg_preboot_acl {
+ struct icm_pkg_header hdr;
+ struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
+};
+
+struct icm_ar_pkg_preboot_acl_response {
+ struct icm_pkg_header hdr;
+ struct icm_ar_boot_acl_entry acl[ICM_AR_PREBOOT_ACL_ENTRIES];
+};
+
+/* Titan Ridge messages */
+
+struct icm_tr_pkg_driver_ready_response {
+ struct icm_pkg_header hdr;
+ u16 reserved1;
+ u16 info;
+ u32 nvm_version;
+ u16 device_id;
+ u16 reserved2;
+};
+
+#define ICM_TR_INFO_SLEVEL_MASK GENMASK(2, 0)
+#define ICM_TR_INFO_BOOT_ACL_SHIFT 7
+#define ICM_TR_INFO_BOOT_ACL_MASK GENMASK(12, 7)
+
+struct icm_tr_event_device_connected {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved;
+ u16 link_info;
+ u32 ep_name[55];
+};
+
+struct icm_tr_event_device_disconnected {
+ struct icm_pkg_header hdr;
+ u32 route_hi;
+ u32 route_lo;
+};
+
+struct icm_tr_event_xdomain_connected {
+ struct icm_pkg_header hdr;
+ u16 reserved;
+ u16 link_info;
+ uuid_t remote_uuid;
+ uuid_t local_uuid;
+ u32 local_route_hi;
+ u32 local_route_lo;
+ u32 remote_route_hi;
+ u32 remote_route_lo;
+};
+
+struct icm_tr_event_xdomain_disconnected {
+ struct icm_pkg_header hdr;
+ u32 route_hi;
+ u32 route_lo;
+ uuid_t remote_uuid;
+};
+
+struct icm_tr_pkg_approve_device {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved1[3];
+};
+
+struct icm_tr_pkg_add_device_key {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved[3];
+ u32 key[8];
+};
+
+struct icm_tr_pkg_challenge_device {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved[3];
+ u32 challenge[8];
+};
+
+struct icm_tr_pkg_approve_xdomain {
+ struct icm_pkg_header hdr;
+ u32 route_hi;
+ u32 route_lo;
+ uuid_t remote_uuid;
+ u16 transmit_path;
+ u16 transmit_ring;
+ u16 receive_path;
+ u16 receive_ring;
+};
+
+struct icm_tr_pkg_disconnect_xdomain {
+ struct icm_pkg_header hdr;
+ u8 stage;
+ u8 reserved[3];
+ u32 route_hi;
+ u32 route_lo;
+ uuid_t remote_uuid;
+};
+
+struct icm_tr_pkg_challenge_device_response {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved[3];
+ u32 challenge[8];
+ u32 response[8];
+};
+
+struct icm_tr_pkg_add_device_key_response {
+ struct icm_pkg_header hdr;
+ uuid_t ep_uuid;
+ u32 route_hi;
+ u32 route_lo;
+ u8 connection_id;
+ u8 reserved[3];
+};
+
+struct icm_tr_pkg_approve_xdomain_response {
+ struct icm_pkg_header hdr;
+ u32 route_hi;
+ u32 route_lo;
+ uuid_t remote_uuid;
+ u16 transmit_path;
+ u16 transmit_ring;
+ u16 receive_path;
+ u16 receive_ring;
+};
+
+struct icm_tr_pkg_disconnect_xdomain_response {
+ struct icm_pkg_header hdr;
+ u8 stage;
+ u8 reserved[3];
+ u32 route_hi;
+ u32 route_lo;
+ uuid_t remote_uuid;
+};
+
/* XDomain messages */
struct tb_xdomain_header {
const uuid_t *uuid;
u8 link;
u8 depth;
+ u64 route;
};
static struct tb_xdomain *switch_find_xdomain(struct tb_switch *sw,
if (lookup->uuid) {
if (uuid_equal(xd->remote_uuid, lookup->uuid))
return xd;
- } else if (lookup->link == xd->link &&
+ } else if (lookup->link &&
+ lookup->link == xd->link &&
lookup->depth == xd->depth) {
return xd;
+ } else if (lookup->route &&
+ lookup->route == xd->route) {
+ return xd;
}
} else if (port->remote) {
xd = switch_find_xdomain(port->remote->sw, lookup);
lookup.uuid = uuid;
xd = switch_find_xdomain(tb->root_switch, &lookup);
- if (xd) {
- get_device(&xd->dev);
- return xd;
- }
-
- return NULL;
+ return tb_xdomain_get(xd);
}
EXPORT_SYMBOL_GPL(tb_xdomain_find_by_uuid);
lookup.depth = depth;
xd = switch_find_xdomain(tb->root_switch, &lookup);
- if (xd) {
- get_device(&xd->dev);
- return xd;
- }
+ return tb_xdomain_get(xd);
+}
- return NULL;
+/**
+ * tb_xdomain_find_by_route() - Find an XDomain by route string
+ * @tb: Domain where the XDomain belongs to
+ * @route: XDomain route string
+ *
+ * Finds XDomain by walking through the Thunderbolt topology below @tb.
+ * The returned XDomain will have its reference count increased so the
+ * caller needs to call tb_xdomain_put() when it is done with the
+ * object.
+ *
+ * This will find all XDomains including the ones that are not yet added
+ * to the bus (handshake is still in progress).
+ *
+ * The caller needs to hold @tb->lock.
+ */
+struct tb_xdomain *tb_xdomain_find_by_route(struct tb *tb, u64 route)
+{
+ struct tb_xdomain_lookup lookup;
+ struct tb_xdomain *xd;
+
+ memset(&lookup, 0, sizeof(lookup));
+ lookup.route = route;
+
+ xd = switch_find_xdomain(tb->root_switch, &lookup);
+ return tb_xdomain_get(xd);
}
+EXPORT_SYMBOL_GPL(tb_xdomain_find_by_route);
bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
const void *buf, size_t size)
uio_event_notify(&pdata->info);
}
+/*
+ * Handle fault when looking for sub channel ring buffer
+ * Subchannel ring buffer is same as resource 0 which is main ring buffer
+ * This is derived from uio_vma_fault
+ */
+static int hv_uio_vma_fault(struct vm_fault *vmf)
+{
+ struct vm_area_struct *vma = vmf->vma;
+ void *ring_buffer = vma->vm_private_data;
+ struct page *page;
+ void *addr;
+
+ addr = ring_buffer + (vmf->pgoff << PAGE_SHIFT);
+ page = virt_to_page(addr);
+ get_page(page);
+ vmf->page = page;
+ return 0;
+}
+
+static const struct vm_operations_struct hv_uio_vm_ops = {
+ .fault = hv_uio_vma_fault,
+};
+
+/* Sysfs API to allow mmap of the ring buffers */
+static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *attr,
+ struct vm_area_struct *vma)
+{
+ struct vmbus_channel *channel
+ = container_of(kobj, struct vmbus_channel, kobj);
+ unsigned long requested_pages, actual_pages;
+
+ if (vma->vm_end < vma->vm_start)
+ return -EINVAL;
+
+ /* only allow 0 for now */
+ if (vma->vm_pgoff > 0)
+ return -EINVAL;
+
+ requested_pages = vma_pages(vma);
+ actual_pages = 2 * HV_RING_SIZE;
+ if (requested_pages > actual_pages)
+ return -EINVAL;
+
+ vma->vm_private_data = channel->ringbuffer_pages;
+ vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
+ vma->vm_ops = &hv_uio_vm_ops;
+ return 0;
+}
+
+static struct bin_attribute ring_buffer_bin_attr __ro_after_init = {
+ .attr = {
+ .name = "ring",
+ .mode = 0600,
+ /* size is set at init time */
+ },
+ .mmap = hv_uio_ring_mmap,
+};
+
+/* Callback from VMBUS subystem when new channel created. */
+static void
+hv_uio_new_channel(struct vmbus_channel *new_sc)
+{
+ struct hv_device *hv_dev = new_sc->primary_channel->device_obj;
+ struct device *device = &hv_dev->device;
+ struct hv_uio_private_data *pdata = hv_get_drvdata(hv_dev);
+ const size_t ring_bytes = HV_RING_SIZE * PAGE_SIZE;
+ int ret;
+
+ /* Create host communication ring */
+ ret = vmbus_open(new_sc, ring_bytes, ring_bytes, NULL, 0,
+ hv_uio_channel_cb, pdata);
+ if (ret) {
+ dev_err(device, "vmbus_open subchannel failed: %d\n", ret);
+ return;
+ }
+
+ /* Disable interrupts on sub channel */
+ new_sc->inbound.ring_buffer->interrupt_mask = 1;
+ set_channel_read_mode(new_sc, HV_CALL_ISR);
+
+ ret = sysfs_create_bin_file(&new_sc->kobj, &ring_buffer_bin_attr);
+ if (ret) {
+ dev_err(device, "sysfs create ring bin file failed; %d\n", ret);
+ vmbus_close(new_sc);
+ }
+}
+
static void
hv_uio_cleanup(struct hv_device *dev, struct hv_uio_private_data *pdata)
{
}
vmbus_set_chn_rescind_callback(dev->channel, hv_uio_rescind);
+ vmbus_set_sc_create_callback(dev->channel, hv_uio_new_channel);
hv_set_drvdata(dev, pdata);
dev_err(&sl->dev,
"Device registration [%s] failed. err=%d\n",
dev_name(&sl->dev), err);
+ put_device(&sl->dev);
return err;
}
w1_family_notify(BUS_NOTIFY_ADD_DEVICE, sl);
int i;
struct char_device_struct *cd;
- for (i = ARRAY_SIZE(chrdevs)-1; i > CHRDEV_MAJOR_DYN_END; i--) {
+ for (i = ARRAY_SIZE(chrdevs)-1; i >= CHRDEV_MAJOR_DYN_END; i--) {
if (chrdevs[i] == NULL)
return i;
}
for (i = CHRDEV_MAJOR_DYN_EXT_START;
- i > CHRDEV_MAJOR_DYN_EXT_END; i--) {
+ i >= CHRDEV_MAJOR_DYN_EXT_END; i--) {
for (cd = chrdevs[major_to_index(i)]; cd; cd = cd->next)
if (cd->major == i)
break;
- if (cd == NULL || cd->major != i)
+ if (cd == NULL)
return i;
}
}
if (major >= CHRDEV_MAJOR_MAX) {
- pr_err("CHRDEV \"%s\" major requested (%d) is greater than the maximum (%d)\n",
- name, major, CHRDEV_MAJOR_MAX);
+ pr_err("CHRDEV \"%s\" major requested (%u) is greater than the maximum (%u)\n",
+ name, major, CHRDEV_MAJOR_MAX-1);
ret = -EINVAL;
goto out;
}
* Following APIs get the extcon_dev from devicetree or by through extcon name.
*/
extern struct extcon_dev *extcon_get_extcon_dev(const char *extcon_name);
+extern struct extcon_dev *extcon_find_edev_by_node(struct device_node *node);
extern struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
int index);
return ERR_PTR(-ENODEV);
}
+static inline struct extcon_dev *extcon_find_edev_by_node(struct device_node *node)
+{
+ return ERR_PTR(-ENODEV);
+}
+
static inline struct extcon_dev *extcon_get_edev_by_phandle(struct device *dev,
int index)
{
+++ /dev/null
-/*
- * Single-state GPIO extcon driver based on extcon class
- *
- * Copyright (C) 2012 Samsung Electronics
- * Author: MyungJoo Ham <myungjoo.ham@samsung.com>
- *
- * based on switch class driver
- * Copyright (C) 2008 Google, Inc.
- * Author: Mike Lockwood <lockwood@android.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-#ifndef __EXTCON_GPIO_H__
-#define __EXTCON_GPIO_H__ __FILE__
-
-#include <linux/extcon.h>
-
-/**
- * struct gpio_extcon_pdata - A simple GPIO-controlled extcon device.
- * @extcon_id: The unique id of specific external connector.
- * @gpio: Corresponding GPIO.
- * @gpio_active_low: Boolean describing whether gpio active state is 1 or 0
- * If true, low state of gpio means active.
- * If false, high state of gpio means active.
- * @debounce: Debounce time for GPIO IRQ in ms.
- * @irq_flags: IRQ Flags (e.g., IRQF_TRIGGER_LOW).
- * @check_on_resume: Boolean describing whether to check the state of gpio
- * while resuming from sleep.
- */
-struct gpio_extcon_pdata {
- unsigned int extcon_id;
- unsigned gpio;
- bool gpio_active_low;
- unsigned long debounce;
- unsigned long irq_flags;
-
- bool check_on_resume;
-};
-
-#endif /* __EXTCON_GPIO_H__ */
/*
* NUMA distribution policy:
- * We support teo policies:
+ * We support two policies:
* 1) Balanced: Here all performance critical channels are
* distributed evenly amongst all the NUMA nodes.
* This policy will be the default policy.
typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
void *val, size_t bytes);
+/**
+ * struct nvmem_config - NVMEM device configuration
+ *
+ * @dev: Parent device.
+ * @name: Optional name.
+ * @id: Optional device ID used in full name. Ignored if name is NULL.
+ * @owner: Pointer to exporter module. Used for refcounting.
+ * @cells: Optional array of pre-defined NVMEM cells.
+ * @ncells: Number of elements in cells.
+ * @read_only: Device is read-only.
+ * @root_only: Device is accessibly to root only.
+ * @reg_read: Callback to read data.
+ * @reg_write: Callback to write data.
+ * @size: Device size.
+ * @word_size: Minimum read/write access granularity.
+ * @stride: Minimum read/write access stride.
+ * @priv: User context passed to read/write callbacks.
+ *
+ * Note: A default "nvmem<id>" name will be assigned to the device if
+ * no name is specified in its configuration. In such case "<id>" is
+ * generated with ida_simple_get() and provided id field is ignored.
+ *
+ * Note: Specifying name and setting id to -1 implies a unique device
+ * whose name is provided as-is (kept unaltered).
+ */
struct nvmem_config {
struct device *dev;
const char *name;
struct nvmem_device *nvmem_register(const struct nvmem_config *cfg);
int nvmem_unregister(struct nvmem_device *nvmem);
+struct nvmem_device *devm_nvmem_register(struct device *dev,
+ const struct nvmem_config *cfg);
+
+int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem);
+
#else
static inline struct nvmem_device *nvmem_register(const struct nvmem_config *c)
return -ENOSYS;
}
+static inline struct nvmem_device *
+devm_nvmem_register(struct device *dev, const struct nvmem_config *c)
+{
+ return nvmem_register(c);
+}
+
+static inline int
+devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
+{
+ return nvmem_unregister(nvmem);
+}
+
#endif /* CONFIG_NVMEM */
#endif /* ifndef _LINUX_NVMEM_PROVIDER_H */
#define PCI_DEVICE_ID_SERVERWORKS_CSB6LPC 0x0227
#define PCI_DEVICE_ID_SERVERWORKS_HT1100LD 0x0408
+#define PCI_VENDOR_ID_ALTERA 0x1172
+
#define PCI_VENDOR_ID_SBE 0x1176
#define PCI_DEVICE_ID_SBE_WANXL100 0x0301
#define PCI_DEVICE_ID_SBE_WANXL200 0x0302
+// SPDX-License-Identifier: GPL-2.0
/*
* System Trace Module (STM) infrastructure apis
* Copyright (C) 2014 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#ifndef _STM_H_
* @TB_SECURITY_USER: User approval required at minimum
* @TB_SECURITY_SECURE: One time saved key required at minimum
* @TB_SECURITY_DPONLY: Only tunnel Display port (and USB)
+ * @TB_SECURITY_USBONLY: Only tunnel USB controller of the connected
+ * Thunderbolt dock (and Display Port). All PCIe
+ * links downstream of the dock are removed.
*/
enum tb_security_level {
TB_SECURITY_NONE,
TB_SECURITY_USER,
TB_SECURITY_SECURE,
TB_SECURITY_DPONLY,
+ TB_SECURITY_USBONLY,
};
/**
* @cm_ops: Connection manager specific operations vector
* @index: Linux assigned domain number
* @security_level: Current security level
+ * @nboot_acl: Number of boot ACLs the domain supports
* @privdata: Private connection manager specific data
*/
struct tb {
const struct tb_cm_ops *cm_ops;
int index;
enum tb_security_level security_level;
+ size_t nboot_acl;
unsigned long privdata[0];
};
u16 receive_ring);
int tb_xdomain_disable_paths(struct tb_xdomain *xd);
struct tb_xdomain *tb_xdomain_find_by_uuid(struct tb *tb, const uuid_t *uuid);
+struct tb_xdomain *tb_xdomain_find_by_route(struct tb *tb, u64 route);
static inline struct tb_xdomain *
tb_xdomain_find_by_uuid_locked(struct tb *tb, const uuid_t *uuid)
return xd;
}
+static inline struct tb_xdomain *
+tb_xdomain_find_by_route_locked(struct tb *tb, u64 route)
+{
+ struct tb_xdomain *xd;
+
+ mutex_lock(&tb->lock);
+ xd = tb_xdomain_find_by_route(tb, route);
+ mutex_unlock(&tb->lock);
+
+ return xd;
+}
+
static inline struct tb_xdomain *tb_xdomain_get(struct tb_xdomain *xd)
{
if (xd)
* System Trace Module (STM) userspace interfaces
* Copyright (c) 2014, Intel Corporation.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
* STM class implements generic infrastructure for System Trace Module devices
* as defined in MIPI STPv2 specification.
*/
#include <linux/types.h>
+/* Maximum allowed master and channel values */
+#define STP_MASTER_MAX 0xffff
+#define STP_CHANNEL_MAX 0xffff
+
/**
* struct stp_policy_id - identification for the STP policy
* @size: size of the structure including real id[] length
#include <linux/gfp.h>
#include <linux/export.h>
+enum devm_ioremap_type {
+ DEVM_IOREMAP = 0,
+ DEVM_IOREMAP_NC,
+ DEVM_IOREMAP_WC,
+};
+
void devm_ioremap_release(struct device *dev, void *res)
{
iounmap(*(void __iomem **)res);
return *(void **)res == match_data;
}
-/**
- * devm_ioremap - Managed ioremap()
- * @dev: Generic device to remap IO address for
- * @offset: Resource address to map
- * @size: Size of map
- *
- * Managed ioremap(). Map is automatically unmapped on driver detach.
- */
-void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
- resource_size_t size)
+static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset,
+ resource_size_t size,
+ enum devm_ioremap_type type)
{
- void __iomem **ptr, *addr;
+ void __iomem **ptr, *addr = NULL;
ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
if (!ptr)
return NULL;
- addr = ioremap(offset, size);
+ switch (type) {
+ case DEVM_IOREMAP:
+ addr = ioremap(offset, size);
+ break;
+ case DEVM_IOREMAP_NC:
+ addr = ioremap_nocache(offset, size);
+ break;
+ case DEVM_IOREMAP_WC:
+ addr = ioremap_wc(offset, size);
+ break;
+ }
+
if (addr) {
*ptr = addr;
devres_add(dev, ptr);
return addr;
}
+
+/**
+ * devm_ioremap - Managed ioremap()
+ * @dev: Generic device to remap IO address for
+ * @offset: Resource address to map
+ * @size: Size of map
+ *
+ * Managed ioremap(). Map is automatically unmapped on driver detach.
+ */
+void __iomem *devm_ioremap(struct device *dev, resource_size_t offset,
+ resource_size_t size)
+{
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP);
+}
EXPORT_SYMBOL(devm_ioremap);
/**
void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
resource_size_t size)
{
- void __iomem **ptr, *addr;
-
- ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return NULL;
-
- addr = ioremap_nocache(offset, size);
- if (addr) {
- *ptr = addr;
- devres_add(dev, ptr);
- } else
- devres_free(ptr);
-
- return addr;
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_NC);
}
EXPORT_SYMBOL(devm_ioremap_nocache);
void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset,
resource_size_t size)
{
- void __iomem **ptr, *addr;
-
- ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
- if (!ptr)
- return NULL;
-
- addr = ioremap_wc(offset, size);
- if (addr) {
- *ptr = addr;
- devres_add(dev, ptr);
- } else
- devres_free(ptr);
-
- return addr;
+ return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC);
}
EXPORT_SYMBOL(devm_ioremap_wc);
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
+#include <string.h>
#include <errno.h>
#include <linux/hyperv.h>
+#include <linux/limits.h>
#include <syslog.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>
static int target_fd;
-static char target_fname[W_MAX_PATH];
+static char target_fname[PATH_MAX];
static unsigned long long filesize;
static int hv_start_fcopy(struct hv_start_fcopy *smsg)
return mac_addr;
}
-
-/*
- * Retrieve the interface name given tha MAC address.
- */
-
-static char *kvp_mac_to_if_name(char *mac)
-{
- DIR *dir;
- struct dirent *entry;
- FILE *file;
- char *p, *x;
- char *if_name = NULL;
- char buf[256];
- char dev_id[PATH_MAX];
- unsigned int i;
-
- dir = opendir(KVP_NET_DIR);
- if (dir == NULL)
- return NULL;
-
- while ((entry = readdir(dir)) != NULL) {
- /*
- * Set the state for the next pass.
- */
- snprintf(dev_id, sizeof(dev_id), "%s%s/address", KVP_NET_DIR,
- entry->d_name);
-
- file = fopen(dev_id, "r");
- if (file == NULL)
- continue;
-
- p = fgets(buf, sizeof(buf), file);
- if (p) {
- x = strchr(p, '\n');
- if (x)
- *x = '\0';
-
- for (i = 0; i < strlen(p); i++)
- p[i] = toupper(p[i]);
-
- if (!strcmp(p, mac)) {
- /*
- * Found the MAC match; return the interface
- * name. The caller will free the memory.
- */
- if_name = strdup(entry->d_name);
- fclose(file);
- break;
- }
- }
- fclose(file);
- }
-
- closedir(dir);
- return if_name;
-}
-
-
static void kvp_process_ipconfig_file(char *cmd,
char *config_buf, unsigned int len,
int element_size, int offset)
return error;
}
+/*
+ * Retrieve the IP given the MAC address.
+ */
+static int kvp_mac_to_ip(struct hv_kvp_ipaddr_value *kvp_ip_val)
+{
+ char *mac = (char *)kvp_ip_val->adapter_id;
+ DIR *dir;
+ struct dirent *entry;
+ FILE *file;
+ char *p, *x;
+ char *if_name = NULL;
+ char buf[256];
+ char dev_id[PATH_MAX];
+ unsigned int i;
+ int error = HV_E_FAIL;
+
+ dir = opendir(KVP_NET_DIR);
+ if (dir == NULL)
+ return HV_E_FAIL;
+
+ while ((entry = readdir(dir)) != NULL) {
+ /*
+ * Set the state for the next pass.
+ */
+ snprintf(dev_id, sizeof(dev_id), "%s%s/address", KVP_NET_DIR,
+ entry->d_name);
+
+ file = fopen(dev_id, "r");
+ if (file == NULL)
+ continue;
+
+ p = fgets(buf, sizeof(buf), file);
+ fclose(file);
+ if (!p)
+ continue;
+
+ x = strchr(p, '\n');
+ if (x)
+ *x = '\0';
+
+ for (i = 0; i < strlen(p); i++)
+ p[i] = toupper(p[i]);
+
+ if (strcmp(p, mac))
+ continue;
+
+ /*
+ * Found the MAC match.
+ * A NIC (e.g. VF) matching the MAC, but without IP, is skipped.
+ */
+ if_name = entry->d_name;
+ if (!if_name)
+ continue;
+
+ error = kvp_get_ip_info(0, if_name, KVP_OP_GET_IP_INFO,
+ kvp_ip_val, MAX_IP_ADDR_SIZE * 2);
+
+ if (!error && strlen((char *)kvp_ip_val->ip_addr))
+ break;
+ }
+
+ closedir(dir);
+ return error;
+}
static int expand_ipv6(char *addr, int type)
{
switch (op) {
case KVP_OP_GET_IP_INFO:
kvp_ip_val = &hv_msg->body.kvp_ip_val;
- if_name =
- kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
- if (if_name == NULL) {
- /*
- * We could not map the mac address to an
- * interface name; return error.
- */
- hv_msg->error = HV_E_FAIL;
- break;
- }
- error = kvp_get_ip_info(
- 0, if_name, KVP_OP_GET_IP_INFO,
- kvp_ip_val,
- (MAX_IP_ADDR_SIZE * 2));
+ error = kvp_mac_to_ip(kvp_ip_val);
if (error)
hv_msg->error = error;
- free(if_name);
break;
case KVP_OP_SET_IP_INFO:
#include <sys/poll.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
+#include <sys/sysmacros.h>
#include <fcntl.h>
#include <stdio.h>
#include <mntent.h>
projects / linux.git / commitdiff