1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Microsemi Switchtec PCIe Driver
4 * Copyright (c) 2017, Microsemi Corporation
10 #include <linux/pci.h>
11 #include <linux/cdev.h>
13 #define SWITCHTEC_MRPC_PAYLOAD_SIZE 1024
14 #define SWITCHTEC_MAX_PFF_CSR 255
16 #define SWITCHTEC_EVENT_OCCURRED BIT(0)
17 #define SWITCHTEC_EVENT_CLEAR BIT(0)
18 #define SWITCHTEC_EVENT_EN_LOG BIT(1)
19 #define SWITCHTEC_EVENT_EN_CLI BIT(2)
20 #define SWITCHTEC_EVENT_EN_IRQ BIT(3)
21 #define SWITCHTEC_EVENT_FATAL BIT(4)
23 #define SWITCHTEC_DMA_MRPC_EN BIT(0)
25 SWITCHTEC_GAS_MRPC_OFFSET = 0x0000,
26 SWITCHTEC_GAS_TOP_CFG_OFFSET = 0x1000,
27 SWITCHTEC_GAS_SW_EVENT_OFFSET = 0x1800,
28 SWITCHTEC_GAS_SYS_INFO_OFFSET = 0x2000,
29 SWITCHTEC_GAS_FLASH_INFO_OFFSET = 0x2200,
30 SWITCHTEC_GAS_PART_CFG_OFFSET = 0x4000,
31 SWITCHTEC_GAS_NTB_OFFSET = 0x10000,
32 SWITCHTEC_GAS_PFF_CSR_OFFSET = 0x134000,
40 u8 input_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
41 u8 output_data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
52 SWITCHTEC_MRPC_STATUS_INPROGRESS = 1,
53 SWITCHTEC_MRPC_STATUS_DONE = 2,
54 SWITCHTEC_MRPC_STATUS_ERROR = 0xFF,
55 SWITCHTEC_MRPC_STATUS_INTERRUPTED = 0x100,
58 struct sw_event_regs {
59 u64 event_report_ctrl;
61 u64 part_event_bitmap;
65 u32 stack_error_event_hdr;
66 u32 stack_error_event_data;
68 u32 ppu_error_event_hdr;
69 u32 ppu_error_event_data;
71 u32 isp_error_event_hdr;
72 u32 isp_error_event_data;
74 u32 sys_reset_event_hdr;
84 u32 twi_mrpc_comp_hdr;
85 u32 twi_mrpc_comp_data;
87 u32 twi_mrpc_comp_async_hdr;
88 u32 twi_mrpc_comp_async_data;
90 u32 cli_mrpc_comp_hdr;
91 u32 cli_mrpc_comp_data;
93 u32 cli_mrpc_comp_async_hdr;
94 u32 cli_mrpc_comp_async_data;
96 u32 gpio_interrupt_hdr;
97 u32 gpio_interrupt_data;
105 SWITCHTEC_GEN3_CFG0_RUNNING = 0x04,
106 SWITCHTEC_GEN3_CFG1_RUNNING = 0x05,
107 SWITCHTEC_GEN3_IMG0_RUNNING = 0x03,
108 SWITCHTEC_GEN3_IMG1_RUNNING = 0x07,
111 struct sys_info_regs_gen3 {
113 u32 vendor_table_revision;
114 u32 table_format_version;
116 u32 cfg_file_fmt_version;
122 char product_revision[4];
123 char component_vendor[8];
125 u8 component_revision;
128 struct sys_info_regs {
131 u32 firmware_version;
133 struct sys_info_regs_gen3 gen3;
137 struct partition_info {
142 struct flash_info_regs_gen3 {
143 u32 flash_part_map_upd_idx;
145 struct active_partition_info_gen3 {
151 struct active_partition_info_gen3 active_cfg;
152 struct active_partition_info_gen3 inactive_img;
153 struct active_partition_info_gen3 inactive_cfg;
157 struct partition_info cfg0;
158 struct partition_info cfg1;
159 struct partition_info img0;
160 struct partition_info img1;
161 struct partition_info nvlog;
162 struct partition_info vendor[8];
165 struct flash_info_regs {
167 struct flash_info_regs_gen3 gen3;
172 SWITCHTEC_NTB_REG_INFO_OFFSET = 0x0000,
173 SWITCHTEC_NTB_REG_CTRL_OFFSET = 0x4000,
174 SWITCHTEC_NTB_REG_DBMSG_OFFSET = 0x64000,
177 struct ntb_info_regs {
185 struct nt_partition_info {
188 u32 target_part_high;
193 struct part_cfg_regs {
200 u32 dsp_pff_inst_id[47];
202 u16 vep_vector_number;
203 u16 usp_vector_number;
204 u32 port_event_bitmap;
206 u32 part_event_summary;
209 u32 part_reset_data[5];
211 u32 mrpc_comp_data[5];
212 u32 mrpc_comp_async_hdr;
213 u32 mrpc_comp_async_data[5];
215 u32 dyn_binding_data[5];
216 u32 intercomm_notify_hdr;
217 u32 intercomm_notify_data[5];
222 NTB_CTRL_PART_OP_LOCK = 0x1,
223 NTB_CTRL_PART_OP_CFG = 0x2,
224 NTB_CTRL_PART_OP_RESET = 0x3,
226 NTB_CTRL_PART_STATUS_NORMAL = 0x1,
227 NTB_CTRL_PART_STATUS_LOCKED = 0x2,
228 NTB_CTRL_PART_STATUS_LOCKING = 0x3,
229 NTB_CTRL_PART_STATUS_CONFIGURING = 0x4,
230 NTB_CTRL_PART_STATUS_RESETTING = 0x5,
232 NTB_CTRL_BAR_VALID = 1 << 0,
233 NTB_CTRL_BAR_DIR_WIN_EN = 1 << 4,
234 NTB_CTRL_BAR_LUT_WIN_EN = 1 << 5,
236 NTB_CTRL_REQ_ID_EN = 1 << 0,
238 NTB_CTRL_LUT_EN = 1 << 0,
240 NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
243 struct ntb_ctrl_regs {
244 u32 partition_status;
249 u16 lut_table_entries;
250 u16 lut_table_offset;
252 u16 req_id_table_size;
253 u16 req_id_table_offset;
266 u32 req_id_table[512];
271 #define NTB_DBMSG_IMSG_STATUS BIT_ULL(32)
272 #define NTB_DBMSG_IMSG_MASK BIT_ULL(40)
274 struct ntb_dbmsg_regs {
304 SWITCHTEC_PART_CFG_EVENT_RESET = 1 << 0,
305 SWITCHTEC_PART_CFG_EVENT_MRPC_CMP = 1 << 1,
306 SWITCHTEC_PART_CFG_EVENT_MRPC_ASYNC_CMP = 1 << 2,
307 SWITCHTEC_PART_CFG_EVENT_DYN_PART_CMP = 1 << 3,
310 struct pff_csr_regs {
322 u32 pci_subsystem_id;
323 u32 pci_expansion_rom;
327 u32 pci_cap_region[48];
328 u32 pcie_cap_region[448];
329 u32 indirect_gas_window[128];
330 u32 indirect_gas_window_off;
332 u32 pff_event_summary;
335 u32 aer_in_p2p_data[5];
337 u32 aer_in_vep_data[5];
349 u32 threshold_data[5];
351 u32 power_mgmt_data[5];
352 u32 tlp_throttling_hdr;
353 u32 tlp_throttling_data[5];
355 u32 force_speed_data[5];
356 u32 credit_timeout_hdr;
357 u32 credit_timeout_data[5];
359 u32 link_state_data[5];
363 struct switchtec_ntb;
365 struct dma_mrpc_output {
370 u8 data[SWITCHTEC_MRPC_PAYLOAD_SIZE];
373 struct switchtec_dev {
374 struct pci_dev *pdev;
378 enum switchtec_gen gen;
383 char pff_local[SWITCHTEC_MAX_PFF_CSR];
386 struct mrpc_regs __iomem *mmio_mrpc;
387 struct sw_event_regs __iomem *mmio_sw_event;
388 struct sys_info_regs __iomem *mmio_sys_info;
389 struct flash_info_regs __iomem *mmio_flash_info;
390 struct ntb_info_regs __iomem *mmio_ntb;
391 struct part_cfg_regs __iomem *mmio_part_cfg;
392 struct part_cfg_regs __iomem *mmio_part_cfg_all;
393 struct pff_csr_regs __iomem *mmio_pff_csr;
396 * The mrpc mutex must be held when accessing the other
397 * mrpc_ fields, alive flag and stuser->state field
399 struct mutex mrpc_mutex;
400 struct list_head mrpc_queue;
402 struct work_struct mrpc_work;
403 struct delayed_work mrpc_timeout;
406 wait_queue_head_t event_wq;
409 struct work_struct link_event_work;
410 void (*link_notifier)(struct switchtec_dev *stdev);
411 u8 link_event_count[SWITCHTEC_MAX_PFF_CSR];
413 struct switchtec_ntb *sndev;
415 struct dma_mrpc_output *dma_mrpc;
416 dma_addr_t dma_mrpc_dma_addr;
419 static inline struct switchtec_dev *to_stdev(struct device *dev)
421 return container_of(dev, struct switchtec_dev, dev);
424 extern struct class *switchtec_class;