1 // SPDX-License-Identifier: GPL-2.0
3 * Intel(R) Trace Hub pci driver
5 * Copyright (C) 2014-2015 Intel Corporation.
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10 #include <linux/types.h>
11 #include <linux/module.h>
12 #include <linux/device.h>
13 #include <linux/sysfs.h>
14 #include <linux/pci.h>
18 #define DRIVER_NAME "intel_th_pci"
21 TH_PCI_CONFIG_BAR = 0,
22 TH_PCI_STH_SW_BAR = 2,
26 #define BAR_MASK (BIT(TH_PCI_CONFIG_BAR) | BIT(TH_PCI_STH_SW_BAR))
28 #define PCI_REG_NPKDSC 0x80
29 #define NPKDSC_TSACT BIT(5)
31 static int intel_th_pci_activate(struct intel_th *th)
33 struct pci_dev *pdev = to_pci_dev(th->dev);
37 if (!INTEL_TH_CAP(th, tscu_enable))
40 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
42 npkdsc |= NPKDSC_TSACT;
43 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
47 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
52 static void intel_th_pci_deactivate(struct intel_th *th)
54 struct pci_dev *pdev = to_pci_dev(th->dev);
58 if (!INTEL_TH_CAP(th, tscu_enable))
61 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
63 npkdsc |= NPKDSC_TSACT;
64 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
68 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
71 static int intel_th_pci_probe(struct pci_dev *pdev,
72 const struct pci_device_id *id)
74 struct intel_th_drvdata *drvdata = (void *)id->driver_data;
75 struct resource resource[TH_MMIO_END + TH_NVEC_MAX] = {
76 [TH_MMIO_CONFIG] = pdev->resource[TH_PCI_CONFIG_BAR],
77 [TH_MMIO_SW] = pdev->resource[TH_PCI_STH_SW_BAR],
79 int err, r = TH_MMIO_SW + 1, i;
82 err = pcim_enable_device(pdev);
86 err = pcim_iomap_regions_request_all(pdev, BAR_MASK, DRIVER_NAME);
90 if (pdev->resource[TH_PCI_RTIT_BAR].start) {
91 resource[TH_MMIO_RTIT] = pdev->resource[TH_PCI_RTIT_BAR];
95 err = pci_alloc_irq_vectors(pdev, 1, 8, PCI_IRQ_ALL_TYPES);
97 for (i = 0; i < err; i++, r++) {
98 resource[r].flags = IORESOURCE_IRQ;
99 resource[r].start = pci_irq_vector(pdev, i);
102 th = intel_th_alloc(&pdev->dev, drvdata, resource, r);
106 th->activate = intel_th_pci_activate;
107 th->deactivate = intel_th_pci_deactivate;
109 pci_set_master(pdev);
114 static void intel_th_pci_remove(struct pci_dev *pdev)
116 struct intel_th *th = pci_get_drvdata(pdev);
120 pci_free_irq_vectors(pdev);
123 static const struct intel_th_drvdata intel_th_2x = {
128 static const struct pci_device_id intel_th_pci_id_table[] = {
130 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
131 .driver_data = (kernel_ulong_t)0,
134 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
135 .driver_data = (kernel_ulong_t)0,
139 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a8e),
140 .driver_data = (kernel_ulong_t)0,
144 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0a80),
145 .driver_data = (kernel_ulong_t)0,
149 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1a8e),
150 .driver_data = (kernel_ulong_t)0,
153 /* Kaby Lake PCH-H */
154 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
155 .driver_data = (kernel_ulong_t)0,
159 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x19e1),
160 .driver_data = (kernel_ulong_t)0,
164 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa1a6),
165 .driver_data = (kernel_ulong_t)0,
169 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa226),
170 .driver_data = (kernel_ulong_t)0,
174 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
175 .driver_data = (kernel_ulong_t)&intel_th_2x,
179 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa326),
180 .driver_data = (kernel_ulong_t)&intel_th_2x,
184 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9da6),
185 .driver_data = (kernel_ulong_t)&intel_th_2x,
189 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x18e1),
190 .driver_data = (kernel_ulong_t)&intel_th_2x,
194 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x34a6),
195 .driver_data = (kernel_ulong_t)&intel_th_2x,
199 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x02a6),
200 .driver_data = (kernel_ulong_t)&intel_th_2x,
204 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x06a6),
205 .driver_data = (kernel_ulong_t)&intel_th_2x,
208 /* Comet Lake PCH-V */
209 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa3a6),
210 .driver_data = (kernel_ulong_t)&intel_th_2x,
214 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x45c5),
215 .driver_data = (kernel_ulong_t)&intel_th_2x,
219 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8a29),
220 .driver_data = (kernel_ulong_t)&intel_th_2x,
224 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9a33),
225 .driver_data = (kernel_ulong_t)&intel_th_2x,
229 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa0a6),
230 .driver_data = (kernel_ulong_t)&intel_th_2x,
233 /* Jasper Lake PCH */
234 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4da6),
235 .driver_data = (kernel_ulong_t)&intel_th_2x,
239 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4b26),
240 .driver_data = (kernel_ulong_t)&intel_th_2x,
245 MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
247 static struct pci_driver intel_th_pci_driver = {
249 .id_table = intel_th_pci_id_table,
250 .probe = intel_th_pci_probe,
251 .remove = intel_th_pci_remove,
254 module_pci_driver(intel_th_pci_driver);
256 MODULE_LICENSE("GPL v2");
257 MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
258 MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");