1 // SPDX-License-Identifier: GPL-2.0-only
3 * Host side test driver to test endpoint functionality
5 * Copyright (C) 2017 Texas Instruments
6 * Author: Kishon Vijay Abraham I <kishon@ti.com>
9 #include <linux/crc32.h>
10 #include <linux/delay.h>
13 #include <linux/interrupt.h>
14 #include <linux/irq.h>
15 #include <linux/miscdevice.h>
16 #include <linux/module.h>
17 #include <linux/mutex.h>
18 #include <linux/random.h>
19 #include <linux/slab.h>
20 #include <linux/uaccess.h>
21 #include <linux/pci.h>
22 #include <linux/pci_ids.h>
24 #include <linux/pci_regs.h>
26 #include <uapi/linux/pcitest.h>
28 #define DRV_MODULE_NAME "pci-endpoint-test"
30 #define IRQ_TYPE_UNDEFINED -1
31 #define IRQ_TYPE_LEGACY 0
32 #define IRQ_TYPE_MSI 1
33 #define IRQ_TYPE_MSIX 2
35 #define PCI_ENDPOINT_TEST_MAGIC 0x0
37 #define PCI_ENDPOINT_TEST_COMMAND 0x4
38 #define COMMAND_RAISE_LEGACY_IRQ BIT(0)
39 #define COMMAND_RAISE_MSI_IRQ BIT(1)
40 #define COMMAND_RAISE_MSIX_IRQ BIT(2)
41 #define COMMAND_READ BIT(3)
42 #define COMMAND_WRITE BIT(4)
43 #define COMMAND_COPY BIT(5)
45 #define PCI_ENDPOINT_TEST_STATUS 0x8
46 #define STATUS_READ_SUCCESS BIT(0)
47 #define STATUS_READ_FAIL BIT(1)
48 #define STATUS_WRITE_SUCCESS BIT(2)
49 #define STATUS_WRITE_FAIL BIT(3)
50 #define STATUS_COPY_SUCCESS BIT(4)
51 #define STATUS_COPY_FAIL BIT(5)
52 #define STATUS_IRQ_RAISED BIT(6)
53 #define STATUS_SRC_ADDR_INVALID BIT(7)
54 #define STATUS_DST_ADDR_INVALID BIT(8)
56 #define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0x0c
57 #define PCI_ENDPOINT_TEST_UPPER_SRC_ADDR 0x10
59 #define PCI_ENDPOINT_TEST_LOWER_DST_ADDR 0x14
60 #define PCI_ENDPOINT_TEST_UPPER_DST_ADDR 0x18
62 #define PCI_ENDPOINT_TEST_SIZE 0x1c
63 #define PCI_ENDPOINT_TEST_CHECKSUM 0x20
65 #define PCI_ENDPOINT_TEST_IRQ_TYPE 0x24
66 #define PCI_ENDPOINT_TEST_IRQ_NUMBER 0x28
68 #define PCI_ENDPOINT_TEST_FLAGS 0x2c
69 #define FLAG_USE_DMA BIT(0)
71 #define PCI_DEVICE_ID_TI_J721E 0xb00d
72 #define PCI_DEVICE_ID_TI_AM654 0xb00c
74 #define is_am654_pci_dev(pdev) \
75 ((pdev)->device == PCI_DEVICE_ID_TI_AM654)
77 #define PCI_DEVICE_ID_RENESAS_R8A774C0 0x002d
79 static DEFINE_IDA(pci_endpoint_test_ida);
81 #define to_endpoint_test(priv) container_of((priv), struct pci_endpoint_test, \
85 module_param(no_msi, bool, 0444);
86 MODULE_PARM_DESC(no_msi, "Disable MSI interrupt in pci_endpoint_test");
88 static int irq_type = IRQ_TYPE_MSI;
89 module_param(irq_type, int, 0444);
90 MODULE_PARM_DESC(irq_type, "IRQ mode selection in pci_endpoint_test (0 - Legacy, 1 - MSI, 2 - MSI-X)");
101 struct pci_endpoint_test {
102 struct pci_dev *pdev;
104 void __iomem *bar[PCI_STD_NUM_BARS];
105 struct completion irq_raised;
109 /* mutex to protect the ioctls */
111 struct miscdevice miscdev;
112 enum pci_barno test_reg_bar;
117 struct pci_endpoint_test_data {
118 enum pci_barno test_reg_bar;
123 static inline u32 pci_endpoint_test_readl(struct pci_endpoint_test *test,
126 return readl(test->base + offset);
129 static inline void pci_endpoint_test_writel(struct pci_endpoint_test *test,
130 u32 offset, u32 value)
132 writel(value, test->base + offset);
135 static inline u32 pci_endpoint_test_bar_readl(struct pci_endpoint_test *test,
138 return readl(test->bar[bar] + offset);
141 static inline void pci_endpoint_test_bar_writel(struct pci_endpoint_test *test,
142 int bar, u32 offset, u32 value)
144 writel(value, test->bar[bar] + offset);
147 static irqreturn_t pci_endpoint_test_irqhandler(int irq, void *dev_id)
149 struct pci_endpoint_test *test = dev_id;
152 reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);
153 if (reg & STATUS_IRQ_RAISED) {
154 test->last_irq = irq;
155 complete(&test->irq_raised);
156 reg &= ~STATUS_IRQ_RAISED;
158 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_STATUS,
164 static void pci_endpoint_test_free_irq_vectors(struct pci_endpoint_test *test)
166 struct pci_dev *pdev = test->pdev;
168 pci_free_irq_vectors(pdev);
169 test->irq_type = IRQ_TYPE_UNDEFINED;
172 static bool pci_endpoint_test_alloc_irq_vectors(struct pci_endpoint_test *test,
176 struct pci_dev *pdev = test->pdev;
177 struct device *dev = &pdev->dev;
181 case IRQ_TYPE_LEGACY:
182 irq = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY);
184 dev_err(dev, "Failed to get Legacy interrupt\n");
187 irq = pci_alloc_irq_vectors(pdev, 1, 32, PCI_IRQ_MSI);
189 dev_err(dev, "Failed to get MSI interrupts\n");
192 irq = pci_alloc_irq_vectors(pdev, 1, 2048, PCI_IRQ_MSIX);
194 dev_err(dev, "Failed to get MSI-X interrupts\n");
197 dev_err(dev, "Invalid IRQ type selected\n");
205 test->irq_type = type;
206 test->num_irqs = irq;
211 static void pci_endpoint_test_release_irq(struct pci_endpoint_test *test)
214 struct pci_dev *pdev = test->pdev;
215 struct device *dev = &pdev->dev;
217 for (i = 0; i < test->num_irqs; i++)
218 devm_free_irq(dev, pci_irq_vector(pdev, i), test);
223 static bool pci_endpoint_test_request_irq(struct pci_endpoint_test *test)
227 struct pci_dev *pdev = test->pdev;
228 struct device *dev = &pdev->dev;
230 for (i = 0; i < test->num_irqs; i++) {
231 err = devm_request_irq(dev, pci_irq_vector(pdev, i),
232 pci_endpoint_test_irqhandler,
233 IRQF_SHARED, test->name, test);
242 case IRQ_TYPE_LEGACY:
243 dev_err(dev, "Failed to request IRQ %d for Legacy\n",
244 pci_irq_vector(pdev, i));
247 dev_err(dev, "Failed to request IRQ %d for MSI %d\n",
248 pci_irq_vector(pdev, i),
252 dev_err(dev, "Failed to request IRQ %d for MSI-X %d\n",
253 pci_irq_vector(pdev, i),
261 static bool pci_endpoint_test_bar(struct pci_endpoint_test *test,
262 enum pci_barno barno)
267 struct pci_dev *pdev = test->pdev;
269 if (!test->bar[barno])
272 size = pci_resource_len(pdev, barno);
274 if (barno == test->test_reg_bar)
277 for (j = 0; j < size; j += 4)
278 pci_endpoint_test_bar_writel(test, barno, j, 0xA0A0A0A0);
280 for (j = 0; j < size; j += 4) {
281 val = pci_endpoint_test_bar_readl(test, barno, j);
282 if (val != 0xA0A0A0A0)
289 static bool pci_endpoint_test_legacy_irq(struct pci_endpoint_test *test)
293 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,
295 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 0);
296 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
297 COMMAND_RAISE_LEGACY_IRQ);
298 val = wait_for_completion_timeout(&test->irq_raised,
299 msecs_to_jiffies(1000));
306 static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test,
307 u16 msi_num, bool msix)
310 struct pci_dev *pdev = test->pdev;
312 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,
313 msix == false ? IRQ_TYPE_MSI :
315 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, msi_num);
316 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
317 msix == false ? COMMAND_RAISE_MSI_IRQ :
318 COMMAND_RAISE_MSIX_IRQ);
319 val = wait_for_completion_timeout(&test->irq_raised,
320 msecs_to_jiffies(1000));
324 if (pci_irq_vector(pdev, msi_num - 1) == test->last_irq)
330 static bool pci_endpoint_test_copy(struct pci_endpoint_test *test,
333 struct pci_endpoint_test_xfer_param param;
340 dma_addr_t src_phys_addr;
341 dma_addr_t dst_phys_addr;
342 struct pci_dev *pdev = test->pdev;
343 struct device *dev = &pdev->dev;
345 dma_addr_t orig_src_phys_addr;
347 dma_addr_t orig_dst_phys_addr;
349 size_t alignment = test->alignment;
350 int irq_type = test->irq_type;
355 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
357 dev_err(dev, "Failed to get transfer param\n");
362 if (size > SIZE_MAX - alignment)
365 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
367 flags |= FLAG_USE_DMA;
369 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
370 dev_err(dev, "Invalid IRQ type option\n");
374 orig_src_addr = kzalloc(size + alignment, GFP_KERNEL);
375 if (!orig_src_addr) {
376 dev_err(dev, "Failed to allocate source buffer\n");
381 get_random_bytes(orig_src_addr, size + alignment);
382 orig_src_phys_addr = dma_map_single(dev, orig_src_addr,
383 size + alignment, DMA_TO_DEVICE);
384 if (dma_mapping_error(dev, orig_src_phys_addr)) {
385 dev_err(dev, "failed to map source buffer address\n");
387 goto err_src_phys_addr;
390 if (alignment && !IS_ALIGNED(orig_src_phys_addr, alignment)) {
391 src_phys_addr = PTR_ALIGN(orig_src_phys_addr, alignment);
392 offset = src_phys_addr - orig_src_phys_addr;
393 src_addr = orig_src_addr + offset;
395 src_phys_addr = orig_src_phys_addr;
396 src_addr = orig_src_addr;
399 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,
400 lower_32_bits(src_phys_addr));
402 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,
403 upper_32_bits(src_phys_addr));
405 src_crc32 = crc32_le(~0, src_addr, size);
407 orig_dst_addr = kzalloc(size + alignment, GFP_KERNEL);
408 if (!orig_dst_addr) {
409 dev_err(dev, "Failed to allocate destination address\n");
414 orig_dst_phys_addr = dma_map_single(dev, orig_dst_addr,
415 size + alignment, DMA_FROM_DEVICE);
416 if (dma_mapping_error(dev, orig_dst_phys_addr)) {
417 dev_err(dev, "failed to map destination buffer address\n");
419 goto err_dst_phys_addr;
422 if (alignment && !IS_ALIGNED(orig_dst_phys_addr, alignment)) {
423 dst_phys_addr = PTR_ALIGN(orig_dst_phys_addr, alignment);
424 offset = dst_phys_addr - orig_dst_phys_addr;
425 dst_addr = orig_dst_addr + offset;
427 dst_phys_addr = orig_dst_phys_addr;
428 dst_addr = orig_dst_addr;
431 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,
432 lower_32_bits(dst_phys_addr));
433 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,
434 upper_32_bits(dst_phys_addr));
436 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE,
439 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
440 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
441 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
442 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
445 wait_for_completion(&test->irq_raised);
447 dma_unmap_single(dev, orig_dst_phys_addr, size + alignment,
450 dst_crc32 = crc32_le(~0, dst_addr, size);
451 if (dst_crc32 == src_crc32)
455 kfree(orig_dst_addr);
458 dma_unmap_single(dev, orig_src_phys_addr, size + alignment,
462 kfree(orig_src_addr);
468 static bool pci_endpoint_test_write(struct pci_endpoint_test *test,
471 struct pci_endpoint_test_xfer_param param;
477 dma_addr_t phys_addr;
478 struct pci_dev *pdev = test->pdev;
479 struct device *dev = &pdev->dev;
481 dma_addr_t orig_phys_addr;
483 size_t alignment = test->alignment;
484 int irq_type = test->irq_type;
489 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
491 dev_err(dev, "Failed to get transfer param\n");
496 if (size > SIZE_MAX - alignment)
499 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
501 flags |= FLAG_USE_DMA;
503 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
504 dev_err(dev, "Invalid IRQ type option\n");
508 orig_addr = kzalloc(size + alignment, GFP_KERNEL);
510 dev_err(dev, "Failed to allocate address\n");
515 get_random_bytes(orig_addr, size + alignment);
517 orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
519 if (dma_mapping_error(dev, orig_phys_addr)) {
520 dev_err(dev, "failed to map source buffer address\n");
525 if (alignment && !IS_ALIGNED(orig_phys_addr, alignment)) {
526 phys_addr = PTR_ALIGN(orig_phys_addr, alignment);
527 offset = phys_addr - orig_phys_addr;
528 addr = orig_addr + offset;
530 phys_addr = orig_phys_addr;
534 crc32 = crc32_le(~0, addr, size);
535 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_CHECKSUM,
538 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,
539 lower_32_bits(phys_addr));
540 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,
541 upper_32_bits(phys_addr));
543 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);
545 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
546 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
547 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
548 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
551 wait_for_completion(&test->irq_raised);
553 reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);
554 if (reg & STATUS_READ_SUCCESS)
557 dma_unmap_single(dev, orig_phys_addr, size + alignment,
567 static bool pci_endpoint_test_read(struct pci_endpoint_test *test,
570 struct pci_endpoint_test_xfer_param param;
576 dma_addr_t phys_addr;
577 struct pci_dev *pdev = test->pdev;
578 struct device *dev = &pdev->dev;
580 dma_addr_t orig_phys_addr;
582 size_t alignment = test->alignment;
583 int irq_type = test->irq_type;
587 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
589 dev_err(dev, "Failed to get transfer param\n");
594 if (size > SIZE_MAX - alignment)
597 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
599 flags |= FLAG_USE_DMA;
601 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
602 dev_err(dev, "Invalid IRQ type option\n");
606 orig_addr = kzalloc(size + alignment, GFP_KERNEL);
608 dev_err(dev, "Failed to allocate destination address\n");
613 orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
615 if (dma_mapping_error(dev, orig_phys_addr)) {
616 dev_err(dev, "failed to map source buffer address\n");
621 if (alignment && !IS_ALIGNED(orig_phys_addr, alignment)) {
622 phys_addr = PTR_ALIGN(orig_phys_addr, alignment);
623 offset = phys_addr - orig_phys_addr;
624 addr = orig_addr + offset;
626 phys_addr = orig_phys_addr;
630 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,
631 lower_32_bits(phys_addr));
632 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,
633 upper_32_bits(phys_addr));
635 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);
637 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
638 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
639 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
640 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
643 wait_for_completion(&test->irq_raised);
645 dma_unmap_single(dev, orig_phys_addr, size + alignment,
648 crc32 = crc32_le(~0, addr, size);
649 if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))
658 static bool pci_endpoint_test_clear_irq(struct pci_endpoint_test *test)
660 pci_endpoint_test_release_irq(test);
661 pci_endpoint_test_free_irq_vectors(test);
665 static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,
668 struct pci_dev *pdev = test->pdev;
669 struct device *dev = &pdev->dev;
671 if (req_irq_type < IRQ_TYPE_LEGACY || req_irq_type > IRQ_TYPE_MSIX) {
672 dev_err(dev, "Invalid IRQ type option\n");
676 if (test->irq_type == req_irq_type)
679 pci_endpoint_test_release_irq(test);
680 pci_endpoint_test_free_irq_vectors(test);
682 if (!pci_endpoint_test_alloc_irq_vectors(test, req_irq_type))
685 if (!pci_endpoint_test_request_irq(test))
691 pci_endpoint_test_free_irq_vectors(test);
695 static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd,
700 struct pci_endpoint_test *test = to_endpoint_test(file->private_data);
701 struct pci_dev *pdev = test->pdev;
703 mutex_lock(&test->mutex);
707 if (bar < 0 || bar > 5)
709 if (is_am654_pci_dev(pdev) && bar == BAR_0)
711 ret = pci_endpoint_test_bar(test, bar);
713 case PCITEST_LEGACY_IRQ:
714 ret = pci_endpoint_test_legacy_irq(test);
718 ret = pci_endpoint_test_msi_irq(test, arg, cmd == PCITEST_MSIX);
721 ret = pci_endpoint_test_write(test, arg);
724 ret = pci_endpoint_test_read(test, arg);
727 ret = pci_endpoint_test_copy(test, arg);
729 case PCITEST_SET_IRQTYPE:
730 ret = pci_endpoint_test_set_irq(test, arg);
732 case PCITEST_GET_IRQTYPE:
735 case PCITEST_CLEAR_IRQ:
736 ret = pci_endpoint_test_clear_irq(test);
741 mutex_unlock(&test->mutex);
745 static const struct file_operations pci_endpoint_test_fops = {
746 .owner = THIS_MODULE,
747 .unlocked_ioctl = pci_endpoint_test_ioctl,
750 static int pci_endpoint_test_probe(struct pci_dev *pdev,
751 const struct pci_device_id *ent)
758 struct device *dev = &pdev->dev;
759 struct pci_endpoint_test *test;
760 struct pci_endpoint_test_data *data;
761 enum pci_barno test_reg_bar = BAR_0;
762 struct miscdevice *misc_device;
764 if (pci_is_bridge(pdev))
767 test = devm_kzalloc(dev, sizeof(*test), GFP_KERNEL);
771 test->test_reg_bar = 0;
774 test->irq_type = IRQ_TYPE_UNDEFINED;
777 irq_type = IRQ_TYPE_LEGACY;
779 data = (struct pci_endpoint_test_data *)ent->driver_data;
781 test_reg_bar = data->test_reg_bar;
782 test->test_reg_bar = test_reg_bar;
783 test->alignment = data->alignment;
784 irq_type = data->irq_type;
787 init_completion(&test->irq_raised);
788 mutex_init(&test->mutex);
790 if ((dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)) != 0) &&
791 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0) {
792 dev_err(dev, "Cannot set DMA mask\n");
796 err = pci_enable_device(pdev);
798 dev_err(dev, "Cannot enable PCI device\n");
802 err = pci_request_regions(pdev, DRV_MODULE_NAME);
804 dev_err(dev, "Cannot obtain PCI resources\n");
805 goto err_disable_pdev;
808 pci_set_master(pdev);
810 if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type))
811 goto err_disable_irq;
813 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
814 if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
815 base = pci_ioremap_bar(pdev, bar);
817 dev_err(dev, "Failed to read BAR%d\n", bar);
818 WARN_ON(bar == test_reg_bar);
820 test->bar[bar] = base;
824 test->base = test->bar[test_reg_bar];
827 dev_err(dev, "Cannot perform PCI test without BAR%d\n",
832 pci_set_drvdata(pdev, test);
834 id = ida_simple_get(&pci_endpoint_test_ida, 0, 0, GFP_KERNEL);
837 dev_err(dev, "Unable to get id\n");
841 snprintf(name, sizeof(name), DRV_MODULE_NAME ".%d", id);
842 test->name = kstrdup(name, GFP_KERNEL);
848 if (!pci_endpoint_test_request_irq(test))
849 goto err_kfree_test_name;
851 misc_device = &test->miscdev;
852 misc_device->minor = MISC_DYNAMIC_MINOR;
853 misc_device->name = kstrdup(name, GFP_KERNEL);
854 if (!misc_device->name) {
856 goto err_release_irq;
858 misc_device->fops = &pci_endpoint_test_fops,
860 err = misc_register(misc_device);
862 dev_err(dev, "Failed to register device\n");
869 kfree(misc_device->name);
872 pci_endpoint_test_release_irq(test);
878 ida_simple_remove(&pci_endpoint_test_ida, id);
881 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
883 pci_iounmap(pdev, test->bar[bar]);
887 pci_endpoint_test_free_irq_vectors(test);
888 pci_release_regions(pdev);
891 pci_disable_device(pdev);
896 static void pci_endpoint_test_remove(struct pci_dev *pdev)
900 struct pci_endpoint_test *test = pci_get_drvdata(pdev);
901 struct miscdevice *misc_device = &test->miscdev;
903 if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1)
908 misc_deregister(&test->miscdev);
909 kfree(misc_device->name);
911 ida_simple_remove(&pci_endpoint_test_ida, id);
912 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
914 pci_iounmap(pdev, test->bar[bar]);
917 pci_endpoint_test_release_irq(test);
918 pci_endpoint_test_free_irq_vectors(test);
920 pci_release_regions(pdev);
921 pci_disable_device(pdev);
924 static const struct pci_endpoint_test_data default_data = {
925 .test_reg_bar = BAR_0,
927 .irq_type = IRQ_TYPE_MSI,
930 static const struct pci_endpoint_test_data am654_data = {
931 .test_reg_bar = BAR_2,
933 .irq_type = IRQ_TYPE_MSI,
936 static const struct pci_endpoint_test_data j721e_data = {
938 .irq_type = IRQ_TYPE_MSI,
941 static const struct pci_device_id pci_endpoint_test_tbl[] = {
942 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x),
943 .driver_data = (kernel_ulong_t)&default_data,
945 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x),
946 .driver_data = (kernel_ulong_t)&default_data,
948 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) },
949 { PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) },
950 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654),
951 .driver_data = (kernel_ulong_t)&am654_data
953 { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0),
955 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721E),
956 .driver_data = (kernel_ulong_t)&j721e_data,
960 MODULE_DEVICE_TABLE(pci, pci_endpoint_test_tbl);
962 static struct pci_driver pci_endpoint_test_driver = {
963 .name = DRV_MODULE_NAME,
964 .id_table = pci_endpoint_test_tbl,
965 .probe = pci_endpoint_test_probe,
966 .remove = pci_endpoint_test_remove,
968 module_pci_driver(pci_endpoint_test_driver);
970 MODULE_DESCRIPTION("PCI ENDPOINT TEST HOST DRIVER");
971 MODULE_AUTHOR("Kishon Vijay Abraham I <kishon@ti.com>");
972 MODULE_LICENSE("GPL v2");