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
73 #define PCI_DEVICE_ID_LS1088A 0x80c0
75 #define is_am654_pci_dev(pdev) \
76 ((pdev)->device == PCI_DEVICE_ID_TI_AM654)
78 #define PCI_DEVICE_ID_RENESAS_R8A774A1 0x0028
79 #define PCI_DEVICE_ID_RENESAS_R8A774B1 0x002b
80 #define PCI_DEVICE_ID_RENESAS_R8A774C0 0x002d
81 #define PCI_DEVICE_ID_RENESAS_R8A774E1 0x0025
83 static DEFINE_IDA(pci_endpoint_test_ida);
85 #define to_endpoint_test(priv) container_of((priv), struct pci_endpoint_test, \
89 module_param(no_msi, bool, 0444);
90 MODULE_PARM_DESC(no_msi, "Disable MSI interrupt in pci_endpoint_test");
92 static int irq_type = IRQ_TYPE_MSI;
93 module_param(irq_type, int, 0444);
94 MODULE_PARM_DESC(irq_type, "IRQ mode selection in pci_endpoint_test (0 - Legacy, 1 - MSI, 2 - MSI-X)");
105 struct pci_endpoint_test {
106 struct pci_dev *pdev;
108 void __iomem *bar[PCI_STD_NUM_BARS];
109 struct completion irq_raised;
113 /* mutex to protect the ioctls */
115 struct miscdevice miscdev;
116 enum pci_barno test_reg_bar;
121 struct pci_endpoint_test_data {
122 enum pci_barno test_reg_bar;
127 static inline u32 pci_endpoint_test_readl(struct pci_endpoint_test *test,
130 return readl(test->base + offset);
133 static inline void pci_endpoint_test_writel(struct pci_endpoint_test *test,
134 u32 offset, u32 value)
136 writel(value, test->base + offset);
139 static inline u32 pci_endpoint_test_bar_readl(struct pci_endpoint_test *test,
142 return readl(test->bar[bar] + offset);
145 static inline void pci_endpoint_test_bar_writel(struct pci_endpoint_test *test,
146 int bar, u32 offset, u32 value)
148 writel(value, test->bar[bar] + offset);
151 static irqreturn_t pci_endpoint_test_irqhandler(int irq, void *dev_id)
153 struct pci_endpoint_test *test = dev_id;
156 reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);
157 if (reg & STATUS_IRQ_RAISED) {
158 test->last_irq = irq;
159 complete(&test->irq_raised);
160 reg &= ~STATUS_IRQ_RAISED;
162 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_STATUS,
168 static void pci_endpoint_test_free_irq_vectors(struct pci_endpoint_test *test)
170 struct pci_dev *pdev = test->pdev;
172 pci_free_irq_vectors(pdev);
173 test->irq_type = IRQ_TYPE_UNDEFINED;
176 static bool pci_endpoint_test_alloc_irq_vectors(struct pci_endpoint_test *test,
180 struct pci_dev *pdev = test->pdev;
181 struct device *dev = &pdev->dev;
185 case IRQ_TYPE_LEGACY:
186 irq = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY);
188 dev_err(dev, "Failed to get Legacy interrupt\n");
191 irq = pci_alloc_irq_vectors(pdev, 1, 32, PCI_IRQ_MSI);
193 dev_err(dev, "Failed to get MSI interrupts\n");
196 irq = pci_alloc_irq_vectors(pdev, 1, 2048, PCI_IRQ_MSIX);
198 dev_err(dev, "Failed to get MSI-X interrupts\n");
201 dev_err(dev, "Invalid IRQ type selected\n");
209 test->irq_type = type;
210 test->num_irqs = irq;
215 static void pci_endpoint_test_release_irq(struct pci_endpoint_test *test)
218 struct pci_dev *pdev = test->pdev;
219 struct device *dev = &pdev->dev;
221 for (i = 0; i < test->num_irqs; i++)
222 devm_free_irq(dev, pci_irq_vector(pdev, i), test);
227 static bool pci_endpoint_test_request_irq(struct pci_endpoint_test *test)
231 struct pci_dev *pdev = test->pdev;
232 struct device *dev = &pdev->dev;
234 for (i = 0; i < test->num_irqs; i++) {
235 err = devm_request_irq(dev, pci_irq_vector(pdev, i),
236 pci_endpoint_test_irqhandler,
237 IRQF_SHARED, test->name, test);
246 case IRQ_TYPE_LEGACY:
247 dev_err(dev, "Failed to request IRQ %d for Legacy\n",
248 pci_irq_vector(pdev, i));
251 dev_err(dev, "Failed to request IRQ %d for MSI %d\n",
252 pci_irq_vector(pdev, i),
256 dev_err(dev, "Failed to request IRQ %d for MSI-X %d\n",
257 pci_irq_vector(pdev, i),
265 static bool pci_endpoint_test_bar(struct pci_endpoint_test *test,
266 enum pci_barno barno)
271 struct pci_dev *pdev = test->pdev;
273 if (!test->bar[barno])
276 size = pci_resource_len(pdev, barno);
278 if (barno == test->test_reg_bar)
281 for (j = 0; j < size; j += 4)
282 pci_endpoint_test_bar_writel(test, barno, j, 0xA0A0A0A0);
284 for (j = 0; j < size; j += 4) {
285 val = pci_endpoint_test_bar_readl(test, barno, j);
286 if (val != 0xA0A0A0A0)
293 static bool pci_endpoint_test_legacy_irq(struct pci_endpoint_test *test)
297 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,
299 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 0);
300 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
301 COMMAND_RAISE_LEGACY_IRQ);
302 val = wait_for_completion_timeout(&test->irq_raised,
303 msecs_to_jiffies(1000));
310 static bool pci_endpoint_test_msi_irq(struct pci_endpoint_test *test,
311 u16 msi_num, bool msix)
314 struct pci_dev *pdev = test->pdev;
316 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE,
317 msix == false ? IRQ_TYPE_MSI :
319 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, msi_num);
320 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
321 msix == false ? COMMAND_RAISE_MSI_IRQ :
322 COMMAND_RAISE_MSIX_IRQ);
323 val = wait_for_completion_timeout(&test->irq_raised,
324 msecs_to_jiffies(1000));
328 if (pci_irq_vector(pdev, msi_num - 1) == test->last_irq)
334 static bool pci_endpoint_test_copy(struct pci_endpoint_test *test,
337 struct pci_endpoint_test_xfer_param param;
344 dma_addr_t src_phys_addr;
345 dma_addr_t dst_phys_addr;
346 struct pci_dev *pdev = test->pdev;
347 struct device *dev = &pdev->dev;
349 dma_addr_t orig_src_phys_addr;
351 dma_addr_t orig_dst_phys_addr;
353 size_t alignment = test->alignment;
354 int irq_type = test->irq_type;
359 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
361 dev_err(dev, "Failed to get transfer param\n");
366 if (size > SIZE_MAX - alignment)
369 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
371 flags |= FLAG_USE_DMA;
373 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
374 dev_err(dev, "Invalid IRQ type option\n");
378 orig_src_addr = kzalloc(size + alignment, GFP_KERNEL);
379 if (!orig_src_addr) {
380 dev_err(dev, "Failed to allocate source buffer\n");
385 get_random_bytes(orig_src_addr, size + alignment);
386 orig_src_phys_addr = dma_map_single(dev, orig_src_addr,
387 size + alignment, DMA_TO_DEVICE);
388 if (dma_mapping_error(dev, orig_src_phys_addr)) {
389 dev_err(dev, "failed to map source buffer address\n");
391 goto err_src_phys_addr;
394 if (alignment && !IS_ALIGNED(orig_src_phys_addr, alignment)) {
395 src_phys_addr = PTR_ALIGN(orig_src_phys_addr, alignment);
396 offset = src_phys_addr - orig_src_phys_addr;
397 src_addr = orig_src_addr + offset;
399 src_phys_addr = orig_src_phys_addr;
400 src_addr = orig_src_addr;
403 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,
404 lower_32_bits(src_phys_addr));
406 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,
407 upper_32_bits(src_phys_addr));
409 src_crc32 = crc32_le(~0, src_addr, size);
411 orig_dst_addr = kzalloc(size + alignment, GFP_KERNEL);
412 if (!orig_dst_addr) {
413 dev_err(dev, "Failed to allocate destination address\n");
418 orig_dst_phys_addr = dma_map_single(dev, orig_dst_addr,
419 size + alignment, DMA_FROM_DEVICE);
420 if (dma_mapping_error(dev, orig_dst_phys_addr)) {
421 dev_err(dev, "failed to map destination buffer address\n");
423 goto err_dst_phys_addr;
426 if (alignment && !IS_ALIGNED(orig_dst_phys_addr, alignment)) {
427 dst_phys_addr = PTR_ALIGN(orig_dst_phys_addr, alignment);
428 offset = dst_phys_addr - orig_dst_phys_addr;
429 dst_addr = orig_dst_addr + offset;
431 dst_phys_addr = orig_dst_phys_addr;
432 dst_addr = orig_dst_addr;
435 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,
436 lower_32_bits(dst_phys_addr));
437 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,
438 upper_32_bits(dst_phys_addr));
440 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE,
443 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
444 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
445 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
446 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
449 wait_for_completion(&test->irq_raised);
451 dma_unmap_single(dev, orig_dst_phys_addr, size + alignment,
454 dst_crc32 = crc32_le(~0, dst_addr, size);
455 if (dst_crc32 == src_crc32)
459 kfree(orig_dst_addr);
462 dma_unmap_single(dev, orig_src_phys_addr, size + alignment,
466 kfree(orig_src_addr);
472 static bool pci_endpoint_test_write(struct pci_endpoint_test *test,
475 struct pci_endpoint_test_xfer_param param;
481 dma_addr_t phys_addr;
482 struct pci_dev *pdev = test->pdev;
483 struct device *dev = &pdev->dev;
485 dma_addr_t orig_phys_addr;
487 size_t alignment = test->alignment;
488 int irq_type = test->irq_type;
493 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
495 dev_err(dev, "Failed to get transfer param\n");
500 if (size > SIZE_MAX - alignment)
503 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
505 flags |= FLAG_USE_DMA;
507 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
508 dev_err(dev, "Invalid IRQ type option\n");
512 orig_addr = kzalloc(size + alignment, GFP_KERNEL);
514 dev_err(dev, "Failed to allocate address\n");
519 get_random_bytes(orig_addr, size + alignment);
521 orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
523 if (dma_mapping_error(dev, orig_phys_addr)) {
524 dev_err(dev, "failed to map source buffer address\n");
529 if (alignment && !IS_ALIGNED(orig_phys_addr, alignment)) {
530 phys_addr = PTR_ALIGN(orig_phys_addr, alignment);
531 offset = phys_addr - orig_phys_addr;
532 addr = orig_addr + offset;
534 phys_addr = orig_phys_addr;
538 crc32 = crc32_le(~0, addr, size);
539 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_CHECKSUM,
542 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_SRC_ADDR,
543 lower_32_bits(phys_addr));
544 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_SRC_ADDR,
545 upper_32_bits(phys_addr));
547 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);
549 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
550 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
551 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
552 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
555 wait_for_completion(&test->irq_raised);
557 reg = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);
558 if (reg & STATUS_READ_SUCCESS)
561 dma_unmap_single(dev, orig_phys_addr, size + alignment,
571 static bool pci_endpoint_test_read(struct pci_endpoint_test *test,
574 struct pci_endpoint_test_xfer_param param;
580 dma_addr_t phys_addr;
581 struct pci_dev *pdev = test->pdev;
582 struct device *dev = &pdev->dev;
584 dma_addr_t orig_phys_addr;
586 size_t alignment = test->alignment;
587 int irq_type = test->irq_type;
591 err = copy_from_user(¶m, (void __user *)arg, sizeof(param));
593 dev_err(dev, "Failed to get transfer param\n");
598 if (size > SIZE_MAX - alignment)
601 use_dma = !!(param.flags & PCITEST_FLAGS_USE_DMA);
603 flags |= FLAG_USE_DMA;
605 if (irq_type < IRQ_TYPE_LEGACY || irq_type > IRQ_TYPE_MSIX) {
606 dev_err(dev, "Invalid IRQ type option\n");
610 orig_addr = kzalloc(size + alignment, GFP_KERNEL);
612 dev_err(dev, "Failed to allocate destination address\n");
617 orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
619 if (dma_mapping_error(dev, orig_phys_addr)) {
620 dev_err(dev, "failed to map source buffer address\n");
625 if (alignment && !IS_ALIGNED(orig_phys_addr, alignment)) {
626 phys_addr = PTR_ALIGN(orig_phys_addr, alignment);
627 offset = phys_addr - orig_phys_addr;
628 addr = orig_addr + offset;
630 phys_addr = orig_phys_addr;
634 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_LOWER_DST_ADDR,
635 lower_32_bits(phys_addr));
636 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_UPPER_DST_ADDR,
637 upper_32_bits(phys_addr));
639 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_SIZE, size);
641 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_FLAGS, flags);
642 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_TYPE, irq_type);
643 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_IRQ_NUMBER, 1);
644 pci_endpoint_test_writel(test, PCI_ENDPOINT_TEST_COMMAND,
647 wait_for_completion(&test->irq_raised);
649 dma_unmap_single(dev, orig_phys_addr, size + alignment,
652 crc32 = crc32_le(~0, addr, size);
653 if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))
662 static bool pci_endpoint_test_clear_irq(struct pci_endpoint_test *test)
664 pci_endpoint_test_release_irq(test);
665 pci_endpoint_test_free_irq_vectors(test);
669 static bool pci_endpoint_test_set_irq(struct pci_endpoint_test *test,
672 struct pci_dev *pdev = test->pdev;
673 struct device *dev = &pdev->dev;
675 if (req_irq_type < IRQ_TYPE_LEGACY || req_irq_type > IRQ_TYPE_MSIX) {
676 dev_err(dev, "Invalid IRQ type option\n");
680 if (test->irq_type == req_irq_type)
683 pci_endpoint_test_release_irq(test);
684 pci_endpoint_test_free_irq_vectors(test);
686 if (!pci_endpoint_test_alloc_irq_vectors(test, req_irq_type))
689 if (!pci_endpoint_test_request_irq(test))
695 pci_endpoint_test_free_irq_vectors(test);
699 static long pci_endpoint_test_ioctl(struct file *file, unsigned int cmd,
704 struct pci_endpoint_test *test = to_endpoint_test(file->private_data);
705 struct pci_dev *pdev = test->pdev;
707 mutex_lock(&test->mutex);
713 if (is_am654_pci_dev(pdev) && bar == BAR_0)
715 ret = pci_endpoint_test_bar(test, bar);
717 case PCITEST_LEGACY_IRQ:
718 ret = pci_endpoint_test_legacy_irq(test);
722 ret = pci_endpoint_test_msi_irq(test, arg, cmd == PCITEST_MSIX);
725 ret = pci_endpoint_test_write(test, arg);
728 ret = pci_endpoint_test_read(test, arg);
731 ret = pci_endpoint_test_copy(test, arg);
733 case PCITEST_SET_IRQTYPE:
734 ret = pci_endpoint_test_set_irq(test, arg);
736 case PCITEST_GET_IRQTYPE:
739 case PCITEST_CLEAR_IRQ:
740 ret = pci_endpoint_test_clear_irq(test);
745 mutex_unlock(&test->mutex);
749 static const struct file_operations pci_endpoint_test_fops = {
750 .owner = THIS_MODULE,
751 .unlocked_ioctl = pci_endpoint_test_ioctl,
754 static int pci_endpoint_test_probe(struct pci_dev *pdev,
755 const struct pci_device_id *ent)
762 struct device *dev = &pdev->dev;
763 struct pci_endpoint_test *test;
764 struct pci_endpoint_test_data *data;
765 enum pci_barno test_reg_bar = BAR_0;
766 struct miscdevice *misc_device;
768 if (pci_is_bridge(pdev))
771 test = devm_kzalloc(dev, sizeof(*test), GFP_KERNEL);
775 test->test_reg_bar = 0;
778 test->irq_type = IRQ_TYPE_UNDEFINED;
781 irq_type = IRQ_TYPE_LEGACY;
783 data = (struct pci_endpoint_test_data *)ent->driver_data;
785 test_reg_bar = data->test_reg_bar;
786 test->test_reg_bar = test_reg_bar;
787 test->alignment = data->alignment;
788 irq_type = data->irq_type;
791 init_completion(&test->irq_raised);
792 mutex_init(&test->mutex);
794 if ((dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(48)) != 0) &&
795 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0) {
796 dev_err(dev, "Cannot set DMA mask\n");
800 err = pci_enable_device(pdev);
802 dev_err(dev, "Cannot enable PCI device\n");
806 err = pci_request_regions(pdev, DRV_MODULE_NAME);
808 dev_err(dev, "Cannot obtain PCI resources\n");
809 goto err_disable_pdev;
812 pci_set_master(pdev);
814 if (!pci_endpoint_test_alloc_irq_vectors(test, irq_type)) {
816 goto err_disable_irq;
819 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
820 if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
821 base = pci_ioremap_bar(pdev, bar);
823 dev_err(dev, "Failed to read BAR%d\n", bar);
824 WARN_ON(bar == test_reg_bar);
826 test->bar[bar] = base;
830 test->base = test->bar[test_reg_bar];
833 dev_err(dev, "Cannot perform PCI test without BAR%d\n",
838 pci_set_drvdata(pdev, test);
840 id = ida_simple_get(&pci_endpoint_test_ida, 0, 0, GFP_KERNEL);
843 dev_err(dev, "Unable to get id\n");
847 snprintf(name, sizeof(name), DRV_MODULE_NAME ".%d", id);
848 test->name = kstrdup(name, GFP_KERNEL);
854 if (!pci_endpoint_test_request_irq(test)) {
856 goto err_kfree_test_name;
859 misc_device = &test->miscdev;
860 misc_device->minor = MISC_DYNAMIC_MINOR;
861 misc_device->name = kstrdup(name, GFP_KERNEL);
862 if (!misc_device->name) {
864 goto err_release_irq;
866 misc_device->fops = &pci_endpoint_test_fops,
868 err = misc_register(misc_device);
870 dev_err(dev, "Failed to register device\n");
877 kfree(misc_device->name);
880 pci_endpoint_test_release_irq(test);
886 ida_simple_remove(&pci_endpoint_test_ida, id);
889 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
891 pci_iounmap(pdev, test->bar[bar]);
895 pci_endpoint_test_free_irq_vectors(test);
896 pci_release_regions(pdev);
899 pci_disable_device(pdev);
904 static void pci_endpoint_test_remove(struct pci_dev *pdev)
908 struct pci_endpoint_test *test = pci_get_drvdata(pdev);
909 struct miscdevice *misc_device = &test->miscdev;
911 if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1)
916 misc_deregister(&test->miscdev);
917 kfree(misc_device->name);
919 ida_simple_remove(&pci_endpoint_test_ida, id);
920 for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
922 pci_iounmap(pdev, test->bar[bar]);
925 pci_endpoint_test_release_irq(test);
926 pci_endpoint_test_free_irq_vectors(test);
928 pci_release_regions(pdev);
929 pci_disable_device(pdev);
932 static const struct pci_endpoint_test_data default_data = {
933 .test_reg_bar = BAR_0,
935 .irq_type = IRQ_TYPE_MSI,
938 static const struct pci_endpoint_test_data am654_data = {
939 .test_reg_bar = BAR_2,
941 .irq_type = IRQ_TYPE_MSI,
944 static const struct pci_endpoint_test_data j721e_data = {
946 .irq_type = IRQ_TYPE_MSI,
949 static const struct pci_device_id pci_endpoint_test_tbl[] = {
950 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x),
951 .driver_data = (kernel_ulong_t)&default_data,
953 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x),
954 .driver_data = (kernel_ulong_t)&default_data,
956 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0),
957 .driver_data = (kernel_ulong_t)&default_data,
959 { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LS1088A),
960 .driver_data = (kernel_ulong_t)&default_data,
962 { PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) },
963 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654),
964 .driver_data = (kernel_ulong_t)&am654_data
966 { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774A1),},
967 { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774B1),},
968 { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0),},
969 { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774E1),},
970 { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721E),
971 .driver_data = (kernel_ulong_t)&j721e_data,
975 MODULE_DEVICE_TABLE(pci, pci_endpoint_test_tbl);
977 static struct pci_driver pci_endpoint_test_driver = {
978 .name = DRV_MODULE_NAME,
979 .id_table = pci_endpoint_test_tbl,
980 .probe = pci_endpoint_test_probe,
981 .remove = pci_endpoint_test_remove,
983 module_pci_driver(pci_endpoint_test_driver);
985 MODULE_DESCRIPTION("PCI ENDPOINT TEST HOST DRIVER");
986 MODULE_AUTHOR("Kishon Vijay Abraham I <kishon@ti.com>");
987 MODULE_LICENSE("GPL v2");