diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-test.c | 60 |
1 files changed, 42 insertions, 18 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 1a27d7950f2c..e378dae9e510 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -54,6 +54,7 @@ static struct workqueue_struct *kpcitest_workqueue; struct pci_epf_test { void *reg[6]; struct pci_epf *epf; + enum pci_barno test_reg_bar; struct delayed_work cmd_handler; }; @@ -74,7 +75,11 @@ static struct pci_epf_header test_header = { .interrupt_pin = PCI_INTERRUPT_INTA, }; -static int bar_size[] = { 512, 1024, 16384, 131072, 1048576 }; +struct pci_epf_test_data { + enum pci_barno test_reg_bar; +}; + +static int bar_size[] = { 512, 512, 1024, 16384, 131072, 1048576 }; static int pci_epf_test_copy(struct pci_epf_test *epf_test) { @@ -86,7 +91,8 @@ static int pci_epf_test_copy(struct pci_epf_test *epf_test) struct pci_epf *epf = epf_test->epf; struct device *dev = &epf->dev; struct pci_epc *epc = epf->epc; - struct pci_epf_test_reg *reg = epf_test->reg[0]; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; + struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; src_addr = pci_epc_mem_alloc_addr(epc, &src_phys_addr, reg->size); if (!src_addr) { @@ -145,7 +151,8 @@ static int pci_epf_test_read(struct pci_epf_test *epf_test) struct pci_epf *epf = epf_test->epf; struct device *dev = &epf->dev; struct pci_epc *epc = epf->epc; - struct pci_epf_test_reg *reg = epf_test->reg[0]; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; + struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; src_addr = pci_epc_mem_alloc_addr(epc, &phys_addr, reg->size); if (!src_addr) { @@ -195,7 +202,8 @@ static int pci_epf_test_write(struct pci_epf_test *epf_test) struct pci_epf *epf = epf_test->epf; struct device *dev = &epf->dev; struct pci_epc *epc = epf->epc; - struct pci_epf_test_reg *reg = epf_test->reg[0]; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; + struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; dst_addr = pci_epc_mem_alloc_addr(epc, &phys_addr, reg->size); if (!dst_addr) { @@ -247,7 +255,8 @@ static void pci_epf_test_raise_irq(struct pci_epf_test *epf_test) u8 msi_count; struct pci_epf *epf = epf_test->epf; struct pci_epc *epc = epf->epc; - struct pci_epf_test_reg *reg = epf_test->reg[0]; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; + struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; reg->status |= STATUS_IRQ_RAISED; msi_count = pci_epc_get_msi(epc); @@ -268,13 +277,15 @@ static void pci_epf_test_cmd_handler(struct work_struct *work) cmd_handler.work); struct pci_epf *epf = epf_test->epf; struct pci_epc *epc = epf->epc; - volatile struct pci_epf_test_reg *reg = epf_test->reg[0]; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; + struct pci_epf_test_reg *reg = epf_test->reg[test_reg_bar]; command = reg->command; if (!command) goto reset_handler; reg->command = 0; + reg->status = 0; if (command & COMMAND_RAISE_LEGACY_IRQ) { reg->status = STATUS_IRQ_RAISED; @@ -360,6 +371,7 @@ static int pci_epf_test_set_bar(struct pci_epf *epf) struct pci_epc *epc = epf->epc; struct device *dev = &epf->dev; struct pci_epf_test *epf_test = epf_get_drvdata(epf); + enum pci_barno test_reg_bar = epf_test->test_reg_bar; flags = PCI_BASE_ADDRESS_SPACE_MEMORY | PCI_BASE_ADDRESS_MEM_TYPE_32; if (sizeof(dma_addr_t) == 0x8) @@ -372,7 +384,7 @@ static int pci_epf_test_set_bar(struct pci_epf *epf) if (ret) { pci_epf_free_space(epf, epf_test->reg[bar], bar); dev_err(dev, "failed to set BAR%d\n", bar); - if (bar == BAR_0) + if (bar == test_reg_bar) return ret; } } @@ -386,17 +398,20 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf) struct device *dev = &epf->dev; void *base; int bar; + enum pci_barno test_reg_bar = epf_test->test_reg_bar; base = pci_epf_alloc_space(epf, sizeof(struct pci_epf_test_reg), - BAR_0); + test_reg_bar); if (!base) { dev_err(dev, "failed to allocated register space\n"); return -ENOMEM; } - epf_test->reg[0] = base; + epf_test->reg[test_reg_bar] = base; - for (bar = BAR_1; bar <= BAR_5; bar++) { - base = pci_epf_alloc_space(epf, bar_size[bar - 1], bar); + for (bar = BAR_0; bar <= BAR_5; bar++) { + if (bar == test_reg_bar) + continue; + base = pci_epf_alloc_space(epf, bar_size[bar], bar); if (!base) dev_err(dev, "failed to allocate space for BAR%d\n", bar); @@ -437,10 +452,25 @@ static int pci_epf_test_bind(struct pci_epf *epf) return 0; } +static const struct pci_epf_device_id pci_epf_test_ids[] = { + { + .name = "pci_epf_test", + }, + {}, +}; + static int pci_epf_test_probe(struct pci_epf *epf) { struct pci_epf_test *epf_test; struct device *dev = &epf->dev; + const struct pci_epf_device_id *match; + struct pci_epf_test_data *data; + enum pci_barno test_reg_bar = BAR_0; + + match = pci_epf_match_device(pci_epf_test_ids, epf); + data = (struct pci_epf_test_data *)match->driver_data; + if (data) + test_reg_bar = data->test_reg_bar; epf_test = devm_kzalloc(dev, sizeof(*epf_test), GFP_KERNEL); if (!epf_test) @@ -448,6 +478,7 @@ static int pci_epf_test_probe(struct pci_epf *epf) epf->header = &test_header; epf_test->epf = epf; + epf_test->test_reg_bar = test_reg_bar; INIT_DELAYED_WORK(&epf_test->cmd_handler, pci_epf_test_cmd_handler); @@ -469,13 +500,6 @@ static struct pci_epf_ops ops = { .linkup = pci_epf_test_linkup, }; -static const struct pci_epf_device_id pci_epf_test_ids[] = { - { - .name = "pci_epf_test", - }, - {}, -}; - static struct pci_epf_driver test_driver = { .driver.name = "pci_epf_test", .probe = pci_epf_test_probe, |