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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-08-18 20:28:00 +0530 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-08-29 16:00:38 -0500 |
| commit | 702a3ed9d6ea8c9fe438725c32bfe7d967959070 (patch) | |
| tree | b8b05d148e543ddf1aa9a18b4a285a6c7b6de1c0 /drivers/pci/endpoint | |
| parent | 3235b994950d84d64dd7c60a1dfe05b51a1533bf (diff) | |
| download | linux-0-day-702a3ed9d6ea8c9fe438725c32bfe7d967959070.tar.gz linux-0-day-702a3ed9d6ea8c9fe438725c32bfe7d967959070.tar.xz | |
PCI: endpoint: Add support to poll early for host commands
Certain platforms like TI's K2G doesn't support link-up notification. Add
support to poll early (without waiting for the linkup notification) for
commands from the host.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/endpoint')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-test.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index e378dae9e5102..a0aea2500690b 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -55,6 +55,7 @@ struct pci_epf_test { void *reg[6]; struct pci_epf *epf; enum pci_barno test_reg_bar; + bool linkup_notifier; struct delayed_work cmd_handler; }; @@ -77,6 +78,7 @@ static struct pci_epf_header test_header = { struct pci_epf_test_data { enum pci_barno test_reg_bar; + bool linkup_notifier; }; static int bar_size[] = { 512, 512, 1024, 16384, 131072, 1048576 }; @@ -424,6 +426,7 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf) static int pci_epf_test_bind(struct pci_epf *epf) { int ret; + struct pci_epf_test *epf_test = epf_get_drvdata(epf); struct pci_epf_header *header = epf->header; struct pci_epc *epc = epf->epc; struct device *dev = &epf->dev; @@ -449,6 +452,9 @@ static int pci_epf_test_bind(struct pci_epf *epf) if (ret) return ret; + if (!epf_test->linkup_notifier) + queue_work(kpcitest_workqueue, &epf_test->cmd_handler.work); + return 0; } @@ -466,11 +472,14 @@ static int pci_epf_test_probe(struct pci_epf *epf) const struct pci_epf_device_id *match; struct pci_epf_test_data *data; enum pci_barno test_reg_bar = BAR_0; + bool linkup_notifier = true; match = pci_epf_match_device(pci_epf_test_ids, epf); data = (struct pci_epf_test_data *)match->driver_data; - if (data) + if (data) { test_reg_bar = data->test_reg_bar; + linkup_notifier = data->linkup_notifier; + } epf_test = devm_kzalloc(dev, sizeof(*epf_test), GFP_KERNEL); if (!epf_test) @@ -479,6 +488,7 @@ 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; + epf_test->linkup_notifier = linkup_notifier; INIT_DELAYED_WORK(&epf_test->cmd_handler, pci_epf_test_cmd_handler); |