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Date: Mon, 7 Jan 2019 12:11:44 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
Alan Douglas <adouglas@...ence.com>,
Shawn Lin <shawn.lin@...k-chips.com>
CC: Jingoo Han <jingoohan1@...il.com>,
Heiko Stuebner <heiko@...ech.de>,
Cyrille Pitchen <cyrille.pitchen@...e-electrons.com>,
Jia-Ju Bai <baijiaju1990@...il.com>,
<linux-omap@...r.kernel.org>, <linux-pci@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-rockchip@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>, <kishon@...com>
Subject: [PATCH 11/15] PCI: pci-epf-test: Use pci_epc_get_features to get EPC features
Use pci_epc_get_features to get EPC features such as linkup
notifier support, MSI/MSIX capable, BAR configuration etc and use it
for configuring pci-epf-test. Since these features are now obtained
directly from EPC driver, remove pci_epf_test_data which was initially
added to have EPC features in endpoint function driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
drivers/pci/endpoint/functions/pci-epf-test.c | 72 ++++++++++---------
1 file changed, 39 insertions(+), 33 deletions(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index ade296180383..a26f6ccaa322 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -47,8 +47,6 @@ struct pci_epf_test {
void *reg[6];
struct pci_epf *epf;
enum pci_barno test_reg_bar;
- bool linkup_notifier;
- bool msix_available;
struct delayed_work cmd_handler;
};
@@ -71,11 +69,6 @@ static struct pci_epf_header test_header = {
.interrupt_pin = PCI_INTERRUPT_INTA,
};
-struct pci_epf_test_data {
- enum pci_barno test_reg_bar;
- bool linkup_notifier;
-};
-
static size_t bar_size[] = { 512, 512, 1024, 16384, 131072, 1048576 };
static int pci_epf_test_copy(struct pci_epf_test *epf_test)
@@ -458,25 +451,49 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf)
return 0;
}
+static void pci_epf_configure_bar(struct pci_epf *epf,
+ const struct pci_epc_features *epc_features)
+{
+ struct pci_epf_bar *epf_bar;
+ bool bar_fixed_64bit;
+ int i;
+
+ for (i = BAR_0; i <= BAR_5; i++) {
+ epf_bar = &epf->bar[i];
+ bar_fixed_64bit = !!(epc_features->bar_fixed_64bit & (1 << i));
+ if (bar_fixed_64bit)
+ epf_bar->flags |= PCI_BASE_ADDRESS_MEM_TYPE_64;
+ if (epc_features->bar_fixed_size[i])
+ bar_size[i] = epc_features->bar_fixed_size[i];
+ }
+}
+
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;
+ const struct pci_epc_features *epc_features;
+ enum pci_barno test_reg_bar = BAR_0;
struct pci_epc *epc = epf->epc;
struct device *dev = &epf->dev;
+ bool linkup_notifier = false;
+ bool msix_capable = false;
+ bool msi_capable = true;
if (WARN_ON_ONCE(!epc))
return -EINVAL;
- if (epc->features & EPC_FEATURE_NO_LINKUP_NOTIFIER)
- epf_test->linkup_notifier = false;
- else
- epf_test->linkup_notifier = true;
-
- epf_test->msix_available = epc->features & EPC_FEATURE_MSIX_AVAILABLE;
+ epc_features = pci_epc_get_features(epc, epf->func_no);
+ if (!epc_features) {
+ linkup_notifier = epc_features->linkup_notifier;
+ msix_capable = epc_features->msix_capable;
+ msi_capable = epc_features->msi_capable;
+ test_reg_bar = pci_epc_get_first_free_bar(epc_features);
+ pci_epf_configure_bar(epf, epc_features);
+ }
- epf_test->test_reg_bar = EPC_FEATURE_GET_BAR(epc->features);
+ epf_test->test_reg_bar = test_reg_bar;
ret = pci_epc_write_header(epc, epf->func_no, header);
if (ret) {
@@ -492,13 +509,15 @@ static int pci_epf_test_bind(struct pci_epf *epf)
if (ret)
return ret;
- ret = pci_epc_set_msi(epc, epf->func_no, epf->msi_interrupts);
- if (ret) {
- dev_err(dev, "MSI configuration failed\n");
- return ret;
+ if (msi_capable) {
+ ret = pci_epc_set_msi(epc, epf->func_no, epf->msi_interrupts);
+ if (ret) {
+ dev_err(dev, "MSI configuration failed\n");
+ return ret;
+ }
}
- if (epf_test->msix_available) {
+ if (msix_capable) {
ret = pci_epc_set_msix(epc, epf->func_no, epf->msix_interrupts);
if (ret) {
dev_err(dev, "MSI-X configuration failed\n");
@@ -506,7 +525,7 @@ static int pci_epf_test_bind(struct pci_epf *epf)
}
}
- if (!epf_test->linkup_notifier)
+ if (!linkup_notifier)
queue_work(kpcitest_workqueue, &epf_test->cmd_handler.work);
return 0;
@@ -523,17 +542,6 @@ 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;
- 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) {
- 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)
@@ -541,8 +549,6 @@ 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);
--
2.17.1
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