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path: root/drivers/pci/host/pci-host-generic.c
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Diffstat (limited to 'drivers/pci/host/pci-host-generic.c')
-rw-r--r--drivers/pci/host/pci-host-generic.c41
1 files changed, 19 insertions, 22 deletions
diff --git a/drivers/pci/host/pci-host-generic.c b/drivers/pci/host/pci-host-generic.c
index 265dd25169bf..5434c90db243 100644
--- a/drivers/pci/host/pci-host-generic.c
+++ b/drivers/pci/host/pci-host-generic.c
@@ -27,7 +27,7 @@
struct gen_pci_cfg_bus_ops {
u32 bus_shift;
- void __iomem *(*map_bus)(struct pci_bus *, unsigned int, int);
+ struct pci_ops ops;
};
struct gen_pci_cfg_windows {
@@ -35,7 +35,7 @@ struct gen_pci_cfg_windows {
struct resource *bus_range;
void __iomem **win;
- const struct gen_pci_cfg_bus_ops *ops;
+ struct gen_pci_cfg_bus_ops *ops;
};
/*
@@ -65,7 +65,11 @@ static void __iomem *gen_pci_map_cfg_bus_cam(struct pci_bus *bus,
static struct gen_pci_cfg_bus_ops gen_pci_cfg_cam_bus_ops = {
.bus_shift = 16,
- .map_bus = gen_pci_map_cfg_bus_cam,
+ .ops = {
+ .map_bus = gen_pci_map_cfg_bus_cam,
+ .read = pci_generic_config_read,
+ .write = pci_generic_config_write,
+ }
};
static void __iomem *gen_pci_map_cfg_bus_ecam(struct pci_bus *bus,
@@ -80,12 +84,11 @@ static void __iomem *gen_pci_map_cfg_bus_ecam(struct pci_bus *bus,
static struct gen_pci_cfg_bus_ops gen_pci_cfg_ecam_bus_ops = {
.bus_shift = 20,
- .map_bus = gen_pci_map_cfg_bus_ecam,
-};
-
-static struct pci_ops gen_pci_ops = {
- .read = pci_generic_config_read,
- .write = pci_generic_config_write,
+ .ops = {
+ .map_bus = gen_pci_map_cfg_bus_ecam,
+ .read = pci_generic_config_read,
+ .write = pci_generic_config_write,
+ }
};
static const struct of_device_id gen_pci_of_match[] = {
@@ -166,6 +169,7 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
struct resource *bus_range;
struct device *dev = pci->host.dev.parent;
struct device_node *np = dev->of_node;
+ u32 sz = 1 << pci->cfg.ops->bus_shift;
err = of_address_to_resource(np, 0, &pci->cfg.res);
if (err) {
@@ -193,10 +197,9 @@ static int gen_pci_parse_map_cfg_windows(struct gen_pci *pci)
bus_range = pci->cfg.bus_range;
for (busn = bus_range->start; busn <= bus_range->end; ++busn) {
u32 idx = busn - bus_range->start;
- u32 sz = 1 << pci->cfg.ops->bus_shift;
pci->cfg.win[idx] = devm_ioremap(dev,
- pci->cfg.res.start + busn * sz,
+ pci->cfg.res.start + idx * sz,
sz);
if (!pci->cfg.win[idx])
return -ENOMEM;
@@ -210,7 +213,6 @@ static int gen_pci_probe(struct platform_device *pdev)
int err;
const char *type;
const struct of_device_id *of_id;
- const int *prop;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct gen_pci *pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
@@ -225,17 +227,10 @@ static int gen_pci_probe(struct platform_device *pdev)
return -EINVAL;
}
- prop = of_get_property(of_chosen, "linux,pci-probe-only", NULL);
- if (prop) {
- if (*prop)
- pci_add_flags(PCI_PROBE_ONLY);
- else
- pci_clear_flags(PCI_PROBE_ONLY);
- }
+ of_pci_check_probe_only();
of_id = of_match_node(gen_pci_of_match, np);
- pci->cfg.ops = of_id->data;
- gen_pci_ops.map_bus = pci->cfg.ops->map_bus;
+ pci->cfg.ops = (struct gen_pci_cfg_bus_ops *)of_id->data;
pci->host.dev.parent = dev;
INIT_LIST_HEAD(&pci->host.windows);
INIT_LIST_HEAD(&pci->resources);
@@ -256,7 +251,9 @@ static int gen_pci_probe(struct platform_device *pdev)
if (!pci_has_flag(PCI_PROBE_ONLY))
pci_add_flags(PCI_REASSIGN_ALL_RSRC | PCI_REASSIGN_ALL_BUS);
- bus = pci_scan_root_bus(dev, 0, &gen_pci_ops, pci, &pci->resources);
+
+ bus = pci_scan_root_bus(dev, pci->cfg.bus_range->start,
+ &pci->cfg.ops->ops, pci, &pci->resources);
if (!bus) {
dev_err(dev, "Scanning rootbus failed");
return -ENODEV;