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authorGabriele Paoloni <gabriele.paoloni@huawei.com>2015-10-30 03:56:51 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-11-02 23:49:18 +0300
commit883cc17cb193ad73bbc57934aa8d750162a9b79a (patch)
tree665f9d6c97b4505c5cd1dcb84b1fb8d4ac3378a6 /drivers/pci
parent907fce0902539ecde609e485eb2ecd7119a7a623 (diff)
downloadlinux-883cc17cb193ad73bbc57934aa8d750162a9b79a.tar.xz
PCI: designware: Move calculation of bus addresses to DRA7xx
Commit f4c55c5a3f7f ("PCI: designware: Program ATU with untranslated address") added the calculation of PCI bus addresses in pcie-designware.c, storing them in new fields added in struct pcie_port. This calculation is done for every DesignWare user even though it only applies to DRA7xx. Move the calculation of the bus addresses to the DRA7xx driver to allow the rework of DesignWare to use the new DT parsing API. Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> Signed-off-by: Zhou Wang <wangzhou1@hisilicon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/host/pci-dra7xx.c7
-rw-r--r--drivers/pci/host/pcie-designware.c15
2 files changed, 11 insertions, 11 deletions
diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c
index 199e29a044cd..0b4847a9fbfd 100644
--- a/drivers/pci/host/pci-dra7xx.c
+++ b/drivers/pci/host/pci-dra7xx.c
@@ -62,6 +62,7 @@
#define PCIECTRL_DRA7XX_CONF_PHY_CS 0x010C
#define LINK_UP BIT(16)
+#define DRA7XX_CPU_TO_BUS_ADDR 0x0FFFFFFF
struct dra7xx_pcie {
void __iomem *base;
@@ -151,6 +152,12 @@ static void dra7xx_pcie_enable_interrupts(struct pcie_port *pp)
static void dra7xx_pcie_host_init(struct pcie_port *pp)
{
dw_pcie_setup_rc(pp);
+
+ pp->io_mod_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->mem_mod_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->cfg0_mod_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->cfg1_mod_base &= DRA7XX_CPU_TO_BUS_ADDR;
+
dra7xx_pcie_establish_link(pp);
if (IS_ENABLED(CONFIG_PCI_MSI))
dw_pcie_msi_init(pp);
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index fb89ca23d9a8..e444acb172b6 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -417,14 +417,10 @@ int dw_pcie_host_init(struct pcie_port *pp)
struct of_pci_range range;
struct of_pci_range_parser parser;
struct resource *cfg_res;
- u32 val, na, ns;
+ u32 val, ns;
const __be32 *addrp;
int i, index, ret;
- /* Find the address cell size and the number of cells in order to get
- * the untranslated address.
- */
- of_property_read_u32(np, "#address-cells", &na);
ns = of_n_size_cells(np);
cfg_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config");
@@ -467,8 +463,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->io_base = range.cpu_addr;
/* Find the untranslated IO space address */
- pp->io_mod_base = of_read_number(parser.range -
- parser.np + na, ns);
+ pp->io_mod_base = range.cpu_addr;
}
if (restype == IORESOURCE_MEM) {
of_pci_range_to_resource(&range, np, &pp->mem);
@@ -477,8 +472,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->mem_bus_addr = range.pci_addr;
/* Find the untranslated MEM space address */
- pp->mem_mod_base = of_read_number(parser.range -
- parser.np + na, ns);
+ pp->mem_mod_base = range.cpu_addr;
}
if (restype == 0) {
of_pci_range_to_resource(&range, np, &pp->cfg);
@@ -488,8 +482,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->cfg1_base = pp->cfg.start + pp->cfg0_size;
/* Find the untranslated configuration space address */
- pp->cfg0_mod_base = of_read_number(parser.range -
- parser.np + na, ns);
+ pp->cfg0_mod_base = range.cpu_addr;
pp->cfg1_mod_base = pp->cfg0_mod_base +
pp->cfg0_size;
}