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PCI: designware: Move calculation of bus addresses to DRA7xx 

Commit f4c55c5a3f ("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>
This commit is contained in:
Gabriele Paoloni 2015-10-29 19:56:51 -05:00 committed by Bjorn Helgaas
parent 907fce0902
commit 883cc17cb1
2 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/pci/host/pci-dra7xx.c
View File

@ -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);

15
drivers/pci/host/pcie-designware.c
View File

@ -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;
}