This patch reverts commit f4c55c5a3f7f ("PCI: designware: Program ATU with
untranslated address") based on 1/6 in this series. we delete *_mod_base in
pcie-designware. This was discussed in [1]
dw_pcie_setup which is called in pci_common_init_dev uses io_base, however,
io_base had been modified in dra7xx_pcie_host_init in dw_pcie_host_init. So an
io_base_tmp is added in struct pcie_port to store original io_base value. It
will be deleted in "PCI: designware: Add ARM64 support" in which dw_pcie_setup
will be removed.
[1] http://www.spinics.net/lists/arm-kernel/msg436779.html
Signed-off-by: Zhou Wang <wangzhou1@xxxxxxxxxxxxx>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Tested-by: James Morse <james.morse@xxxxxxx>
Tested-by: Gabriel Fernandez <gabriel.fernandez@xxxxxx>
Tested-by: Minghuan Lian <Minghuan.Lian@xxxxxxxxxxxxx>
Acked-by: Pratyush Anand <pratyush.anand@xxxxxxxxx>
---
drivers/pci/host/pci-dra7xx.c | 8 ++++----
drivers/pci/host/pcie-designware.c | 41 ++++++++++----------------------------
drivers/pci/host/pcie-designware.h | 5 +----
3 files changed, 16 insertions(+), 38 deletions(-)
diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c
index 0b4847a..8c36880 100644
--- a/drivers/pci/host/pci-dra7xx.c
+++ b/drivers/pci/host/pci-dra7xx.c
@@ -153,10 +153,10 @@ 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;
+ pp->io_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->mem_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->cfg0_base &= DRA7XX_CPU_TO_BUS_ADDR;
+ pp->cfg1_base &= DRA7XX_CPU_TO_BUS_ADDR;
dra7xx_pcie_establish_link(pp);
if (IS_ENABLED(CONFIG_PCI_MSI))
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 75338a6..4e2dcd4 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -365,11 +365,8 @@ 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, ns;
- const __be32 *addrp;
- int i, index, ret;
-
- ns = of_n_size_cells(np);
+ u32 val;
+ int i, ret;
cfg_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "config");
if (cfg_res) {
@@ -377,12 +374,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->cfg1_size = resource_size(cfg_res)/2;
pp->cfg0_base = cfg_res->start;
pp->cfg1_base = cfg_res->start + pp->cfg0_size;
-
- /* Find the untranslated configuration space address */
- index = of_property_match_string(np, "reg-names", "config");
- addrp = of_get_address(np, index, NULL, NULL);
- pp->cfg0_mod_base = of_read_number(addrp, ns);
- pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size;
} else if (!pp->va_cfg0_base) {
dev_err(pp->dev, "missing *config* reg space\n");
}
@@ -409,18 +400,13 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->io_size = resource_size(&pp->io);
pp->io_bus_addr = range.pci_addr;
pp->io_base = range.cpu_addr;
-
- /* Find the untranslated IO space address */
- pp->io_mod_base = range.cpu_addr;
+ pp->io_base_tmp = range.cpu_addr;
}
if (restype == IORESOURCE_MEM) {
of_pci_range_to_resource(&range, np, &pp->mem);
pp->mem.name = "MEM";
pp->mem_size = resource_size(&pp->mem);
pp->mem_bus_addr = range.pci_addr;
-
- /* Find the untranslated MEM space address */
- pp->mem_mod_base = range.cpu_addr;
}
if (restype == 0) {
of_pci_range_to_resource(&range, np, &pp->cfg);
@@ -428,11 +414,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
pp->cfg1_size = resource_size(&pp->cfg)/2;
pp->cfg0_base = pp->cfg.start;
pp->cfg1_base = pp->cfg.start + pp->cfg0_size;
-
- /* Find the untranslated configuration space address */
- pp->cfg0_mod_base = range.cpu_addr;
- pp->cfg1_mod_base = pp->cfg0_mod_base +
- pp->cfg0_size;
}
}
@@ -504,7 +485,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
if (!pp->ops->rd_other_conf)
dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX1,
- PCIE_ATU_TYPE_MEM, pp->mem_mod_base,
+ PCIE_ATU_TYPE_MEM, pp->mem_base,
pp->mem_bus_addr, pp->mem_size);
dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0);
@@ -542,12 +523,12 @@ static int dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
if (bus->parent->number == pp->root_bus_nr) {
type = PCIE_ATU_TYPE_CFG0;
- cpu_addr = pp->cfg0_mod_base;
+ cpu_addr = pp->cfg0_base;
cfg_size = pp->cfg0_size;
va_cfg_base = pp->va_cfg0_base;
} else {
type = PCIE_ATU_TYPE_CFG1;
- cpu_addr = pp->cfg1_mod_base;
+ cpu_addr = pp->cfg1_base;
cfg_size = pp->cfg1_size;
va_cfg_base = pp->va_cfg1_base;
}
@@ -557,7 +538,7 @@ static int dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
busdev, cfg_size);
ret = dw_pcie_cfg_read(va_cfg_base + address, where, size, val);
dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0,
- PCIE_ATU_TYPE_IO, pp->io_mod_base,
+ PCIE_ATU_TYPE_IO, pp->io_base,
pp->io_bus_addr, pp->io_size);
return ret;
@@ -577,12 +558,12 @@ static int dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
if (bus->parent->number == pp->root_bus_nr) {
type = PCIE_ATU_TYPE_CFG0;
- cpu_addr = pp->cfg0_mod_base;
+ cpu_addr = pp->cfg0_base;
cfg_size = pp->cfg0_size;
va_cfg_base = pp->va_cfg0_base;
} else {
type = PCIE_ATU_TYPE_CFG1;
- cpu_addr = pp->cfg1_mod_base;
+ cpu_addr = pp->cfg1_base;
cfg_size = pp->cfg1_size;
va_cfg_base = pp->va_cfg1_base;
}
@@ -592,7 +573,7 @@ static int dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
busdev, cfg_size);
ret = dw_pcie_cfg_write(va_cfg_base + address, where, size, val);
dw_pcie_prog_outbound_atu(pp, PCIE_ATU_REGION_INDEX0,
- PCIE_ATU_TYPE_IO, pp->io_mod_base,
+ PCIE_ATU_TYPE_IO, pp->io_base,
pp->io_bus_addr, pp->io_size);
return ret;
@@ -680,7 +661,7 @@ static int dw_pcie_setup(int nr, struct pci_sys_data *sys)
if (global_io_offset < SZ_1M && pp->io_size > 0) {
sys->io_offset = global_io_offset - pp->io_bus_addr;
- pci_ioremap_io(global_io_offset, pp->io_base);
+ pci_ioremap_io(global_io_offset, pp->io_base_tmp);
global_io_offset += SZ_64K;
pci_add_resource_offset(&sys->resources, &pp->io,
sys->io_offset);
diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h
index d0bbd27..2dbf649 100644
--- a/drivers/pci/host/pcie-designware.h
+++ b/drivers/pci/host/pcie-designware.h
@@ -27,19 +27,16 @@ struct pcie_port {
u8 root_bus_nr;
void __iomem *dbi_base;
u64 cfg0_base;
- u64 cfg0_mod_base;
void __iomem *va_cfg0_base;
u32 cfg0_size;
u64 cfg1_base;
- u64 cfg1_mod_base;
void __iomem *va_cfg1_base;
u32 cfg1_size;
u64 io_base;
- u64 io_mod_base;
+ u64 io_base_tmp;
phys_addr_t io_bus_addr;
u32 io_size;
u64 mem_base;
- u64 mem_mod_base;
phys_addr_t mem_bus_addr;
u32 mem_size;
struct resource cfg;
--
1.9.1
--
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