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Merge branch 'pci/host-designware' into next

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* pci/host-designware:
  PCI: designware: Fix I/O transfers by using CPU (not realio) address
  PCI: designware: Add dw_pcie prefix before cfg_read/write
  PCI: designware: Fix missing MSI IRQs
This commit is contained in:
Bjorn Helgaas 2013-12-20 12:41:01 -07:00
commit 9dc1d43ff9
3 changed files with 24 additions and 17 deletions
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5
drivers/pci/host/pci-exynos.c
View file

@ -468,7 +468,7 @@ static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
int ret;
exynos_pcie_sideband_dbi_r_mode(pp, true);
ret = cfg_read(pp->dbi_base + (where & ~0x3), where, size, val);
ret = dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where, size, val);
exynos_pcie_sideband_dbi_r_mode(pp, false);
return ret;
}
@ -479,7 +479,8 @@ static int exynos_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
int ret;
exynos_pcie_sideband_dbi_w_mode(pp, true);
ret = cfg_write(pp->dbi_base + (where & ~0x3), where, size, val);
ret = dw_pcie_cfg_write(pp->dbi_base + (where & ~0x3),
where, size, val);
exynos_pcie_sideband_dbi_w_mode(pp, false);
return ret;
}

32
drivers/pci/host/pcie-designware.c
View file

@ -74,7 +74,7 @@ static inline struct pcie_port *sys_to_pcie(struct pci_sys_data *sys)
return sys->private_data;
}
int cfg_read(void __iomem *addr, int where, int size, u32 *val)
int dw_pcie_cfg_read(void __iomem *addr, int where, int size, u32 *val)
{
*val = readl(addr);
@ -88,7 +88,7 @@ int cfg_read(void __iomem *addr, int where, int size, u32 *val)
return PCIBIOS_SUCCESSFUL;
}
int cfg_write(void __iomem *addr, int where, int size, u32 val)
int dw_pcie_cfg_write(void __iomem *addr, int where, int size, u32 val)
{
if (size == 4)
writel(val, addr);
@ -126,7 +126,8 @@ static int dw_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
if (pp->ops->rd_own_conf)
ret = pp->ops->rd_own_conf(pp, where, size, val);
else
ret = cfg_read(pp->dbi_base + (where & ~0x3), where, size, val);
ret = dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
size, val);
return ret;
}
@ -139,8 +140,8 @@ static int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
if (pp->ops->wr_own_conf)
ret = pp->ops->wr_own_conf(pp, where, size, val);
else
ret = cfg_write(pp->dbi_base + (where & ~0x3), where, size,
val);
ret = dw_pcie_cfg_write(pp->dbi_base + (where & ~0x3), where,
size, val);
return ret;
}
@ -167,11 +168,13 @@ void dw_handle_msi_irq(struct pcie_port *pp)
while ((pos = find_next_bit(&val, 32, pos)) != 32) {
irq = irq_find_mapping(pp->irq_domain,
i * 32 + pos);
dw_pcie_wr_own_conf(pp,
PCIE_MSI_INTR0_STATUS + i * 12,
4, 1 << pos);
generic_handle_irq(irq);
pos++;
}
}
dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_STATUS + i * 12, 4, val);
}
}
@ -415,6 +418,7 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
+ global_io_offset);
pp->config.io_size = resource_size(&pp->io);
pp->config.io_bus_addr = range.pci_addr;
pp->io_base = range.cpu_addr;
}
if (restype == IORESOURCE_MEM) {
of_pci_range_to_resource(&range, np, &pp->mem);
@ -440,7 +444,6 @@ int __init dw_pcie_host_init(struct pcie_port *pp)
pp->cfg0_base = pp->cfg.start;
pp->cfg1_base = pp->cfg.start + pp->config.cfg0_size;
pp->io_base = pp->io.start;
pp->mem_base = pp->mem.start;
pp->va_cfg0_base = devm_ioremap(pp->dev, pp->cfg0_base,
@ -572,11 +575,13 @@ static int dw_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,
if (bus->parent->number == pp->root_bus_nr) {
dw_pcie_prog_viewport_cfg0(pp, busdev);
ret = cfg_read(pp->va_cfg0_base + address, where, size, val);
ret = dw_pcie_cfg_read(pp->va_cfg0_base + address, where, size,
val);
dw_pcie_prog_viewport_mem_outbound(pp);
} else {
dw_pcie_prog_viewport_cfg1(pp, busdev);
ret = cfg_read(pp->va_cfg1_base + address, where, size, val);
ret = dw_pcie_cfg_read(pp->va_cfg1_base + address, where, size,
val);
dw_pcie_prog_viewport_io_outbound(pp);
}
@ -595,18 +600,19 @@ static int dw_pcie_wr_other_conf(struct pcie_port *pp, struct pci_bus *bus,
if (bus->parent->number == pp->root_bus_nr) {
dw_pcie_prog_viewport_cfg0(pp, busdev);
ret = cfg_write(pp->va_cfg0_base + address, where, size, val);
ret = dw_pcie_cfg_write(pp->va_cfg0_base + address, where, size,
val);
dw_pcie_prog_viewport_mem_outbound(pp);
} else {
dw_pcie_prog_viewport_cfg1(pp, busdev);
ret = cfg_write(pp->va_cfg1_base + address, where, size, val);
ret = dw_pcie_cfg_write(pp->va_cfg1_base + address, where, size,
val);
dw_pcie_prog_viewport_io_outbound(pp);
}
return ret;
}
static int dw_pcie_valid_config(struct pcie_port *pp,
struct pci_bus *bus, int dev)
{
@ -700,7 +706,7 @@ static int dw_pcie_setup(int nr, struct pci_sys_data *sys)
if (global_io_offset < SZ_1M && pp->config.io_size > 0) {
sys->io_offset = global_io_offset - pp->config.io_bus_addr;
pci_ioremap_io(sys->io_offset, pp->io.start);
pci_ioremap_io(global_io_offset, pp->io_base);
global_io_offset += SZ_64K;
pci_add_resource_offset(&sys->resources, &pp->io,
sys->io_offset);

4
drivers/pci/host/pcie-designware.h
View file

@ -66,8 +66,8 @@ struct pcie_host_ops {
void (*host_init)(struct pcie_port *pp);
};
int cfg_read(void __iomem *addr, int where, int size, u32 *val);
int cfg_write(void __iomem *addr, int where, int size, u32 val);
int dw_pcie_cfg_read(void __iomem *addr, int where, int size, u32 *val);
int dw_pcie_cfg_write(void __iomem *addr, int where, int size, u32 val);
void dw_handle_msi_irq(struct pcie_port *pp);
void dw_pcie_msi_init(struct pcie_port *pp);
int dw_pcie_link_up(struct pcie_port *pp);