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@@ -23,15 +23,10 @@
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#include "cns3xxx.h"
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#include "cns3xxx.h"
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#include "core.h"
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#include "core.h"
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-enum cns3xxx_access_type {
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- CNS3XXX_HOST_TYPE = 0,
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- CNS3XXX_CFG0_TYPE,
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- CNS3XXX_CFG1_TYPE,
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- CNS3XXX_NUM_ACCESS_TYPES,
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-};
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-
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struct cns3xxx_pcie {
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struct cns3xxx_pcie {
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- struct map_desc cfg_bases[CNS3XXX_NUM_ACCESS_TYPES];
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+ void __iomem *host_regs; /* PCI config registers for host bridge */
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+ void __iomem *cfg0_regs; /* PCI Type 0 config registers */
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+ void __iomem *cfg1_regs; /* PCI Type 1 config registers */
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unsigned int irqs[2];
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unsigned int irqs[2];
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struct resource res_io;
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struct resource res_io;
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struct resource res_mem;
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struct resource res_mem;
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@@ -66,7 +61,6 @@ static void __iomem *cns3xxx_pci_cfg_base(struct pci_bus *bus,
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int busno = bus->number;
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int busno = bus->number;
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int slot = PCI_SLOT(devfn);
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int slot = PCI_SLOT(devfn);
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int offset;
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int offset;
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- enum cns3xxx_access_type type;
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void __iomem *base;
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void __iomem *base;
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/* If there is no link, just show the CNS PCI bridge. */
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/* If there is no link, just show the CNS PCI bridge. */
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@@ -78,17 +72,21 @@ static void __iomem *cns3xxx_pci_cfg_base(struct pci_bus *bus,
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* we still want to access it. For this to work, we must place
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* we still want to access it. For this to work, we must place
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* the first device on the same bus as the CNS PCI bridge.
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* the first device on the same bus as the CNS PCI bridge.
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*/
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*/
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- if (busno == 0) {
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- if (slot > 1)
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- return NULL;
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- type = slot;
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- } else {
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- type = CNS3XXX_CFG1_TYPE;
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- }
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+ if (busno == 0) { /* directly connected PCIe bus */
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+ switch (slot) {
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+ case 0: /* host bridge device, function 0 only */
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+ base = cnspci->host_regs;
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+ break;
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+ case 1: /* directly connected device */
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+ base = cnspci->cfg0_regs;
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+ break;
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+ default:
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+ return NULL; /* no such device */
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+ }
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+ } else /* remote PCI bus */
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+ base = cnspci->cfg1_regs;
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- base = (void __iomem *)cnspci->cfg_bases[type].virtual;
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offset = ((busno & 0xf) << 20) | (devfn << 12) | (where & 0xffc);
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offset = ((busno & 0xf) << 20) | (devfn << 12) | (where & 0xffc);
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-
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return base + offset;
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return base + offset;
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}
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}
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@@ -180,36 +178,19 @@ static int cns3xxx_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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static struct cns3xxx_pcie cns3xxx_pcie[] = {
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static struct cns3xxx_pcie cns3xxx_pcie[] = {
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[0] = {
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[0] = {
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- .cfg_bases = {
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- [CNS3XXX_HOST_TYPE] = {
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- .virtual = CNS3XXX_PCIE0_HOST_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE0_HOST_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- [CNS3XXX_CFG0_TYPE] = {
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- .virtual = CNS3XXX_PCIE0_CFG0_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG0_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- [CNS3XXX_CFG1_TYPE] = {
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- .virtual = CNS3XXX_PCIE0_CFG1_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG1_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- },
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+ .host_regs = (void __iomem *)CNS3XXX_PCIE0_HOST_BASE_VIRT,
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+ .cfg0_regs = (void __iomem *)CNS3XXX_PCIE0_CFG0_BASE_VIRT,
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+ .cfg1_regs = (void __iomem *)CNS3XXX_PCIE0_CFG1_BASE_VIRT,
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.res_io = {
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.res_io = {
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.name = "PCIe0 I/O space",
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.name = "PCIe0 I/O space",
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.start = CNS3XXX_PCIE0_IO_BASE,
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.start = CNS3XXX_PCIE0_IO_BASE,
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- .end = CNS3XXX_PCIE0_IO_BASE + SZ_16M - 1,
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+ .end = CNS3XXX_PCIE0_CFG0_BASE - 1, /* 16 MiB */
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.flags = IORESOURCE_IO,
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.flags = IORESOURCE_IO,
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},
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},
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.res_mem = {
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.res_mem = {
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.name = "PCIe0 non-prefetchable",
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.name = "PCIe0 non-prefetchable",
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.start = CNS3XXX_PCIE0_MEM_BASE,
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.start = CNS3XXX_PCIE0_MEM_BASE,
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- .end = CNS3XXX_PCIE0_MEM_BASE + SZ_16M - 1,
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+ .end = CNS3XXX_PCIE0_HOST_BASE - 1, /* 176 MiB */
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.flags = IORESOURCE_MEM,
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.flags = IORESOURCE_MEM,
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},
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},
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.irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
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.irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
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@@ -222,36 +203,19 @@ static struct cns3xxx_pcie cns3xxx_pcie[] = {
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},
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},
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},
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},
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[1] = {
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[1] = {
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- .cfg_bases = {
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- [CNS3XXX_HOST_TYPE] = {
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- .virtual = CNS3XXX_PCIE1_HOST_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE1_HOST_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- [CNS3XXX_CFG0_TYPE] = {
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- .virtual = CNS3XXX_PCIE1_CFG0_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG0_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- [CNS3XXX_CFG1_TYPE] = {
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- .virtual = CNS3XXX_PCIE1_CFG1_BASE_VIRT,
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- .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG1_BASE),
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- .length = SZ_16M,
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- .type = MT_DEVICE,
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- },
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- },
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+ .host_regs = (void __iomem *)CNS3XXX_PCIE1_HOST_BASE_VIRT,
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+ .cfg0_regs = (void __iomem *)CNS3XXX_PCIE1_CFG0_BASE_VIRT,
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+ .cfg1_regs = (void __iomem *)CNS3XXX_PCIE1_CFG1_BASE_VIRT,
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.res_io = {
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.res_io = {
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.name = "PCIe1 I/O space",
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.name = "PCIe1 I/O space",
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.start = CNS3XXX_PCIE1_IO_BASE,
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.start = CNS3XXX_PCIE1_IO_BASE,
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- .end = CNS3XXX_PCIE1_IO_BASE + SZ_16M - 1,
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+ .end = CNS3XXX_PCIE1_CFG0_BASE - 1, /* 16 MiB */
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.flags = IORESOURCE_IO,
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.flags = IORESOURCE_IO,
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},
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},
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.res_mem = {
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.res_mem = {
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.name = "PCIe1 non-prefetchable",
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.name = "PCIe1 non-prefetchable",
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.start = CNS3XXX_PCIE1_MEM_BASE,
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.start = CNS3XXX_PCIE1_MEM_BASE,
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- .end = CNS3XXX_PCIE1_MEM_BASE + SZ_16M - 1,
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+ .end = CNS3XXX_PCIE1_HOST_BASE - 1, /* 176 MiB */
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.flags = IORESOURCE_MEM,
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.flags = IORESOURCE_MEM,
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},
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},
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.irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
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.irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
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@@ -307,18 +271,15 @@ static void __init cns3xxx_pcie_hw_init(struct cns3xxx_pcie *cnspci)
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.ops = &cns3xxx_pcie_ops,
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.ops = &cns3xxx_pcie_ops,
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.sysdata = &sd,
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.sysdata = &sd,
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};
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};
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- u32 io_base = cnspci->res_io.start >> 16;
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- u32 mem_base = cnspci->res_mem.start >> 16;
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- u32 host_base = cnspci->cfg_bases[CNS3XXX_HOST_TYPE].pfn;
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- u32 cfg0_base = cnspci->cfg_bases[CNS3XXX_CFG0_TYPE].pfn;
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+ u16 mem_base = cnspci->res_mem.start >> 16;
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+ u16 mem_limit = cnspci->res_mem.end >> 16;
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+ u16 io_base = cnspci->res_io.start >> 16;
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+ u16 io_limit = cnspci->res_io.end >> 16;
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u32 devfn = 0;
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u32 devfn = 0;
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u8 tmp8;
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u8 tmp8;
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u16 pos;
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u16 pos;
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u16 dc;
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u16 dc;
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- host_base = (__pfn_to_phys(host_base) - 1) >> 16;
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- cfg0_base = (__pfn_to_phys(cfg0_base) - 1) >> 16;
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-
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pci_bus_write_config_byte(&bus, devfn, PCI_PRIMARY_BUS, 0);
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pci_bus_write_config_byte(&bus, devfn, PCI_PRIMARY_BUS, 0);
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pci_bus_write_config_byte(&bus, devfn, PCI_SECONDARY_BUS, 1);
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pci_bus_write_config_byte(&bus, devfn, PCI_SECONDARY_BUS, 1);
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pci_bus_write_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, 1);
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pci_bus_write_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, 1);
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@@ -328,9 +289,9 @@ static void __init cns3xxx_pcie_hw_init(struct cns3xxx_pcie *cnspci)
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pci_bus_read_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, &tmp8);
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pci_bus_read_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, &tmp8);
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pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_BASE, mem_base);
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pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_BASE, mem_base);
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- pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_LIMIT, host_base);
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+ pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_LIMIT, mem_limit);
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pci_bus_write_config_word(&bus, devfn, PCI_IO_BASE_UPPER16, io_base);
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pci_bus_write_config_word(&bus, devfn, PCI_IO_BASE_UPPER16, io_base);
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- pci_bus_write_config_word(&bus, devfn, PCI_IO_LIMIT_UPPER16, cfg0_base);
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+ pci_bus_write_config_word(&bus, devfn, PCI_IO_LIMIT_UPPER16, io_limit);
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if (!cnspci->linked)
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if (!cnspci->linked)
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return;
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return;
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@@ -368,8 +329,6 @@ static int __init cns3xxx_pcie_init(void)
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"imprecise external abort");
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"imprecise external abort");
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for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
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for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
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- iotable_init(cns3xxx_pcie[i].cfg_bases,
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- ARRAY_SIZE(cns3xxx_pcie[i].cfg_bases));
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cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_PCIE(i));
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cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_PCIE(i));
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cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i));
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cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i));
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cns3xxx_pcie_check_link(&cns3xxx_pcie[i]);
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cns3xxx_pcie_check_link(&cns3xxx_pcie[i]);
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