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Diffstat (limited to 'arch/powerpc/sysdev/fsl_pci.c')
-rw-r--r--arch/powerpc/sysdev/fsl_pci.c114
1 files changed, 81 insertions, 33 deletions
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 682084dba19..cffe7edac85 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -54,16 +54,63 @@ static void quirk_fsl_pcie_header(struct pci_dev *dev)
return;
}
-static int __init fsl_pcie_check_link(struct pci_controller *hose)
+static int fsl_indirect_read_config(struct pci_bus *, unsigned int,
+ int, int, u32 *);
+
+static int fsl_pcie_check_link(struct pci_controller *hose)
{
- u32 val;
+ u32 val = 0;
+
+ if (hose->indirect_type & PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK) {
+ if (hose->ops->read == fsl_indirect_read_config) {
+ struct pci_bus bus;
+ bus.number = 0;
+ bus.sysdata = hose;
+ bus.ops = hose->ops;
+ indirect_read_config(&bus, 0, PCIE_LTSSM, 4, &val);
+ } else
+ early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
+ if (val < PCIE_LTSSM_L0)
+ return 1;
+ } else {
+ struct ccsr_pci __iomem *pci = hose->private_data;
+ /* for PCIe IP rev 3.0 or greater use CSR0 for link state */
+ val = (in_be32(&pci->pex_csr0) & PEX_CSR0_LTSSM_MASK)
+ >> PEX_CSR0_LTSSM_SHIFT;
+ if (val != PEX_CSR0_LTSSM_L0)
+ return 1;
+ }
- early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val);
- if (val < PCIE_LTSSM_L0)
- return 1;
return 0;
}
+static int fsl_indirect_read_config(struct pci_bus *bus, unsigned int devfn,
+ int offset, int len, u32 *val)
+{
+ struct pci_controller *hose = pci_bus_to_host(bus);
+
+ if (fsl_pcie_check_link(hose))
+ hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+ else
+ hose->indirect_type &= ~PPC_INDIRECT_TYPE_NO_PCIE_LINK;
+
+ return indirect_read_config(bus, devfn, offset, len, val);
+}
+
+static struct pci_ops fsl_indirect_pci_ops =
+{
+ .read = fsl_indirect_read_config,
+ .write = indirect_write_config,
+};
+
+static void __init fsl_setup_indirect_pci(struct pci_controller* hose,
+ resource_size_t cfg_addr,
+ resource_size_t cfg_data, u32 flags)
+{
+ setup_indirect_pci(hose, cfg_addr, cfg_data, flags);
+ hose->ops = &fsl_indirect_pci_ops;
+}
+
#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
#define MAX_PHYS_ADDR_BITS 40
@@ -106,7 +153,7 @@ static int setup_one_atmu(struct ccsr_pci __iomem *pci,
flags |= 0x10000000; /* enable relaxed ordering */
for (i = 0; size > 0; i++) {
- unsigned int bits = min(__ilog2(size),
+ unsigned int bits = min(ilog2(size),
__ffs(pci_addr | phys_addr));
if (index + i >= 5)
@@ -126,10 +173,9 @@ static int setup_one_atmu(struct ccsr_pci __iomem *pci,
}
/* atmu setup for fsl pci/pcie controller */
-static void setup_pci_atmu(struct pci_controller *hose,
- struct resource *rsrc)
+static void setup_pci_atmu(struct pci_controller *hose)
{
- struct ccsr_pci __iomem *pci;
+ struct ccsr_pci __iomem *pci = hose->private_data;
int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4;
u64 mem, sz, paddr_hi = 0;
u64 paddr_lo = ULLONG_MAX;
@@ -140,15 +186,6 @@ static void setup_pci_atmu(struct pci_controller *hose,
const u64 *reg;
int len;
- pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
- (u64)rsrc->start, (u64)resource_size(rsrc));
-
- pci = ioremap(rsrc->start, resource_size(rsrc));
- if (!pci) {
- dev_err(hose->parent, "Unable to map ATMU registers\n");
- return;
- }
-
if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
if (in_be32(&pci->block_rev1) >= PCIE_IP_REV_2_2) {
win_idx = 2;
@@ -196,7 +233,7 @@ static void setup_pci_atmu(struct pci_controller *hose,
out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12));
/* Enable, IO R/W */
out_be32(&pci->pow[j].powar, 0x80088000
- | (__ilog2(hose->io_resource.end
+ | (ilog2(hose->io_resource.end
- hose->io_resource.start + 1) - 1));
}
}
@@ -207,12 +244,12 @@ static void setup_pci_atmu(struct pci_controller *hose,
if (paddr_hi == paddr_lo) {
pr_err("%s: No outbound window space\n", name);
- goto out;
+ return;
}
if (paddr_lo == 0) {
pr_err("%s: No space for inbound window\n", name);
- goto out;
+ return;
}
/* setup PCSRBAR/PEXCSRBAR */
@@ -261,7 +298,7 @@ static void setup_pci_atmu(struct pci_controller *hose,
}
sz = min(mem, paddr_lo);
- mem_log = __ilog2_u64(sz);
+ mem_log = ilog2(sz);
/* PCIe can overmap inbound & outbound since RX & TX are separated */
if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
@@ -290,7 +327,7 @@ static void setup_pci_atmu(struct pci_controller *hose,
* SWIOTLB and access the full range of memory
*/
if (sz != mem) {
- mem_log = __ilog2_u64(mem);
+ mem_log = ilog2(mem);
/* Size window up if we dont fit in exact power-of-2 */
if ((1ull << mem_log) != mem)
@@ -327,7 +364,7 @@ static void setup_pci_atmu(struct pci_controller *hose,
sz -= 1ull << mem_log;
if (sz) {
- mem_log = __ilog2_u64(sz);
+ mem_log = ilog2(sz);
piwar |= (mem_log - 1);
out_be32(&pci->piw[win_idx].pitar, paddr >> 12);
@@ -358,9 +395,6 @@ static void setup_pci_atmu(struct pci_controller *hose,
pr_info("%s: DMA window size is 0x%llx\n", name,
(u64)hose->dma_window_size);
}
-
-out:
- iounmap(pci);
}
static void __init setup_pci_cmd(struct pci_controller *hose)
@@ -429,6 +463,7 @@ int __init fsl_add_bridge(struct platform_device *pdev, int is_primary)
const int *bus_range;
u8 hdr_type, progif;
struct device_node *dev;
+ struct ccsr_pci __iomem *pci;
dev = pdev->dev.of_node;
@@ -461,8 +496,18 @@ int __init fsl_add_bridge(struct platform_device *pdev, int is_primary)
hose->first_busno = bus_range ? bus_range[0] : 0x0;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
- setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
- PPC_INDIRECT_TYPE_BIG_ENDIAN);
+ pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n",
+ (u64)rsrc.start, (u64)resource_size(&rsrc));
+
+ pci = hose->private_data = ioremap(rsrc.start, resource_size(&rsrc));
+ if (!hose->private_data)
+ goto no_bridge;
+
+ fsl_setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
+ PPC_INDIRECT_TYPE_BIG_ENDIAN);
+
+ if (in_be32(&pci->block_rev1) < PCIE_IP_REV_3_0)
+ hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK;
if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) {
/* For PCIE read HEADER_TYPE to identify controler mode */
@@ -500,11 +545,12 @@ int __init fsl_add_bridge(struct platform_device *pdev, int is_primary)
pci_process_bridge_OF_ranges(hose, dev, is_primary);
/* Setup PEX window registers */
- setup_pci_atmu(hose, &rsrc);
+ setup_pci_atmu(hose);
return 0;
no_bridge:
+ iounmap(hose->private_data);
/* unmap cfg_data & cfg_addr separately if not on same page */
if (((unsigned long)hose->cfg_data & PAGE_MASK) !=
((unsigned long)hose->cfg_addr & PAGE_MASK))
@@ -681,6 +727,7 @@ static int __init mpc83xx_pcie_setup(struct pci_controller *hose,
WARN_ON(hose->dn->data);
hose->dn->data = pcie;
hose->ops = &mpc83xx_pcie_ops;
+ hose->indirect_type |= PPC_INDIRECT_TYPE_FSL_CFG_REG_LINK;
out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0);
out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0);
@@ -766,8 +813,8 @@ int __init mpc83xx_add_bridge(struct device_node *dev)
if (ret)
goto err0;
} else {
- setup_indirect_pci(hose, rsrc_cfg.start,
- rsrc_cfg.start + 4, 0);
+ fsl_setup_indirect_pci(hose, rsrc_cfg.start,
+ rsrc_cfg.start + 4, 0);
}
printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. "
@@ -836,6 +883,7 @@ static const struct of_device_id pci_ids[] = {
{ .compatible = "fsl,qoriq-pcie-v2.2", },
{ .compatible = "fsl,qoriq-pcie-v2.3", },
{ .compatible = "fsl,qoriq-pcie-v2.4", },
+ { .compatible = "fsl,qoriq-pcie-v3.0", },
/*
* The following entries are for compatibility with older device
@@ -927,7 +975,7 @@ static int fsl_pci_resume(struct device *dev)
return -ENODEV;
}
- setup_pci_atmu(hose, &pci_rsrc);
+ setup_pci_atmu(hose);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 18:06:56 +0000