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authorLaurentiu TUDOR <Laurentiu.Tudor@freescale.com>2013-10-23 15:20:27 +0300
committerYork Sun <yorksun@freescale.com>2013-11-13 12:41:28 -0800
commit8f9fe660fcf99af47dc0a28b80cd4e34d403f7c5 (patch)
tree3abbb2bb9b98ecb2a7ac250f32fa9b5802a5b0d7 /arch/powerpc/cpu
parentb4125a235e2c4a490765292a95b47008036a4e0d (diff)
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powerpc/t4240: fix per pci endpoint liodn offsets
Update the code that builds the pci endpoint liodn offset list so that it doesn't overlap with other liodns and doesn't generate negative offsets like: fsl,liodn-offset-list = <0 0xffffffcd 0xffffffcf 0xffffffd1 0xffffffd3 0xffffffd5 0xffffffd7 0xffffffd9 0xffffffdb>; The update consists in adding a parameter to the function that builds the list to specify the base liodn. On PCI v2.4 use the old base = 256 and, on PCI 3.0 where some of the PCIE liodns are larger than 256, use a base = 1024. The version check is based on the PCI controller's version register. Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com> Cc: Scott Wood <scottwood@freescale.com> Cc: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu')
-rw-r--r--arch/powerpc/cpu/mpc85xx/liodn.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/liodn.c b/arch/powerpc/cpu/mpc85xx/liodn.c
index 4b00da9..19e130e 100644
--- a/arch/powerpc/cpu/mpc85xx/liodn.c
+++ b/arch/powerpc/cpu/mpc85xx/liodn.c
@@ -239,9 +239,9 @@ static void fdt_fixup_srio_liodn(void *blob, struct srio_liodn_id_table *tbl)
#endif
#define CONFIG_SYS_MAX_PCI_EPS 8
-#define CONFIG_SYS_PCI_EP_LIODN_START 256
-static void fdt_fixup_pci_liodn_offsets(void *fdt, const char *compat)
+static void fdt_fixup_pci_liodn_offsets(void *fdt, const char *compat,
+ int ep_liodn_start)
{
int off, pci_idx = 0, pci_cnt = 0, i, rc;
const uint32_t *base_liodn;
@@ -271,7 +271,7 @@ static void fdt_fixup_pci_liodn_offsets(void *fdt, const char *compat)
continue;
}
for (i = 0; i < CONFIG_SYS_MAX_PCI_EPS; i++)
- liodn_offs[i + 1] = CONFIG_SYS_PCI_EP_LIODN_START +
+ liodn_offs[i + 1] = ep_liodn_start +
i * pci_cnt + pci_idx - *base_liodn;
rc = fdt_setprop(fdt, off, "fsl,liodn-offset-list",
liodn_offs, sizeof(liodn_offs));
@@ -338,5 +338,22 @@ void fdt_fixup_liodn(void *blob)
fdt_fixup_liodn_tbl(blob, rman_liodn_tbl, rman_liodn_tbl_sz);
#endif
- fdt_fixup_pci_liodn_offsets(blob, "fsl,qoriq-pcie-v2.4");
+ ccsr_pcix_t *pcix = (ccsr_pcix_t *)CONFIG_SYS_PCIE1_ADDR;
+ int pci_ver = pcix->ipver1 & 0xffff, liodn_base = 0;
+
+ if (pci_ver >= 0x0204) {
+ if (pci_ver >= 0x0300)
+ liodn_base = 1024;
+ else
+ liodn_base = 256;
+ }
+
+ if (liodn_base) {
+ char compat[32];
+
+ sprintf(compat, "fsl,qoriq-pcie-v%d.%d",
+ (pci_ver & 0xff00) >> 8, pci_ver & 0xff);
+ fdt_fixup_pci_liodn_offsets(blob, compat, liodn_base);
+ fdt_fixup_pci_liodn_offsets(blob, "fsl,qoriq-pcie", liodn_base);
+ }
}