[U-Boot] [PATCH] powerpc/t4240: fix per pci endpoint liodn offsets

[Laurentiu Tudor]

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 at freescale.com>
Cc: Scott Wood <scottwood at freescale.com>
Cc: York Sun <yorksun at freescale.com>
---
Based on: git://git.denx.de/u-boot-mpc85xx.git master

 arch/powerpc/cpu/mpc85xx/liodn.c      |   25 +++++++++++++++++++++----
 arch/powerpc/include/asm/immap_85xx.h |    4 +++-
 2 files changed, 24 insertions(+), 5 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);
+	}
 }
diff --git a/arch/powerpc/include/asm/immap_85xx.h b/arch/powerpc/include/asm/immap_85xx.h
index e516e07..a087b8c 100644
--- a/arch/powerpc/include/asm/immap_85xx.h
+++ b/arch/powerpc/include/asm/immap_85xx.h
@@ -282,7 +282,9 @@ typedef struct ccsr_pcix {
 	u32	int_ack;	/* PCIX IRQ Acknowledge */
 	u8	res000c[52];
 	u32	liodn_base;	/* PCIX LIODN base register */
-	u8	res0044[3004];
+	u8	res0044[2996];
+	u32	ipver1;		/* PCIX IP block revision register 1 */
+	u32	ipver2;		/* PCIX IP block revision register 2 */
 	u32	potar0;		/* PCIX Outbound Transaction Addr 0 */
 	u32	potear0;	/* PCIX Outbound Translation Extended Addr 0 */
 	u32	powbar0;	/* PCIX Outbound Window Base Addr 0 */
-- 
1.7.6.5