[U-Boot] [Patch V4 1/7] pci/layerscape: add support for LS1043A PCIe LUT register access

Wed Nov 11 10:58:34 CET 2015

From: Mingkai Hu <Mingkai.Hu at freescale.com>

The endian and base address of PEX LUT register region is different
between Chassis 2 and Chassis 3, so move the base address definition
to chassis specific header file and add pex_lut_* functions to access
LUT register.

Signed-off-by: Mingkai Hu <Mingkai.Hu at freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong at freescale.com>
---
V4:
 - Use #ifndef CONFIG_LS102XA instead of #ifdef CONFIG_FSL_LAYERSCAPE.
V3:
 - No change.
V2:
 - Fix compile errors for ls1021a.

 arch/arm/include/asm/arch-fsl-layerscape/config.h      |  2 ++
 arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h |  4 ++++
 arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h |  4 ++++
 arch/arm/include/asm/arch-fsl-layerscape/soc.h         |  8 ++++++++
 drivers/pci/pcie_layerscape.c                          | 14 +++++++-------
 5 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/arch/arm/include/asm/arch-fsl-layerscape/config.h b/arch/arm/include/asm/arch-fsl-layerscape/config.h
index 87bb937..fe361da 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/config.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/config.h
@@ -44,6 +44,7 @@
 #define CONFIG_SYS_FSL_CCSR_SCFG_LE
 #define CONFIG_SYS_FSL_ESDHC_LE
 #define CONFIG_SYS_FSL_IFC_LE
+#define CONFIG_SYS_FSL_PEX_LUT_LE
 
 #define CONFIG_SYS_MEMAC_LITTLE_ENDIAN
 
@@ -113,6 +114,7 @@
 #define CONFIG_SYS_FSL_WDOG_BE
 #define CONFIG_SYS_FSL_DSPI_BE
 #define CONFIG_SYS_FSL_QSPI_BE
+#define CONFIG_SYS_FSL_PEX_LUT_BE
 
 #define QE_MURAM_SIZE		0x6000UL
 #define MAX_QE_RISC		1
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
index d941437..f52815d 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
@@ -60,6 +60,10 @@
 #define CONFIG_SYS_PCIE1_PHYS_ADDR		0x4000000000ULL
 #define CONFIG_SYS_PCIE2_PHYS_ADDR		0x4800000000ULL
 #define CONFIG_SYS_PCIE3_PHYS_ADDR		0x5000000000ULL
+/* LUT registers */
+#define PCIE_LUT_BASE				0x10000
+#define PCIE_LUT_LCTRL0				0x7F8
+#define PCIE_LUT_DBG				0x7FC
 
 /* TZ Address Space Controller Definitions */
 #define TZASC1_BASE			0x01100000	/* as per CCSR map. */
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
index 6a70d44..e700af0 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
@@ -78,6 +78,10 @@
 #define CONFIG_SYS_PCIE2_PHYS_ADDR		0x1200000000ULL
 #define CONFIG_SYS_PCIE3_PHYS_ADDR		0x1400000000ULL
 #define CONFIG_SYS_PCIE4_PHYS_ADDR		0x1600000000ULL
+/* LUT registers */
+#define PCIE_LUT_BASE				0x80000
+#define PCIE_LUT_LCTRL0				0x7F8
+#define PCIE_LUT_DBG				0x7FC
 
 /* Device Configuration */
 #define DCFG_BASE		0x01e00000
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/soc.h b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
index 5ed456e..8691906 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/soc.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/soc.h
@@ -23,6 +23,14 @@
 #define scfg_out32(a, v)   out_be32(a, v)
 #endif
 
+#ifdef CONFIG_SYS_FSL_PEX_LUT_LE
+#define pex_lut_in32(a)       in_le32(a)
+#define pex_lut_out32(a, v)   out_le32(a, v)
+#elif defined(CONFIG_SYS_FSL_PEX_LUT_BE)
+#define pex_lut_in32(a)       in_be32(a)
+#define pex_lut_out32(a, v)   out_be32(a, v)
+#endif
+
 struct cpu_type {
 	char name[15];
 	u32 soc_ver;
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index 4cee038..43e3dc4 100644
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -11,8 +11,9 @@
 #include <asm/io.h>
 #include <errno.h>
 #include <malloc.h>
-#ifdef CONFIG_FSL_LAYERSCAPE
+#ifndef CONFIG_LS102XA
 #include <asm/arch/fdt.h>
+#include <asm/arch/soc.h>
 #endif
 
 #ifndef CONFIG_SYS_PCI_MEMORY_BUS
@@ -57,11 +58,6 @@
 #define PCIE_ATU_FUNC(x)		(((x) & 0x7) << 16)
 #define PCIE_ATU_UPPER_TARGET		0x91C
 
-/* LUT registers */
-#define PCIE_LUT_BASE		0x80000
-#define PCIE_LUT_LCTRL0		0x7F8
-#define PCIE_LUT_DBG		0x7FC
-
 #define PCIE_DBI_RO_WR_EN	0x8bc
 
 #define PCIE_LINK_CAP		0x7c
@@ -162,7 +158,7 @@ static int ls_pcie_link_state(struct ls_pcie *pcie)
 {
 	u32 state;
 
-	state = readl(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) &
+	state = pex_lut_in32(pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_DBG) &
 		LTSSM_STATE_MASK;
 	if (state < LTSSM_PCIE_L0) {
 		debug("....PCIe link error. LTSSM=0x%02x.\n", state);
@@ -466,16 +462,20 @@ static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info)
 
 		for (pf = 0; pf < PCIE_PF_NUM; pf++) {
 			for (vf = 0; vf <= PCIE_VF_NUM; vf++) {
+#ifndef CONFIG_LS102XA
 				writel(PCIE_LCTRL0_VAL(pf, vf),
 				       pcie->dbi + PCIE_LUT_BASE +
 				       PCIE_LUT_LCTRL0);
+#endif
 				ls_pcie_ep_setup_bars(pcie->dbi);
 				ls_pcie_ep_setup_atu(pcie, info);
 			}
 		}
 
 		/* Disable CFG2 */
+#ifndef CONFIG_LS102XA
 		writel(0, pcie->dbi + PCIE_LUT_BASE + PCIE_LUT_LCTRL0);
+#endif
 	} else {
 		ls_pcie_ep_setup_bars(pcie->dbi + PCIE_NO_SRIOV_BAR_BASE);
 		ls_pcie_ep_setup_atu(pcie, info);
-- 
2.1.0.27.g96db324

