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pci/layerscape: add support for LS1043A PCIe LUT register access

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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@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Mingkai Hu
2015-11-11 17:58:34 +08:00
committed by York Sun
parent 06b5301043
commit af523a0d56
5 changed files with 25 additions and 7 deletions
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14
drivers/pci/pcie_layerscape.c
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@@ -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);