[U-Boot] [Patch V2 1/4] pci/layerscape: add support for LS1043A PCIe LUT register access

[Scott Wood <scottwood@freescale.com>]

On Mon, 2015-11-02 at 19:15 +0800, Gong Qianyu wrote:
> diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
> index 4cee038..8471678 100644
> --- a/drivers/pci/pcie_layerscape.c
> +++ b/drivers/pci/pcie_layerscape.c
> @@ -13,6 +13,7 @@
>  #include <malloc.h>
>  #ifdef CONFIG_FSL_LAYERSCAPE
>  #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
> @@ -157,12 +153,12 @@ static int ls_pcie_link_state(struct ls_pcie *pcie)
>  
>       return 1;
>  }
> -#else
> +#elif defined(CONFIG_FSL_LAYERSCAPE)
>  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++) {
> +#ifdef CONFIG_FSL_LAYERSCAPE
>                               writel(PCIE_LCTRL0_VAL(pf, vf),
>                                      pcie->dbi + PCIE_LUT_BASE +
>                                      PCIE_LUT_LCTRL0);
> +#endif

It looks really weird to have "#ifdef CONFIG_FSL_LAYERSCAPE" inside a file 
whose name suggests is layerscape-specific.  What chips use this file that 
are not CONFIG_FSL_LAYERSCAPE?

-Scott