On Tue, Oct 17, 2023 at 03:31:44PM -0400, Frank Li wrote:
> 'pf' and 'lut' is just difference name in difference chips, but basic it is
> a MMIO base address plus an offset.
>
> Rename it to avoid duplicate pf_* and lut_* in driver.
>
"pci-layerscape-ep.c" uses "ls_lut_" prefix and now you are using "pf_lut_". May
I know the difference between these two? Can we just use a common name?
- Mani
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
>
> Notes:
> change from v1 to v3
> - new patch at v3
>
> drivers/pci/controller/dwc/pci-layerscape.c | 34 ++++++++++-----------
> 1 file changed, 17 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
> index 6f47cfe146c44..4b663b20d8612 100644
> --- a/drivers/pci/controller/dwc/pci-layerscape.c
> +++ b/drivers/pci/controller/dwc/pci-layerscape.c
> @@ -46,7 +46,7 @@
> #define LS_PCIE_DRV_SCFG BIT(0)
>
> struct ls_pcie_drvdata {
> - const u32 pf_off;
> + const u32 pf_lut_off;
> const struct dw_pcie_host_ops *ops;
> int (*exit_from_l2)(struct dw_pcie_rp *pp);
> int flags;
> @@ -56,13 +56,13 @@ struct ls_pcie_drvdata {
> struct ls_pcie {
> struct dw_pcie *pci;
> const struct ls_pcie_drvdata *drvdata;
> - void __iomem *pf_base;
> + void __iomem *pf_lut_base;
> struct regmap *scfg;
> int index;
> bool big_endian;
> };
>
> -#define ls_pcie_pf_readl_addr(addr) ls_pcie_pf_readl(pcie, addr)
> +#define ls_pcie_pf_lut_readl_addr(addr) ls_pcie_pf_lut_readl(pcie, addr)
> #define to_ls_pcie(x) dev_get_drvdata((x)->dev)
>
> static bool ls_pcie_is_bridge(struct ls_pcie *pcie)
> @@ -103,20 +103,20 @@ static void ls_pcie_fix_error_response(struct ls_pcie *pcie)
> iowrite32(PCIE_ABSERR_SETTING, pci->dbi_base + PCIE_ABSERR);
> }
>
> -static u32 ls_pcie_pf_readl(struct ls_pcie *pcie, u32 off)
> +static u32 ls_pcie_pf_lut_readl(struct ls_pcie *pcie, u32 off)
> {
> if (pcie->big_endian)
> - return ioread32be(pcie->pf_base + off);
> + return ioread32be(pcie->pf_lut_base + off);
>
> - return ioread32(pcie->pf_base + off);
> + return ioread32(pcie->pf_lut_base + off);
> }
>
> -static void ls_pcie_pf_writel(struct ls_pcie *pcie, u32 off, u32 val)
> +static void ls_pcie_pf_lut_writel(struct ls_pcie *pcie, u32 off, u32 val)
> {
> if (pcie->big_endian)
> - iowrite32be(val, pcie->pf_base + off);
> + iowrite32be(val, pcie->pf_lut_base + off);
> else
> - iowrite32(val, pcie->pf_base + off);
> + iowrite32(val, pcie->pf_lut_base + off);
> }
>
> static void ls_pcie_send_turnoff_msg(struct dw_pcie_rp *pp)
> @@ -126,11 +126,11 @@ static void ls_pcie_send_turnoff_msg(struct dw_pcie_rp *pp)
> u32 val;
> int ret;
>
> - val = ls_pcie_pf_readl(pcie, LS_PCIE_PF_MCR);
> + val = ls_pcie_pf_lut_readl(pcie, LS_PCIE_PF_MCR);
> val |= PF_MCR_PTOMR;
> - ls_pcie_pf_writel(pcie, LS_PCIE_PF_MCR, val);
> + ls_pcie_pf_lut_writel(pcie, LS_PCIE_PF_MCR, val);
>
> - ret = readx_poll_timeout(ls_pcie_pf_readl_addr, LS_PCIE_PF_MCR,
> + ret = readx_poll_timeout(ls_pcie_pf_lut_readl_addr, LS_PCIE_PF_MCR,
> val, !(val & PF_MCR_PTOMR),
> PCIE_PME_TO_L2_TIMEOUT_US/10,
> PCIE_PME_TO_L2_TIMEOUT_US);
> @@ -149,15 +149,15 @@ static int ls_pcie_exit_from_l2(struct dw_pcie_rp *pp)
> * Set PF_MCR_EXL2S bit in LS_PCIE_PF_MCR register for the link
> * to exit L2 state.
> */
> - val = ls_pcie_pf_readl(pcie, LS_PCIE_PF_MCR);
> + val = ls_pcie_pf_lut_readl(pcie, LS_PCIE_PF_MCR);
> val |= PF_MCR_EXL2S;
> - ls_pcie_pf_writel(pcie, LS_PCIE_PF_MCR, val);
> + ls_pcie_pf_lut_writel(pcie, LS_PCIE_PF_MCR, val);
>
> /*
> * L2 exit timeout of 10ms is not defined in the specifications,
> * it was chosen based on empirical observations.
> */
> - ret = readx_poll_timeout(ls_pcie_pf_readl_addr, LS_PCIE_PF_MCR,
> + ret = readx_poll_timeout(ls_pcie_pf_lut_readl_addr, LS_PCIE_PF_MCR,
> val, !(val & PF_MCR_EXL2S),
> 1000,
> 10000);
> @@ -245,7 +245,7 @@ static const struct ls_pcie_drvdata ls1021a_drvdata = {
> };
>
> static const struct ls_pcie_drvdata layerscape_drvdata = {
> - .pf_off = 0xc0000,
> + .pf_lut_off = 0xc0000,
> .pm_support = true,
> .exit_from_l2 = ls_pcie_exit_from_l2,
> };
> @@ -295,7 +295,7 @@ static int ls_pcie_probe(struct platform_device *pdev)
>
> pcie->big_endian = of_property_read_bool(dev->of_node, "big-endian");
>
> - pcie->pf_base = pci->dbi_base + pcie->drvdata->pf_off;
> + pcie->pf_lut_base = pci->dbi_base + pcie->drvdata->pf_lut_off;
>
> if (pcie->drvdata->flags & LS_PCIE_DRV_SCFG) {
>
> --
> 2.34.1
>
--
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