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Date: Sat, 26 Jan 2019 20:17:11 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: vinholikatti@...il.com, jejb@...ux.vnet.ibm.com,
martin.petersen@...cle.com, liwei213@...wei.com, robh+dt@...nel.org
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
john.stultz@...aro.org, amit.kucheria@...aro.org,
guodong.xu@...aro.org
Subject: Re: [PATCH v2 3/3] scsi: ufs: Add HI3670 SoC UFS driver support
On Sat, Jan 05, 2019 at 12:58:59PM +0530, Manivannan Sadhasivam wrote:
> Add HI3670 SoC UFS driver support by extending the common ufs-hisi
> driver. One major difference between HI3660 ad HI3670 SoCs interms of
> UFS is the PHY. HI3670 has a 10nm variant PHY and hence this parameter is
> used to distinguish the configuration.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Hello,
Ping on this patch!
Thanks,
Mani
> ---
> drivers/scsi/ufs/ufs-hisi.c | 127 +++++++++++++++++++++++++++++-------
> drivers/scsi/ufs/ufs-hisi.h | 4 ++
> 2 files changed, 109 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/scsi/ufs/ufs-hisi.c
> index 452e19f8fb47..f2d3df357a97 100644
> --- a/drivers/scsi/ufs/ufs-hisi.c
> +++ b/drivers/scsi/ufs/ufs-hisi.c
> @@ -66,7 +66,7 @@ static int ufs_hisi_check_hibern8(struct ufs_hba *hba)
> return err;
> }
>
> -static void ufs_hi3660_clk_init(struct ufs_hba *hba)
> +static void ufs_hisi_clk_init(struct ufs_hba *hba)
> {
> struct ufs_hisi_host *host = ufshcd_get_variant(hba);
>
> @@ -80,7 +80,7 @@ static void ufs_hi3660_clk_init(struct ufs_hba *hba)
> ufs_sys_ctrl_set_bits(host, BIT_SYSCTRL_REF_CLOCK_EN, PHY_CLK_CTRL);
> }
>
> -static void ufs_hi3660_soc_init(struct ufs_hba *hba)
> +static void ufs_hisi_soc_init(struct ufs_hba *hba)
> {
> struct ufs_hisi_host *host = ufshcd_get_variant(hba);
> u32 reg;
> @@ -139,6 +139,7 @@ static void ufs_hi3660_soc_init(struct ufs_hba *hba)
>
> static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
> {
> + struct ufs_hisi_host *host = ufshcd_get_variant(hba);
> int err;
> uint32_t value;
> uint32_t reg;
> @@ -153,6 +154,14 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8121, 0x0), 0x2D);
> /* MPHY CBOVRCTRL3 */
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8122, 0x0), 0x1);
> +
> + if (host->caps & UFS_HISI_CAP_PHY10nm) {
> + /* MPHY CBOVRCTRL4 */
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8127, 0x0), 0x98);
> + /* MPHY CBOVRCTRL5 */
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8128, 0x0), 0x1);
> + }
> +
> /* Unipro VS_MphyCfgUpdt */
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xD085, 0x0), 0x1);
> /* MPHY RXOVRCTRL4 rx0 */
> @@ -173,10 +182,21 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8113, 0x0), 0x1);
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xD085, 0x0), 0x1);
>
> - /* Tactive RX */
> - ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008F, 0x4), 0x7);
> - /* Tactive RX */
> - ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008F, 0x5), 0x7);
> + if (host->caps & UFS_HISI_CAP_PHY10nm) {
> + /* RX_Hibern8Time_Capability*/
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x0092, 0x4), 0xA);
> + /* RX_Hibern8Time_Capability*/
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x0092, 0x5), 0xA);
> + /* RX_Min_ActivateTime */
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008f, 0x4), 0xA);
> + /* RX_Min_ActivateTime*/
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008f, 0x5), 0xA);
> + } else {
> + /* Tactive RX */
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008F, 0x4), 0x7);
> + /* Tactive RX */
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x008F, 0x5), 0x7);
> + }
>
> /* Gear3 Synclength */
> ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x0095, 0x4), 0x4F);
> @@ -208,7 +228,8 @@ static int ufs_hisi_link_startup_pre_change(struct ufs_hba *hba)
> if (err)
> dev_err(hba->dev, "ufs_hisi_check_hibern8 error\n");
>
> - ufshcd_writel(hba, UFS_HCLKDIV_NORMAL_VALUE, UFS_REG_HCLKDIV);
> + if (!(host->caps & UFS_HISI_CAP_PHY10nm))
> + ufshcd_writel(hba, UFS_HCLKDIV_NORMAL_VALUE, UFS_REG_HCLKDIV);
>
> /* disable auto H8 */
> reg = ufshcd_readl(hba, REG_AUTO_HIBERNATE_IDLE_TIMER);
> @@ -253,7 +274,7 @@ static int ufs_hisi_link_startup_post_change(struct ufs_hba *hba)
> return 0;
> }
>
> -static int ufs_hi3660_link_startup_notify(struct ufs_hba *hba,
> +static int ufs_hisi_link_startup_notify(struct ufs_hba *hba,
> enum ufs_notify_change_status status)
> {
> int err = 0;
> @@ -391,6 +412,28 @@ static void ufs_hisi_set_dev_cap(struct ufs_hisi_dev_params *hisi_param)
>
> static void ufs_hisi_pwr_change_pre_change(struct ufs_hba *hba)
> {
> + struct ufs_hisi_host *host = ufshcd_get_variant(hba);
> +
> + if (host->caps & UFS_HISI_CAP_PHY10nm) {
> + /*
> + * Boston platform need to set SaveConfigTime to 0x13,
> + * and change sync length to maximum value
> + */
> + /* VS_DebugSaveConfigTime */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0xD0A0), 0x13);
> + /* g1 sync length */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0x1552), 0x4f);
> + /* g2 sync length */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0x1554), 0x4f);
> + /* g3 sync length */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0x1556), 0x4f);
> + /* PA_Hibern8Time */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0x15a7), 0xA);
> + /* PA_Tactivate */
> + ufshcd_dme_set(hba, UIC_ARG_MIB((u32)0x15a8), 0xA);
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xd085, 0x0), 0x01);
> + }
> +
> if (hba->dev_quirks & UFS_DEVICE_QUIRK_HOST_VS_DEBUGSAVECONFIGTIME) {
> pr_info("ufs flash device must set VS_DebugSaveConfigTime 0x10\n");
> /* VS_DebugSaveConfigTime */
> @@ -429,7 +472,7 @@ static void ufs_hisi_pwr_change_pre_change(struct ufs_hba *hba)
> ufshcd_dme_set(hba, UIC_ARG_MIB(0xd046), 32767);
> }
>
> -static int ufs_hi3660_pwr_change_notify(struct ufs_hba *hba,
> +static int ufs_hisi_pwr_change_notify(struct ufs_hba *hba,
> enum ufs_notify_change_status status,
> struct ufs_pa_layer_attr *dev_max_params,
> struct ufs_pa_layer_attr *dev_req_params)
> @@ -567,25 +610,72 @@ static int ufs_hi3660_init(struct ufs_hba *hba)
> return ret;
> }
>
> - ufs_hi3660_clk_init(hba);
> + ufs_hisi_clk_init(hba);
> +
> + ufs_hisi_soc_init(hba);
> +
> + return 0;
> +}
> +
> +static int ufs_hi3670_init(struct ufs_hba *hba)
> +{
> + int ret = 0;
> + struct device *dev = hba->dev;
> + struct ufs_hisi_host *host;
> +
> + ret = ufs_hisi_init_common(hba);
> + if (ret) {
> + dev_err(dev, "%s: ufs common init fail\n", __func__);
> + return ret;
> + }
> +
> + ufs_hisi_clk_init(hba);
> +
> + ufs_hisi_soc_init(hba);
>
> - ufs_hi3660_soc_init(hba);
> + /* Add cap for 10nm PHY variant on HI3670 SoC */
> + host = ufshcd_get_variant(hba);
> + host->caps |= UFS_HISI_CAP_PHY10nm;
>
> return 0;
> }
>
> -static struct ufs_hba_variant_ops ufs_hba_hisi_vops = {
> +static struct ufs_hba_variant_ops ufs_hba_hi3660_vops = {
> .name = "hi3660",
> .init = ufs_hi3660_init,
> - .link_startup_notify = ufs_hi3660_link_startup_notify,
> - .pwr_change_notify = ufs_hi3660_pwr_change_notify,
> + .link_startup_notify = ufs_hisi_link_startup_notify,
> + .pwr_change_notify = ufs_hisi_pwr_change_notify,
> .suspend = ufs_hisi_suspend,
> .resume = ufs_hisi_resume,
> };
>
> +static struct ufs_hba_variant_ops ufs_hba_hi3670_vops = {
> + .name = "hi3670",
> + .init = ufs_hi3670_init,
> + .link_startup_notify = ufs_hisi_link_startup_notify,
> + .pwr_change_notify = ufs_hisi_pwr_change_notify,
> + .suspend = ufs_hisi_suspend,
> + .resume = ufs_hisi_resume,
> +};
> +
> +static const struct of_device_id ufs_hisi_of_match[] = {
> + { .compatible = "hisilicon,hi3660-ufs", .data = &ufs_hba_hi3660_vops },
> + { .compatible = "hisilicon,hi3670-ufs", .data = &ufs_hba_hi3670_vops },
> + {},
> +};
> +
> +MODULE_DEVICE_TABLE(of, ufs_hisi_of_match);
> +
> static int ufs_hisi_probe(struct platform_device *pdev)
> {
> - return ufshcd_pltfrm_init(pdev, &ufs_hba_hisi_vops);
> + const struct of_device_id *of_id;
> + struct ufs_hba_variant_ops *vops;
> + struct device *dev = &pdev->dev;
> +
> + of_id = of_match_node(ufs_hisi_of_match, dev->of_node);
> + vops = (struct ufs_hba_variant_ops *)of_id->data;
> +
> + return ufshcd_pltfrm_init(pdev, vops);
> }
>
> static int ufs_hisi_remove(struct platform_device *pdev)
> @@ -596,13 +686,6 @@ static int ufs_hisi_remove(struct platform_device *pdev)
> return 0;
> }
>
> -static const struct of_device_id ufs_hisi_of_match[] = {
> - { .compatible = "hisilicon,hi3660-ufs" },
> - {},
> -};
> -
> -MODULE_DEVICE_TABLE(of, ufs_hisi_of_match);
> -
> static const struct dev_pm_ops ufs_hisi_pm_ops = {
> .suspend = ufshcd_pltfrm_suspend,
> .resume = ufshcd_pltfrm_resume,
> diff --git a/drivers/scsi/ufs/ufs-hisi.h b/drivers/scsi/ufs/ufs-hisi.h
> index 3df9cd7acc29..667dfe39b57e 100644
> --- a/drivers/scsi/ufs/ufs-hisi.h
> +++ b/drivers/scsi/ufs/ufs-hisi.h
> @@ -91,6 +91,9 @@ enum {
> #define UFS_HISI_LIMIT_HS_RATE PA_HS_MODE_B
> #define UFS_HISI_LIMIT_DESIRED_MODE FAST
>
> +#define UFS_HISI_CAP_RESERVED BIT(0)
> +#define UFS_HISI_CAP_PHY10nm BIT(1)
> +
> struct ufs_hisi_host {
> struct ufs_hba *hba;
> void __iomem *ufs_sys_ctrl;
> @@ -112,4 +115,5 @@ struct ufs_hisi_host {
> ufs_sys_ctrl_writel((host), \
> ((~(mask)) & (ufs_sys_ctrl_readl((host), (reg)))), \
> (reg))
> +
> #endif /* UFS_HISI_H_ */
> --
> 2.17.1
>
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