| Message ID | 1618971622-30539-9-git-send-email-peng.fan@oss.nxp.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | remoteproc: imx_rproc: support i.MX7ULP/8MN/8MP | expand |
On Wed, Apr 21, 2021 at 10:20:22AM +0800, peng.fan@oss.nxp.com wrote: > From: Peng Fan <peng.fan@nxp.com> > > Add i.MX8MN/P remote processor(Cortex-M7) support, we are using ARM > SMCCC to start/stop M core, not using regmap interface. > > Signed-off-by: Peng Fan <peng.fan@nxp.com> > --- > drivers/remoteproc/imx_rproc.c | 87 +++++++++++++++++++++++++++++++--- > 1 file changed, 80 insertions(+), 7 deletions(-) > > diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c > index d26254609a52..3cb901c87a7d 100644 > --- a/drivers/remoteproc/imx_rproc.c > +++ b/drivers/remoteproc/imx_rproc.c > @@ -3,6 +3,7 @@ > * Copyright (c) 2017 Pengutronix, Oleksij Rempel <kernel@pengutronix.de> > */ > > +#include <linux/arm-smccc.h> > #include <linux/clk.h> > #include <linux/err.h> > #include <linux/interrupt.h> > @@ -50,6 +51,11 @@ > > #define IMX_RPROC_MEM_MAX 32 > > +#define IMX_SIP_RPROC 0xC2000005 > +#define IMX_SIP_RPROC_START 0x00 > +#define IMX_SIP_RPROC_STARTED 0x01 > +#define IMX_SIP_RPROC_STOP 0x02 > + > /** > * struct imx_rproc_mem - slim internal memory structure > * @cpu_addr: MPU virtual address of the memory region > @@ -108,6 +114,36 @@ struct imx_rproc { > void __iomem *rsc_table; > }; > > +static const struct imx_rproc_att imx_rproc_att_imx8mn[] = { > + /* dev addr , sys addr , size , flags */ > + /* ITCM */ > + { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN }, > + /* OCRAM_S */ > + { 0x00180000, 0x00180000, 0x00009000, 0 }, > + /* OCRAM */ > + { 0x00900000, 0x00900000, 0x00020000, 0 }, > + /* OCRAM */ > + { 0x00920000, 0x00920000, 0x00020000, 0 }, > + /* OCRAM */ > + { 0x00940000, 0x00940000, 0x00050000, 0 }, > + /* QSPI Code - alias */ > + { 0x08000000, 0x08000000, 0x08000000, 0 }, > + /* DDR (Code) - alias */ > + { 0x10000000, 0x40000000, 0x0FFE0000, 0 }, > + /* DTCM */ > + { 0x20000000, 0x00800000, 0x00020000, ATT_OWN }, > + /* OCRAM_S - alias */ > + { 0x20180000, 0x00180000, 0x00008000, ATT_OWN }, > + /* OCRAM */ > + { 0x20200000, 0x00900000, 0x00020000, ATT_OWN }, > + /* OCRAM */ > + { 0x20220000, 0x00920000, 0x00020000, ATT_OWN }, > + /* OCRAM */ > + { 0x20240000, 0x00940000, 0x00040000, ATT_OWN }, > + /* DDR (Data) */ > + { 0x40000000, 0x40000000, 0x80000000, 0 }, > +}; > + > static const struct imx_rproc_att imx_rproc_att_imx8mq[] = { > /* dev addr , sys addr , size , flags */ > /* TCML - alias */ > @@ -194,6 +230,12 @@ static const struct imx_rproc_att imx_rproc_att_imx6sx[] = { > { 0x80000000, 0x80000000, 0x60000000, 0 }, > }; > > +static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mn = { > + .att = imx_rproc_att_imx8mn, > + .att_size = ARRAY_SIZE(imx_rproc_att_imx8mn), > + .method = IMX_RPROC_SMC, > +}; > + > static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mq = { > .src_reg = IMX7D_SRC_SCR, > .src_mask = IMX7D_M4_RST_MASK, > @@ -235,12 +277,24 @@ static int imx_rproc_start(struct rproc *rproc) > struct imx_rproc *priv = rproc->priv; > const struct imx_rproc_dcfg *dcfg = priv->dcfg; > struct device *dev = priv->dev; > + struct arm_smccc_res res; > int ret; > > - ret = regmap_update_bits(priv->regmap, dcfg->src_reg, > - dcfg->src_mask, dcfg->src_start); > + switch (dcfg->method) { > + case IMX_RPROC_MMIO: > + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, > + dcfg->src_start); > + break; > + case IMX_RPROC_SMC: > + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_START, 0, 0, 0, 0, 0, 0, &res); > + ret = res.a0; > + break; > + default: > + return -EOPNOTSUPP; > + } > + > if (ret) > - dev_err(dev, "Failed to enable M4!\n"); > + dev_err(dev, "Failed to enable remote cores!\n"); s/cores/core > > return ret; > } > @@ -250,15 +304,26 @@ static int imx_rproc_stop(struct rproc *rproc) > struct imx_rproc *priv = rproc->priv; > const struct imx_rproc_dcfg *dcfg = priv->dcfg; > struct device *dev = priv->dev; > + struct arm_smccc_res res; > int ret; > > - if (dcfg->method == IMX_RPROC_NONE) > + switch (dcfg->method) { > + case IMX_RPROC_MMIO: > + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, > + dcfg->src_stop); > + break; > + case IMX_RPROC_SMC: > + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STOP, 0, 0, 0, 0, 0, 0, &res); > + ret = res.a0; > + if (res.a1) > + dev_info(dev, "Not in wfi, force stopped\n"); > + break; > + default: > return -EOPNOTSUPP; > + } > > - ret = regmap_update_bits(priv->regmap, dcfg->src_reg, > - dcfg->src_mask, dcfg->src_stop); > if (ret) > - dev_err(dev, "Failed to stop M4!\n"); > + dev_err(dev, "Failed to stop remote cores\n"); s/cores/core > > return ret; > } > @@ -594,6 +659,7 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) > const struct imx_rproc_dcfg *dcfg = priv->dcfg; > struct device *dev = priv->dev; > struct regmap *regmap; > + struct arm_smccc_res res; > int ret; > u32 val; > > @@ -601,6 +667,11 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) > case IMX_RPROC_NONE: > priv->rproc->state = RPROC_DETACHED; > return 0; > + case IMX_RPROC_SMC: > + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STARTED, 0, 0, 0, 0, 0, 0, &res); > + if (res.a0) > + priv->rproc->state = RPROC_DETACHED; > + return 0; > default: > break; > } > @@ -751,6 +822,8 @@ static const struct of_device_id imx_rproc_of_match[] = { > { .compatible = "fsl,imx6sx-cm4", .data = &imx_rproc_cfg_imx6sx }, > { .compatible = "fsl,imx8mq-cm4", .data = &imx_rproc_cfg_imx8mq }, > { .compatible = "fsl,imx8mm-cm4", .data = &imx_rproc_cfg_imx8mq }, > + { .compatible = "fsl,imx8mn-cm7", .data = &imx_rproc_cfg_imx8mn }, > + { .compatible = "fsl,imx8mp-cm7", .data = &imx_rproc_cfg_imx8mn }, With the above: Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> > {}, > }; > MODULE_DEVICE_TABLE(of, imx_rproc_of_match); > -- > 2.30.0 >
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c index d26254609a52..3cb901c87a7d 100644 --- a/drivers/remoteproc/imx_rproc.c +++ b/drivers/remoteproc/imx_rproc.c @@ -3,6 +3,7 @@ * Copyright (c) 2017 Pengutronix, Oleksij Rempel <kernel@pengutronix.de> */ +#include <linux/arm-smccc.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/interrupt.h> @@ -50,6 +51,11 @@ #define IMX_RPROC_MEM_MAX 32 +#define IMX_SIP_RPROC 0xC2000005 +#define IMX_SIP_RPROC_START 0x00 +#define IMX_SIP_RPROC_STARTED 0x01 +#define IMX_SIP_RPROC_STOP 0x02 + /** * struct imx_rproc_mem - slim internal memory structure * @cpu_addr: MPU virtual address of the memory region @@ -108,6 +114,36 @@ struct imx_rproc { void __iomem *rsc_table; }; +static const struct imx_rproc_att imx_rproc_att_imx8mn[] = { + /* dev addr , sys addr , size , flags */ + /* ITCM */ + { 0x00000000, 0x007E0000, 0x00020000, ATT_OWN }, + /* OCRAM_S */ + { 0x00180000, 0x00180000, 0x00009000, 0 }, + /* OCRAM */ + { 0x00900000, 0x00900000, 0x00020000, 0 }, + /* OCRAM */ + { 0x00920000, 0x00920000, 0x00020000, 0 }, + /* OCRAM */ + { 0x00940000, 0x00940000, 0x00050000, 0 }, + /* QSPI Code - alias */ + { 0x08000000, 0x08000000, 0x08000000, 0 }, + /* DDR (Code) - alias */ + { 0x10000000, 0x40000000, 0x0FFE0000, 0 }, + /* DTCM */ + { 0x20000000, 0x00800000, 0x00020000, ATT_OWN }, + /* OCRAM_S - alias */ + { 0x20180000, 0x00180000, 0x00008000, ATT_OWN }, + /* OCRAM */ + { 0x20200000, 0x00900000, 0x00020000, ATT_OWN }, + /* OCRAM */ + { 0x20220000, 0x00920000, 0x00020000, ATT_OWN }, + /* OCRAM */ + { 0x20240000, 0x00940000, 0x00040000, ATT_OWN }, + /* DDR (Data) */ + { 0x40000000, 0x40000000, 0x80000000, 0 }, +}; + static const struct imx_rproc_att imx_rproc_att_imx8mq[] = { /* dev addr , sys addr , size , flags */ /* TCML - alias */ @@ -194,6 +230,12 @@ static const struct imx_rproc_att imx_rproc_att_imx6sx[] = { { 0x80000000, 0x80000000, 0x60000000, 0 }, }; +static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mn = { + .att = imx_rproc_att_imx8mn, + .att_size = ARRAY_SIZE(imx_rproc_att_imx8mn), + .method = IMX_RPROC_SMC, +}; + static const struct imx_rproc_dcfg imx_rproc_cfg_imx8mq = { .src_reg = IMX7D_SRC_SCR, .src_mask = IMX7D_M4_RST_MASK, @@ -235,12 +277,24 @@ static int imx_rproc_start(struct rproc *rproc) struct imx_rproc *priv = rproc->priv; const struct imx_rproc_dcfg *dcfg = priv->dcfg; struct device *dev = priv->dev; + struct arm_smccc_res res; int ret; - ret = regmap_update_bits(priv->regmap, dcfg->src_reg, - dcfg->src_mask, dcfg->src_start); + switch (dcfg->method) { + case IMX_RPROC_MMIO: + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, + dcfg->src_start); + break; + case IMX_RPROC_SMC: + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_START, 0, 0, 0, 0, 0, 0, &res); + ret = res.a0; + break; + default: + return -EOPNOTSUPP; + } + if (ret) - dev_err(dev, "Failed to enable M4!\n"); + dev_err(dev, "Failed to enable remote cores!\n"); return ret; } @@ -250,15 +304,26 @@ static int imx_rproc_stop(struct rproc *rproc) struct imx_rproc *priv = rproc->priv; const struct imx_rproc_dcfg *dcfg = priv->dcfg; struct device *dev = priv->dev; + struct arm_smccc_res res; int ret; - if (dcfg->method == IMX_RPROC_NONE) + switch (dcfg->method) { + case IMX_RPROC_MMIO: + ret = regmap_update_bits(priv->regmap, dcfg->src_reg, dcfg->src_mask, + dcfg->src_stop); + break; + case IMX_RPROC_SMC: + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STOP, 0, 0, 0, 0, 0, 0, &res); + ret = res.a0; + if (res.a1) + dev_info(dev, "Not in wfi, force stopped\n"); + break; + default: return -EOPNOTSUPP; + } - ret = regmap_update_bits(priv->regmap, dcfg->src_reg, - dcfg->src_mask, dcfg->src_stop); if (ret) - dev_err(dev, "Failed to stop M4!\n"); + dev_err(dev, "Failed to stop remote cores\n"); return ret; } @@ -594,6 +659,7 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) const struct imx_rproc_dcfg *dcfg = priv->dcfg; struct device *dev = priv->dev; struct regmap *regmap; + struct arm_smccc_res res; int ret; u32 val; @@ -601,6 +667,11 @@ static int imx_rproc_detect_mode(struct imx_rproc *priv) case IMX_RPROC_NONE: priv->rproc->state = RPROC_DETACHED; return 0; + case IMX_RPROC_SMC: + arm_smccc_smc(IMX_SIP_RPROC, IMX_SIP_RPROC_STARTED, 0, 0, 0, 0, 0, 0, &res); + if (res.a0) + priv->rproc->state = RPROC_DETACHED; + return 0; default: break; } @@ -751,6 +822,8 @@ static const struct of_device_id imx_rproc_of_match[] = { { .compatible = "fsl,imx6sx-cm4", .data = &imx_rproc_cfg_imx6sx }, { .compatible = "fsl,imx8mq-cm4", .data = &imx_rproc_cfg_imx8mq }, { .compatible = "fsl,imx8mm-cm4", .data = &imx_rproc_cfg_imx8mq }, + { .compatible = "fsl,imx8mn-cm7", .data = &imx_rproc_cfg_imx8mn }, + { .compatible = "fsl,imx8mp-cm7", .data = &imx_rproc_cfg_imx8mn }, {}, }; MODULE_DEVICE_TABLE(of, imx_rproc_of_match);