On Sun 16 Jun 06:29 PDT 2019, Brian Masney wrote: > From: Rob Clark <robdclark@xxxxxxxxx> > > Add support to restore the secure configuration that is needed by the > On Chip MEMory (OCMEM) that is present on some Snapdragon devices. > > Signed-off-by: Rob Clark <robdclark@xxxxxxxxx> > [masneyb@xxxxxxxxxxxxx: ported to latest kernel; minor reformatting.] > Signed-off-by: Brian Masney <masneyb@xxxxxxxxxxxxx> This went upstream for 64-bit with config abbreviated cfg, so please implement __qcom_scm_restore_sec_cfg() for 32-bit and add the defines instead. Regards, Bjorn > --- > Rob's last version of this patch: > https://patchwork.kernel.org/patch/7340701/ > > drivers/firmware/qcom_scm-32.c | 21 +++++++++++++++++++++ > drivers/firmware/qcom_scm-64.c | 6 ++++++ > drivers/firmware/qcom_scm.c | 23 +++++++++++++++++++++++ > drivers/firmware/qcom_scm.h | 6 ++++++ > include/linux/qcom_scm.h | 13 +++++++++++++ > 5 files changed, 69 insertions(+) > > diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c > index 215061c581e1..089b47124933 100644 > --- a/drivers/firmware/qcom_scm-32.c > +++ b/drivers/firmware/qcom_scm-32.c > @@ -442,6 +442,27 @@ int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req, > req, req_cnt * sizeof(*req), resp, sizeof(*resp)); > } > > +int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id, > + u32 ctx_bank_num) > +{ > + struct msm_scm_sec_cfg { > + __le32 id; > + __le32 ctx_bank_num; > + } cfg; > + int ret, scm_ret = 0; > + > + cfg.id = cpu_to_le32(sec_id); > + cfg.ctx_bank_num = cpu_to_le32(sec_id); > + > + ret = qcom_scm_call(dev, QCOM_SCM_MP_SVC, QCOM_SCM_MP_RESTORE_SEC_CFG, > + &cfg, sizeof(cfg), &scm_ret, sizeof(scm_ret)); > + > + if (ret || scm_ret) > + return ret ? ret : -EINVAL; > + > + return 0; > +} > + > void __qcom_scm_init(void) > { > } > diff --git a/drivers/firmware/qcom_scm-64.c b/drivers/firmware/qcom_scm-64.c > index 91d5ad7cf58b..b6b78da7f9c9 100644 > --- a/drivers/firmware/qcom_scm-64.c > +++ b/drivers/firmware/qcom_scm-64.c > @@ -241,6 +241,12 @@ int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req, > return ret; > } > > +int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id, > + u32 ctx_bank_num) > +{ > + return -ENOTSUPP; > +} > + > void __qcom_scm_init(void) > { > u64 cmd; > diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c > index 2ddc118dba1b..5495ef994c5d 100644 > --- a/drivers/firmware/qcom_scm.c > +++ b/drivers/firmware/qcom_scm.c > @@ -170,6 +170,29 @@ int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp) > } > EXPORT_SYMBOL(qcom_scm_hdcp_req); > > +/** > + * qcom_scm_restore_sec_config_available() - Check if secure environment > + * supports restore security config interface. > + * > + * Return true if restore-cfg interface is supported, false if not. > + */ > +bool qcom_scm_restore_sec_config_available(void) > +{ > + return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_MP_SVC, > + QCOM_SCM_MP_RESTORE_SEC_CFG); > +} > +EXPORT_SYMBOL(qcom_scm_restore_sec_config_available); > + > +/** > + * qcom_scm_restore_sec_config() - call restore-cfg interface > + */ > +int qcom_scm_restore_sec_config(struct device *dev, > + enum qcom_scm_sec_dev_id sec_id) > +{ > + return __qcom_scm_restore_sec_config(dev, sec_id, 0); > +} > +EXPORT_SYMBOL(qcom_scm_restore_sec_config); > + > /** > * qcom_scm_pas_supported() - Check if the peripheral authentication service is > * available for the given peripherial > diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h > index 99506bd873c0..bccc7d10c5c2 100644 > --- a/drivers/firmware/qcom_scm.h > +++ b/drivers/firmware/qcom_scm.h > @@ -42,6 +42,12 @@ extern int __qcom_scm_hdcp_req(struct device *dev, > > extern void __qcom_scm_init(void); > > +#define QCOM_SCM_MP_SVC 0xc > +#define QCOM_SCM_MP_RESTORE_SEC_CFG 0x2 > + > +extern int __qcom_scm_restore_sec_config(struct device *dev, u32 sec_id, > + u32 ctx_bank_num); > + > #define QCOM_SCM_SVC_PIL 0x2 > #define QCOM_SCM_PAS_INIT_IMAGE_CMD 0x1 > #define QCOM_SCM_PAS_MEM_SETUP_CMD 0x2 > diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h > index 3f12cc77fb58..b5c0afaca955 100644 > --- a/include/linux/qcom_scm.h > +++ b/include/linux/qcom_scm.h > @@ -24,6 +24,16 @@ struct qcom_scm_vmperm { > int perm; > }; > > +enum qcom_scm_sec_dev_id { > + QCOM_SCM_MDSS_DEV_ID = 1, > + QCOM_SCM_OCMEM_DEV_ID = 5, > + QCOM_SCM_PCIE0_DEV_ID = 11, > + QCOM_SCM_PCIE1_DEV_ID = 12, > + QCOM_SCM_GFX_DEV_ID = 18, > + QCOM_SCM_UFS_DEV_ID = 19, > + QCOM_SCM_ICE_DEV_ID = 20, > +}; > + > #define QCOM_SCM_VMID_HLOS 0x3 > #define QCOM_SCM_VMID_MSS_MSA 0xF > #define QCOM_SCM_VMID_WLAN 0x18 > @@ -41,6 +51,9 @@ extern bool qcom_scm_is_available(void); > extern bool qcom_scm_hdcp_available(void); > extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, > u32 *resp); > +extern bool qcom_scm_restore_sec_config_available(void); > +extern int qcom_scm_restore_sec_config(struct device *dev, > + enum qcom_scm_sec_dev_id sec_id); > extern bool qcom_scm_pas_supported(u32 peripheral); > extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, > size_t size); > -- > 2.20.1 > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
