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firmware: qcom: scm: Convert to streaming DMA APIS

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This patch converts the Qualcomm SCM driver to use the streaming DMA APIs
for communication buffers.  This is being done so that the
secure_flush_area call can be removed.  Using the DMA APIs will also make
the SCM32 symmetric to the coming SCM64 code.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Andy Gross
2016-06-03 18:25:25 -05:00
parent 11bdcee4a6
commit 16e59467a4
3 changed files with 53 additions and 106 deletions
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10
drivers/firmware/qcom_scm.h
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@@ -19,7 +19,8 @@
#define QCOM_SCM_FLAG_HLOS 0x01
#define QCOM_SCM_FLAG_COLDBOOT_MC 0x02
#define QCOM_SCM_FLAG_WARMBOOT_MC 0x04
extern int __qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
extern int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
const cpumask_t *cpus);
extern int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
#define QCOM_SCM_CMD_TERMINATE_PC 0x2
@@ -29,12 +30,13 @@ extern void __qcom_scm_cpu_power_down(u32 flags);
#define QCOM_SCM_SVC_INFO 0x6
#define QCOM_IS_CALL_AVAIL_CMD 0x1
extern int __qcom_scm_is_call_available(u32 svc_id, u32 cmd_id);
extern int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
u32 cmd_id);
#define QCOM_SCM_SVC_HDCP 0x11
#define QCOM_SCM_CMD_HDCP 0x01
extern int __qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
u32 *resp);
extern int __qcom_scm_hdcp_req(struct device *dev,
struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp);
/* common error codes */
#define QCOM_SCM_ENOMEM -5