[SCSI] ufs: add dme configuration primitives
Implements to support GET and SET operations of the DME.
These operations are used to configure the behavior of
the UNIPRO. Along with basic operation, {Peer/AttrSetType}
can be mixed.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Tested-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Seungwon Jeon
James Bottomley
parent
7d568652d3
commit
12b4fdb4f6
3 changed files with 145 additions and 0 deletions
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@ -234,6 +234,18 @@ static inline int ufshcd_get_uic_cmd_result(struct ufs_hba *hba)
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MASK_UIC_COMMAND_RESULT;
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}
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/**
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* ufshcd_get_dme_attr_val - Get the value of attribute returned by UIC command
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* @hba: Pointer to adapter instance
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*
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* This function gets UIC command argument3
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* Returns 0 on success, non zero value on error
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*/
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static inline u32 ufshcd_get_dme_attr_val(struct ufs_hba *hba)
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{
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return ufshcd_readl(hba, REG_UIC_COMMAND_ARG_3);
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}
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/**
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* ufshcd_get_req_rsp - returns the TR response transaction type
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* @ucd_rsp_ptr: pointer to response UPIU
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@ -1373,6 +1385,80 @@ static int ufshcd_dme_link_startup(struct ufs_hba *hba)
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return ret;
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}
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/**
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* ufshcd_dme_set_attr - UIC command for DME_SET, DME_PEER_SET
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* @hba: per adapter instance
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* @attr_sel: uic command argument1
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* @attr_set: attribute set type as uic command argument2
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* @mib_val: setting value as uic command argument3
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* @peer: indicate whether peer or local
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*
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* Returns 0 on success, non-zero value on failure
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*/
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int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
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u8 attr_set, u32 mib_val, u8 peer)
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{
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struct uic_command uic_cmd = {0};
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static const char *const action[] = {
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"dme-set",
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"dme-peer-set"
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};
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const char *set = action[!!peer];
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int ret;
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uic_cmd.command = peer ?
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UIC_CMD_DME_PEER_SET : UIC_CMD_DME_SET;
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uic_cmd.argument1 = attr_sel;
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uic_cmd.argument2 = UIC_ARG_ATTR_TYPE(attr_set);
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uic_cmd.argument3 = mib_val;
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ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
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if (ret)
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dev_err(hba->dev, "%s: attr-id 0x%x val 0x%x error code %d\n",
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set, UIC_GET_ATTR_ID(attr_sel), mib_val, ret);
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return ret;
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}
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EXPORT_SYMBOL_GPL(ufshcd_dme_set_attr);
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/**
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* ufshcd_dme_get_attr - UIC command for DME_GET, DME_PEER_GET
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* @hba: per adapter instance
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* @attr_sel: uic command argument1
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* @mib_val: the value of the attribute as returned by the UIC command
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* @peer: indicate whether peer or local
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*
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* Returns 0 on success, non-zero value on failure
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*/
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int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
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u32 *mib_val, u8 peer)
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{
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struct uic_command uic_cmd = {0};
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static const char *const action[] = {
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"dme-get",
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"dme-peer-get"
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};
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const char *get = action[!!peer];
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int ret;
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uic_cmd.command = peer ?
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UIC_CMD_DME_PEER_GET : UIC_CMD_DME_GET;
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uic_cmd.argument1 = attr_sel;
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ret = ufshcd_send_uic_cmd(hba, &uic_cmd);
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if (ret) {
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dev_err(hba->dev, "%s: attr-id 0x%x error code %d\n",
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get, UIC_GET_ATTR_ID(attr_sel), ret);
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goto out;
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}
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if (mib_val)
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*mib_val = uic_cmd.argument3;
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out:
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return ret;
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}
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EXPORT_SYMBOL_GPL(ufshcd_dme_get_attr);
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/**
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* ufshcd_complete_dev_init() - checks device readiness
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* hba: per-adapter instance
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@ -1908,6 +1994,8 @@ static void ufshcd_uic_cmd_compl(struct ufs_hba *hba)
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if (hba->active_uic_cmd) {
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hba->active_uic_cmd->argument2 |=
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ufshcd_get_uic_cmd_result(hba);
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hba->active_uic_cmd->argument3 =
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ufshcd_get_dme_attr_val(hba);
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complete(&hba->active_uic_cmd->done);
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}
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}
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@ -263,4 +263,55 @@ static inline void check_upiu_size(void)
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extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
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extern int ufshcd_runtime_resume(struct ufs_hba *hba);
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extern int ufshcd_runtime_idle(struct ufs_hba *hba);
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extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
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u8 attr_set, u32 mib_val, u8 peer);
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extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
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u32 *mib_val, u8 peer);
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/* UIC command interfaces for DME primitives */
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#define DME_LOCAL 0
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#define DME_PEER 1
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#define ATTR_SET_NOR 0 /* NORMAL */
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#define ATTR_SET_ST 1 /* STATIC */
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static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
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u32 mib_val)
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{
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return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
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mib_val, DME_LOCAL);
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}
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static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
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u32 mib_val)
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{
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return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
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mib_val, DME_LOCAL);
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}
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static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
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u32 mib_val)
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{
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return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
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mib_val, DME_PEER);
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}
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static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
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u32 mib_val)
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{
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return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
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mib_val, DME_PEER);
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}
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static inline int ufshcd_dme_get(struct ufs_hba *hba,
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u32 attr_sel, u32 *mib_val)
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{
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return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
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}
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static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
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u32 attr_sel, u32 *mib_val)
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{
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return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
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}
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#endif /* End of Header */
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@ -191,6 +191,12 @@ enum {
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#define CONFIG_RESULT_CODE_MASK 0xFF
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#define GENERIC_ERROR_CODE_MASK 0xFF
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#define UIC_ARG_MIB_SEL(attr, sel) ((((attr) & 0xFFFF) << 16) |\
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((sel) & 0xFFFF))
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#define UIC_ARG_MIB(attr) UIC_ARG_MIB_SEL(attr, 0)
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#define UIC_ARG_ATTR_TYPE(t) (((t) & 0xFF) << 16)
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#define UIC_GET_ATTR_ID(v) (((v) >> 16) & 0xFFFF)
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/* UIC Commands */
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enum {
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UIC_CMD_DME_GET = 0x01,
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