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Wed, 6 Mar 2019 17:50:38 +0800 From: Bibby Hsieh To: Jassi Brar , Matthias Brugger , Rob Herring , CK HU Subject: [PATCH v2 07/10] soc: mediatek: cmdq: add packet encoder function Date: Wed, 6 Mar 2019 17:50:32 +0800 Message-ID: <1551865835-50974-8-git-send-email-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1551865835-50974-1-git-send-email-bibby.hsieh@mediatek.com> References: <1551865835-50974-1-git-send-email-bibby.hsieh@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190306_015056_008385_1AA3C2C9 X-CRM114-Status: GOOD ( 15.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Nicolas Boichat , Philipp Zabel , srv_heupstream@mediatek.com, Daoyuan Huang , Sascha Hauer , linux-kernel@vger.kernel.org, Daniel Kurtz , Dennis-YC Hsieh , kendrick.hsu@mediatek.com, linux-mediatek@lists.infradead.org, Houlong Wei , Sascha Hauer , Frederic Chen , YT Shen , Jiaguang Zhang , Bibby Hsieh , linux-arm-kernel@lists.infradead.org, ginny.chen@mediatek.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Implement a function can encode the GCE instructions Signed-off-by: Bibby Hsieh --- drivers/soc/mediatek/mtk-cmdq-helper.c | 125 ++++++++++++++++++++++--------- include/linux/mailbox/mtk-cmdq-mailbox.h | 2 + include/linux/soc/mediatek/mtk-cmdq.h | 14 ++-- 3 files changed, 99 insertions(+), 42 deletions(-) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index ff9fef5..d3873ab 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -9,11 +9,43 @@ #include #include -#define CMDQ_ARG_A_WRITE_MASK 0xffff +#define CMDQ_GET_ARG_B(arg) (((arg) & GENMASK(31, 16)) >> 16) +#define CMDQ_GET_ARG_C(arg) ((arg) & GENMASK(15, 0)) #define CMDQ_WRITE_ENABLE_MASK BIT(0) #define CMDQ_EOC_IRQ_EN BIT(0) #define CMDQ_EOC_CMD ((u64)((CMDQ_CODE_EOC << CMDQ_OP_CODE_SHIFT)) \ << 32 | CMDQ_EOC_IRQ_EN) +#define CMDQ_IMMEDIATE_VALUE 0 +#define CMDQ_REG_TYPE 1 + +struct cmdq_instruction { + s16 arg_c:16; + s16 arg_b:16; + s16 arg_a:16; + u8 s_op:5; + u8 arg_c_type:1; + u8 arg_b_type:1; + u8 arg_a_type:1; + u8 op:8; +}; + +static void cmdq_pkt_instr_encoder(struct cmdq_pkt *pkt, s16 arg_c, s16 arg_b, + s16 arg_a, u8 s_op, u8 arg_c_type, + u8 arg_b_type, u8 arg_a_type, u8 op) +{ + struct cmdq_instruction *cmdq_inst; + + cmdq_inst = pkt->va_base + pkt->cmd_buf_size; + cmdq_inst->op = op; + cmdq_inst->arg_a_type = arg_a_type; + cmdq_inst->arg_b_type = arg_b_type; + cmdq_inst->arg_c_type = arg_c_type; + cmdq_inst->s_op = s_op; + cmdq_inst->arg_a = arg_a; + cmdq_inst->arg_b = arg_b; + cmdq_inst->arg_c = arg_c; + pkt->cmd_buf_size += CMDQ_INST_SIZE; +} static void cmdq_client_timeout(struct timer_list *t) { @@ -110,10 +142,11 @@ void cmdq_pkt_destroy(struct cmdq_pkt *pkt) } EXPORT_SYMBOL(cmdq_pkt_destroy); -static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, - u32 arg_a, u32 arg_b) +static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, s16 arg_c, s16 arg_b, + s16 arg_a, u8 s_op, u8 arg_c_type, + u8 arg_b_type, u8 arg_a_type, + enum cmdq_code code) { - u64 *cmd_ptr; if (unlikely(pkt->cmd_buf_size + CMDQ_INST_SIZE > pkt->buf_size)) { /* @@ -129,65 +162,72 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, __func__, (u32)pkt->buf_size); return -ENOMEM; } - cmd_ptr = pkt->va_base + pkt->cmd_buf_size; - (*cmd_ptr) = (u64)((code << CMDQ_OP_CODE_SHIFT) | arg_a) << 32 | arg_b; - pkt->cmd_buf_size += CMDQ_INST_SIZE; + cmdq_pkt_instr_encoder(pkt, arg_c, arg_b, arg_a, s_op, arg_c_type, + arg_b_type, arg_a_type, code); return 0; } -int cmdq_pkt_write(struct cmdq_pkt *pkt, u32 value, u32 subsys, u32 offset) +int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value) { - u32 arg_a = (offset & CMDQ_ARG_A_WRITE_MASK) | - (subsys << CMDQ_SUBSYS_SHIFT); - - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WRITE, arg_a, value); + return cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(value), + CMDQ_GET_ARG_B(value), offset, subsys, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, CMDQ_CODE_WRITE); } EXPORT_SYMBOL(cmdq_pkt_write); -int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u32 value, - u32 subsys, u32 offset, u32 mask) +int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, u16 offset, + u32 value, u32 mask) { u32 offset_mask = offset; int err = 0; if (mask != 0xffffffff) { - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask); + err = cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(~mask), + CMDQ_GET_ARG_B(~mask), + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_CODE_MASK); offset_mask |= CMDQ_WRITE_ENABLE_MASK; } - err |= cmdq_pkt_write(pkt, value, subsys, offset_mask); + err |= cmdq_pkt_write(pkt, subsys, offset_mask, value); return err; } EXPORT_SYMBOL(cmdq_pkt_write_mask); -int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u32 event) +int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) { - u32 arg_b; - if (event >= CMDQ_MAX_EVENT) return -EINVAL; - /* - * WFE arg_b - * bit 0-11: wait value - * bit 15: 1 - wait, 0 - no wait - * bit 16-27: update value - * bit 31: 1 - update, 0 - no update - */ - arg_b = CMDQ_WFE_UPDATE | CMDQ_WFE_WAIT | CMDQ_WFE_WAIT_VALUE; - - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, arg_b); + return cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(CMDQ_WFE_OPTION), + CMDQ_GET_ARG_B(CMDQ_WFE_OPTION), event, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_CODE_WFE); } EXPORT_SYMBOL(cmdq_pkt_wfe); -int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u32 event) +int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) { if (event >= CMDQ_MAX_EVENT) return -EINVAL; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, - CMDQ_WFE_UPDATE); + return cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(CMDQ_WFE_UPDATE), + CMDQ_GET_ARG_B(CMDQ_WFE_UPDATE), event, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_CODE_WFE); } EXPORT_SYMBOL(cmdq_pkt_clear_event); @@ -196,10 +236,25 @@ static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) int err; /* insert EOC and generate IRQ for each command iteration */ - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_EOC, 0, CMDQ_EOC_IRQ_EN); - + err = cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(CMDQ_EOC_IRQ_EN), + CMDQ_GET_ARG_B(CMDQ_EOC_IRQ_EN), + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_CODE_EOC); + if (err < 0) + return err; /* JUMP to end */ - err |= cmdq_pkt_append_command(pkt, CMDQ_CODE_JUMP, 0, CMDQ_JUMP_PASS); + err = cmdq_pkt_append_command(pkt, CMDQ_GET_ARG_C(CMDQ_JUMP_PASS), + CMDQ_GET_ARG_B(CMDQ_JUMP_PASS), + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_IMMEDIATE_VALUE, + CMDQ_CODE_JUMP); return err; } diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index 911475da..f21801d 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -19,6 +19,8 @@ #define CMDQ_WFE_UPDATE BIT(31) #define CMDQ_WFE_WAIT BIT(15) #define CMDQ_WFE_WAIT_VALUE 0x1 +#define CMDQ_WFE_OPTION (CMDQ_WFE_UPDATE | CMDQ_WFE_WAIT | \ + CMDQ_WFE_WAIT_VALUE) /** cmdq event maximum */ #define CMDQ_MAX_EVENT 0x3ff diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h index 4e88999..52f69c8 100644 --- a/include/linux/soc/mediatek/mtk-cmdq.h +++ b/include/linux/soc/mediatek/mtk-cmdq.h @@ -60,26 +60,26 @@ struct cmdq_client *cmdq_mbox_create(struct device *dev, int index, /** * cmdq_pkt_write() - append write command to the CMDQ packet * @pkt: the CMDQ packet - * @value: the specified target register value * @subsys: the CMDQ sub system code * @offset: register offset from CMDQ sub system + * @value: the specified target register value * * Return: 0 for success; else the error code is returned */ -int cmdq_pkt_write(struct cmdq_pkt *pkt, u32 value, u32 subsys, u32 offset); +int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value); /** * cmdq_pkt_write_mask() - append write command with mask to the CMDQ packet * @pkt: the CMDQ packet - * @value: the specified target register value * @subsys: the CMDQ sub system code * @offset: register offset from CMDQ sub system + * @value: the specified target register value * @mask: the specified target register mask * * Return: 0 for success; else the error code is returned */ -int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u32 value, - u32 subsys, u32 offset, u32 mask); +int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, u16 offset, + u32 value, u32 mask); /** * cmdq_pkt_wfe() - append wait for event command to the CMDQ packet @@ -88,7 +88,7 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u32 value, * * Return: 0 for success; else the error code is returned */ -int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u32 event); +int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event); /** * cmdq_pkt_clear_event() - append clear event command to the CMDQ packet @@ -97,7 +97,7 @@ int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u32 value, * * Return: 0 for success; else the error code is returned */ -int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u32 event); +int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event); /** * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ