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Tue, 20 Aug 2019 16:49:33 +0800 From: Bibby Hsieh To: Jassi Brar , Matthias Brugger , Rob Herring , CK HU Subject: [RESEND, PATCH v13 09/12] soc: mediatek: cmdq: define the instruction struct Date: Tue, 20 Aug 2019 16:49:29 +0800 Message-ID: <20190820084932.22282-10-bibby.hsieh@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20190820084932.22282-1-bibby.hsieh@mediatek.com> References: <20190820084932.22282-1-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-20190820_014946_223660_ABD541C2 X-CRM114-Status: GOOD ( 13.93 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [216.200.240.184 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 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 , linux-mediatek@lists.infradead.org, Houlong Wei , Sascha Hauer , 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 Define an instruction structure for gce driver to append command. This structure can make the client's code more readability. Signed-off-by: Bibby Hsieh Reviewed-by: CK Hu Reviewed-by: Houlong Wei --- drivers/soc/mediatek/mtk-cmdq-helper.c | 106 +++++++++++++++-------- include/linux/mailbox/mtk-cmdq-mailbox.h | 2 + 2 files changed, 74 insertions(+), 34 deletions(-) diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index 7aa0517ff2f3..e3d5b0be8e79 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -9,12 +9,24 @@ #include #include -#define CMDQ_ARG_A_WRITE_MASK 0xffff #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) +struct cmdq_instruction { + union { + u32 value; + u32 mask; + }; + union { + u16 offset; + u16 event; + }; + u8 subsys; + u8 op; +}; + static void cmdq_client_timeout(struct timer_list *t) { struct cmdq_client *client = from_timer(client, t, timer); @@ -110,10 +122,8 @@ 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 struct cmdq_instruction *cmdq_pkt_append_command(struct cmdq_pkt *pkt) { - u64 *cmd_ptr; if (unlikely(pkt->cmd_buf_size + CMDQ_INST_SIZE > pkt->buf_size)) { /* @@ -127,81 +137,109 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, pkt->cmd_buf_size += CMDQ_INST_SIZE; WARN_ONCE(1, "%s: buffer size %u is too small !\n", __func__, (u32)pkt->buf_size); - return -ENOMEM; + return NULL; } - cmd_ptr = pkt->va_base + pkt->cmd_buf_size; - (*cmd_ptr) = (u64)((code << CMDQ_OP_CODE_SHIFT) | arg_a) << 32 | arg_b; + + *(u64 *)(pkt->va_base + pkt->cmd_buf_size) = 0; pkt->cmd_buf_size += CMDQ_INST_SIZE; - return 0; + return pkt->va_base + pkt->cmd_buf_size - CMDQ_INST_SIZE; } 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); + struct cmdq_instruction *inst; + + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_WRITE; + inst->value = value; + inst->offset = offset; + inst->subsys = subsys; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WRITE, arg_a, value); + return 0; } EXPORT_SYMBOL(cmdq_pkt_write); int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value, u32 mask) { - u32 offset_mask = offset; - int err = 0; + struct cmdq_instruction *inst; + u16 offset_mask = offset; if (mask != 0xffffffff) { - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask); + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_MASK; + inst->mask = ~mask; offset_mask |= CMDQ_WRITE_ENABLE_MASK; } - err |= cmdq_pkt_write(pkt, value, subsys, offset_mask); - return err; + return cmdq_pkt_write(pkt, subsys, offset_mask, value); } EXPORT_SYMBOL(cmdq_pkt_write_mask); int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) { - u32 arg_b; + struct cmdq_instruction *inst; 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; + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_WFE; + inst->value = CMDQ_WFE_OPTION; + inst->event = event; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, arg_b); + return 0; } EXPORT_SYMBOL(cmdq_pkt_wfe); int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) { + struct cmdq_instruction *inst; + if (event >= CMDQ_MAX_EVENT) return -EINVAL; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, - CMDQ_WFE_UPDATE); + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_WFE; + inst->value = CMDQ_WFE_UPDATE; + inst->event = event; + + return 0; } EXPORT_SYMBOL(cmdq_pkt_clear_event); static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { - int err; + struct cmdq_instruction *inst; + + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; - /* insert EOC and generate IRQ for each command iteration */ - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_EOC, 0, CMDQ_EOC_IRQ_EN); + inst->op = CMDQ_CODE_EOC; + inst->value = CMDQ_EOC_IRQ_EN; - /* JUMP to end */ - err |= cmdq_pkt_append_command(pkt, CMDQ_CODE_JUMP, 0, CMDQ_JUMP_PASS); + inst = cmdq_pkt_append_command(pkt); + if (!inst) + return -ENOMEM; + + inst->op = CMDQ_CODE_JUMP; + inst->value = CMDQ_JUMP_PASS; - return err; + return 0; } static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data) diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index 911475da7a53..c8adedefaf42 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