Message ID | 20191121015410.18852-4-bibby.hsieh@mediatek.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | support gce on mt8183 platform | expand |
Hi, Bibby: On Thu, 2019-11-21 at 09:54 +0800, Bibby Hsieh wrote: > Define an instruction structure for gce driver to append command. > This structure can make the client's code more readability. Even though I do not like pass struct parameter by value, but struct cmdq_instruction is just a 64 bits integer and would not be modified in cmdq_pkt_append_command(), so Reviewed-by: CK Hu <ck.hu@mediatek.com> > > Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> > --- > drivers/soc/mediatek/mtk-cmdq-helper.c | 73 ++++++++++++++++-------- > include/linux/mailbox/mtk-cmdq-mailbox.h | 10 ++++ > 2 files changed, 59 insertions(+), 24 deletions(-) > > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c > index c8fb69787649..11bfcc150ebd 100644 > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c > @@ -9,12 +9,24 @@ > #include <linux/mailbox_controller.h> > #include <linux/soc/mediatek/mtk-cmdq.h> > > -#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 +122,10 @@ 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, > + struct cmdq_instruction inst) > { > - u64 *cmd_ptr; > + struct cmdq_instruction *cmd_ptr; > > if (unlikely(pkt->cmd_buf_size + CMDQ_INST_SIZE > pkt->buf_size)) { > /* > @@ -129,8 +141,9 @@ 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; > + *cmd_ptr = inst; > pkt->cmd_buf_size += CMDQ_INST_SIZE; > > return 0; > @@ -138,21 +151,28 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, > > 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; > > - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WRITE, arg_a, value); > + inst.op = CMDQ_CODE_WRITE; > + inst.value = value; > + inst.offset = offset; > + inst.subsys = subsys; > + > + return cmdq_pkt_append_command(pkt, inst); > } > 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; > + struct cmdq_instruction inst = { {0} }; > + u16 offset_mask = offset; > int err; > > if (mask != 0xffffffff) { > - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask); > + inst.op = CMDQ_CODE_MASK; > + inst.mask = ~mask; > + err = cmdq_pkt_append_command(pkt, inst); > if (err < 0) > return err; > > @@ -166,45 +186,50 @@ EXPORT_SYMBOL(cmdq_pkt_write_mask); > > int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) > { > - u32 arg_b; > + struct cmdq_instruction inst = { {0} }; > > 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.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 cmdq_pkt_append_command(pkt, inst); > } > EXPORT_SYMBOL(cmdq_pkt_wfe); > > int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) > { > + struct cmdq_instruction inst = { {0} }; > + > if (event >= CMDQ_MAX_EVENT) > return -EINVAL; > > - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, > - CMDQ_WFE_UPDATE); > + inst.op = CMDQ_CODE_WFE; > + inst.value = CMDQ_WFE_UPDATE; > + inst.event = event; > + > + return cmdq_pkt_append_command(pkt, inst); > } > EXPORT_SYMBOL(cmdq_pkt_clear_event); > > static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) > { > + struct cmdq_instruction inst = { {0} }; > 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); > + inst.op = CMDQ_CODE_EOC; > + inst.value = CMDQ_EOC_IRQ_EN; > + err = cmdq_pkt_append_command(pkt, inst); > if (err < 0) > return err; > > /* JUMP to end */ > - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_JUMP, 0, CMDQ_JUMP_PASS); > + inst.op = CMDQ_CODE_JUMP; > + inst.value = CMDQ_JUMP_PASS; > + err = cmdq_pkt_append_command(pkt, inst); > > return err; > } > diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h > index e6f54ef6698b..678760548791 100644 > --- a/include/linux/mailbox/mtk-cmdq-mailbox.h > +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h > @@ -20,6 +20,16 @@ > #define CMDQ_WFE_WAIT BIT(15) > #define CMDQ_WFE_WAIT_VALUE 0x1 > > +/* > + * 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 > + */ > +#define CMDQ_WFE_OPTION (CMDQ_WFE_UPDATE | CMDQ_WFE_WAIT | \ > + CMDQ_WFE_WAIT_VALUE) > + > /** cmdq event maximum */ > #define CMDQ_MAX_EVENT 0x3ff >
On 22/11/2019 09:30, CK Hu wrote: > Hi, Bibby: > > On Thu, 2019-11-21 at 09:54 +0800, Bibby Hsieh wrote: >> Define an instruction structure for gce driver to append command. >> This structure can make the client's code more readability. > > Even though I do not like pass struct parameter by value, but struct > cmdq_instruction is just a 64 bits integer and would not be modified in > cmdq_pkt_append_command(), so > > Reviewed-by: CK Hu <ck.hu@mediatek.com> > Applied to v5.5-next/soc Thanks! >> >> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> >> --- >> drivers/soc/mediatek/mtk-cmdq-helper.c | 73 ++++++++++++++++-------- >> include/linux/mailbox/mtk-cmdq-mailbox.h | 10 ++++ >> 2 files changed, 59 insertions(+), 24 deletions(-) >> >> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c >> index c8fb69787649..11bfcc150ebd 100644 >> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c >> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c >> @@ -9,12 +9,24 @@ >> #include <linux/mailbox_controller.h> >> #include <linux/soc/mediatek/mtk-cmdq.h> >> >> -#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 +122,10 @@ 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, >> + struct cmdq_instruction inst) >> { >> - u64 *cmd_ptr; >> + struct cmdq_instruction *cmd_ptr; >> >> if (unlikely(pkt->cmd_buf_size + CMDQ_INST_SIZE > pkt->buf_size)) { >> /* >> @@ -129,8 +141,9 @@ 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; >> + *cmd_ptr = inst; >> pkt->cmd_buf_size += CMDQ_INST_SIZE; >> >> return 0; >> @@ -138,21 +151,28 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, >> >> 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; >> >> - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WRITE, arg_a, value); >> + inst.op = CMDQ_CODE_WRITE; >> + inst.value = value; >> + inst.offset = offset; >> + inst.subsys = subsys; >> + >> + return cmdq_pkt_append_command(pkt, inst); >> } >> 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; >> + struct cmdq_instruction inst = { {0} }; >> + u16 offset_mask = offset; >> int err; >> >> if (mask != 0xffffffff) { >> - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask); >> + inst.op = CMDQ_CODE_MASK; >> + inst.mask = ~mask; >> + err = cmdq_pkt_append_command(pkt, inst); >> if (err < 0) >> return err; >> >> @@ -166,45 +186,50 @@ EXPORT_SYMBOL(cmdq_pkt_write_mask); >> >> int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) >> { >> - u32 arg_b; >> + struct cmdq_instruction inst = { {0} }; >> >> 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.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 cmdq_pkt_append_command(pkt, inst); >> } >> EXPORT_SYMBOL(cmdq_pkt_wfe); >> >> int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) >> { >> + struct cmdq_instruction inst = { {0} }; >> + >> if (event >= CMDQ_MAX_EVENT) >> return -EINVAL; >> >> - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, >> - CMDQ_WFE_UPDATE); >> + inst.op = CMDQ_CODE_WFE; >> + inst.value = CMDQ_WFE_UPDATE; >> + inst.event = event; >> + >> + return cmdq_pkt_append_command(pkt, inst); >> } >> EXPORT_SYMBOL(cmdq_pkt_clear_event); >> >> static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) >> { >> + struct cmdq_instruction inst = { {0} }; >> 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); >> + inst.op = CMDQ_CODE_EOC; >> + inst.value = CMDQ_EOC_IRQ_EN; >> + err = cmdq_pkt_append_command(pkt, inst); >> if (err < 0) >> return err; >> >> /* JUMP to end */ >> - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_JUMP, 0, CMDQ_JUMP_PASS); >> + inst.op = CMDQ_CODE_JUMP; >> + inst.value = CMDQ_JUMP_PASS; >> + err = cmdq_pkt_append_command(pkt, inst); >> >> return err; >> } >> diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h >> index e6f54ef6698b..678760548791 100644 >> --- a/include/linux/mailbox/mtk-cmdq-mailbox.h >> +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h >> @@ -20,6 +20,16 @@ >> #define CMDQ_WFE_WAIT BIT(15) >> #define CMDQ_WFE_WAIT_VALUE 0x1 >> >> +/* >> + * 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 >> + */ >> +#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/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c index c8fb69787649..11bfcc150ebd 100644 --- a/drivers/soc/mediatek/mtk-cmdq-helper.c +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c @@ -9,12 +9,24 @@ #include <linux/mailbox_controller.h> #include <linux/soc/mediatek/mtk-cmdq.h> -#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 +122,10 @@ 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, + struct cmdq_instruction inst) { - u64 *cmd_ptr; + struct cmdq_instruction *cmd_ptr; if (unlikely(pkt->cmd_buf_size + CMDQ_INST_SIZE > pkt->buf_size)) { /* @@ -129,8 +141,9 @@ 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; + *cmd_ptr = inst; pkt->cmd_buf_size += CMDQ_INST_SIZE; return 0; @@ -138,21 +151,28 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt, enum cmdq_code code, 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; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WRITE, arg_a, value); + inst.op = CMDQ_CODE_WRITE; + inst.value = value; + inst.offset = offset; + inst.subsys = subsys; + + return cmdq_pkt_append_command(pkt, inst); } 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; + struct cmdq_instruction inst = { {0} }; + u16 offset_mask = offset; int err; if (mask != 0xffffffff) { - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_MASK, 0, ~mask); + inst.op = CMDQ_CODE_MASK; + inst.mask = ~mask; + err = cmdq_pkt_append_command(pkt, inst); if (err < 0) return err; @@ -166,45 +186,50 @@ EXPORT_SYMBOL(cmdq_pkt_write_mask); int cmdq_pkt_wfe(struct cmdq_pkt *pkt, u16 event) { - u32 arg_b; + struct cmdq_instruction inst = { {0} }; 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.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 cmdq_pkt_append_command(pkt, inst); } EXPORT_SYMBOL(cmdq_pkt_wfe); int cmdq_pkt_clear_event(struct cmdq_pkt *pkt, u16 event) { + struct cmdq_instruction inst = { {0} }; + if (event >= CMDQ_MAX_EVENT) return -EINVAL; - return cmdq_pkt_append_command(pkt, CMDQ_CODE_WFE, event, - CMDQ_WFE_UPDATE); + inst.op = CMDQ_CODE_WFE; + inst.value = CMDQ_WFE_UPDATE; + inst.event = event; + + return cmdq_pkt_append_command(pkt, inst); } EXPORT_SYMBOL(cmdq_pkt_clear_event); static int cmdq_pkt_finalize(struct cmdq_pkt *pkt) { + struct cmdq_instruction inst = { {0} }; 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); + inst.op = CMDQ_CODE_EOC; + inst.value = CMDQ_EOC_IRQ_EN; + err = cmdq_pkt_append_command(pkt, inst); if (err < 0) return err; /* JUMP to end */ - err = cmdq_pkt_append_command(pkt, CMDQ_CODE_JUMP, 0, CMDQ_JUMP_PASS); + inst.op = CMDQ_CODE_JUMP; + inst.value = CMDQ_JUMP_PASS; + err = cmdq_pkt_append_command(pkt, inst); return err; } diff --git a/include/linux/mailbox/mtk-cmdq-mailbox.h b/include/linux/mailbox/mtk-cmdq-mailbox.h index e6f54ef6698b..678760548791 100644 --- a/include/linux/mailbox/mtk-cmdq-mailbox.h +++ b/include/linux/mailbox/mtk-cmdq-mailbox.h @@ -20,6 +20,16 @@ #define CMDQ_WFE_WAIT BIT(15) #define CMDQ_WFE_WAIT_VALUE 0x1 +/* + * 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 + */ +#define CMDQ_WFE_OPTION (CMDQ_WFE_UPDATE | CMDQ_WFE_WAIT | \ + CMDQ_WFE_WAIT_VALUE) + /** cmdq event maximum */ #define CMDQ_MAX_EVENT 0x3ff
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 <bibby.hsieh@mediatek.com> --- drivers/soc/mediatek/mtk-cmdq-helper.c | 73 ++++++++++++++++-------- include/linux/mailbox/mtk-cmdq-mailbox.h | 10 ++++ 2 files changed, 59 insertions(+), 24 deletions(-)