diff mbox series

[v4,11/13] soc: mediatek: cmdq: add jump function

Message ID 1583233125-7827-12-git-send-email-dennis-yc.hsieh@mediatek.com (mailing list archive)
State New, archived
Headers show
Series support gce on mt6779 platform | expand

Commit Message

Dennis-YC Hsieh March 3, 2020, 10:58 a.m. UTC 
Add jump function so that client can jump to any address which
contains instruction.

Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c | 12 ++++++++++++
 include/linux/soc/mediatek/mtk-cmdq.h  | 11 +++++++++++
 2 files changed, 23 insertions(+)

Comments

CK Hu (胡俊光) March 4, 2020, 2:57 a.m. UTC | #1 
Hi, Dennis:

On Tue, 2020-03-03 at 18:58 +0800, Dennis YC Hsieh wrote:
> Add jump function so that client can jump to any address which
> contains instruction.
> 
> Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
> ---
>  drivers/soc/mediatek/mtk-cmdq-helper.c | 12 ++++++++++++
>  include/linux/soc/mediatek/mtk-cmdq.h  | 11 +++++++++++
>  2 files changed, 23 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 59bc1164b411..f27c67034880 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -372,6 +372,18 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
>  }
>  EXPORT_SYMBOL(cmdq_pkt_assign);
>  
> +int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr)
> +{
> +	struct cmdq_instruction inst = { {0} };
> +
> +	inst.op = CMDQ_CODE_JUMP;
> +	inst.offset = 1;

Symbolize the value '1'.

Regards,
CK

> +	inst.value = addr >>
> +		cmdq_mbox_shift(((struct cmdq_client *)pkt->cl)->chan);
> +	return cmdq_pkt_append_command(pkt, inst);
> +}
> +EXPORT_SYMBOL(cmdq_pkt_jump);
> +
>  int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
>  {
>  	struct cmdq_instruction inst = { {0} };
> diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> index 99e77155f967..1a6c56f3bec1 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -213,6 +213,17 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
>   */
>  int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
>  
> +/**
> + * cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
> + *		     to execute an instruction that change current thread PC to
> + *		     a physical address which should contains more instruction.
> + * @pkt:        the CMDQ packet
> + * @addr:       physical address of target instruction buffer
> + *
> + * Return: 0 for success; else the error code is returned
> + */
> +int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
> +
>  /**
>   * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
>   * @pkt:	the CMDQ packet
Dennis-YC Hsieh March 5, 2020, 12:49 a.m. UTC | #2 
Hi CK,

Thanks for your comment.

On Wed, 2020-03-04 at 10:57 +0800, CK Hu wrote:
> Hi, Dennis:
> 
> On Tue, 2020-03-03 at 18:58 +0800, Dennis YC Hsieh wrote:
> > Add jump function so that client can jump to any address which
> > contains instruction.
> > 
> > Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
> > ---
> >  drivers/soc/mediatek/mtk-cmdq-helper.c | 12 ++++++++++++
> >  include/linux/soc/mediatek/mtk-cmdq.h  | 11 +++++++++++
> >  2 files changed, 23 insertions(+)
> > 
> > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > index 59bc1164b411..f27c67034880 100644
> > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > @@ -372,6 +372,18 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
> >  }
> >  EXPORT_SYMBOL(cmdq_pkt_assign);
> >  
> > +int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr)
> > +{
> > +	struct cmdq_instruction inst = { {0} };
> > +
> > +	inst.op = CMDQ_CODE_JUMP;
> > +	inst.offset = 1;
> 
> Symbolize the value '1'.

miss in v4, will add in next version, thanks.


Regards,
Dennis


> 
> Regards,
> CK
> 
> > +	inst.value = addr >>
> > +		cmdq_mbox_shift(((struct cmdq_client *)pkt->cl)->chan);
> > +	return cmdq_pkt_append_command(pkt, inst);
> > +}
> > +EXPORT_SYMBOL(cmdq_pkt_jump);
> > +
> >  int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> >  {
> >  	struct cmdq_instruction inst = { {0} };
> > diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> > index 99e77155f967..1a6c56f3bec1 100644
> > --- a/include/linux/soc/mediatek/mtk-cmdq.h
> > +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> > @@ -213,6 +213,17 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
> >   */
> >  int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
> >  
> > +/**
> > + * cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
> > + *		     to execute an instruction that change current thread PC to
> > + *		     a physical address which should contains more instruction.
> > + * @pkt:        the CMDQ packet
> > + * @addr:       physical address of target instruction buffer
> > + *
> > + * Return: 0 for success; else the error code is returned
> > + */
> > +int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
> > +
> >  /**
> >   * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
> >   * @pkt:	the CMDQ packet
> 
>
diff mbox series

Patch

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 59bc1164b411..f27c67034880 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -372,6 +372,18 @@  int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
 }
 EXPORT_SYMBOL(cmdq_pkt_assign);
 
+int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr)
+{
+	struct cmdq_instruction inst = { {0} };
+
+	inst.op = CMDQ_CODE_JUMP;
+	inst.offset = 1;
+	inst.value = addr >>
+		cmdq_mbox_shift(((struct cmdq_client *)pkt->cl)->chan);
+	return cmdq_pkt_append_command(pkt, inst);
+}
+EXPORT_SYMBOL(cmdq_pkt_jump);
+
 int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
 {
 	struct cmdq_instruction inst = { {0} };
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 99e77155f967..1a6c56f3bec1 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -213,6 +213,17 @@  int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
  */
 int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
 
+/**
+ * cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
+ *		     to execute an instruction that change current thread PC to
+ *		     a physical address which should contains more instruction.
+ * @pkt:        the CMDQ packet
+ * @addr:       physical address of target instruction buffer
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
+
 /**
  * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
  * @pkt:	the CMDQ packet