| Message ID | 20221201110500.4017889-4-danishanwar@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Introduce PRU remoteproc consumer API | expand |
Danish, On 01/12/2022 13:04, MD Danish Anwar wrote: > Introducing enum pruss_pru_id for PRU Core Identifiers. > PRUSS_PRU0 indicates PRU Core 0. > PRUSS_PRU1 indicates PRU Core 1. > PRUSS_NUM_PRUS indicates the total number of PRU Cores. > > Signed-off-by: MD Danish Anwar <danishanwar@ti.com> > --- > drivers/remoteproc/pru_rproc.c | 16 ++++++++++++---- > include/linux/pruss.h | 19 +++++++++++++++++-- > 2 files changed, 29 insertions(+), 6 deletions(-) > > diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c > index b4498a505108..7d4ed39b3772 100644 > --- a/drivers/remoteproc/pru_rproc.c > +++ b/drivers/remoteproc/pru_rproc.c > @@ -186,6 +186,7 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) > * pru_rproc_get() - get the PRU rproc instance from a device node > * @np: the user/client device node > * @index: index to use for the ti,prus property > + * @pru_id: optional pointer to return the PRU remoteproc processor id > * > * This function looks through a client device node's "ti,prus" property at > * index @index and returns the rproc handle for a valid PRU remote processor if > @@ -193,13 +194,17 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) > * time. Caller must call pru_rproc_put() when done with using the rproc, not > * required if the function returns a failure. > * > + * When optional @pru_id pointer is passed the PRU remoteproc processor id is > + * returned. > + * > * Return: rproc handle on success, and an ERR_PTR on failure using one > * of the following error values > * -ENODEV if device is not found > * -EBUSY if PRU is already acquired by anyone > * -EPROBE_DEFER is PRU device is not probed yet > */ > -struct rproc *pru_rproc_get(struct device_node *np, int index) > +struct rproc *pru_rproc_get(struct device_node *np, int index, > + enum pruss_pru_id *pru_id) You just introduced pru_rproc_get() in the previous patch and are now updating it here. Instead, what you need to do is, first introduce enum pruss_pru_id and make any changes to code using hardcoded values for PRU ID. This patch will have to introduce <linux/pruss.h> as it doesn't exist yet. Hopefully this clears the chicken/egg situation. Then introduce pru_rproc_get() patch with the final desired arguments. > { > struct rproc *rproc; > struct pru_rproc *pru; > @@ -226,6 +231,9 @@ struct rproc *pru_rproc_get(struct device_node *np, int index) > > mutex_unlock(&pru->lock); > > + if (pru_id) > + *pru_id = pru->id; > + > return rproc; > > err_no_rproc_handle: > @@ -556,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) > dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; > dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; > /* PRU1 has its local RAM addresses reversed */ > - if (pru->id == 1) > + if (pru->id == PRUSS_PRU1) > swap(dram0, dram1); > shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; > > @@ -865,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) > case RTU0_IRAM_ADDR_MASK: > fallthrough; > case PRU0_IRAM_ADDR_MASK: > - pru->id = 0; > + pru->id = PRUSS_PRU0; > break; > case TX_PRU1_IRAM_ADDR_MASK: > fallthrough; > case RTU1_IRAM_ADDR_MASK: > fallthrough; > case PRU1_IRAM_ADDR_MASK: > - pru->id = 1; > + pru->id = PRUSS_PRU1; > break; > default: > ret = -EINVAL; > diff --git a/include/linux/pruss.h b/include/linux/pruss.h > index 5c5d14b1249d..efe89c586b4b 100644 > --- a/include/linux/pruss.h > +++ b/include/linux/pruss.h > @@ -14,17 +14,32 @@ > > #define PRU_RPROC_DRVNAME "pru-rproc" > > +/** > + * enum pruss_pru_id - PRU core identifiers > + * @PRUSS_PRU0: PRU Core 0. > + * @PRUSS_PRU1: PRU Core 1. > + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. > + * > + */ > + > +enum pruss_pru_id { > + PRUSS_PRU0 = 0, > + PRUSS_PRU1, > + PRUSS_NUM_PRUS, > +}; > + > struct device_node; > > #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) > > -struct rproc *pru_rproc_get(struct device_node *np, int index); > +struct rproc *pru_rproc_get(struct device_node *np, int index, > + enum pruss_pru_id *pru_id); > void pru_rproc_put(struct rproc *rproc); > > #else > > static inline struct rproc * > -pru_rproc_get(struct device_node *np, int index) > +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) > { > return ERR_PTR(-EOPNOTSUPP); > } -- cheers, -roger
Hi Roger, On 01/12/22 5:28 pm, Roger Quadros wrote: > Danish, > > On 01/12/2022 13:04, MD Danish Anwar wrote: >> Introducing enum pruss_pru_id for PRU Core Identifiers. >> PRUSS_PRU0 indicates PRU Core 0. >> PRUSS_PRU1 indicates PRU Core 1. >> PRUSS_NUM_PRUS indicates the total number of PRU Cores. >> >> Signed-off-by: MD Danish Anwar <danishanwar@ti.com> >> --- >> drivers/remoteproc/pru_rproc.c | 16 ++++++++++++---- >> include/linux/pruss.h | 19 +++++++++++++++++-- >> 2 files changed, 29 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c >> index b4498a505108..7d4ed39b3772 100644 >> --- a/drivers/remoteproc/pru_rproc.c >> +++ b/drivers/remoteproc/pru_rproc.c >> @@ -186,6 +186,7 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) >> * pru_rproc_get() - get the PRU rproc instance from a device node >> * @np: the user/client device node >> * @index: index to use for the ti,prus property >> + * @pru_id: optional pointer to return the PRU remoteproc processor id >> * >> * This function looks through a client device node's "ti,prus" property at >> * index @index and returns the rproc handle for a valid PRU remote processor if >> @@ -193,13 +194,17 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) >> * time. Caller must call pru_rproc_put() when done with using the rproc, not >> * required if the function returns a failure. >> * >> + * When optional @pru_id pointer is passed the PRU remoteproc processor id is >> + * returned. >> + * >> * Return: rproc handle on success, and an ERR_PTR on failure using one >> * of the following error values >> * -ENODEV if device is not found >> * -EBUSY if PRU is already acquired by anyone >> * -EPROBE_DEFER is PRU device is not probed yet >> */ >> -struct rproc *pru_rproc_get(struct device_node *np, int index) >> +struct rproc *pru_rproc_get(struct device_node *np, int index, >> + enum pruss_pru_id *pru_id) > > You just introduced pru_rproc_get() in the previous patch and are > now updating it here. > That's because there is dependency between these two patches. The enum pruss_pru_id is declared inside linux/pruss.h file which is introduced in pru_rproc_get() patch. But pru_rproc_get() and pru_rproc_put() APIs use the enum as function argument. So I decided to keep pru_rproc_get() patch as second patch of this series(as it introduces <linux/pruss.h> where eventually the enum will be introduced). Then I kept the enum introduction patch as third patch of the series and with this patch I modified pru_rproc_get() API by adding pru_id field in the function argument. > Instead, what you need to do is, first introduce enum pruss_pru_id > and make any changes to code using hardcoded values for PRU ID. > This patch will have to introduce <linux/pruss.h> as it doesn't exist yet. This also came to my mind. But I thought introduction of enum pruss_pru_id patch should just introduce the enum and modify APIs which uses the enum accordingly. I wanted to keep the introduction of <linux/pruss.h> file with the pru_rproc_get() patch as it was. That's why I kept pru_rproc_get() patch ahead of enum patch. > Hopefully this clears the chicken/egg situation. > > Then introduce pru_rproc_get() patch with the final desired arguments. > >> { >> struct rproc *rproc; >> struct pru_rproc *pru; >> @@ -226,6 +231,9 @@ struct rproc *pru_rproc_get(struct device_node *np, int index) >> >> mutex_unlock(&pru->lock); >> >> + if (pru_id) >> + *pru_id = pru->id; >> + >> return rproc; >> >> err_no_rproc_handle: >> @@ -556,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) >> dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; >> dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; >> /* PRU1 has its local RAM addresses reversed */ >> - if (pru->id == 1) >> + if (pru->id == PRUSS_PRU1) >> swap(dram0, dram1); >> shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; >> >> @@ -865,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) >> case RTU0_IRAM_ADDR_MASK: >> fallthrough; >> case PRU0_IRAM_ADDR_MASK: >> - pru->id = 0; >> + pru->id = PRUSS_PRU0; >> break; >> case TX_PRU1_IRAM_ADDR_MASK: >> fallthrough; >> case RTU1_IRAM_ADDR_MASK: >> fallthrough; >> case PRU1_IRAM_ADDR_MASK: >> - pru->id = 1; >> + pru->id = PRUSS_PRU1; >> break; >> default: >> ret = -EINVAL; >> diff --git a/include/linux/pruss.h b/include/linux/pruss.h >> index 5c5d14b1249d..efe89c586b4b 100644 >> --- a/include/linux/pruss.h >> +++ b/include/linux/pruss.h >> @@ -14,17 +14,32 @@ >> >> #define PRU_RPROC_DRVNAME "pru-rproc" >> >> +/** >> + * enum pruss_pru_id - PRU core identifiers >> + * @PRUSS_PRU0: PRU Core 0. >> + * @PRUSS_PRU1: PRU Core 1. >> + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. >> + * >> + */ >> + >> +enum pruss_pru_id { >> + PRUSS_PRU0 = 0, >> + PRUSS_PRU1, >> + PRUSS_NUM_PRUS, >> +}; >> + >> struct device_node; >> >> #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) >> >> -struct rproc *pru_rproc_get(struct device_node *np, int index); >> +struct rproc *pru_rproc_get(struct device_node *np, int index, >> + enum pruss_pru_id *pru_id); >> void pru_rproc_put(struct rproc *rproc); >> >> #else >> >> static inline struct rproc * >> -pru_rproc_get(struct device_node *np, int index) >> +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) >> { >> return ERR_PTR(-EOPNOTSUPP); >> } > > -- > cheers, > -roger Thanks, Danish.
Hi Roger, On 01/12/22 19:13, Md Danish Anwar wrote: > Hi Roger, > > On 01/12/22 5:28 pm, Roger Quadros wrote: >> Danish, >> >> On 01/12/2022 13:04, MD Danish Anwar wrote: >>> Introducing enum pruss_pru_id for PRU Core Identifiers. >>> PRUSS_PRU0 indicates PRU Core 0. >>> PRUSS_PRU1 indicates PRU Core 1. >>> PRUSS_NUM_PRUS indicates the total number of PRU Cores. >>> >>> Signed-off-by: MD Danish Anwar <danishanwar@ti.com> >>> --- >>> drivers/remoteproc/pru_rproc.c | 16 ++++++++++++---- >>> include/linux/pruss.h | 19 +++++++++++++++++-- >>> 2 files changed, 29 insertions(+), 6 deletions(-) >>> >>> diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c >>> index b4498a505108..7d4ed39b3772 100644 >>> --- a/drivers/remoteproc/pru_rproc.c >>> +++ b/drivers/remoteproc/pru_rproc.c >>> @@ -186,6 +186,7 @@ static struct rproc *__pru_rproc_get(struct device_node >>> *np, int index) >>> * pru_rproc_get() - get the PRU rproc instance from a device node >>> * @np: the user/client device node >>> * @index: index to use for the ti,prus property >>> + * @pru_id: optional pointer to return the PRU remoteproc processor id >>> * >>> * This function looks through a client device node's "ti,prus" property at >>> * index @index and returns the rproc handle for a valid PRU remote >>> processor if >>> @@ -193,13 +194,17 @@ static struct rproc *__pru_rproc_get(struct >>> device_node *np, int index) >>> * time. Caller must call pru_rproc_put() when done with using the rproc, not >>> * required if the function returns a failure. >>> * >>> + * When optional @pru_id pointer is passed the PRU remoteproc processor id is >>> + * returned. >>> + * >>> * Return: rproc handle on success, and an ERR_PTR on failure using one >>> * of the following error values >>> * -ENODEV if device is not found >>> * -EBUSY if PRU is already acquired by anyone >>> * -EPROBE_DEFER is PRU device is not probed yet >>> */ >>> -struct rproc *pru_rproc_get(struct device_node *np, int index) >>> +struct rproc *pru_rproc_get(struct device_node *np, int index, >>> + enum pruss_pru_id *pru_id) >> >> You just introduced pru_rproc_get() in the previous patch and are >> now updating it here. >> > > That's because there is dependency between these two patches. The enum > pruss_pru_id is declared inside linux/pruss.h file which is introduced in > pru_rproc_get() patch. But pru_rproc_get() and pru_rproc_put() APIs use the > enum as function argument. So I decided to keep pru_rproc_get() patch as second > patch of this series(as it introduces <linux/pruss.h> where eventually the enum > will be introduced). > > Then I kept the enum introduction patch as third patch of the series and with > this patch I modified pru_rproc_get() API by adding pru_id field in the > function argument. > >> Instead, what you need to do is, first introduce enum pruss_pru_id >> and make any changes to code using hardcoded values for PRU ID. >> This patch will have to introduce <linux/pruss.h> as it doesn't exist yet. > I will be posting this series again with your suggestion by keeping enum patch first and then the pru_rproc_get() patch. > This also came to my mind. But I thought introduction of enum pruss_pru_id > patch should just introduce the enum and modify APIs which uses the enum > accordingly. I wanted to keep the introduction of <linux/pruss.h> file with the > pru_rproc_get() patch as it was. That's why I kept pru_rproc_get() patch ahead > of enum patch. > >> Hopefully this clears the chicken/egg situation. >> >> Then introduce pru_rproc_get() patch with the final desired arguments. >> >>> { >>> struct rproc *rproc; >>> struct pru_rproc *pru; >>> @@ -226,6 +231,9 @@ struct rproc *pru_rproc_get(struct device_node *np, int >>> index) >>> mutex_unlock(&pru->lock); >>> + if (pru_id) >>> + *pru_id = pru->id; >>> + >>> return rproc; >>> err_no_rproc_handle: >>> @@ -556,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 >>> da, size_t len) >>> dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; >>> dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; >>> /* PRU1 has its local RAM addresses reversed */ >>> - if (pru->id == 1) >>> + if (pru->id == PRUSS_PRU1) >>> swap(dram0, dram1); >>> shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; >>> @@ -865,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) >>> case RTU0_IRAM_ADDR_MASK: >>> fallthrough; >>> case PRU0_IRAM_ADDR_MASK: >>> - pru->id = 0; >>> + pru->id = PRUSS_PRU0; >>> break; >>> case TX_PRU1_IRAM_ADDR_MASK: >>> fallthrough; >>> case RTU1_IRAM_ADDR_MASK: >>> fallthrough; >>> case PRU1_IRAM_ADDR_MASK: >>> - pru->id = 1; >>> + pru->id = PRUSS_PRU1; >>> break; >>> default: >>> ret = -EINVAL; >>> diff --git a/include/linux/pruss.h b/include/linux/pruss.h >>> index 5c5d14b1249d..efe89c586b4b 100644 >>> --- a/include/linux/pruss.h >>> +++ b/include/linux/pruss.h >>> @@ -14,17 +14,32 @@ >>> #define PRU_RPROC_DRVNAME "pru-rproc" >>> +/** >>> + * enum pruss_pru_id - PRU core identifiers >>> + * @PRUSS_PRU0: PRU Core 0. >>> + * @PRUSS_PRU1: PRU Core 1. >>> + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. >>> + * >>> + */ >>> + >>> +enum pruss_pru_id { >>> + PRUSS_PRU0 = 0, >>> + PRUSS_PRU1, >>> + PRUSS_NUM_PRUS, >>> +}; >>> + >>> struct device_node; >>> #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) >>> -struct rproc *pru_rproc_get(struct device_node *np, int index); >>> +struct rproc *pru_rproc_get(struct device_node *np, int index, >>> + enum pruss_pru_id *pru_id); >>> void pru_rproc_put(struct rproc *rproc); >>> #else >>> static inline struct rproc * >>> -pru_rproc_get(struct device_node *np, int index) >>> +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) >>> { >>> return ERR_PTR(-EOPNOTSUPP); >>> } >> >> -- >> cheers, >> -roger > > Thanks, > Danish. Thanks, Danish.
diff --git a/drivers/remoteproc/pru_rproc.c b/drivers/remoteproc/pru_rproc.c index b4498a505108..7d4ed39b3772 100644 --- a/drivers/remoteproc/pru_rproc.c +++ b/drivers/remoteproc/pru_rproc.c @@ -186,6 +186,7 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) * pru_rproc_get() - get the PRU rproc instance from a device node * @np: the user/client device node * @index: index to use for the ti,prus property + * @pru_id: optional pointer to return the PRU remoteproc processor id * * This function looks through a client device node's "ti,prus" property at * index @index and returns the rproc handle for a valid PRU remote processor if @@ -193,13 +194,17 @@ static struct rproc *__pru_rproc_get(struct device_node *np, int index) * time. Caller must call pru_rproc_put() when done with using the rproc, not * required if the function returns a failure. * + * When optional @pru_id pointer is passed the PRU remoteproc processor id is + * returned. + * * Return: rproc handle on success, and an ERR_PTR on failure using one * of the following error values * -ENODEV if device is not found * -EBUSY if PRU is already acquired by anyone * -EPROBE_DEFER is PRU device is not probed yet */ -struct rproc *pru_rproc_get(struct device_node *np, int index) +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id) { struct rproc *rproc; struct pru_rproc *pru; @@ -226,6 +231,9 @@ struct rproc *pru_rproc_get(struct device_node *np, int index) mutex_unlock(&pru->lock); + if (pru_id) + *pru_id = pru->id; + return rproc; err_no_rproc_handle: @@ -556,7 +564,7 @@ static void *pru_d_da_to_va(struct pru_rproc *pru, u32 da, size_t len) dram0 = pruss->mem_regions[PRUSS_MEM_DRAM0]; dram1 = pruss->mem_regions[PRUSS_MEM_DRAM1]; /* PRU1 has its local RAM addresses reversed */ - if (pru->id == 1) + if (pru->id == PRUSS_PRU1) swap(dram0, dram1); shrd_ram = pruss->mem_regions[PRUSS_MEM_SHRD_RAM2]; @@ -865,14 +873,14 @@ static int pru_rproc_set_id(struct pru_rproc *pru) case RTU0_IRAM_ADDR_MASK: fallthrough; case PRU0_IRAM_ADDR_MASK: - pru->id = 0; + pru->id = PRUSS_PRU0; break; case TX_PRU1_IRAM_ADDR_MASK: fallthrough; case RTU1_IRAM_ADDR_MASK: fallthrough; case PRU1_IRAM_ADDR_MASK: - pru->id = 1; + pru->id = PRUSS_PRU1; break; default: ret = -EINVAL; diff --git a/include/linux/pruss.h b/include/linux/pruss.h index 5c5d14b1249d..efe89c586b4b 100644 --- a/include/linux/pruss.h +++ b/include/linux/pruss.h @@ -14,17 +14,32 @@ #define PRU_RPROC_DRVNAME "pru-rproc" +/** + * enum pruss_pru_id - PRU core identifiers + * @PRUSS_PRU0: PRU Core 0. + * @PRUSS_PRU1: PRU Core 1. + * @PRUSS_NUM_PRUS: Total number of PRU Cores available. + * + */ + +enum pruss_pru_id { + PRUSS_PRU0 = 0, + PRUSS_PRU1, + PRUSS_NUM_PRUS, +}; + struct device_node; #if IS_ENABLED(CONFIG_PRU_REMOTEPROC) -struct rproc *pru_rproc_get(struct device_node *np, int index); +struct rproc *pru_rproc_get(struct device_node *np, int index, + enum pruss_pru_id *pru_id); void pru_rproc_put(struct rproc *rproc); #else static inline struct rproc * -pru_rproc_get(struct device_node *np, int index) +pru_rproc_get(struct device_node *np, int index, enum pruss_pru_id *pru_id) { return ERR_PTR(-EOPNOTSUPP); }
Introducing enum pruss_pru_id for PRU Core Identifiers. PRUSS_PRU0 indicates PRU Core 0. PRUSS_PRU1 indicates PRU Core 1. PRUSS_NUM_PRUS indicates the total number of PRU Cores. Signed-off-by: MD Danish Anwar <danishanwar@ti.com> --- drivers/remoteproc/pru_rproc.c | 16 ++++++++++++---- include/linux/pruss.h | 19 +++++++++++++++++-- 2 files changed, 29 insertions(+), 6 deletions(-)