| Message ID | 20191028124238.19224-6-t-kristo@ti.com |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On Mon 28 Oct 05:42 PDT 2019, Tero Kristo wrote: > From: Suman Anna <s-anna@ti.com> > > The OMAP remoteproc driver has been enhanced to parse and store > the kernel mappings for different internal RAM memories that may > be present within each remote processor IP subsystem. Different > devices have varying memories present on current SoCs. The current > support handles the L2RAM for all IPU devices on OMAP4+ SoCs. The > DSPs on OMAP4/OMAP5 only have Unicaches and do not have any L1 or > L2 RAM memories. > > IPUs are expected to have the L2RAM at a fixed device address of > 0x20000000, based on the current limitations on Attribute MMU > configurations. > > NOTE: > The current logic doesn't handle the parsing of memories for DRA7 > remoteproc devices, and will be added alongside the DRA7 support. > > Signed-off-by: Suman Anna <s-anna@ti.com> > Signed-off-by: Tero Kristo <t-kristo@ti.com> > --- > drivers/remoteproc/omap_remoteproc.c | 69 ++++++++++++++++++++++++++++ > 1 file changed, 69 insertions(+) > > diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c > index a10377547533..bbd6ff360e10 100644 > --- a/drivers/remoteproc/omap_remoteproc.c > +++ b/drivers/remoteproc/omap_remoteproc.c > @@ -29,6 +29,8 @@ > #include "omap_remoteproc.h" > #include "remoteproc_internal.h" > > +#define OMAP_RPROC_IPU_L2RAM_DEV_ADDR (0x20000000) > + > /** > * struct omap_rproc_boot_data - boot data structure for the DSP omap rprocs > * @syscon: regmap handle for the system control configuration module > @@ -39,11 +41,27 @@ struct omap_rproc_boot_data { > unsigned int boot_reg; > }; > > +/* > + * struct omap_rproc_mem - internal memory structure > + * @cpu_addr: MPU virtual address of the memory region > + * @bus_addr: bus address used to access the memory region > + * @dev_addr: device address of the memory region from DSP view > + * @size: size of the memory region > + */ > +struct omap_rproc_mem { > + void __iomem *cpu_addr; > + phys_addr_t bus_addr; > + u32 dev_addr; > + size_t size; > +}; > + > /** > * struct omap_rproc - omap remote processor state > * @mbox: mailbox channel handle > * @client: mailbox client to request the mailbox channel > * @boot_data: boot data structure for setting processor boot address > + * @mem: internal memory regions data > + * @num_mems: number of internal memory regions > * @rproc: rproc handle > * @reset: reset handle > */ > @@ -51,6 +69,8 @@ struct omap_rproc { > struct mbox_chan *mbox; > struct mbox_client client; > struct omap_rproc_boot_data *boot_data; > + struct omap_rproc_mem *mem; > + int num_mems; > struct rproc *rproc; > struct reset_control *reset; > }; > @@ -307,6 +327,51 @@ static int omap_rproc_get_boot_data(struct platform_device *pdev, > return 0; > } > > +static int omap_rproc_of_get_internal_memories(struct platform_device *pdev, > + struct rproc *rproc) > +{ > + static const char * const mem_names[] = {"l2ram"}; > + struct device_node *np = pdev->dev.of_node; > + struct omap_rproc *oproc = rproc->priv; > + struct device *dev = &pdev->dev; > + struct resource *res; > + int num_mems; > + int i; > + > + /* OMAP4 and OMAP5 DSPs do not have support for flat SRAM */ > + if (of_device_is_compatible(np, "ti,omap4-dsp") || > + of_device_is_compatible(np, "ti,omap5-dsp")) > + return 0; > + > + num_mems = ARRAY_SIZE(mem_names); > + oproc->mem = devm_kcalloc(dev, num_mems, sizeof(*oproc->mem), > + GFP_KERNEL); > + if (!oproc->mem) > + return -ENOMEM; > + > + for (i = 0; i < num_mems; i++) { > + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, > + mem_names[i]); > + oproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res); > + if (IS_ERR(oproc->mem[i].cpu_addr)) { > + dev_err(dev, "failed to parse and map %s memory\n", > + mem_names[i]); > + return PTR_ERR(oproc->mem[i].cpu_addr); > + } > + oproc->mem[i].bus_addr = res->start; > + oproc->mem[i].dev_addr = OMAP_RPROC_IPU_L2RAM_DEV_ADDR; Presumably this means that mem_names[] will only ever be {"l2ram"} ? This would imply that you can either remove the loop or you should generalize this for dev_addr as well. Apart from that, this looks good. Regards, Bjorn > + oproc->mem[i].size = resource_size(res); > + > + dev_dbg(dev, "memory %8s: bus addr %pa size 0x%x va %p da 0x%x\n", > + mem_names[i], &oproc->mem[i].bus_addr, > + oproc->mem[i].size, oproc->mem[i].cpu_addr, > + oproc->mem[i].dev_addr); > + } > + oproc->num_mems = num_mems; > + > + return 0; > +} > + > static int omap_rproc_probe(struct platform_device *pdev) > { > struct device_node *np = pdev->dev.of_node; > @@ -346,6 +411,10 @@ static int omap_rproc_probe(struct platform_device *pdev) > /* All existing OMAP IPU and DSP processors have an MMU */ > rproc->has_iommu = true; > > + ret = omap_rproc_of_get_internal_memories(pdev, rproc); > + if (ret) > + goto free_rproc; > + > ret = omap_rproc_get_boot_data(pdev, rproc); > if (ret) > goto free_rproc; > -- > 2.17.1 > > -- > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
diff --git a/drivers/remoteproc/omap_remoteproc.c b/drivers/remoteproc/omap_remoteproc.c index a10377547533..bbd6ff360e10 100644 --- a/drivers/remoteproc/omap_remoteproc.c +++ b/drivers/remoteproc/omap_remoteproc.c @@ -29,6 +29,8 @@ #include "omap_remoteproc.h" #include "remoteproc_internal.h" +#define OMAP_RPROC_IPU_L2RAM_DEV_ADDR (0x20000000) + /** * struct omap_rproc_boot_data - boot data structure for the DSP omap rprocs * @syscon: regmap handle for the system control configuration module @@ -39,11 +41,27 @@ struct omap_rproc_boot_data { unsigned int boot_reg; }; +/* + * struct omap_rproc_mem - internal memory structure + * @cpu_addr: MPU virtual address of the memory region + * @bus_addr: bus address used to access the memory region + * @dev_addr: device address of the memory region from DSP view + * @size: size of the memory region + */ +struct omap_rproc_mem { + void __iomem *cpu_addr; + phys_addr_t bus_addr; + u32 dev_addr; + size_t size; +}; + /** * struct omap_rproc - omap remote processor state * @mbox: mailbox channel handle * @client: mailbox client to request the mailbox channel * @boot_data: boot data structure for setting processor boot address + * @mem: internal memory regions data + * @num_mems: number of internal memory regions * @rproc: rproc handle * @reset: reset handle */ @@ -51,6 +69,8 @@ struct omap_rproc { struct mbox_chan *mbox; struct mbox_client client; struct omap_rproc_boot_data *boot_data; + struct omap_rproc_mem *mem; + int num_mems; struct rproc *rproc; struct reset_control *reset; }; @@ -307,6 +327,51 @@ static int omap_rproc_get_boot_data(struct platform_device *pdev, return 0; } +static int omap_rproc_of_get_internal_memories(struct platform_device *pdev, + struct rproc *rproc) +{ + static const char * const mem_names[] = {"l2ram"}; + struct device_node *np = pdev->dev.of_node; + struct omap_rproc *oproc = rproc->priv; + struct device *dev = &pdev->dev; + struct resource *res; + int num_mems; + int i; + + /* OMAP4 and OMAP5 DSPs do not have support for flat SRAM */ + if (of_device_is_compatible(np, "ti,omap4-dsp") || + of_device_is_compatible(np, "ti,omap5-dsp")) + return 0; + + num_mems = ARRAY_SIZE(mem_names); + oproc->mem = devm_kcalloc(dev, num_mems, sizeof(*oproc->mem), + GFP_KERNEL); + if (!oproc->mem) + return -ENOMEM; + + for (i = 0; i < num_mems; i++) { + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, + mem_names[i]); + oproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res); + if (IS_ERR(oproc->mem[i].cpu_addr)) { + dev_err(dev, "failed to parse and map %s memory\n", + mem_names[i]); + return PTR_ERR(oproc->mem[i].cpu_addr); + } + oproc->mem[i].bus_addr = res->start; + oproc->mem[i].dev_addr = OMAP_RPROC_IPU_L2RAM_DEV_ADDR; + oproc->mem[i].size = resource_size(res); + + dev_dbg(dev, "memory %8s: bus addr %pa size 0x%x va %p da 0x%x\n", + mem_names[i], &oproc->mem[i].bus_addr, + oproc->mem[i].size, oproc->mem[i].cpu_addr, + oproc->mem[i].dev_addr); + } + oproc->num_mems = num_mems; + + return 0; +} + static int omap_rproc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -346,6 +411,10 @@ static int omap_rproc_probe(struct platform_device *pdev) /* All existing OMAP IPU and DSP processors have an MMU */ rproc->has_iommu = true; + ret = omap_rproc_of_get_internal_memories(pdev, rproc); + if (ret) + goto free_rproc; + ret = omap_rproc_get_boot_data(pdev, rproc); if (ret) goto free_rproc;