diff options
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-bus.c | 73 | ||||
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-msi.c | 37 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c | 92 |
3 files changed, 150 insertions, 52 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c b/drivers/bus/fsl-mc/fsl-mc-bus.c index 824ff77bbe86..324d49d6df89 100644 --- a/drivers/bus/fsl-mc/fsl-mc-bus.c +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c @@ -18,6 +18,8 @@ #include <linux/bitops.h> #include <linux/msi.h> #include <linux/dma-mapping.h> +#include <linux/acpi.h> +#include <linux/iommu.h> #include "fsl-mc-private.h" @@ -38,6 +40,7 @@ struct fsl_mc { struct fsl_mc_device *root_mc_bus_dev; u8 num_translation_ranges; struct fsl_mc_addr_translation_range *translation_ranges; + void *fsl_mc_regs; }; /** @@ -56,6 +59,10 @@ struct fsl_mc_addr_translation_range { phys_addr_t start_phys_addr; }; +#define FSL_MC_FAPR 0x28 +#define MC_FAPR_PL BIT(18) +#define MC_FAPR_BMT BIT(17) + /** * fsl_mc_bus_match - device to driver matching callback * @dev: the fsl-mc device to match against @@ -124,7 +131,10 @@ static int fsl_mc_dma_configure(struct device *dev) while (dev_is_fsl_mc(dma_dev)) dma_dev = dma_dev->parent; - return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); + if (dev_of_node(dma_dev)) + return of_dma_configure_id(dev, dma_dev->of_node, 0, &input_id); + + return acpi_dma_configure_id(dev, DEV_DMA_COHERENT, &input_id); } static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, @@ -865,8 +875,11 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) struct fsl_mc_io *mc_io = NULL; int container_id; phys_addr_t mc_portal_phys_addr; - u32 mc_portal_size; - struct resource res; + u32 mc_portal_size, mc_stream_id; + struct resource *plat_res; + + if (!iommu_present(&fsl_mc_bus_type)) + return -EPROBE_DEFER; mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL); if (!mc) @@ -874,19 +887,33 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) platform_set_drvdata(pdev, mc); + plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + mc->fsl_mc_regs = devm_ioremap_resource(&pdev->dev, plat_res); + if (IS_ERR(mc->fsl_mc_regs)) + return PTR_ERR(mc->fsl_mc_regs); + + if (IS_ENABLED(CONFIG_ACPI) && !dev_of_node(&pdev->dev)) { + mc_stream_id = readl(mc->fsl_mc_regs + FSL_MC_FAPR); + /* + * HW ORs the PL and BMT bit, places the result in bit 15 of + * the StreamID and ORs in the ICID. Calculate it accordingly. + */ + mc_stream_id = (mc_stream_id & 0xffff) | + ((mc_stream_id & (MC_FAPR_PL | MC_FAPR_BMT)) ? + 0x4000 : 0); + error = acpi_dma_configure_id(&pdev->dev, DEV_DMA_COHERENT, + &mc_stream_id); + if (error) + dev_warn(&pdev->dev, "failed to configure dma: %d.\n", + error); + } + /* * Get physical address of MC portal for the root DPRC: */ - error = of_address_to_resource(pdev->dev.of_node, 0, &res); - if (error < 0) { - dev_err(&pdev->dev, - "of_address_to_resource() failed for %pOF\n", - pdev->dev.of_node); - return error; - } - - mc_portal_phys_addr = res.start; - mc_portal_size = resource_size(&res); + plat_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + mc_portal_phys_addr = plat_res->start; + mc_portal_size = resource_size(plat_res); error = fsl_create_mc_io(&pdev->dev, mc_portal_phys_addr, mc_portal_size, NULL, FSL_MC_IO_ATOMIC_CONTEXT_PORTAL, &mc_io); @@ -903,11 +930,13 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) dev_info(&pdev->dev, "MC firmware version: %u.%u.%u\n", mc_version.major, mc_version.minor, mc_version.revision); - error = get_mc_addr_translation_ranges(&pdev->dev, - &mc->translation_ranges, - &mc->num_translation_ranges); - if (error < 0) - goto error_cleanup_mc_io; + if (dev_of_node(&pdev->dev)) { + error = get_mc_addr_translation_ranges(&pdev->dev, + &mc->translation_ranges, + &mc->num_translation_ranges); + if (error < 0) + goto error_cleanup_mc_io; + } error = dprc_get_container_id(mc_io, 0, &container_id); if (error < 0) { @@ -934,6 +963,7 @@ static int fsl_mc_bus_probe(struct platform_device *pdev) goto error_cleanup_mc_io; mc->root_mc_bus_dev = mc_bus_dev; + mc_bus_dev->dev.fwnode = pdev->dev.fwnode; return 0; error_cleanup_mc_io: @@ -967,11 +997,18 @@ static const struct of_device_id fsl_mc_bus_match_table[] = { MODULE_DEVICE_TABLE(of, fsl_mc_bus_match_table); +static const struct acpi_device_id fsl_mc_bus_acpi_match_table[] = { + {"NXP0008", 0 }, + { } +}; +MODULE_DEVICE_TABLE(acpi, fsl_mc_bus_acpi_match_table); + static struct platform_driver fsl_mc_bus_driver = { .driver = { .name = "fsl_mc_bus", .pm = NULL, .of_match_table = fsl_mc_bus_match_table, + .acpi_match_table = fsl_mc_bus_acpi_match_table, }, .probe = fsl_mc_bus_probe, .remove = fsl_mc_bus_remove, diff --git a/drivers/bus/fsl-mc/fsl-mc-msi.c b/drivers/bus/fsl-mc/fsl-mc-msi.c index e7bbff445a83..8edadf05cbb7 100644 --- a/drivers/bus/fsl-mc/fsl-mc-msi.c +++ b/drivers/bus/fsl-mc/fsl-mc-msi.c @@ -13,6 +13,7 @@ #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/msi.h> +#include <linux/acpi_iort.h> #include "fsl-mc-private.h" @@ -179,25 +180,31 @@ struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode, struct irq_domain *fsl_mc_find_msi_domain(struct device *dev) { - struct irq_domain *msi_domain = NULL; + struct device *root_dprc_dev; + struct device *bus_dev; + struct irq_domain *msi_domain; struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); - msi_domain = of_msi_map_get_device_domain(dev, mc_dev->icid, + fsl_mc_get_root_dprc(dev, &root_dprc_dev); + bus_dev = root_dprc_dev->parent; + + if (bus_dev->of_node) { + msi_domain = of_msi_map_get_device_domain(dev, + mc_dev->icid, DOMAIN_BUS_FSL_MC_MSI); - /* - * if the msi-map property is missing assume that all the - * child containers inherit the domain from the parent - */ - if (!msi_domain) { - struct device *root_dprc_dev; - struct device *bus_dev; - - fsl_mc_get_root_dprc(dev, &root_dprc_dev); - bus_dev = root_dprc_dev->parent; - msi_domain = of_msi_get_domain(bus_dev, - bus_dev->of_node, - DOMAIN_BUS_FSL_MC_MSI); + /* + * if the msi-map property is missing assume that all the + * child containers inherit the domain from the parent + */ + if (!msi_domain) + + msi_domain = of_msi_get_domain(bus_dev, + bus_dev->of_node, + DOMAIN_BUS_FSL_MC_MSI); + } else { + msi_domain = iort_get_device_domain(dev, mc_dev->icid, + DOMAIN_BUS_FSL_MC_MSI); } return msi_domain; diff --git a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c index a5c8d577e424..634263dfd7b5 100644 --- a/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c +++ b/drivers/irqchip/irq-gic-v3-its-fsl-mc-msi.c @@ -7,6 +7,8 @@ * */ +#include <linux/acpi.h> +#include <linux/acpi_iort.h> #include <linux/of_device.h> #include <linux/of_address.h> #include <linux/irq.h> @@ -30,7 +32,8 @@ static u32 fsl_mc_msi_domain_get_msi_id(struct irq_domain *domain, u32 out_id; of_node = irq_domain_get_of_node(domain); - out_id = of_msi_map_id(&mc_dev->dev, of_node, mc_dev->icid); + out_id = of_node ? of_msi_map_id(&mc_dev->dev, of_node, mc_dev->icid) : + iort_msi_map_id(&mc_dev->dev, mc_dev->icid); return out_id; } @@ -79,12 +82,71 @@ static const struct of_device_id its_device_id[] = { {}, }; -static int __init its_fsl_mc_msi_init(void) +static void __init its_fsl_mc_msi_init_one(struct fwnode_handle *handle, + const char *name) { - struct device_node *np; struct irq_domain *parent; struct irq_domain *mc_msi_domain; + parent = irq_find_matching_fwnode(handle, DOMAIN_BUS_NEXUS); + if (!parent || !msi_get_domain_info(parent)) { + pr_err("%s: unable to locate ITS domain\n", name); + return; + } + + mc_msi_domain = fsl_mc_msi_create_irq_domain(handle, + &its_fsl_mc_msi_domain_info, + parent); + if (!mc_msi_domain) { + pr_err("%s: unable to create fsl-mc domain\n", name); + return; + } + + pr_info("fsl-mc MSI: %s domain created\n", name); +} + +#ifdef CONFIG_ACPI +static int __init +its_fsl_mc_msi_parse_madt(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_madt_generic_translator *its_entry; + struct fwnode_handle *dom_handle; + const char *node_name; + int err = 0; + + its_entry = (struct acpi_madt_generic_translator *)header; + node_name = kasprintf(GFP_KERNEL, "ITS@0x%lx", + (long)its_entry->base_address); + + dom_handle = iort_find_domain_token(its_entry->translation_id); + if (!dom_handle) { + pr_err("%s: Unable to locate ITS domain handle\n", node_name); + err = -ENXIO; + goto out; + } + + its_fsl_mc_msi_init_one(dom_handle, node_name); + +out: + kfree(node_name); + return err; +} + + +static void __init its_fsl_mc_acpi_msi_init(void) +{ + acpi_table_parse_madt(ACPI_MADT_TYPE_GENERIC_TRANSLATOR, + its_fsl_mc_msi_parse_madt, 0); +} +#else +static inline void its_fsl_mc_acpi_msi_init(void) { } +#endif + +static void __init its_fsl_mc_of_msi_init(void) +{ + struct device_node *np; + for (np = of_find_matching_node(NULL, its_device_id); np; np = of_find_matching_node(np, its_device_id)) { if (!of_device_is_available(np)) @@ -92,23 +154,15 @@ static int __init its_fsl_mc_msi_init(void) if (!of_property_read_bool(np, "msi-controller")) continue; - parent = irq_find_matching_host(np, DOMAIN_BUS_NEXUS); - if (!parent || !msi_get_domain_info(parent)) { - pr_err("%pOF: unable to locate ITS domain\n", np); - continue; - } - - mc_msi_domain = fsl_mc_msi_create_irq_domain( - of_node_to_fwnode(np), - &its_fsl_mc_msi_domain_info, - parent); - if (!mc_msi_domain) { - pr_err("%pOF: unable to create fsl-mc domain\n", np); - continue; - } - - pr_info("fsl-mc MSI: %pOF domain created\n", np); + its_fsl_mc_msi_init_one(of_node_to_fwnode(np), + np->full_name); } +} + +static int __init its_fsl_mc_msi_init(void) +{ + its_fsl_mc_of_msi_init(); + its_fsl_mc_acpi_msi_init(); return 0; } |