diff options
| -rw-r--r-- | drivers/pci/host/pci-thunder-pem.c | 58 | ||||
| -rw-r--r-- | drivers/pci/host/pcie-iproc-bcma.c | 24 | ||||
| -rw-r--r-- | drivers/pci/host/pcie-iproc-platform.c | 19 | ||||
| -rw-r--r-- | drivers/pci/host/pcie-iproc.h | 1 |
4 files changed, 78 insertions, 24 deletions
diff --git a/drivers/pci/host/pci-thunder-pem.c b/drivers/pci/host/pci-thunder-pem.c index 52b5bdccf5f0..b89c373555c5 100644 --- a/drivers/pci/host/pci-thunder-pem.c +++ b/drivers/pci/host/pci-thunder-pem.c @@ -14,6 +14,7 @@ * Copyright (C) 2015 - 2016 Cavium, Inc. */ +#include <linux/bitfield.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/of_address.h> @@ -334,6 +335,50 @@ static int thunder_pem_init(struct device *dev, struct pci_config_window *cfg, #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS) +#define PEM_RES_BASE 0x87e0c0000000UL +#define PEM_NODE_MASK GENMASK(45, 44) +#define PEM_INDX_MASK GENMASK(26, 24) +#define PEM_MIN_DOM_IN_NODE 4 +#define PEM_MAX_DOM_IN_NODE 10 + +static void thunder_pem_reserve_range(struct device *dev, int seg, + struct resource *r) +{ + resource_size_t start = r->start, end = r->end; + struct resource *res; + const char *regionid; + + regionid = kasprintf(GFP_KERNEL, "PEM RC:%d", seg); + if (!regionid) + return; + + res = request_mem_region(start, end - start + 1, regionid); + if (res) + res->flags &= ~IORESOURCE_BUSY; + else + kfree(regionid); + + dev_info(dev, "%pR %s reserved\n", r, + res ? "has been" : "could not be"); +} + +static void thunder_pem_legacy_fw(struct acpi_pci_root *root, + struct resource *res_pem) +{ + int node = acpi_get_node(root->device->handle); + int index; + + if (node == NUMA_NO_NODE) + node = 0; + + index = root->segment - PEM_MIN_DOM_IN_NODE; + index -= node * PEM_MAX_DOM_IN_NODE; + res_pem->start = PEM_RES_BASE | FIELD_PREP(PEM_NODE_MASK, node) | + FIELD_PREP(PEM_INDX_MASK, index); + res_pem->end = res_pem->start + SZ_16M - 1; + res_pem->flags = IORESOURCE_MEM; +} + static int thunder_pem_acpi_init(struct pci_config_window *cfg) { struct device *dev = cfg->parent; @@ -346,10 +391,17 @@ static int thunder_pem_acpi_init(struct pci_config_window *cfg) if (!res_pem) return -ENOMEM; - ret = acpi_get_rc_resources(dev, "THRX0002", root->segment, res_pem); + ret = acpi_get_rc_resources(dev, "CAVA02B", root->segment, res_pem); + + /* + * If we fail to gather resources it means that we run with old + * FW where we need to calculate PEM-specific resources manually. + */ if (ret) { - dev_err(dev, "can't get rc base address\n"); - return ret; + thunder_pem_legacy_fw(root, res_pem); + /* Reserve PEM-specific resources and PCI configuration space */ + thunder_pem_reserve_range(dev, root->segment, res_pem); + thunder_pem_reserve_range(dev, root->segment, &cfg->res); } return thunder_pem_init(dev, cfg, res_pem); diff --git a/drivers/pci/host/pcie-iproc-bcma.c b/drivers/pci/host/pcie-iproc-bcma.c index bd4c9ec25edc..384c27e664fe 100644 --- a/drivers/pci/host/pcie-iproc-bcma.c +++ b/drivers/pci/host/pcie-iproc-bcma.c @@ -44,8 +44,7 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev) { struct device *dev = &bdev->dev; struct iproc_pcie *pcie; - LIST_HEAD(res); - struct resource res_mem; + LIST_HEAD(resources); int ret; pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); @@ -63,22 +62,23 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev) pcie->base_addr = bdev->addr; - res_mem.start = bdev->addr_s[0]; - res_mem.end = bdev->addr_s[0] + SZ_128M - 1; - res_mem.name = "PCIe MEM space"; - res_mem.flags = IORESOURCE_MEM; - pci_add_resource(&res, &res_mem); + pcie->mem.start = bdev->addr_s[0]; + pcie->mem.end = bdev->addr_s[0] + SZ_128M - 1; + pcie->mem.name = "PCIe MEM space"; + pcie->mem.flags = IORESOURCE_MEM; + pci_add_resource(&resources, &pcie->mem); pcie->map_irq = iproc_pcie_bcma_map_irq; - ret = iproc_pcie_setup(pcie, &res); - if (ret) + ret = iproc_pcie_setup(pcie, &resources); + if (ret) { dev_err(dev, "PCIe controller setup failed\n"); - - pci_free_resource_list(&res); + pci_free_resource_list(&resources); + return ret; + } bcma_set_drvdata(bdev, pcie); - return ret; + return 0; } static void iproc_pcie_bcma_remove(struct bcma_device *bdev) diff --git a/drivers/pci/host/pcie-iproc-platform.c b/drivers/pci/host/pcie-iproc-platform.c index f4909bb0b2ad..8c6a327ca6cd 100644 --- a/drivers/pci/host/pcie-iproc-platform.c +++ b/drivers/pci/host/pcie-iproc-platform.c @@ -51,7 +51,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; struct resource reg; resource_size_t iobase = 0; - LIST_HEAD(res); + LIST_HEAD(resources); int ret; pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL); @@ -96,10 +96,10 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) pcie->phy = NULL; } - ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &iobase); + ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &resources, + &iobase); if (ret) { - dev_err(dev, - "unable to get PCI host bridge resources\n"); + dev_err(dev, "unable to get PCI host bridge resources\n"); return ret; } @@ -112,14 +112,15 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) pcie->map_irq = of_irq_parse_and_map_pci; } - ret = iproc_pcie_setup(pcie, &res); - if (ret) + ret = iproc_pcie_setup(pcie, &resources); + if (ret) { dev_err(dev, "PCIe controller setup failed\n"); - - pci_free_resource_list(&res); + pci_free_resource_list(&resources); + return ret; + } platform_set_drvdata(pdev, pcie); - return ret; + return 0; } static int iproc_pcie_pltfm_remove(struct platform_device *pdev) diff --git a/drivers/pci/host/pcie-iproc.h b/drivers/pci/host/pcie-iproc.h index 04fed8e907f1..0bbe2ea44f3e 100644 --- a/drivers/pci/host/pcie-iproc.h +++ b/drivers/pci/host/pcie-iproc.h @@ -90,6 +90,7 @@ struct iproc_pcie { #ifdef CONFIG_ARM struct pci_sys_data sysdata; #endif + struct resource mem; struct pci_bus *root_bus; struct phy *phy; int (*map_irq)(const struct pci_dev *, u8, u8); |