diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/hotplug/rpadlpar_core.c | 3 | ||||
| -rw-r--r-- | drivers/pci/hotplug/rpaphp_core.c | 3 | ||||
| -rw-r--r-- | drivers/pci/intel-iommu.c | 22 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 6 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv.c | 10 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 23 | ||||
| -rw-r--r-- | drivers/pci/setup-bus.c | 114 |
7 files changed, 36 insertions, 145 deletions
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index 4e3e0382c16..083034710fa 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <linux/string.h> +#include <linux/vmalloc.h> #include <asm/pci-bridge.h> #include <linux/mutex.h> @@ -430,6 +431,8 @@ int dlpar_remove_slot(char *drc_name) rc = dlpar_remove_pci_slot(drc_name, dn); break; } + vm_unmap_aliases(); + printk(KERN_INFO "%s: slot %s removed\n", DLPAR_MODULE_NAME, drc_name); exit: mutex_unlock(&rpadlpar_mutex); diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 71970224078..ef7411c660b 100644 --- a/drivers/pci/hotplug/rpaphp_core.c +++ b/drivers/pci/hotplug/rpaphp_core.c @@ -29,6 +29,7 @@ #include <linux/pci_hotplug.h> #include <linux/smp.h> #include <linux/init.h> +#include <linux/vmalloc.h> #include <asm/eeh.h> /* for eeh_add_device() */ #include <asm/rtas.h> /* rtas_call */ #include <asm/pci-bridge.h> /* for pci_controller */ @@ -418,6 +419,8 @@ static int disable_slot(struct hotplug_slot *hotplug_slot) return -EINVAL; pcibios_remove_pci_devices(slot->bus); + vm_unmap_aliases(); + slot->state = NOT_CONFIGURED; return 0; } diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 417312528dd..371dc564e2e 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3626,14 +3626,15 @@ static void intel_iommu_detach_device(struct iommu_domain *domain, domain_remove_one_dev_info(dmar_domain, pdev); } -static int intel_iommu_map_range(struct iommu_domain *domain, - unsigned long iova, phys_addr_t hpa, - size_t size, int iommu_prot) +static int intel_iommu_map(struct iommu_domain *domain, + unsigned long iova, phys_addr_t hpa, + int gfp_order, int iommu_prot) { struct dmar_domain *dmar_domain = domain->priv; u64 max_addr; int addr_width; int prot = 0; + size_t size; int ret; if (iommu_prot & IOMMU_READ) @@ -3643,6 +3644,7 @@ static int intel_iommu_map_range(struct iommu_domain *domain, if ((iommu_prot & IOMMU_CACHE) && dmar_domain->iommu_snooping) prot |= DMA_PTE_SNP; + size = PAGE_SIZE << gfp_order; max_addr = iova + size; if (dmar_domain->max_addr < max_addr) { int min_agaw; @@ -3669,19 +3671,19 @@ static int intel_iommu_map_range(struct iommu_domain *domain, return ret; } -static void intel_iommu_unmap_range(struct iommu_domain *domain, - unsigned long iova, size_t size) +static int intel_iommu_unmap(struct iommu_domain *domain, + unsigned long iova, int gfp_order) { struct dmar_domain *dmar_domain = domain->priv; - - if (!size) - return; + size_t size = PAGE_SIZE << gfp_order; dma_pte_clear_range(dmar_domain, iova >> VTD_PAGE_SHIFT, (iova + size - 1) >> VTD_PAGE_SHIFT); if (dmar_domain->max_addr == iova + size) dmar_domain->max_addr = iova; + + return gfp_order; } static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain, @@ -3714,8 +3716,8 @@ static struct iommu_ops intel_iommu_ops = { .domain_destroy = intel_iommu_domain_destroy, .attach_dev = intel_iommu_attach_device, .detach_dev = intel_iommu_detach_device, - .map = intel_iommu_map_range, - .unmap = intel_iommu_unmap_range, + .map = intel_iommu_map, + .unmap = intel_iommu_unmap, .iova_to_phys = intel_iommu_iova_to_phys, .domain_has_cap = intel_iommu_domain_has_cap, }; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 9a3d3309f89..1df7c508814 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -679,7 +679,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state) */ int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state) { - return state > PCI_D0 ? + return state >= PCI_D0 ? pci_platform_power_transition(dev, state) : -EINVAL; } EXPORT_SYMBOL_GPL(__pci_complete_power_transition); @@ -716,10 +716,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) */ return 0; - /* Check if we're already there */ - if (dev->current_state == state) - return 0; - __pci_start_power_transition(dev, state); /* This device is quirked not to be put into D3, so diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c index aa495ad9bbd..7a711ee314b 100644 --- a/drivers/pci/pcie/aer/aerdrv.c +++ b/drivers/pci/pcie/aer/aerdrv.c @@ -244,11 +244,17 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) /* Assert Secondary Bus Reset */ pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &p2p_ctrl); - p2p_ctrl |= PCI_CB_BRIDGE_CTL_CB_RESET; + p2p_ctrl |= PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl); + /* + * we should send hot reset message for 2ms to allow it time to + * propogate to all downstream ports + */ + msleep(2); + /* De-assert Secondary Bus Reset */ - p2p_ctrl &= ~PCI_CB_BRIDGE_CTL_CB_RESET; + p2p_ctrl &= ~PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_word(dev, PCI_BRIDGE_CONTROL, p2p_ctrl); /* diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 882bd8d29fe..c82548afcd5 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -174,19 +174,14 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, pci_read_config_dword(dev, pos, &sz); pci_write_config_dword(dev, pos, l); - if (!sz) - goto fail; /* BAR not implemented */ - /* * All bits set in sz means the device isn't working properly. - * If it's a memory BAR or a ROM, bit 0 must be clear; if it's - * an io BAR, bit 1 must be clear. + * If the BAR isn't implemented, all bits must be 0. If it's a + * memory BAR or a ROM, bit 0 must be clear; if it's an io BAR, bit + * 1 must be clear. */ - if (sz == 0xffffffff) { - dev_err(&dev->dev, "reg %x: invalid size %#x; broken device?\n", - pos, sz); + if (!sz || sz == 0xffffffff) goto fail; - } /* * I don't know how l can have all bits set. Copied from old code. @@ -249,17 +244,13 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, pos, res); } } else { - u32 size = pci_size(l, sz, mask); + sz = pci_size(l, sz, mask); - if (!size) { - dev_err(&dev->dev, "reg %x: invalid size " - "(l %#x sz %#x mask %#x); broken device?", - pos, l, sz, mask); + if (!sz) goto fail; - } res->start = l; - res->end = l + size; + res->end = l + sz; dev_printk(KERN_DEBUG, &dev->dev, "reg %x: %pR\n", pos, res); } diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 4fe36d2e104..19b111383f6 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -838,65 +838,11 @@ static void pci_bus_dump_resources(struct pci_bus *bus) } } -static int __init pci_bus_get_depth(struct pci_bus *bus) -{ - int depth = 0; - struct pci_dev *dev; - - list_for_each_entry(dev, &bus->devices, bus_list) { - int ret; - struct pci_bus *b = dev->subordinate; - if (!b) - continue; - - ret = pci_bus_get_depth(b); - if (ret + 1 > depth) - depth = ret + 1; - } - - return depth; -} -static int __init pci_get_max_depth(void) -{ - int depth = 0; - struct pci_bus *bus; - - list_for_each_entry(bus, &pci_root_buses, node) { - int ret; - - ret = pci_bus_get_depth(bus); - if (ret > depth) - depth = ret; - } - - return depth; -} - -/* - * first try will not touch pci bridge res - * second and later try will clear small leaf bridge res - * will stop till to the max deepth if can not find good one - */ void __init pci_assign_unassigned_resources(void) { struct pci_bus *bus; - int tried_times = 0; - enum release_type rel_type = leaf_only; - struct resource_list_x head, *list; - unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM | - IORESOURCE_PREFETCH; - unsigned long failed_type; - int max_depth = pci_get_max_depth(); - int pci_try_num; - head.next = NULL; - - pci_try_num = max_depth + 1; - printk(KERN_DEBUG "PCI: max bus depth: %d pci_try_num: %d\n", - max_depth, pci_try_num); - -again: /* Depth first, calculate sizes and alignments of all subordinate buses. */ list_for_each_entry(bus, &pci_root_buses, node) { @@ -904,65 +850,9 @@ again: } /* Depth last, allocate resources and update the hardware. */ list_for_each_entry(bus, &pci_root_buses, node) { - __pci_bus_assign_resources(bus, &head); - } - tried_times++; - - /* any device complain? */ - if (!head.next) - goto enable_and_dump; - failed_type = 0; - for (list = head.next; list;) { - failed_type |= list->flags; - list = list->next; - } - /* - * io port are tight, don't try extra - * or if reach the limit, don't want to try more - */ - failed_type &= type_mask; - if ((failed_type == IORESOURCE_IO) || (tried_times >= pci_try_num)) { - free_failed_list(&head); - goto enable_and_dump; - } - - printk(KERN_DEBUG "PCI: No. %d try to assign unassigned res\n", - tried_times + 1); - - /* third times and later will not check if it is leaf */ - if ((tried_times + 1) > 2) - rel_type = whole_subtree; - - /* - * Try to release leaf bridge's resources that doesn't fit resource of - * child device under that bridge - */ - for (list = head.next; list;) { - bus = list->dev->bus; - pci_bus_release_bridge_resources(bus, list->flags & type_mask, - rel_type); - list = list->next; - } - /* restore size and flags */ - for (list = head.next; list;) { - struct resource *res = list->res; - - res->start = list->start; - res->end = list->end; - res->flags = list->flags; - if (list->dev->subordinate) - res->flags = 0; - - list = list->next; - } - free_failed_list(&head); - - goto again; - -enable_and_dump: - /* Depth last, update the hardware. */ - list_for_each_entry(bus, &pci_root_buses, node) + pci_bus_assign_resources(bus); pci_enable_bridges(bus); + } /* dump the resource on buses */ list_for_each_entry(bus, &pci_root_buses, node) { |