diff options
Diffstat (limited to 'drivers/pci/setup-bus.c')
| -rw-r--r-- | drivers/pci/setup-bus.c | 57 |
1 files changed, 45 insertions, 12 deletions
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 9995842..49e0323 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -34,6 +34,7 @@ struct resource_list_x { resource_size_t start; resource_size_t end; resource_size_t add_size; + resource_size_t min_align; unsigned long flags; }; @@ -65,7 +66,7 @@ void pci_realloc(void) */ static void add_to_list(struct resource_list_x *head, struct pci_dev *dev, struct resource *res, - resource_size_t add_size) + resource_size_t add_size, resource_size_t min_align) { struct resource_list_x *list = head; struct resource_list_x *ln = list->next; @@ -84,13 +85,16 @@ static void add_to_list(struct resource_list_x *head, tmp->end = res->end; tmp->flags = res->flags; tmp->add_size = add_size; + tmp->min_align = min_align; list->next = tmp; } static void add_to_failed_list(struct resource_list_x *head, struct pci_dev *dev, struct resource *res) { - add_to_list(head, dev, res, 0); + add_to_list(head, dev, res, + 0 /* dont care */, + 0 /* dont care */); } static void __dev_sort_resources(struct pci_dev *dev, @@ -159,13 +163,16 @@ static void adjust_resources_sorted(struct resource_list_x *add_head, idx = res - &list->dev->resource[0]; add_size=list->add_size; - if (!resource_size(res) && add_size) { - res->end = res->start + add_size - 1; - if(pci_assign_resource(list->dev, idx)) + if (!resource_size(res)) { + res->end = res->start + add_size - 1; + if(pci_assign_resource(list->dev, idx)) reset_resource(res); - } else if (add_size) { - adjust_resource(res, res->start, - resource_size(res) + add_size); + } else { + resource_size_t align = list->min_align; + res->flags |= list->flags & (IORESOURCE_STARTALIGN|IORESOURCE_SIZEALIGN); + if (pci_reassign_resource(list->dev, idx, add_size, align)) + dev_printk(KERN_DEBUG, &list->dev->dev, "failed to add optional resources res=%pR\n", + res); } out: tmp = list; @@ -543,6 +550,20 @@ static resource_size_t calculate_memsize(resource_size_t size, return size; } +static resource_size_t get_res_add_size(struct resource_list_x *add_head, + struct resource *res) +{ + struct resource_list_x *list; + + /* check if it is in add_head list */ + for (list = add_head->next; list && list->res != res; + list = list->next); + if (list) + return list->add_size; + + return 0; +} + /** * pbus_size_io() - size the io window of a given bus * @@ -562,6 +583,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, struct pci_dev *dev; struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO); unsigned long size = 0, size0 = 0, size1 = 0; + resource_size_t children_add_size = 0; if (!b_res) return; @@ -582,12 +604,17 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, size += r_size; else size1 += r_size; + + if (add_head) + children_add_size += get_res_add_size(add_head, r); } } size0 = calculate_iosize(size, min_size, size1, resource_size(b_res), 4096); + if (children_add_size > add_size) + add_size = children_add_size; size1 = (!add_head || (add_head && !add_size)) ? size0 : - calculate_iosize(size, min_size+add_size, size1, + calculate_iosize(size, min_size, add_size + size1, resource_size(b_res), 4096); if (!size0 && !size1) { if (b_res->start || b_res->end) @@ -602,7 +629,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, b_res->end = b_res->start + size0 - 1; b_res->flags |= IORESOURCE_STARTALIGN; if (size1 > size0 && add_head) - add_to_list(add_head, bus->self, b_res, size1-size0); + add_to_list(add_head, bus->self, b_res, size1-size0, 4096); } /** @@ -627,6 +654,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, int order, max_order; struct resource *b_res = find_free_bus_resource(bus, type); unsigned int mem64_mask = 0; + resource_size_t children_add_size = 0; if (!b_res) return 0; @@ -668,6 +696,9 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, if (order > max_order) max_order = order; mem64_mask &= r->flags & IORESOURCE_MEM_64; + + if (add_head) + children_add_size += get_res_add_size(add_head, r); } } align = 0; @@ -684,8 +715,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, align += aligns[order]; } size0 = calculate_memsize(size, min_size, 0, resource_size(b_res), min_align); + if (children_add_size > add_size) + add_size = children_add_size; size1 = (!add_head || (add_head && !add_size)) ? size0 : - calculate_memsize(size, min_size+add_size, 0, + calculate_memsize(size, min_size, add_size, resource_size(b_res), min_align); if (!size0 && !size1) { if (b_res->start || b_res->end) @@ -699,7 +732,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, b_res->end = size0 + min_align - 1; b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask; if (size1 > size0 && add_head) - add_to_list(add_head, bus->self, b_res, size1-size0); + add_to_list(add_head, bus->self, b_res, size1-size0, min_align); return 1; } |