diff options
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 59 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci.h | 2 |
2 files changed, 8 insertions, 53 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 15d9dfcaf840..70641617ff20 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -271,35 +271,18 @@ static void pnv_ioda2_reserve_m64_pe(struct pci_bus *bus, } } -static int pnv_ioda2_pick_m64_pe(struct pnv_phb *phb, - struct pci_bus *bus, bool all) +static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) { - resource_size_t segsz = phb->ioda.m64_segsize; - struct pci_dev *pdev; - struct resource *r; + struct pci_controller *hose = pci_bus_to_host(bus); + struct pnv_phb *phb = hose->private_data; struct pnv_ioda_pe *master_pe, *pe; unsigned long size, *pe_alloc; - bool found; - int start, i, j; + int i; /* Root bus shouldn't use M64 */ if (pci_is_root_bus(bus)) return IODA_INVALID_PE; - /* We support only one M64 window on each bus */ - found = false; - pci_bus_for_each_resource(bus, r, i) { - if (r && r->parent && - pnv_pci_is_mem_pref_64(r->flags)) { - found = true; - break; - } - } - - /* No M64 window found ? */ - if (!found) - return IODA_INVALID_PE; - /* Allocate bitmap */ size = _ALIGN_UP(phb->ioda.total_pe / 8, sizeof(unsigned long)); pe_alloc = kzalloc(size, GFP_KERNEL); @@ -309,35 +292,8 @@ static int pnv_ioda2_pick_m64_pe(struct pnv_phb *phb, return IODA_INVALID_PE; } - /* - * Figure out reserved PE numbers by the PE - * the its child PEs. - */ - start = (r->start - phb->ioda.m64_base) / segsz; - for (i = 0; i < resource_size(r) / segsz; i++) - set_bit(start + i, pe_alloc); - - if (all) - goto done; - - /* - * If the PE doesn't cover all subordinate buses, - * we need subtract from reserved PEs for children. - */ - list_for_each_entry(pdev, &bus->devices, bus_list) { - if (!pdev->subordinate) - continue; - - pci_bus_for_each_resource(pdev->subordinate, r, i) { - if (!r || !r->parent || - !pnv_pci_is_mem_pref_64(r->flags)) - continue; - - start = (r->start - phb->ioda.m64_base) / segsz; - for (j = 0; j < resource_size(r) / segsz ; j++) - clear_bit(start + j, pe_alloc); - } - } + /* Figure out reserved PE numbers by the PE */ + pnv_ioda2_reserve_m64_pe(bus, pe_alloc, all); /* * the current bus might not own M64 window and that's all @@ -353,7 +309,6 @@ static int pnv_ioda2_pick_m64_pe(struct pnv_phb *phb, * Figure out the master PE and put all slave PEs to master * PE's list to form compound PE. */ -done: master_pe = NULL; i = -1; while ((i = find_next_bit(pe_alloc, phb->ioda.total_pe, i + 1)) < @@ -1073,7 +1028,7 @@ static void pnv_ioda_setup_bus_PE(struct pci_bus *bus, bool all) /* Check if PE is determined by M64 */ if (phb->pick_m64_pe) - pe_num = phb->pick_m64_pe(phb, bus, all); + pe_num = phb->pick_m64_pe(bus, all); /* The PE number isn't pinned by M64 */ if (pe_num == IODA_INVALID_PE) diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 5915cd244a5e..e891ff48d7e6 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -112,7 +112,7 @@ struct pnv_phb { int (*init_m64)(struct pnv_phb *phb); void (*reserve_m64_pe)(struct pci_bus *bus, unsigned long *pe_bitmap, bool all); - int (*pick_m64_pe)(struct pnv_phb *phb, struct pci_bus *bus, bool all); + int (*pick_m64_pe)(struct pci_bus *bus, bool all); int (*get_pe_state)(struct pnv_phb *phb, int pe_no); void (*freeze_pe)(struct pnv_phb *phb, int pe_no); int (*unfreeze_pe)(struct pnv_phb *phb, int pe_no, int opt); |