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Signed-off-by: Thippeswamy Havalige --- arch/microblaze/include/asm/pci-bridge.h | 13 --- arch/microblaze/pci/pci-common.c | 163 ------------------------------- arch/microblaze/pci/xilinx_pci.c | 5 - 3 files changed, 181 deletions(-) diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h index ce74b0c..252bcc1 100644 --- a/arch/microblaze/include/asm/pci-bridge.h +++ b/arch/microblaze/include/asm/pci-bridge.h @@ -38,20 +38,11 @@ struct pci_controller { void __iomem *io_base_virt; resource_size_t io_base_phys; - resource_size_t pci_io_size; - /* Some machines (PReP) have a non 1:1 mapping of * the PCI memory space in the CPU bus space */ resource_size_t pci_mem_offset; - /* Some machines have a special region to forward the ISA - * "memory" cycles such as VGA memory regions. Left to 0 - * if unsupported - */ - resource_size_t isa_mem_phys; - resource_size_t isa_mem_size; - struct pci_ops *ops; unsigned int __iomem *cfg_addr; void __iomem *cfg_data; @@ -107,10 +98,6 @@ extern void setup_indirect_pci(struct pci_controller *hose, resource_size_t cfg_addr, resource_size_t cfg_data, u32 flags); -/* Fill up host controller resources from the OF node */ -extern void pci_process_bridge_OF_ranges(struct pci_controller *hose, - struct device_node *dev, int primary); - /* Allocate & free a PCI host bridge structure */ extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev); extern void pcibios_free_controller(struct pci_controller *phb); diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index ef4a9fc..12764df0 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -171,169 +171,6 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar, *end = rsrc->end; } -/** - * pci_process_bridge_OF_ranges - Parse PCI bridge resources from device tree - * @hose: newly allocated pci_controller to be setup - * @dev: device node of the host bridge - * @primary: set if primary bus (32 bits only, soon to be deprecated) - * - * This function will parse the "ranges" property of a PCI host bridge device - * node and setup the resource mapping of a pci controller based on its - * content. - * - * Life would be boring if it wasn't for a few issues that we have to deal - * with here: - * - * - We can only cope with one IO space range and up to 3 Memory space - * ranges. However, some machines (thanks Apple !) tend to split their - * space into lots of small contiguous ranges. So we have to coalesce. - * - * - We can only cope with all memory ranges having the same offset - * between CPU addresses and PCI addresses. Unfortunately, some bridges - * are setup for a large 1:1 mapping along with a small "window" which - * maps PCI address 0 to some arbitrary high address of the CPU space in - * order to give access to the ISA memory hole. - * The way out of here that I've chosen for now is to always set the - * offset based on the first resource found, then override it if we - * have a different offset and the previous was set by an ISA hole. - * - * - Some busses have IO space not starting at 0, which causes trouble with - * the way we do our IO resource renumbering. The code somewhat deals with - * it for 64 bits but I would expect problems on 32 bits. - * - * - Some 32 bits platforms such as 4xx can have physical space larger than - * 32 bits so we need to use 64 bits values for the parsing - */ -void pci_process_bridge_OF_ranges(struct pci_controller *hose, - struct device_node *dev, int primary) -{ - int memno = 0, isa_hole = -1; - unsigned long long isa_mb = 0; - struct resource *res; - struct of_pci_range range; - struct of_pci_range_parser parser; - - pr_info("PCI host bridge %pOF %s ranges:\n", - dev, primary ? "(primary)" : ""); - - /* Check for ranges property */ - if (of_pci_range_parser_init(&parser, dev)) - return; - - pr_debug("Parsing ranges property...\n"); - for_each_of_pci_range(&parser, &range) { - /* Read next ranges element */ - - /* If we failed translation or got a zero-sized region - * (some FW try to feed us with non sensical zero sized regions - * such as power3 which look like some kind of attempt - * at exposing the VGA memory hole) - */ - if (range.cpu_addr == OF_BAD_ADDR || range.size == 0) - continue; - - /* Act based on address space type */ - res = NULL; - switch (range.flags & IORESOURCE_TYPE_BITS) { - case IORESOURCE_IO: - pr_info(" IO 0x%016llx..0x%016llx -> 0x%016llx\n", - range.cpu_addr, range.cpu_addr + range.size - 1, - range.pci_addr); - - /* We support only one IO range */ - if (hose->pci_io_size) { - pr_info(" \\--> Skipped (too many) !\n"); - continue; - } - /* On 32 bits, limit I/O space to 16MB */ - if (range.size > 0x01000000) - range.size = 0x01000000; - - /* 32 bits needs to map IOs here */ - hose->io_base_virt = ioremap(range.cpu_addr, - range.size); - - /* Expect trouble if pci_addr is not 0 */ - if (primary) - isa_io_base = - (unsigned long)hose->io_base_virt; - /* pci_io_size and io_base_phys always represent IO - * space starting at 0 so we factor in pci_addr - */ - hose->pci_io_size = range.pci_addr + range.size; - hose->io_base_phys = range.cpu_addr - range.pci_addr; - - /* Build resource */ - res = &hose->io_resource; - range.cpu_addr = range.pci_addr; - - break; - case IORESOURCE_MEM: - pr_info(" MEM 0x%016llx..0x%016llx -> 0x%016llx %s\n", - range.cpu_addr, range.cpu_addr + range.size - 1, - range.pci_addr, - (range.flags & IORESOURCE_PREFETCH) ? - "Prefetch" : ""); - - /* We support only 3 memory ranges */ - if (memno >= 3) { - pr_info(" \\--> Skipped (too many) !\n"); - continue; - } - /* Handles ISA memory hole space here */ - if (range.pci_addr == 0) { - isa_mb = range.cpu_addr; - isa_hole = memno; - if (primary || isa_mem_base == 0) - isa_mem_base = range.cpu_addr; - hose->isa_mem_phys = range.cpu_addr; - hose->isa_mem_size = range.size; - } - - /* We get the PCI/Mem offset from the first range or - * the, current one if the offset came from an ISA - * hole. If they don't match, bugger. - */ - if (memno == 0 || - (isa_hole >= 0 && range.pci_addr != 0 && - hose->pci_mem_offset == isa_mb)) - hose->pci_mem_offset = range.cpu_addr - - range.pci_addr; - else if (range.pci_addr != 0 && - hose->pci_mem_offset != range.cpu_addr - - range.pci_addr) { - pr_info(" \\--> Skipped (offset mismatch) !\n"); - continue; - } - - /* Build resource */ - res = &hose->mem_resources[memno++]; - break; - } - if (res != NULL) { - res->name = dev->full_name; - res->flags = range.flags; - res->start = range.cpu_addr; - res->end = range.cpu_addr + range.size - 1; - res->parent = res->child = res->sibling = NULL; - } - } - - /* If there's an ISA hole and the pci_mem_offset is -not- matching - * the ISA hole offset, then we need to remove the ISA hole from - * the resource list for that brige - */ - if (isa_hole >= 0 && hose->pci_mem_offset != isa_mb) { - unsigned int next = isa_hole + 1; - pr_info(" Removing ISA hole at 0x%016llx\n", isa_mb); - if (next < memno) - memmove(&hose->mem_resources[isa_hole], - &hose->mem_resources[next], - sizeof(struct resource) * (memno - next)); - hose->mem_resources[--memno].flags = 0; - } -} - /* Display the domain number in /proc */ int pci_proc_domain(struct pci_bus *bus) { diff --git a/arch/microblaze/pci/xilinx_pci.c b/arch/microblaze/pci/xilinx_pci.c index 7ed6647..f1a5112 100644 --- a/arch/microblaze/pci/xilinx_pci.c +++ b/arch/microblaze/pci/xilinx_pci.c @@ -114,9 +114,4 @@ void __init xilinx_pci_init(void) out_be32(pci_reg + XPLB_PCI_BUS, 0x000000ff); iounmap(pci_reg); - /* Register the host bridge with the linux kernel! */ - pci_process_bridge_OF_ranges(hose, pci_node, - INDIRECT_TYPE_SET_CFG_TYPE); - - pr_info("xilinx-pci: Registered PCI host bridge\n"); }