diff options
author | Max Filippov <jcmvbkbc@gmail.com> | 2018-10-15 22:33:51 +0300 |
---|---|---|
committer | Max Filippov <jcmvbkbc@gmail.com> | 2019-06-17 09:31:28 +0300 |
commit | 88804e680bac74114cecd2e565eef9a678daacd0 (patch) | |
tree | 274d6abe50bae28b8267ea4a5207ccf5b7d05a33 /arch/xtensa/kernel/pci.c | |
parent | 2a97d60cf6a53123f5a0f066b7b219410eccd0dc (diff) | |
download | linux-88804e680bac74114cecd2e565eef9a678daacd0.tar.xz |
xtensa: drop dead PCI support code
xtensa-specific PCI initialization code has significantly bitrotted over
time because there's no platform that use it. Get rid of remaining
non-functioning initialization and remove platform_pcibios_* interface.
A new platform that would use PCI on xtensa will configure PCI
controller using device tree.
Drop variables pci_ctrl_head, pci_bus_count and functions pcibios_init,
pci_controller_apertures, platform_pcibios_init and
platform_pcibios_fixup.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/pci.c')
-rw-r--r-- | arch/xtensa/kernel/pci.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c index e0235e34e1ba..14effa40eb7d 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -24,22 +24,6 @@ #include <asm/pci-bridge.h> #include <asm/platform.h> -/* PCI Controller */ - - -/* - * pcibios_alloc_controller - * pcibios_enable_device - * pcibios_fixups - * pcibios_align_resource - * pcibios_fixup_bus - * pci_bus_add_device - */ - -static struct pci_controller *pci_ctrl_head; - -static int pci_bus_count; - /* * We need to avoid collisions with `mirrored' VGA ports * and other strange ISA hardware, so we always want the @@ -74,81 +58,6 @@ pcibios_align_resource(void *data, const struct resource *res, return start; } -static void __init pci_controller_apertures(struct pci_controller *pci_ctrl, - struct list_head *resources) -{ - struct resource *res; - unsigned long io_offset; - int i; - - io_offset = (unsigned long)pci_ctrl->io_space.base; - res = &pci_ctrl->io_resource; - if (!res->flags) { - if (io_offset) - pr_err("I/O resource not set for host bridge %d\n", - pci_ctrl->index); - res->start = 0; - res->end = IO_SPACE_LIMIT; - res->flags = IORESOURCE_IO; - } - res->start += io_offset; - res->end += io_offset; - pci_add_resource_offset(resources, res, io_offset); - - for (i = 0; i < 3; i++) { - res = &pci_ctrl->mem_resources[i]; - if (!res->flags) { - if (i > 0) - continue; - pr_err("Memory resource not set for host bridge %d\n", - pci_ctrl->index); - res->start = 0; - res->end = ~0U; - res->flags = IORESOURCE_MEM; - } - pci_add_resource(resources, res); - } -} - -static int __init pcibios_init(void) -{ - struct pci_controller *pci_ctrl; - struct list_head resources; - struct pci_bus *bus; - int next_busno = 0, ret; - - pr_info("PCI: Probing PCI hardware\n"); - - /* Scan all of the recorded PCI controllers. */ - for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) { - pci_ctrl->last_busno = 0xff; - INIT_LIST_HEAD(&resources); - pci_controller_apertures(pci_ctrl, &resources); - bus = pci_scan_root_bus(NULL, pci_ctrl->first_busno, - pci_ctrl->ops, pci_ctrl, &resources); - if (!bus) - continue; - - pci_ctrl->bus = bus; - pci_ctrl->last_busno = bus->busn_res.end; - if (next_busno <= pci_ctrl->last_busno) - next_busno = pci_ctrl->last_busno+1; - } - pci_bus_count = next_busno; - ret = platform_pcibios_fixup(); - if (ret) - return ret; - - for (pci_ctrl = pci_ctrl_head; pci_ctrl; pci_ctrl = pci_ctrl->next) { - if (pci_ctrl->bus) - pci_bus_add_devices(pci_ctrl->bus); - } - - return 0; -} - -subsys_initcall(pcibios_init); - void pcibios_fixup_bus(struct pci_bus *bus) { if (bus->parent) { |