diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 18:19:05 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-01 18:19:05 -0700 |
commit | 61464c8357c8f6b780e4c44f5c79471799c51ca7 (patch) | |
tree | 4509cf075403965528f380f2f825c46908fb7d4e /arch/arm/kernel/bios32.c | |
parent | 47061eda2584b9e4516d1e3a9713406a3a559ac8 (diff) | |
parent | 9cf1c871526cf6bfec2a653e1e068ee72592542c (diff) |
Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM soc general cleanups from Olof Johansson:
"This is a large branch that contains a handful of different cleanups:
- Fixing up the I/O space remapping on PCI on ARM. This is a series
from Rob Herring that restructures how all pci devices allocate I/O
space, and it's part of the work to allow multiplatform kernels.
- A number of cleanup series for OMAP, moving and removing some
headers, sparse irq rework and in general preparation for
multiplatform.
- Final removal of all non-DT boards for Tegra, it is now
device-tree-only!
- Removal of a stale platform, nxp4008. It's an old mobile chipset
that is no longer in use, and was very likely never really used
with a mainline kernel. We have not been able to find anyone
interested in keeping it around in the kernel.
- Removal of the legacy dmaengine driver on tegra
+ A handful of other things that I haven't described above."
Fix up some conflicts with the staging tree (and because nxp4008 was
removed)
* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (184 commits)
ARM: OMAP2+: serial: Change MAX_HSUART_PORTS to 6
ARM: OMAP4: twl-common: Support for additional devices on i2c1 bus
ARM: mmp: using for_each_set_bit to simplify the code
ARM: tegra: harmony: fix ldo7 regulator-name
ARM: OMAP2+: Make omap4-keypad.h local
ARM: OMAP2+: Make l4_3xxx.h local
ARM: OMAP2+: Make l4_2xxx.h local
ARM: OMAP2+: Make l3_3xxx.h local
ARM: OMAP2+: Make l3_2xxx.h local
ARM: OMAP1: Move irda.h from plat to mach
ARM: OMAP2+: Make hdq1w.h local
ARM: OMAP2+: Make gpmc-smsc911x.h local
ARM: OMAP2+: Make gpmc-smc91x.h local
ARM: OMAP1: Move flash.h from plat to mach
ARM: OMAP2+: Make debug-devices.h local
ARM: OMAP1: Move board-voiceblue.h from plat to mach
ARM: OMAP1: Move board-sx1.h from plat to mach
ARM: OMAP2+: Make omap-wakeupgen.h local
ARM: OMAP2+: Make omap-secure.h local
ARM: OMAP2+: Make ctrl_module_wkup_44xx.h local
...
Diffstat (limited to 'arch/arm/kernel/bios32.c')
-rw-r--r-- | arch/arm/kernel/bios32.c | 54 |
1 files changed, 49 insertions, 5 deletions
diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index 9cf16b83bbb5..9b722612553d 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -13,6 +13,7 @@ #include <linux/io.h> #include <asm/mach-types.h> +#include <asm/mach/map.h> #include <asm/mach/pci.h> static int debug_pci; @@ -414,6 +415,38 @@ static int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) return irq; } +static int __init pcibios_init_resources(int busnr, struct pci_sys_data *sys) +{ + int ret; + struct pci_host_bridge_window *window; + + if (list_empty(&sys->resources)) { + pci_add_resource_offset(&sys->resources, + &iomem_resource, sys->mem_offset); + } + + list_for_each_entry(window, &sys->resources, list) { + if (resource_type(window->res) == IORESOURCE_IO) + return 0; + } + + sys->io_res.start = (busnr * SZ_64K) ? : pcibios_min_io; + sys->io_res.end = (busnr + 1) * SZ_64K - 1; + sys->io_res.flags = IORESOURCE_IO; + sys->io_res.name = sys->io_res_name; + sprintf(sys->io_res_name, "PCI%d I/O", busnr); + + ret = request_resource(&ioport_resource, &sys->io_res); + if (ret) { + pr_err("PCI: unable to allocate I/O port region (%d)\n", ret); + return ret; + } + pci_add_resource_offset(&sys->resources, &sys->io_res, + sys->io_offset); + + return 0; +} + static void __init pcibios_init_hw(struct hw_pci *hw, struct list_head *head) { struct pci_sys_data *sys = NULL; @@ -436,11 +469,10 @@ static void __init pcibios_init_hw(struct hw_pci *hw, struct list_head *head) ret = hw->setup(nr, sys); if (ret > 0) { - if (list_empty(&sys->resources)) { - pci_add_resource_offset(&sys->resources, - &ioport_resource, sys->io_offset); - pci_add_resource_offset(&sys->resources, - &iomem_resource, sys->mem_offset); + ret = pcibios_init_resources(nr, sys); + if (ret) { + kfree(sys); + break; } if (hw->scan) @@ -618,3 +650,15 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, return 0; } + +void __init pci_map_io_early(unsigned long pfn) +{ + struct map_desc pci_io_desc = { + .virtual = PCI_IO_VIRT_BASE, + .type = MT_DEVICE, + .length = SZ_64K, + }; + + pci_io_desc.pfn = pfn; + iotable_init(&pci_io_desc, 1); +} |