From 4516a618a76eae6eb1b37259ad49f39b7b7f33d8 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Mon, 5 Feb 2007 16:36:06 -0800 Subject: PCI: Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE boot options CARDBUS_MEM_SIZE was increased to 64MB on 2.6.20-rc2, but larger size might result in allocation failure for the reserving itself on some platforms (for example typical 32bit MIPS). Make it (and CARDBUS_IO_SIZE too) customizable by "pci=" option for such platforms. Signed-off-by: Atsushi Nemoto Cc: Daniel Ritz Cc: Ralf Baechle Cc: Ivan Kokshaysky Cc: Dominik Brodowski Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- drivers/pci/setup-bus.c | 27 ++++++++++----------------- 1 file changed, 10 insertions(+), 17 deletions(-) (limited to 'drivers/pci/setup-bus.c') diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 89f3036..3554f39 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -36,13 +36,6 @@ #define ROUND_UP(x, a) (((x) + (a) - 1) & ~((a) - 1)) -/* - * FIXME: IO should be max 256 bytes. However, since we may - * have a P2P bridge below a cardbus bridge, we need 4K. - */ -#define CARDBUS_IO_SIZE (256) -#define CARDBUS_MEM_SIZE (64*1024*1024) - static void __devinit pbus_assign_resources_sorted(struct pci_bus *bus) { @@ -415,12 +408,12 @@ pci_bus_size_cardbus(struct pci_bus *bus) * Reserve some resources for CardBus. We reserve * a fixed amount of bus space for CardBus bridges. */ - b_res[0].start = CARDBUS_IO_SIZE; - b_res[0].end = b_res[0].start + CARDBUS_IO_SIZE - 1; + b_res[0].start = pci_cardbus_io_size; + b_res[0].end = b_res[0].start + pci_cardbus_io_size - 1; b_res[0].flags |= IORESOURCE_IO; - b_res[1].start = CARDBUS_IO_SIZE; - b_res[1].end = b_res[1].start + CARDBUS_IO_SIZE - 1; + b_res[1].start = pci_cardbus_io_size; + b_res[1].end = b_res[1].start + pci_cardbus_io_size - 1; b_res[1].flags |= IORESOURCE_IO; /* @@ -440,16 +433,16 @@ pci_bus_size_cardbus(struct pci_bus *bus) * twice the size. */ if (ctrl & PCI_CB_BRIDGE_CTL_PREFETCH_MEM0) { - b_res[2].start = CARDBUS_MEM_SIZE; - b_res[2].end = b_res[2].start + CARDBUS_MEM_SIZE - 1; + b_res[2].start = pci_cardbus_mem_size; + b_res[2].end = b_res[2].start + pci_cardbus_mem_size - 1; b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH; - b_res[3].start = CARDBUS_MEM_SIZE; - b_res[3].end = b_res[3].start + CARDBUS_MEM_SIZE - 1; + b_res[3].start = pci_cardbus_mem_size; + b_res[3].end = b_res[3].start + pci_cardbus_mem_size - 1; b_res[3].flags |= IORESOURCE_MEM; } else { - b_res[3].start = CARDBUS_MEM_SIZE * 2; - b_res[3].end = b_res[3].start + CARDBUS_MEM_SIZE * 2 - 1; + b_res[3].start = pci_cardbus_mem_size * 2; + b_res[3].end = b_res[3].start + pci_cardbus_mem_size * 2 - 1; b_res[3].flags |= IORESOURCE_MEM; } } -- cgit v1.1