linux-kernel - Re: [PATCH] Make CARDBUS_MEM_SIZE and CARDBUS_IO

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Date:	Tue, 23 Jan 2007 23:50:29 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>, sshtylyov@...mvista.com,
	Eric.Piel@...l.fr, ralf@...ux-mips.org,
	linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org
Subject: Re: [PATCH] Make CARDBUS_MEM_SIZE and CARDBUS_IO_SIZE customizable

On Tue, 23 Jan 2007 23:45:07 -0800
Andrew Morton <akpm@...l.org> wrote:

> setup-bus.o is linked only on x86

oops, that's untrue.  But it will break ppc32, I think.

I suppose we can deprive the ppc32 guys of eight bytes of RAM.  But putting
cardbus things in pci.c seems wrong..


diff -puN drivers/pci/pci.c~make-cardbus_mem_size-and-cardbus_io_size-boot-options-fix drivers/pci/pci.c
--- a/drivers/pci/pci.c~make-cardbus_mem_size-and-cardbus_io_size-boot-options-fix
+++ a/drivers/pci/pci.c
@@ -21,6 +21,12 @@
 
 unsigned int pci_pm_d3_delay = 10;
 
+#define DEFAULT_CARDBUS_IO_SIZE		(256)
+#define DEFAULT_CARDBUS_MEM_SIZE	(64*1024*1024)
+/* pci=cbmemsize=nnM,cbiosize=nn can override this */
+unsigned long pci_cardbus_io_size = DEFAULT_CARDBUS_IO_SIZE;
+unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
+
 /**
  * pci_bus_max_busnr - returns maximum PCI bus number of given bus' children
  * @bus: pointer to PCI bus structure to search
@@ -1213,11 +1219,9 @@ static int __devinit pci_setup(char *str
 			if (!strcmp(str, "nomsi")) {
 				pci_no_msi();
 			} else if (!strncmp(str, "cbiosize=", 9)) {
-				pci_cardbus_io_size =
-					memparse(str + 9, &str);
+				pci_cardbus_io_size = memparse(str + 9, &str);
 			} else if (!strncmp(str, "cbmemsize=", 10)) {
-				pci_cardbus_mem_size =
-					memparse(str + 10, &str);
+				pci_cardbus_mem_size = memparse(str + 10, &str);
 			} else {
 				printk(KERN_ERR "PCI: Unknown option `%s'\n",
 						str);
diff -puN drivers/pci/setup-bus.c~make-cardbus_mem_size-and-cardbus_io_size-boot-options-fix drivers/pci/setup-bus.c
--- a/drivers/pci/setup-bus.c~make-cardbus_mem_size-and-cardbus_io_size-boot-options-fix
+++ a/drivers/pci/setup-bus.c
@@ -36,16 +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 DEFAULT_CARDBUS_IO_SIZE		(256)
-#define DEFAULT_CARDBUS_MEM_SIZE	(64*1024*1024)
-/* pci=cbmemsize=nnM,cbiosize=nn can override this */
-unsigned long pci_cardbus_io_size = DEFAULT_CARDBUS_IO_SIZE;
-unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
-
 static void __devinit
 pbus_assign_resources_sorted(struct pci_bus *bus)
 {
_

-
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