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Commit a3c0e0d0 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: pci: Consolidate pcibios_align_resource() definitions. 



This introduces a saner pcibios_align_resource() that can be used
regardless of whether pci-auto or pci-new are being used, and
consolidates it in pci-lib.c.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 98333851

arch/sh/boards/mach-se/7751/pci.c

+6 −3
Original line number Diff line number Diff line
@@ -30,6 +30,9 @@ 
#define PCIC_WRITE(x,v) writel((v), PCI_REG(x))

#define PCIC_READ(x) readl(PCI_REG(x))



#define xPCIBIOS_MIN_IO		board_pci_channels->io_resource->start

#define xPCIBIOS_MIN_MEM	board_pci_channels->mem_resource->start



/*

 * Description:  This function sets up and initializes the pcic, sets

 * up the BARS, maps the DRAM into the address space etc, etc.
@@ -97,12 +100,12 @@ int __init pcibios_init_platform(void) 
    * meaning all calls go straight through... use BUG_ON to

    * catch erroneous assumption.

    */

   BUG_ON(PCIBIOS_MIN_MEM != SH7751_PCI_MEMORY_BASE);

   BUG_ON(xPCIBIOS_MIN_MEM != SH7751_PCI_MEMORY_BASE);



   PCIC_WRITE(SH7751_PCIMBR, PCIBIOS_MIN_MEM);

   PCIC_WRITE(SH7751_PCIMBR, xPCIBIOS_MIN_MEM);



   /* Set IOBR for window containing area specified in pci.h */

   PCIC_WRITE(SH7751_PCIIOBR, (PCIBIOS_MIN_IO & SH7751_PCIIOBR_MASK));

   PCIC_WRITE(SH7751_PCIIOBR, (xPCIBIOS_MIN_IO & SH7751_PCIIOBR_MASK));



   /* All done, may as well say so... */

   printk("SH7751 PCI: Finished initialization of the PCI controller\n");

arch/sh/drivers/pci/pci-lib.c

+42 −0
Original line number Diff line number Diff line
@@ -4,6 +4,41 @@ 
#include <linux/types.h>

#include <linux/pci.h>



unsigned long PCIBIOS_MIN_IO = 0x0000;

unsigned long PCIBIOS_MIN_MEM = 0;



/*

 * We need to avoid collisions with `mirrored' VGA ports

 * and other strange ISA hardware, so we always want the

 * addresses to be allocated in the 0x000-0x0ff region

 * modulo 0x400.

 */

void pcibios_align_resource(void *data, struct resource *res,

			    resource_size_t size, resource_size_t align)

{

	struct pci_dev *dev = data;

	struct pci_channel *chan = dev->sysdata;

	resource_size_t start = res->start;



	if (res->flags & IORESOURCE_IO) {

		if (start < PCIBIOS_MIN_IO + chan->io_resource->start)

			start = PCIBIOS_MIN_IO + chan->io_resource->start;



		/*

                 * Put everything into 0x00-0xff region modulo 0x400.

		 */

		if (start & 0x300) {

			start = (start + 0x3ff) & ~0x3ff;

			res->start = start;

		}

	} else if (res->flags & IORESOURCE_MEM) {

		if (start < PCIBIOS_MIN_MEM + chan->mem_resource->start)

			start = PCIBIOS_MIN_MEM + chan->mem_resource->start;

	}



	res->start = start;

}



int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,

			enum pci_mmap_state mmap_state, int write_combine)

{
@@ -24,3 +59,10 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 
			       vma->vm_end - vma->vm_start,

			       vma->vm_page_prot);

}



#ifdef CONFIG_HOTPLUG

EXPORT_SYMBOL(pcibios_resource_to_bus);

EXPORT_SYMBOL(pcibios_bus_to_resource);

EXPORT_SYMBOL(PCIBIOS_MIN_IO);

EXPORT_SYMBOL(PCIBIOS_MIN_MEM);

#endif

arch/sh/drivers/pci/pci-new.c

+0 −23
Original line number Diff line number Diff line
@@ -129,29 +129,6 @@ pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, 
	res->end = region->end + offset;

}



void pcibios_align_resource(void *data, struct resource *res,

			    resource_size_t size, resource_size_t align)

			    __attribute__ ((weak));



/*

 * We need to avoid collisions with `mirrored' VGA ports

 * and other strange ISA hardware, so we always want the

 * addresses to be allocated in the 0x000-0x0ff region

 * modulo 0x400.

 */

void pcibios_align_resource(void *data, struct resource *res,

			    resource_size_t size, resource_size_t align)

{

	if (res->flags & IORESOURCE_IO) {

		resource_size_t start = res->start;



		if (start & 0x300) {

			start = (start + 0x3ff) & ~0x3ff;

			res->start = start;

		}

	}

}



int pcibios_enable_device(struct pci_dev *dev, int mask)

{

	u16 cmd, old_cmd;

arch/sh/drivers/pci/pci.c

+0 −23
Original line number Diff line number Diff line
@@ -86,29 +86,6 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, 
	res->end = region->end;

}



void pcibios_align_resource(void *data, struct resource *res,

			    resource_size_t size, resource_size_t align)

			    __attribute__ ((weak));



/*

 * We need to avoid collisions with `mirrored' VGA ports

 * and other strange ISA hardware, so we always want the

 * addresses to be allocated in the 0x000-0x0ff region

 * modulo 0x400.

 */

void pcibios_align_resource(void *data, struct resource *res,

			    resource_size_t size, resource_size_t align)

{

	if (res->flags & IORESOURCE_IO) {

		resource_size_t start = res->start;



		if (start & 0x300) {

			start = (start + 0x3ff) & ~0x3ff;

			res->start = start;

		}

	}

}



int pcibios_enable_device(struct pci_dev *dev, int mask)

{

	u16 cmd, old_cmd;

arch/sh/include/asm/pci.h

+1 −4
Original line number Diff line number Diff line
@@ -33,10 +33,7 @@ struct pci_channel { 
 */

extern struct pci_channel board_pci_channels[];



/* ugly as hell, but makes drivers/pci/setup-res.c compile and work */

#define __PCI_CHAN(bus)		((struct pci_channel *)bus->sysdata)

#define PCIBIOS_MIN_IO		__PCI_CHAN(bus)->io_resource->start

#define PCIBIOS_MIN_MEM		__PCI_CHAN(bus)->mem_resource->start

extern unsigned long PCIBIOS_MIN_IO, PCIBIOS_MIN_MEM;



struct pci_dev;