pci-dma.c File Reference

#include <linux/init.h>
#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/scatterlist.h>
#include <linux/export.h>
#include <asm/cacheflush.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
#include <asm/uaccess.h>
#include <asm/tlbflush.h>

Go to the source code of this file.

Macros
#define	DBG_RES(x...)
#define	PCXL_SEARCH_LOOP(idx, mask, size)
#define	PCXL_FIND_FREE_MAPPING(idx, mask, size)
#define	PCXL_FREE_MAPPINGS(idx, m, size)

Functions
unsigned long	pcxl_alloc_range (size_t size)
	__initcall (pcxl_dma_init)

Variables
unsigned long	pcxl_dma_start
struct hppa_dma_ops	pcxl_dma_ops
struct hppa_dma_ops	pcx_dma_ops

Macro Definition Documentation

#define DBG_RES

(

x...

)

Definition at line 52 of file pci-dma.c.

#define PCXL_FIND_FREE_MAPPING	(		idx,
			mask,
			size
	)

Value:

{ \
       u##size *res_ptr = (u##size *)&(pcxl_res_map[pcxl_res_hint & ~((size >> 3) - 1)]); \
       u##size *res_end = (u##size *)&pcxl_res_map[pcxl_res_size]; \
       PCXL_SEARCH_LOOP(idx, mask, size); \
       res_ptr = (u##size *)&pcxl_res_map[0]; \
       PCXL_SEARCH_LOOP(idx, mask, size); \
}

Definition at line 241 of file pci-dma.c.

#define PCXL_FREE_MAPPINGS	(		idx,
			m,
			size
	)

Value:

u##size *res_ptr = (u##size *)&(pcxl_res_map[(idx) + (((size >> 3) - 1) & (~((size >> 3) - 1)))]); \
        /* BUG_ON((*res_ptr & m) != m); */ \
        *res_ptr &= ~m;

Definition at line 297 of file pci-dma.c.

#define PCXL_SEARCH_LOOP	(		idx,
			mask,
			size
	)

Value:

for(; res_ptr < res_end; ++res_ptr) \
       { \
               if(0 == ((*res_ptr) & mask)) { \
                       *res_ptr |= mask; \
               idx = (int)((u_long)res_ptr - (u_long)pcxl_res_map); \
               pcxl_res_hint = idx + (size >> 3); \
                       goto resource_found; \
               } \
       }

Definition at line 230 of file pci-dma.c.

Function Documentation

__initcall

(

pcxl_dma_init

)

unsigned long pcxl_alloc_range

(

size_t

size

)

Definition at line 250 of file pci-dma.c.

Variable Documentation

struct hppa_dma_ops pcx_dma_ops

Initial value:

= {
    .dma_supported =    pa11_dma_supported,
    .alloc_consistent = fail_alloc_consistent,
    .alloc_noncoherent =    pa11_dma_alloc_noncoherent,
    .free_consistent =  pa11_dma_free_noncoherent,
    .map_single =       pa11_dma_map_single,
    .unmap_single =     pa11_dma_unmap_single,
    .map_sg =       pa11_dma_map_sg,
    .unmap_sg =     pa11_dma_unmap_sg,
    .dma_sync_single_for_cpu =  pa11_dma_sync_single_for_cpu,
    .dma_sync_single_for_device =   pa11_dma_sync_single_for_device,
    .dma_sync_sg_for_cpu =      pa11_dma_sync_sg_for_cpu,
    .dma_sync_sg_for_device =   pa11_dma_sync_sg_for_device,
}

Definition at line 583 of file pci-dma.c.

struct hppa_dma_ops pcxl_dma_ops

Initial value:

= {
    .dma_supported =    pa11_dma_supported,
    .alloc_consistent = pa11_dma_alloc_consistent,
    .alloc_noncoherent =    pa11_dma_alloc_consistent,
    .free_consistent =  pa11_dma_free_consistent,
    .map_single =       pa11_dma_map_single,
    .unmap_single =     pa11_dma_unmap_single,
    .map_sg =       pa11_dma_map_sg,
    .unmap_sg =     pa11_dma_unmap_sg,
    .dma_sync_single_for_cpu = pa11_dma_sync_single_for_cpu,
    .dma_sync_single_for_device = pa11_dma_sync_single_for_device,
    .dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu,
    .dma_sync_sg_for_device = pa11_dma_sync_sg_for_device,
}

Definition at line 543 of file pci-dma.c.

unsigned long pcxl_dma_start