openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

MIPS/jazzdma: remove the unused vdma_remap function 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Christoph Hellwig 2020-08-17 19:31:25 +02:00
parent cbf1449ba5
commit a4877c44a4
2 changed files with 0 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/mips/include/asm/jazzdma.h
View File

@ -10,8 +10,6 @@
*/
extern unsigned long vdma_alloc(unsigned long paddr, unsigned long size);
extern int vdma_free(unsigned long laddr);
extern int vdma_remap(unsigned long laddr, unsigned long paddr,
unsigned long size);
extern unsigned long vdma_phys2log(unsigned long paddr);
extern unsigned long vdma_log2phys(unsigned long laddr);
extern void vdma_stats(void); /* for debugging only */

70
arch/mips/jazz/jazzdma.c
View File

@ -209,76 +209,6 @@ int vdma_free(unsigned long laddr)
EXPORT_SYMBOL(vdma_free);
/*
* Map certain page(s) to another physical address.
* Caller must have allocated the page(s) before.
*/
int vdma_remap(unsigned long laddr, unsigned long paddr, unsigned long size)
{
int first, pages;
if (laddr > 0xffffff) {
if (vdma_debug)
printk
("vdma_map: Invalid logical address: %08lx\n",
laddr);
return -EINVAL; /* invalid logical address */
}
if (paddr > 0x1fffffff) {
if (vdma_debug)
printk
("vdma_map: Invalid physical address: %08lx\n",
paddr);
return -EINVAL; /* invalid physical address */
}
pages = (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
first = laddr >> 12;
if (vdma_debug)
printk("vdma_remap: first=%x, pages=%x\n", first, pages);
if (first + pages > VDMA_PGTBL_ENTRIES) {
if (vdma_debug)
printk("vdma_alloc: Invalid size: %08lx\n", size);
return -EINVAL;
}
paddr &= ~(VDMA_PAGESIZE - 1);
while (pages > 0 && first < VDMA_PGTBL_ENTRIES) {
if (pgtbl[first].owner != laddr) {
if (vdma_debug)
printk("Trying to remap other's pages.\n");
return -EPERM; /* not owner */
}
pgtbl[first].frame = paddr;
paddr += VDMA_PAGESIZE;
first++;
pages--;
}
/*
* Update translation table
*/
r4030_write_reg32(JAZZ_R4030_TRSTBL_INV, 0);
if (vdma_debug > 2) {
int i;
pages = (((paddr & (VDMA_PAGESIZE - 1)) + size) >> 12) + 1;
first = laddr >> 12;
printk("LADDR: ");
for (i = first; i < first + pages; i++)
printk("%08x ", i << 12);
printk("\nPADDR: ");
for (i = first; i < first + pages; i++)
printk("%08x ", pgtbl[i].frame);
printk("\nOWNER: ");
for (i = first; i < first + pages; i++)
printk("%08x ", pgtbl[i].owner);
printk("\n");
}
return 0;
}
/*
* Translate a physical address to a logical address.
* This will return the logical address of the first