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MIPS: ip22: Drop addr_is_ram

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It can be replaced by page_is_ram.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: yasha.che3@gmail.com
Cc: aurelien@aurel32.net
Cc: sfr@canb.auug.org.au
Cc: fancer.lancer@gmail.com
Cc: matt.redfearn@mips.com
Cc: chenhc@lemote.com
This commit is contained in:
Jiaxun Yang 2019-08-19 22:23:10 +08:00 committed by Paul Burton
parent b3c948e2c0
commit aa1edac13e
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GPG Key ID: 3EA79FACB57500DD
1 changed files with 2 additions and 18 deletions
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20
arch/mips/sgi-ip22/ip28-berr.c
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@ -8,6 +8,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/sched/debug.h>
#include <linux/sched/signal.h>
@ -300,23 +301,6 @@ static void print_buserr(const struct pt_regs *regs)
field, regs->cp0_epc, field, regs->regs[31]);
}
/*
* Check, whether MC's (virtual) DMA address caused the bus error.
* See "Virtual DMA Specification", Draft 1.5, Feb 13 1992, SGI
*/
static int addr_is_ram(unsigned long addr, unsigned sz)
{
int i;
for (i = 0; i < boot_mem_map.nr_map; i++) {
unsigned long a = boot_mem_map.map[i].addr;
if (a <= addr && addr+sz <= a+boot_mem_map.map[i].size)
return 1;
}
return 0;
}
static int check_microtlb(u32 hi, u32 lo, unsigned long vaddr)
{
/* This is likely rather similar to correct code ;-) */
@ -331,7 +315,7 @@ static int check_microtlb(u32 hi, u32 lo, unsigned long vaddr)
/* PTEIndex is VPN-low (bits [22:14]/[20:12] ?) */
unsigned long pte = (lo >> 6) << 12; /* PTEBase */
pte += 8*((vaddr >> pgsz) & 0x1ff);
if (addr_is_ram(pte, 8)) {
if (page_is_ram(PFN_DOWN(pte))) {
/*
* Note: Since DMA hardware does look up
* translation on its own, this PTE *must*