mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 11:13:58 +08:00
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
This commit is contained in:
Linus Torvalds
commit
c4a7c77fcb
@ -249,8 +249,6 @@ struct tt_entry *sparc_ttable;
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struct pt_regs fake_swapper_regs;
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extern void paging_init(void);
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void __init setup_arch(char **cmdline_p)
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{
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int i;
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@ -540,8 +540,11 @@ bootup_user_stack_end:
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prom_tba: .xword 0
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tlb_type: .word 0 /* Must NOT end up in BSS */
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.section ".fixup",#alloc,#execinstr
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.globl __ret_efault
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.globl __ret_efault, __retl_efault
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__ret_efault:
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ret
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restore %g0, -EFAULT, %o0
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__retl_efault:
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retl
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mov -EFAULT, %o0
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@ -31,6 +31,7 @@
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#include <asm/visasm.h>
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#include <asm/spitfire.h>
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#include <asm/page.h>
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#include <asm/cpudata.h>
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/* Returning from ptrace is a bit tricky because the syscall return
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* low level code assumes any value returned which is negative and
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@ -132,12 +133,16 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
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if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) {
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unsigned long start = __pa(kaddr);
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unsigned long end = start + len;
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unsigned long dcache_line_size;
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dcache_line_size = local_cpu_data().dcache_line_size;
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if (tlb_type == spitfire) {
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for (; start < end; start += 32)
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for (; start < end; start += dcache_line_size)
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spitfire_put_dcache_tag(start & 0x3fe0, 0x0);
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} else {
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for (; start < end; start += 32)
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start &= ~(dcache_line_size - 1);
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for (; start < end; start += dcache_line_size)
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__asm__ __volatile__(
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"stxa %%g0, [%0] %1\n\t"
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"membar #Sync"
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@ -150,8 +155,11 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
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if (write && tlb_type == spitfire) {
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unsigned long start = (unsigned long) kaddr;
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unsigned long end = start + len;
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unsigned long icache_line_size;
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for (; start < end; start += 32)
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icache_line_size = local_cpu_data().icache_line_size;
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for (; start < end; start += icache_line_size)
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flushi(start);
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}
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}
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@ -464,8 +464,6 @@ static void __init boot_flags_init(char *commands)
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}
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}
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extern int prom_probe_memory(void);
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extern unsigned long start, end;
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extern void panic_setup(char *, int *);
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extern unsigned short root_flags;
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@ -492,12 +490,8 @@ void register_prom_callbacks(void)
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"' linux-.soft2 to .soft2");
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}
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extern void paging_init(void);
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void __init setup_arch(char **cmdline_p)
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{
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int i;
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/* Initialize PROM console and command line. */
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*cmdline_p = prom_getbootargs();
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strcpy(saved_command_line, *cmdline_p);
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@ -516,21 +510,6 @@ void __init setup_arch(char **cmdline_p)
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boot_flags_init(*cmdline_p);
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idprom_init();
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(void) prom_probe_memory();
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phys_base = 0xffffffffffffffffUL;
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for (i = 0; sp_banks[i].num_bytes != 0; i++) {
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unsigned long top;
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if (sp_banks[i].base_addr < phys_base)
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phys_base = sp_banks[i].base_addr;
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top = sp_banks[i].base_addr +
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sp_banks[i].num_bytes;
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}
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pfn_base = phys_base >> PAGE_SHIFT;
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kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
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kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
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if (!root_flags)
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root_mountflags &= ~MS_RDONLY;
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@ -157,173 +157,199 @@ sys32_socketcall: /* %o0=call, %o1=args */
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or %g2, %lo(__socketcall_table_begin), %g2
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jmpl %g2 + %o0, %g0
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nop
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do_einval:
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retl
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mov -EINVAL, %o0
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/* Each entry is exactly 32 bytes. */
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.align 32
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__socketcall_table_begin:
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/* Each entry is exactly 32 bytes. */
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do_sys_socket: /* sys_socket(int, int, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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1: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_socket), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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2: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_socket), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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3: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_bind: /* sys_bind(int fd, struct sockaddr *, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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4: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_bind), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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5: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_bind), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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6: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_connect: /* sys_connect(int, struct sockaddr *, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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7: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_connect), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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8: ldswa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_connect), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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9: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_listen: /* sys_listen(int, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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10: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_listen), %g1
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jmpl %g1 + %lo(sys_listen), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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11: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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nop
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do_sys_accept: /* sys_accept(int, struct sockaddr *, int *) */
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ldswa [%o1 + 0x0] %asi, %o0
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12: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_accept), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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13: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_accept), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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14: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_getsockname: /* sys_getsockname(int, struct sockaddr *, int *) */
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ldswa [%o1 + 0x0] %asi, %o0
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15: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_getsockname), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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16: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_getsockname), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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17: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_getpeername: /* sys_getpeername(int, struct sockaddr *, int *) */
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ldswa [%o1 + 0x0] %asi, %o0
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18: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_getpeername), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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19: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(sys_getpeername), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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20: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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do_sys_socketpair: /* sys_socketpair(int, int, int, int *) */
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ldswa [%o1 + 0x0] %asi, %o0
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21: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_socketpair), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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22: ldswa [%o1 + 0x8] %asi, %o2
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23: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_socketpair), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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24: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_send: /* sys_send(int, void *, size_t, unsigned int) */
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ldswa [%o1 + 0x0] %asi, %o0
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25: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_send), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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26: lduwa [%o1 + 0x8] %asi, %o2
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27: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_send), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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28: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_recv: /* sys_recv(int, void *, size_t, unsigned int) */
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ldswa [%o1 + 0x0] %asi, %o0
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29: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_recv), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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30: lduwa [%o1 + 0x8] %asi, %o2
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31: lduwa [%o1 + 0xc] %asi, %o3
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jmpl %g1 + %lo(sys_recv), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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32: lduwa [%o1 + 0x4] %asi, %o1
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nop
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nop
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do_sys_sendto: /* sys_sendto(int, u32, compat_size_t, unsigned int, u32, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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33: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_sendto), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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lduwa [%o1 + 0x10] %asi, %o4
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ldswa [%o1 + 0x14] %asi, %o5
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34: lduwa [%o1 + 0x8] %asi, %o2
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35: lduwa [%o1 + 0xc] %asi, %o3
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36: lduwa [%o1 + 0x10] %asi, %o4
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37: ldswa [%o1 + 0x14] %asi, %o5
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jmpl %g1 + %lo(sys_sendto), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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38: lduwa [%o1 + 0x4] %asi, %o1
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do_sys_recvfrom: /* sys_recvfrom(int, u32, compat_size_t, unsigned int, u32, u32) */
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ldswa [%o1 + 0x0] %asi, %o0
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39: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_recvfrom), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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lduwa [%o1 + 0x10] %asi, %o4
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lduwa [%o1 + 0x14] %asi, %o5
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40: lduwa [%o1 + 0x8] %asi, %o2
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41: lduwa [%o1 + 0xc] %asi, %o3
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42: lduwa [%o1 + 0x10] %asi, %o4
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43: lduwa [%o1 + 0x14] %asi, %o5
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jmpl %g1 + %lo(sys_recvfrom), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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44: lduwa [%o1 + 0x4] %asi, %o1
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do_sys_shutdown: /* sys_shutdown(int, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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45: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(sys_shutdown), %g1
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jmpl %g1 + %lo(sys_shutdown), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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46: ldswa [%o1 + 0x4] %asi, %o1
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nop
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nop
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nop
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nop
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do_sys_setsockopt: /* compat_sys_setsockopt(int, int, int, char *, int) */
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ldswa [%o1 + 0x0] %asi, %o0
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47: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_setsockopt), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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ldswa [%o1 + 0x10] %asi, %o4
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48: ldswa [%o1 + 0x8] %asi, %o2
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49: lduwa [%o1 + 0xc] %asi, %o3
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50: ldswa [%o1 + 0x10] %asi, %o4
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jmpl %g1 + %lo(compat_sys_setsockopt), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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51: ldswa [%o1 + 0x4] %asi, %o1
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nop
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do_sys_getsockopt: /* compat_sys_getsockopt(int, int, int, u32, u32) */
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ldswa [%o1 + 0x0] %asi, %o0
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52: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_getsockopt), %g1
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ldswa [%o1 + 0x8] %asi, %o2
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lduwa [%o1 + 0xc] %asi, %o3
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lduwa [%o1 + 0x10] %asi, %o4
|
||||
53: ldswa [%o1 + 0x8] %asi, %o2
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54: lduwa [%o1 + 0xc] %asi, %o3
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55: lduwa [%o1 + 0x10] %asi, %o4
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jmpl %g1 + %lo(compat_sys_getsockopt), %g0
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ldswa [%o1 + 0x4] %asi, %o1
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56: ldswa [%o1 + 0x4] %asi, %o1
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nop
|
||||
do_sys_sendmsg: /* compat_sys_sendmsg(int, struct compat_msghdr *, unsigned int) */
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ldswa [%o1 + 0x0] %asi, %o0
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57: ldswa [%o1 + 0x0] %asi, %o0
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sethi %hi(compat_sys_sendmsg), %g1
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lduwa [%o1 + 0x8] %asi, %o2
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||||
58: lduwa [%o1 + 0x8] %asi, %o2
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jmpl %g1 + %lo(compat_sys_sendmsg), %g0
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lduwa [%o1 + 0x4] %asi, %o1
|
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59: lduwa [%o1 + 0x4] %asi, %o1
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
do_sys_recvmsg: /* compat_sys_recvmsg(int, struct compat_msghdr *, unsigned int) */
|
||||
ldswa [%o1 + 0x0] %asi, %o0
|
||||
60: ldswa [%o1 + 0x0] %asi, %o0
|
||||
sethi %hi(compat_sys_recvmsg), %g1
|
||||
lduwa [%o1 + 0x8] %asi, %o2
|
||||
61: lduwa [%o1 + 0x8] %asi, %o2
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||||
jmpl %g1 + %lo(compat_sys_recvmsg), %g0
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lduwa [%o1 + 0x4] %asi, %o1
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||||
62: lduwa [%o1 + 0x4] %asi, %o1
|
||||
nop
|
||||
nop
|
||||
nop
|
||||
__socketcall_table_end:
|
||||
|
||||
do_einval:
|
||||
retl
|
||||
mov -EINVAL, %o0
|
||||
do_efault:
|
||||
retl
|
||||
mov -EFAULT, %o0
|
||||
|
||||
.section __ex_table
|
||||
.align 4
|
||||
.word __socketcall_table_begin, 0, __socketcall_table_end, do_efault
|
||||
.word 1b, __retl_efault, 2b, __retl_efault
|
||||
.word 3b, __retl_efault, 4b, __retl_efault
|
||||
.word 5b, __retl_efault, 6b, __retl_efault
|
||||
.word 7b, __retl_efault, 8b, __retl_efault
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||||
.word 9b, __retl_efault, 10b, __retl_efault
|
||||
.word 11b, __retl_efault, 12b, __retl_efault
|
||||
.word 13b, __retl_efault, 14b, __retl_efault
|
||||
.word 15b, __retl_efault, 16b, __retl_efault
|
||||
.word 17b, __retl_efault, 18b, __retl_efault
|
||||
.word 19b, __retl_efault, 20b, __retl_efault
|
||||
.word 21b, __retl_efault, 22b, __retl_efault
|
||||
.word 23b, __retl_efault, 24b, __retl_efault
|
||||
.word 25b, __retl_efault, 26b, __retl_efault
|
||||
.word 27b, __retl_efault, 28b, __retl_efault
|
||||
.word 29b, __retl_efault, 30b, __retl_efault
|
||||
.word 31b, __retl_efault, 32b, __retl_efault
|
||||
.word 33b, __retl_efault, 34b, __retl_efault
|
||||
.word 35b, __retl_efault, 36b, __retl_efault
|
||||
.word 37b, __retl_efault, 38b, __retl_efault
|
||||
.word 39b, __retl_efault, 40b, __retl_efault
|
||||
.word 41b, __retl_efault, 42b, __retl_efault
|
||||
.word 43b, __retl_efault, 44b, __retl_efault
|
||||
.word 45b, __retl_efault, 46b, __retl_efault
|
||||
.word 47b, __retl_efault, 48b, __retl_efault
|
||||
.word 49b, __retl_efault, 50b, __retl_efault
|
||||
.word 51b, __retl_efault, 52b, __retl_efault
|
||||
.word 53b, __retl_efault, 54b, __retl_efault
|
||||
.word 55b, __retl_efault, 56b, __retl_efault
|
||||
.word 57b, __retl_efault, 58b, __retl_efault
|
||||
.word 59b, __retl_efault, 60b, __retl_efault
|
||||
.word 61b, __retl_efault, 62b, __retl_efault
|
||||
.previous
|
||||
|
||||
@ -189,19 +189,18 @@ void spitfire_data_access_exception(struct pt_regs *regs, unsigned long sfsr, un
|
||||
|
||||
if (regs->tstate & TSTATE_PRIV) {
|
||||
/* Test if this comes from uaccess places. */
|
||||
unsigned long fixup;
|
||||
unsigned long g2 = regs->u_regs[UREG_G2];
|
||||
const struct exception_table_entry *entry;
|
||||
|
||||
if ((fixup = search_extables_range(regs->tpc, &g2))) {
|
||||
/* Ouch, somebody is trying ugly VM hole tricks on us... */
|
||||
entry = search_exception_tables(regs->tpc);
|
||||
if (entry) {
|
||||
/* Ouch, somebody is trying VM hole tricks on us... */
|
||||
#ifdef DEBUG_EXCEPTIONS
|
||||
printk("Exception: PC<%016lx> faddr<UNKNOWN>\n", regs->tpc);
|
||||
printk("EX_TABLE: insn<%016lx> fixup<%016lx> "
|
||||
"g2<%016lx>\n", regs->tpc, fixup, g2);
|
||||
printk("EX_TABLE: insn<%016lx> fixup<%016lx>\n",
|
||||
regs->tpc, entry->fixup);
|
||||
#endif
|
||||
regs->tpc = fixup;
|
||||
regs->tpc = entry->fixup;
|
||||
regs->tnpc = regs->tpc + 4;
|
||||
regs->u_regs[UREG_G2] = g2;
|
||||
return;
|
||||
}
|
||||
/* Shit... */
|
||||
@ -758,26 +757,12 @@ void __init cheetah_ecache_flush_init(void)
|
||||
ecache_flush_size = (2 * largest_size);
|
||||
ecache_flush_linesize = smallest_linesize;
|
||||
|
||||
/* Discover a physically contiguous chunk of physical
|
||||
* memory in 'sp_banks' of size ecache_flush_size calculated
|
||||
* above. Store the physical base of this area at
|
||||
* ecache_flush_physbase.
|
||||
*/
|
||||
for (node = 0; ; node++) {
|
||||
if (sp_banks[node].num_bytes == 0)
|
||||
break;
|
||||
if (sp_banks[node].num_bytes >= ecache_flush_size) {
|
||||
ecache_flush_physbase = sp_banks[node].base_addr;
|
||||
break;
|
||||
}
|
||||
}
|
||||
ecache_flush_physbase = find_ecache_flush_span(ecache_flush_size);
|
||||
|
||||
/* Note: Zero would be a valid value of ecache_flush_physbase so
|
||||
* don't use that as the success test. :-)
|
||||
*/
|
||||
if (sp_banks[node].num_bytes == 0) {
|
||||
if (ecache_flush_physbase == ~0UL) {
|
||||
prom_printf("cheetah_ecache_flush_init: Cannot find %d byte "
|
||||
"contiguous physical memory.\n", ecache_flush_size);
|
||||
"contiguous physical memory.\n",
|
||||
ecache_flush_size);
|
||||
prom_halt();
|
||||
}
|
||||
|
||||
@ -1346,16 +1331,12 @@ static int cheetah_fix_ce(unsigned long physaddr)
|
||||
/* Return non-zero if PADDR is a valid physical memory address. */
|
||||
static int cheetah_check_main_memory(unsigned long paddr)
|
||||
{
|
||||
int i;
|
||||
unsigned long vaddr = PAGE_OFFSET + paddr;
|
||||
|
||||
for (i = 0; ; i++) {
|
||||
if (sp_banks[i].num_bytes == 0)
|
||||
break;
|
||||
if (paddr >= sp_banks[i].base_addr &&
|
||||
paddr < (sp_banks[i].base_addr + sp_banks[i].num_bytes))
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
if (vaddr > (unsigned long) high_memory)
|
||||
return 0;
|
||||
|
||||
return kern_addr_valid(vaddr);
|
||||
}
|
||||
|
||||
void cheetah_cee_handler(struct pt_regs *regs, unsigned long afsr, unsigned long afar)
|
||||
@ -1610,10 +1591,10 @@ void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned
|
||||
/* OK, usermode access. */
|
||||
recoverable = 1;
|
||||
} else {
|
||||
unsigned long g2 = regs->u_regs[UREG_G2];
|
||||
unsigned long fixup = search_extables_range(regs->tpc, &g2);
|
||||
const struct exception_table_entry *entry;
|
||||
|
||||
if (fixup != 0UL) {
|
||||
entry = search_exception_tables(regs->tpc);
|
||||
if (entry) {
|
||||
/* OK, kernel access to userspace. */
|
||||
recoverable = 1;
|
||||
|
||||
@ -1632,9 +1613,8 @@ void cheetah_deferred_handler(struct pt_regs *regs, unsigned long afsr, unsigned
|
||||
* recoverable condition.
|
||||
*/
|
||||
if (recoverable) {
|
||||
regs->tpc = fixup;
|
||||
regs->tpc = entry->fixup;
|
||||
regs->tnpc = regs->tpc + 4;
|
||||
regs->u_regs[UREG_G2] = g2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -6,13 +6,6 @@
|
||||
|
||||
.text
|
||||
|
||||
kernel_unaligned_trap_fault:
|
||||
call kernel_mna_trap_fault
|
||||
nop
|
||||
retl
|
||||
nop
|
||||
.size kern_unaligned_trap_fault, .-kern_unaligned_trap_fault
|
||||
|
||||
.globl __do_int_store
|
||||
__do_int_store:
|
||||
rd %asi, %o4
|
||||
@ -51,24 +44,24 @@ __do_int_store:
|
||||
0:
|
||||
wr %o4, 0x0, %asi
|
||||
retl
|
||||
nop
|
||||
mov 0, %o0
|
||||
.size __do_int_store, .-__do_int_store
|
||||
|
||||
.section __ex_table
|
||||
.word 4b, kernel_unaligned_trap_fault
|
||||
.word 5b, kernel_unaligned_trap_fault
|
||||
.word 6b, kernel_unaligned_trap_fault
|
||||
.word 7b, kernel_unaligned_trap_fault
|
||||
.word 8b, kernel_unaligned_trap_fault
|
||||
.word 9b, kernel_unaligned_trap_fault
|
||||
.word 10b, kernel_unaligned_trap_fault
|
||||
.word 11b, kernel_unaligned_trap_fault
|
||||
.word 12b, kernel_unaligned_trap_fault
|
||||
.word 13b, kernel_unaligned_trap_fault
|
||||
.word 14b, kernel_unaligned_trap_fault
|
||||
.word 15b, kernel_unaligned_trap_fault
|
||||
.word 16b, kernel_unaligned_trap_fault
|
||||
.word 17b, kernel_unaligned_trap_fault
|
||||
.word 4b, __retl_efault
|
||||
.word 5b, __retl_efault
|
||||
.word 6b, __retl_efault
|
||||
.word 7b, __retl_efault
|
||||
.word 8b, __retl_efault
|
||||
.word 9b, __retl_efault
|
||||
.word 10b, __retl_efault
|
||||
.word 11b, __retl_efault
|
||||
.word 12b, __retl_efault
|
||||
.word 13b, __retl_efault
|
||||
.word 14b, __retl_efault
|
||||
.word 15b, __retl_efault
|
||||
.word 16b, __retl_efault
|
||||
.word 17b, __retl_efault
|
||||
.previous
|
||||
|
||||
.globl do_int_load
|
||||
@ -133,21 +126,21 @@ do_int_load:
|
||||
0:
|
||||
wr %o5, 0x0, %asi
|
||||
retl
|
||||
nop
|
||||
mov 0, %o0
|
||||
.size __do_int_load, .-__do_int_load
|
||||
|
||||
.section __ex_table
|
||||
.word 4b, kernel_unaligned_trap_fault
|
||||
.word 5b, kernel_unaligned_trap_fault
|
||||
.word 6b, kernel_unaligned_trap_fault
|
||||
.word 7b, kernel_unaligned_trap_fault
|
||||
.word 8b, kernel_unaligned_trap_fault
|
||||
.word 9b, kernel_unaligned_trap_fault
|
||||
.word 10b, kernel_unaligned_trap_fault
|
||||
.word 11b, kernel_unaligned_trap_fault
|
||||
.word 12b, kernel_unaligned_trap_fault
|
||||
.word 13b, kernel_unaligned_trap_fault
|
||||
.word 14b, kernel_unaligned_trap_fault
|
||||
.word 15b, kernel_unaligned_trap_fault
|
||||
.word 16b, kernel_unaligned_trap_fault
|
||||
.word 4b, __retl_efault
|
||||
.word 5b, __retl_efault
|
||||
.word 6b, __retl_efault
|
||||
.word 7b, __retl_efault
|
||||
.word 8b, __retl_efault
|
||||
.word 9b, __retl_efault
|
||||
.word 10b, __retl_efault
|
||||
.word 11b, __retl_efault
|
||||
.word 12b, __retl_efault
|
||||
.word 13b, __retl_efault
|
||||
.word 14b, __retl_efault
|
||||
.word 15b, __retl_efault
|
||||
.word 16b, __retl_efault
|
||||
.previous
|
||||
|
||||
@ -180,14 +180,14 @@ static void __attribute_used__ unaligned_panic(char *str, struct pt_regs *regs)
|
||||
die_if_kernel(str, regs);
|
||||
}
|
||||
|
||||
extern void do_int_load(unsigned long *dest_reg, int size,
|
||||
unsigned long *saddr, int is_signed, int asi);
|
||||
extern int do_int_load(unsigned long *dest_reg, int size,
|
||||
unsigned long *saddr, int is_signed, int asi);
|
||||
|
||||
extern void __do_int_store(unsigned long *dst_addr, int size,
|
||||
unsigned long src_val, int asi);
|
||||
extern int __do_int_store(unsigned long *dst_addr, int size,
|
||||
unsigned long src_val, int asi);
|
||||
|
||||
static inline void do_int_store(int reg_num, int size, unsigned long *dst_addr,
|
||||
struct pt_regs *regs, int asi, int orig_asi)
|
||||
static inline int do_int_store(int reg_num, int size, unsigned long *dst_addr,
|
||||
struct pt_regs *regs, int asi, int orig_asi)
|
||||
{
|
||||
unsigned long zero = 0;
|
||||
unsigned long *src_val_p = &zero;
|
||||
@ -219,7 +219,7 @@ static inline void do_int_store(int reg_num, int size, unsigned long *dst_addr,
|
||||
break;
|
||||
};
|
||||
}
|
||||
__do_int_store(dst_addr, size, src_val, asi);
|
||||
return __do_int_store(dst_addr, size, src_val, asi);
|
||||
}
|
||||
|
||||
static inline void advance(struct pt_regs *regs)
|
||||
@ -242,14 +242,14 @@ static inline int ok_for_kernel(unsigned int insn)
|
||||
return !floating_point_load_or_store_p(insn);
|
||||
}
|
||||
|
||||
void kernel_mna_trap_fault(void)
|
||||
static void kernel_mna_trap_fault(void)
|
||||
{
|
||||
struct pt_regs *regs = current_thread_info()->kern_una_regs;
|
||||
unsigned int insn = current_thread_info()->kern_una_insn;
|
||||
unsigned long g2 = regs->u_regs[UREG_G2];
|
||||
unsigned long fixup = search_extables_range(regs->tpc, &g2);
|
||||
const struct exception_table_entry *entry;
|
||||
|
||||
if (!fixup) {
|
||||
entry = search_exception_tables(regs->tpc);
|
||||
if (!entry) {
|
||||
unsigned long address;
|
||||
|
||||
address = compute_effective_address(regs, insn,
|
||||
@ -270,9 +270,8 @@ void kernel_mna_trap_fault(void)
|
||||
die_if_kernel("Oops", regs);
|
||||
/* Not reached */
|
||||
}
|
||||
regs->tpc = fixup;
|
||||
regs->tpc = entry->fixup;
|
||||
regs->tnpc = regs->tpc + 4;
|
||||
regs->u_regs [UREG_G2] = g2;
|
||||
|
||||
regs->tstate &= ~TSTATE_ASI;
|
||||
regs->tstate |= (ASI_AIUS << 24UL);
|
||||
@ -295,7 +294,7 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u
|
||||
kernel_mna_trap_fault();
|
||||
} else {
|
||||
unsigned long addr, *reg_addr;
|
||||
int orig_asi, asi;
|
||||
int orig_asi, asi, err;
|
||||
|
||||
addr = compute_effective_address(regs, insn,
|
||||
((insn >> 25) & 0x1f));
|
||||
@ -320,9 +319,10 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u
|
||||
switch (dir) {
|
||||
case load:
|
||||
reg_addr = fetch_reg_addr(((insn>>25)&0x1f), regs);
|
||||
do_int_load(reg_addr, size, (unsigned long *) addr,
|
||||
decode_signedness(insn), asi);
|
||||
if (unlikely(asi != orig_asi)) {
|
||||
err = do_int_load(reg_addr, size,
|
||||
(unsigned long *) addr,
|
||||
decode_signedness(insn), asi);
|
||||
if (likely(!err) && unlikely(asi != orig_asi)) {
|
||||
unsigned long val_in = *reg_addr;
|
||||
switch (size) {
|
||||
case 2:
|
||||
@ -344,16 +344,19 @@ asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, u
|
||||
break;
|
||||
|
||||
case store:
|
||||
do_int_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs,
|
||||
asi, orig_asi);
|
||||
err = do_int_store(((insn>>25)&0x1f), size,
|
||||
(unsigned long *) addr, regs,
|
||||
asi, orig_asi);
|
||||
break;
|
||||
|
||||
default:
|
||||
panic("Impossible kernel unaligned trap.");
|
||||
/* Not reached... */
|
||||
}
|
||||
advance(regs);
|
||||
if (unlikely(err))
|
||||
kernel_mna_trap_fault();
|
||||
else
|
||||
advance(regs);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -125,15 +125,11 @@ __strncpy_from_user:
|
||||
add %o2, %o3, %o0
|
||||
.size __strncpy_from_user, .-__strncpy_from_user
|
||||
|
||||
.section .fixup,#alloc,#execinstr
|
||||
.align 4
|
||||
4: retl
|
||||
mov -EFAULT, %o0
|
||||
|
||||
.section __ex_table,#alloc
|
||||
.align 4
|
||||
.word 60b, 4b
|
||||
.word 61b, 4b
|
||||
.word 62b, 4b
|
||||
.word 63b, 4b
|
||||
.word 64b, 4b
|
||||
.word 60b, __retl_efault
|
||||
.word 61b, __retl_efault
|
||||
.word 62b, __retl_efault
|
||||
.word 63b, __retl_efault
|
||||
.word 64b, __retl_efault
|
||||
.previous
|
||||
|
||||
@ -11,61 +11,56 @@
|
||||
|
||||
/* Calculating the exact fault address when using
|
||||
* block loads and stores can be very complicated.
|
||||
*
|
||||
* Instead of trying to be clever and handling all
|
||||
* of the cases, just fix things up simply here.
|
||||
*/
|
||||
|
||||
static unsigned long compute_size(unsigned long start, unsigned long size, unsigned long *offset)
|
||||
{
|
||||
unsigned long fault_addr = current_thread_info()->fault_address;
|
||||
unsigned long end = start + size;
|
||||
|
||||
if (fault_addr < start || fault_addr >= end) {
|
||||
*offset = 0;
|
||||
} else {
|
||||
*offset = start - fault_addr;
|
||||
size = end - fault_addr;
|
||||
}
|
||||
return size;
|
||||
}
|
||||
|
||||
unsigned long copy_from_user_fixup(void *to, const void __user *from, unsigned long size)
|
||||
{
|
||||
char *dst = to;
|
||||
const char __user *src = from;
|
||||
unsigned long offset;
|
||||
|
||||
while (size) {
|
||||
if (__get_user(*dst, src))
|
||||
break;
|
||||
dst++;
|
||||
src++;
|
||||
size--;
|
||||
}
|
||||
|
||||
if (size)
|
||||
memset(dst, 0, size);
|
||||
size = compute_size((unsigned long) from, size, &offset);
|
||||
if (likely(size))
|
||||
memset(to + offset, 0, size);
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
unsigned long copy_to_user_fixup(void __user *to, const void *from, unsigned long size)
|
||||
{
|
||||
char __user *dst = to;
|
||||
const char *src = from;
|
||||
unsigned long offset;
|
||||
|
||||
while (size) {
|
||||
if (__put_user(*src, dst))
|
||||
break;
|
||||
dst++;
|
||||
src++;
|
||||
size--;
|
||||
}
|
||||
|
||||
return size;
|
||||
return compute_size((unsigned long) to, size, &offset);
|
||||
}
|
||||
|
||||
unsigned long copy_in_user_fixup(void __user *to, void __user *from, unsigned long size)
|
||||
{
|
||||
char __user *dst = to;
|
||||
char __user *src = from;
|
||||
unsigned long fault_addr = current_thread_info()->fault_address;
|
||||
unsigned long start = (unsigned long) to;
|
||||
unsigned long end = start + size;
|
||||
|
||||
while (size) {
|
||||
char tmp;
|
||||
if (fault_addr >= start && fault_addr < end)
|
||||
return end - fault_addr;
|
||||
|
||||
if (__get_user(tmp, src))
|
||||
break;
|
||||
if (__put_user(tmp, dst))
|
||||
break;
|
||||
dst++;
|
||||
src++;
|
||||
size--;
|
||||
}
|
||||
start = (unsigned long) from;
|
||||
end = start + size;
|
||||
if (fault_addr >= start && fault_addr < end)
|
||||
return end - fault_addr;
|
||||
|
||||
return size;
|
||||
}
|
||||
|
||||
@ -5,6 +5,6 @@
|
||||
EXTRA_AFLAGS := -ansi
|
||||
EXTRA_CFLAGS := -Werror
|
||||
|
||||
obj-y := ultra.o tlb.o fault.o init.o generic.o extable.o
|
||||
obj-y := ultra.o tlb.o fault.o init.o generic.o
|
||||
|
||||
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
|
||||
|
||||
@ -1,80 +0,0 @@
|
||||
/*
|
||||
* linux/arch/sparc64/mm/extable.c
|
||||
*/
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/module.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
extern const struct exception_table_entry __start___ex_table[];
|
||||
extern const struct exception_table_entry __stop___ex_table[];
|
||||
|
||||
void sort_extable(struct exception_table_entry *start,
|
||||
struct exception_table_entry *finish)
|
||||
{
|
||||
}
|
||||
|
||||
/* Caller knows they are in a range if ret->fixup == 0 */
|
||||
const struct exception_table_entry *
|
||||
search_extable(const struct exception_table_entry *start,
|
||||
const struct exception_table_entry *last,
|
||||
unsigned long value)
|
||||
{
|
||||
const struct exception_table_entry *walk;
|
||||
|
||||
/* Single insn entries are encoded as:
|
||||
* word 1: insn address
|
||||
* word 2: fixup code address
|
||||
*
|
||||
* Range entries are encoded as:
|
||||
* word 1: first insn address
|
||||
* word 2: 0
|
||||
* word 3: last insn address + 4 bytes
|
||||
* word 4: fixup code address
|
||||
*
|
||||
* See asm/uaccess.h for more details.
|
||||
*/
|
||||
|
||||
/* 1. Try to find an exact match. */
|
||||
for (walk = start; walk <= last; walk++) {
|
||||
if (walk->fixup == 0) {
|
||||
/* A range entry, skip both parts. */
|
||||
walk++;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (walk->insn == value)
|
||||
return walk;
|
||||
}
|
||||
|
||||
/* 2. Try to find a range match. */
|
||||
for (walk = start; walk <= (last - 1); walk++) {
|
||||
if (walk->fixup)
|
||||
continue;
|
||||
|
||||
if (walk[0].insn <= value && walk[1].insn > value)
|
||||
return walk;
|
||||
|
||||
walk++;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Special extable search, which handles ranges. Returns fixup */
|
||||
unsigned long search_extables_range(unsigned long addr, unsigned long *g2)
|
||||
{
|
||||
const struct exception_table_entry *entry;
|
||||
|
||||
entry = search_exception_tables(addr);
|
||||
if (!entry)
|
||||
return 0;
|
||||
|
||||
/* Inside range? Fix g2 and return correct fixup */
|
||||
if (!entry->fixup) {
|
||||
*g2 = (addr - entry->insn) / 4;
|
||||
return (entry + 1)->fixup;
|
||||
}
|
||||
|
||||
return entry->fixup;
|
||||
}
|
||||
@ -32,8 +32,6 @@
|
||||
|
||||
#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0]))
|
||||
|
||||
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
|
||||
|
||||
/*
|
||||
* To debug kernel to catch accesses to certain virtual/physical addresses.
|
||||
* Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints.
|
||||
@ -71,53 +69,6 @@ void set_brkpt(unsigned long addr, unsigned char mask, int flags, int mode)
|
||||
: "memory");
|
||||
}
|
||||
|
||||
/* Nice, simple, prom library does all the sweating for us. ;) */
|
||||
unsigned long __init prom_probe_memory (void)
|
||||
{
|
||||
register struct linux_mlist_p1275 *mlist;
|
||||
register unsigned long bytes, base_paddr, tally;
|
||||
register int i;
|
||||
|
||||
i = 0;
|
||||
mlist = *prom_meminfo()->p1275_available;
|
||||
bytes = tally = mlist->num_bytes;
|
||||
base_paddr = mlist->start_adr;
|
||||
|
||||
sp_banks[0].base_addr = base_paddr;
|
||||
sp_banks[0].num_bytes = bytes;
|
||||
|
||||
while (mlist->theres_more != (void *) 0) {
|
||||
i++;
|
||||
mlist = mlist->theres_more;
|
||||
bytes = mlist->num_bytes;
|
||||
tally += bytes;
|
||||
if (i >= SPARC_PHYS_BANKS-1) {
|
||||
printk ("The machine has more banks than "
|
||||
"this kernel can support\n"
|
||||
"Increase the SPARC_PHYS_BANKS "
|
||||
"setting (currently %d)\n",
|
||||
SPARC_PHYS_BANKS);
|
||||
i = SPARC_PHYS_BANKS-1;
|
||||
break;
|
||||
}
|
||||
|
||||
sp_banks[i].base_addr = mlist->start_adr;
|
||||
sp_banks[i].num_bytes = mlist->num_bytes;
|
||||
}
|
||||
|
||||
i++;
|
||||
sp_banks[i].base_addr = 0xdeadbeefbeefdeadUL;
|
||||
sp_banks[i].num_bytes = 0;
|
||||
|
||||
/* Now mask all bank sizes on a page boundary, it is all we can
|
||||
* use anyways.
|
||||
*/
|
||||
for (i = 0; sp_banks[i].num_bytes != 0; i++)
|
||||
sp_banks[i].num_bytes &= PAGE_MASK;
|
||||
|
||||
return tally;
|
||||
}
|
||||
|
||||
static void __kprobes unhandled_fault(unsigned long address,
|
||||
struct task_struct *tsk,
|
||||
struct pt_regs *regs)
|
||||
@ -242,7 +193,6 @@ static unsigned int get_fault_insn(struct pt_regs *regs, unsigned int insn)
|
||||
static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
|
||||
unsigned int insn, unsigned long address)
|
||||
{
|
||||
unsigned long g2;
|
||||
unsigned char asi = ASI_P;
|
||||
|
||||
if ((!insn) && (regs->tstate & TSTATE_PRIV))
|
||||
@ -273,11 +223,9 @@ static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
|
||||
}
|
||||
}
|
||||
|
||||
g2 = regs->u_regs[UREG_G2];
|
||||
|
||||
/* Is this in ex_table? */
|
||||
if (regs->tstate & TSTATE_PRIV) {
|
||||
unsigned long fixup;
|
||||
const struct exception_table_entry *entry;
|
||||
|
||||
if (asi == ASI_P && (insn & 0xc0800000) == 0xc0800000) {
|
||||
if (insn & 0x2000)
|
||||
@ -288,10 +236,9 @@ static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
|
||||
|
||||
/* Look in asi.h: All _S asis have LS bit set */
|
||||
if ((asi & 0x1) &&
|
||||
(fixup = search_extables_range(regs->tpc, &g2))) {
|
||||
regs->tpc = fixup;
|
||||
(entry = search_exception_tables(regs->tpc))) {
|
||||
regs->tpc = entry->fixup;
|
||||
regs->tnpc = regs->tpc + 4;
|
||||
regs->u_regs[UREG_G2] = g2;
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
@ -461,7 +408,7 @@ good_area:
|
||||
}
|
||||
|
||||
up_read(&mm->mmap_sem);
|
||||
goto fault_done;
|
||||
return;
|
||||
|
||||
/*
|
||||
* Something tried to access memory that isn't in our memory map..
|
||||
@ -473,8 +420,7 @@ bad_area:
|
||||
|
||||
handle_kernel_fault:
|
||||
do_kernel_fault(regs, si_code, fault_code, insn, address);
|
||||
|
||||
goto fault_done;
|
||||
return;
|
||||
|
||||
/*
|
||||
* We ran out of memory, or some other thing happened to us that made
|
||||
@ -505,9 +451,4 @@ do_sigbus:
|
||||
/* Kernel mode? Handle exceptions or die */
|
||||
if (regs->tstate & TSTATE_PRIV)
|
||||
goto handle_kernel_fault;
|
||||
|
||||
fault_done:
|
||||
/* These values are no longer needed, clear them. */
|
||||
set_thread_fault_code(0);
|
||||
current_thread_info()->fault_address = 0;
|
||||
}
|
||||
|
||||
@ -21,6 +21,7 @@
|
||||
#include <linux/seq_file.h>
|
||||
#include <linux/kprobes.h>
|
||||
#include <linux/cache.h>
|
||||
#include <linux/sort.h>
|
||||
|
||||
#include <asm/head.h>
|
||||
#include <asm/system.h>
|
||||
@ -41,7 +42,72 @@
|
||||
|
||||
extern void device_scan(void);
|
||||
|
||||
struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
|
||||
#define MAX_BANKS 32
|
||||
|
||||
static struct linux_prom64_registers pavail[MAX_BANKS] __initdata;
|
||||
static struct linux_prom64_registers pavail_rescan[MAX_BANKS] __initdata;
|
||||
static int pavail_ents __initdata;
|
||||
static int pavail_rescan_ents __initdata;
|
||||
|
||||
static int cmp_p64(const void *a, const void *b)
|
||||
{
|
||||
const struct linux_prom64_registers *x = a, *y = b;
|
||||
|
||||
if (x->phys_addr > y->phys_addr)
|
||||
return 1;
|
||||
if (x->phys_addr < y->phys_addr)
|
||||
return -1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __init read_obp_memory(const char *property,
|
||||
struct linux_prom64_registers *regs,
|
||||
int *num_ents)
|
||||
{
|
||||
int node = prom_finddevice("/memory");
|
||||
int prop_size = prom_getproplen(node, property);
|
||||
int ents, ret, i;
|
||||
|
||||
ents = prop_size / sizeof(struct linux_prom64_registers);
|
||||
if (ents > MAX_BANKS) {
|
||||
prom_printf("The machine has more %s property entries than "
|
||||
"this kernel can support (%d).\n",
|
||||
property, MAX_BANKS);
|
||||
prom_halt();
|
||||
}
|
||||
|
||||
ret = prom_getproperty(node, property, (char *) regs, prop_size);
|
||||
if (ret == -1) {
|
||||
prom_printf("Couldn't get %s property from /memory.\n");
|
||||
prom_halt();
|
||||
}
|
||||
|
||||
*num_ents = ents;
|
||||
|
||||
/* Sanitize what we got from the firmware, by page aligning
|
||||
* everything.
|
||||
*/
|
||||
for (i = 0; i < ents; i++) {
|
||||
unsigned long base, size;
|
||||
|
||||
base = regs[i].phys_addr;
|
||||
size = regs[i].reg_size;
|
||||
|
||||
size &= PAGE_MASK;
|
||||
if (base & ~PAGE_MASK) {
|
||||
unsigned long new_base = PAGE_ALIGN(base);
|
||||
|
||||
size -= new_base - base;
|
||||
if ((long) size < 0L)
|
||||
size = 0UL;
|
||||
base = new_base;
|
||||
}
|
||||
regs[i].phys_addr = base;
|
||||
regs[i].reg_size = size;
|
||||
}
|
||||
sort(regs, ents, sizeof(struct linux_prom64_registers),
|
||||
cmp_p64, NULL);
|
||||
}
|
||||
|
||||
unsigned long *sparc64_valid_addr_bitmap __read_mostly;
|
||||
|
||||
@ -1206,14 +1272,14 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
||||
int i;
|
||||
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("bootmem_init: Scan sp_banks, ");
|
||||
prom_printf("bootmem_init: Scan pavail, ");
|
||||
#endif
|
||||
|
||||
bytes_avail = 0UL;
|
||||
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
|
||||
end_of_phys_memory = sp_banks[i].base_addr +
|
||||
sp_banks[i].num_bytes;
|
||||
bytes_avail += sp_banks[i].num_bytes;
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
end_of_phys_memory = pavail[i].phys_addr +
|
||||
pavail[i].reg_size;
|
||||
bytes_avail += pavail[i].reg_size;
|
||||
if (cmdline_memory_size) {
|
||||
if (bytes_avail > cmdline_memory_size) {
|
||||
unsigned long slack = bytes_avail - cmdline_memory_size;
|
||||
@ -1221,12 +1287,15 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
||||
bytes_avail -= slack;
|
||||
end_of_phys_memory -= slack;
|
||||
|
||||
sp_banks[i].num_bytes -= slack;
|
||||
if (sp_banks[i].num_bytes == 0) {
|
||||
sp_banks[i].base_addr = 0xdeadbeef;
|
||||
pavail[i].reg_size -= slack;
|
||||
if ((long)pavail[i].reg_size <= 0L) {
|
||||
pavail[i].phys_addr = 0xdeadbeefUL;
|
||||
pavail[i].reg_size = 0UL;
|
||||
pavail_ents = i;
|
||||
} else {
|
||||
sp_banks[i+1].num_bytes = 0;
|
||||
sp_banks[i+1].base_addr = 0xdeadbeef;
|
||||
pavail[i+1].reg_size = 0Ul;
|
||||
pavail[i+1].phys_addr = 0xdeadbeefUL;
|
||||
pavail_ents = i + 1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -1280,12 +1349,12 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
|
||||
/* Now register the available physical memory with the
|
||||
* allocator.
|
||||
*/
|
||||
for (i = 0; sp_banks[i].num_bytes != 0; i++) {
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
#ifdef CONFIG_DEBUG_BOOTMEM
|
||||
prom_printf("free_bootmem(sp_banks:%d): base[%lx] size[%lx]\n",
|
||||
i, sp_banks[i].base_addr, sp_banks[i].num_bytes);
|
||||
prom_printf("free_bootmem(pavail:%d): base[%lx] size[%lx]\n",
|
||||
i, pavail[i].phys_addr, pavail[i].reg_size);
|
||||
#endif
|
||||
free_bootmem(sp_banks[i].base_addr, sp_banks[i].num_bytes);
|
||||
free_bootmem(pavail[i].phys_addr, pavail[i].reg_size);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_BLK_DEV_INITRD
|
||||
@ -1334,7 +1403,7 @@ static unsigned long kernel_map_range(unsigned long pstart, unsigned long pend,
|
||||
unsigned long alloc_bytes = 0UL;
|
||||
|
||||
if ((vstart & ~PAGE_MASK) || (vend & ~PAGE_MASK)) {
|
||||
prom_printf("kernel_map: Unaligned sp_banks[%lx:%lx]\n",
|
||||
prom_printf("kernel_map: Unaligned physmem[%lx:%lx]\n",
|
||||
vstart, vend);
|
||||
prom_halt();
|
||||
}
|
||||
@ -1381,23 +1450,24 @@ static unsigned long kernel_map_range(unsigned long pstart, unsigned long pend,
|
||||
return alloc_bytes;
|
||||
}
|
||||
|
||||
extern struct linux_mlist_p1275 *prom_ptot_ptr;
|
||||
static struct linux_prom64_registers pall[MAX_BANKS] __initdata;
|
||||
static int pall_ents __initdata;
|
||||
|
||||
extern unsigned int kvmap_linear_patch[1];
|
||||
|
||||
static void __init kernel_physical_mapping_init(void)
|
||||
{
|
||||
struct linux_mlist_p1275 *p = prom_ptot_ptr;
|
||||
unsigned long mem_alloced = 0UL;
|
||||
unsigned long i, mem_alloced = 0UL;
|
||||
|
||||
while (p) {
|
||||
read_obp_memory("reg", &pall[0], &pall_ents);
|
||||
|
||||
for (i = 0; i < pall_ents; i++) {
|
||||
unsigned long phys_start, phys_end;
|
||||
|
||||
phys_start = p->start_adr;
|
||||
phys_end = phys_start + p->num_bytes;
|
||||
phys_start = pall[i].phys_addr;
|
||||
phys_end = phys_start + pall[i].reg_size;
|
||||
mem_alloced += kernel_map_range(phys_start, phys_end,
|
||||
PAGE_KERNEL);
|
||||
|
||||
p = p->theres_more;
|
||||
}
|
||||
|
||||
printk("Allocated %ld bytes for kernel page tables.\n",
|
||||
@ -1425,6 +1495,18 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
|
||||
}
|
||||
#endif
|
||||
|
||||
unsigned long __init find_ecache_flush_span(unsigned long size)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
if (pavail[i].reg_size >= size)
|
||||
return pavail[i].phys_addr;
|
||||
}
|
||||
|
||||
return ~0UL;
|
||||
}
|
||||
|
||||
/* paging_init() sets up the page tables */
|
||||
|
||||
extern void cheetah_ecache_flush_init(void);
|
||||
@ -1435,7 +1517,19 @@ pgd_t swapper_pg_dir[2048];
|
||||
void __init paging_init(void)
|
||||
{
|
||||
unsigned long end_pfn, pages_avail, shift;
|
||||
unsigned long real_end;
|
||||
unsigned long real_end, i;
|
||||
|
||||
/* Find available physical memory... */
|
||||
read_obp_memory("available", &pavail[0], &pavail_ents);
|
||||
|
||||
phys_base = 0xffffffffffffffffUL;
|
||||
for (i = 0; i < pavail_ents; i++)
|
||||
phys_base = min(phys_base, pavail[i].phys_addr);
|
||||
|
||||
pfn_base = phys_base >> PAGE_SHIFT;
|
||||
|
||||
kern_base = (prom_boot_mapping_phys_low >> 22UL) << 22UL;
|
||||
kern_size = (unsigned long)&_end - (unsigned long)KERNBASE;
|
||||
|
||||
set_bit(0, mmu_context_bmap);
|
||||
|
||||
@ -1507,128 +1601,35 @@ void __init paging_init(void)
|
||||
device_scan();
|
||||
}
|
||||
|
||||
/* Ok, it seems that the prom can allocate some more memory chunks
|
||||
* as a side effect of some prom calls we perform during the
|
||||
* boot sequence. My most likely theory is that it is from the
|
||||
* prom_set_traptable() call, and OBP is allocating a scratchpad
|
||||
* for saving client program register state etc.
|
||||
*/
|
||||
static void __init sort_memlist(struct linux_mlist_p1275 *thislist)
|
||||
{
|
||||
int swapi = 0;
|
||||
int i, mitr;
|
||||
unsigned long tmpaddr, tmpsize;
|
||||
unsigned long lowest;
|
||||
|
||||
for (i = 0; thislist[i].theres_more != 0; i++) {
|
||||
lowest = thislist[i].start_adr;
|
||||
for (mitr = i+1; thislist[mitr-1].theres_more != 0; mitr++)
|
||||
if (thislist[mitr].start_adr < lowest) {
|
||||
lowest = thislist[mitr].start_adr;
|
||||
swapi = mitr;
|
||||
}
|
||||
if (lowest == thislist[i].start_adr)
|
||||
continue;
|
||||
tmpaddr = thislist[swapi].start_adr;
|
||||
tmpsize = thislist[swapi].num_bytes;
|
||||
for (mitr = swapi; mitr > i; mitr--) {
|
||||
thislist[mitr].start_adr = thislist[mitr-1].start_adr;
|
||||
thislist[mitr].num_bytes = thislist[mitr-1].num_bytes;
|
||||
}
|
||||
thislist[i].start_adr = tmpaddr;
|
||||
thislist[i].num_bytes = tmpsize;
|
||||
}
|
||||
}
|
||||
|
||||
void __init rescan_sp_banks(void)
|
||||
{
|
||||
struct linux_prom64_registers memlist[64];
|
||||
struct linux_mlist_p1275 avail[64], *mlist;
|
||||
unsigned long bytes, base_paddr;
|
||||
int num_regs, node = prom_finddevice("/memory");
|
||||
int i;
|
||||
|
||||
num_regs = prom_getproperty(node, "available",
|
||||
(char *) memlist, sizeof(memlist));
|
||||
num_regs = (num_regs / sizeof(struct linux_prom64_registers));
|
||||
for (i = 0; i < num_regs; i++) {
|
||||
avail[i].start_adr = memlist[i].phys_addr;
|
||||
avail[i].num_bytes = memlist[i].reg_size;
|
||||
avail[i].theres_more = &avail[i + 1];
|
||||
}
|
||||
avail[i - 1].theres_more = NULL;
|
||||
sort_memlist(avail);
|
||||
|
||||
mlist = &avail[0];
|
||||
i = 0;
|
||||
bytes = mlist->num_bytes;
|
||||
base_paddr = mlist->start_adr;
|
||||
|
||||
sp_banks[0].base_addr = base_paddr;
|
||||
sp_banks[0].num_bytes = bytes;
|
||||
|
||||
while (mlist->theres_more != NULL){
|
||||
i++;
|
||||
mlist = mlist->theres_more;
|
||||
bytes = mlist->num_bytes;
|
||||
if (i >= SPARC_PHYS_BANKS-1) {
|
||||
printk ("The machine has more banks than "
|
||||
"this kernel can support\n"
|
||||
"Increase the SPARC_PHYS_BANKS "
|
||||
"setting (currently %d)\n",
|
||||
SPARC_PHYS_BANKS);
|
||||
i = SPARC_PHYS_BANKS-1;
|
||||
break;
|
||||
}
|
||||
|
||||
sp_banks[i].base_addr = mlist->start_adr;
|
||||
sp_banks[i].num_bytes = mlist->num_bytes;
|
||||
}
|
||||
|
||||
i++;
|
||||
sp_banks[i].base_addr = 0xdeadbeefbeefdeadUL;
|
||||
sp_banks[i].num_bytes = 0;
|
||||
|
||||
for (i = 0; sp_banks[i].num_bytes != 0; i++)
|
||||
sp_banks[i].num_bytes &= PAGE_MASK;
|
||||
}
|
||||
|
||||
static void __init taint_real_pages(void)
|
||||
{
|
||||
struct sparc_phys_banks saved_sp_banks[SPARC_PHYS_BANKS];
|
||||
int i;
|
||||
|
||||
for (i = 0; i < SPARC_PHYS_BANKS; i++) {
|
||||
saved_sp_banks[i].base_addr =
|
||||
sp_banks[i].base_addr;
|
||||
saved_sp_banks[i].num_bytes =
|
||||
sp_banks[i].num_bytes;
|
||||
}
|
||||
read_obp_memory("available", &pavail_rescan[0], &pavail_rescan_ents);
|
||||
|
||||
rescan_sp_banks();
|
||||
|
||||
/* Find changes discovered in the sp_bank rescan and
|
||||
/* Find changes discovered in the physmem available rescan and
|
||||
* reserve the lost portions in the bootmem maps.
|
||||
*/
|
||||
for (i = 0; saved_sp_banks[i].num_bytes; i++) {
|
||||
for (i = 0; i < pavail_ents; i++) {
|
||||
unsigned long old_start, old_end;
|
||||
|
||||
old_start = saved_sp_banks[i].base_addr;
|
||||
old_start = pavail[i].phys_addr;
|
||||
old_end = old_start +
|
||||
saved_sp_banks[i].num_bytes;
|
||||
pavail[i].reg_size;
|
||||
while (old_start < old_end) {
|
||||
int n;
|
||||
|
||||
for (n = 0; sp_banks[n].num_bytes; n++) {
|
||||
for (n = 0; pavail_rescan_ents; n++) {
|
||||
unsigned long new_start, new_end;
|
||||
|
||||
new_start = sp_banks[n].base_addr;
|
||||
new_end = new_start + sp_banks[n].num_bytes;
|
||||
new_start = pavail_rescan[n].phys_addr;
|
||||
new_end = new_start +
|
||||
pavail_rescan[n].reg_size;
|
||||
|
||||
if (new_start <= old_start &&
|
||||
new_end >= (old_start + PAGE_SIZE)) {
|
||||
set_bit (old_start >> 22,
|
||||
sparc64_valid_addr_bitmap);
|
||||
set_bit(old_start >> 22,
|
||||
sparc64_valid_addr_bitmap);
|
||||
goto do_next_page;
|
||||
}
|
||||
}
|
||||
|
||||
@ -6,5 +6,5 @@
|
||||
EXTRA_AFLAGS := -ansi
|
||||
EXTRA_CFLAGS := -Werror
|
||||
|
||||
lib-y := bootstr.o devops.o init.o memory.o misc.o \
|
||||
lib-y := bootstr.o devops.o init.o misc.o \
|
||||
tree.o console.o printf.o p1275.o cif.o
|
||||
|
||||
@ -27,7 +27,6 @@ int prom_chosen_node;
|
||||
* failure. It gets passed the pointer to the PROM vector.
|
||||
*/
|
||||
|
||||
extern void prom_meminit(void);
|
||||
extern void prom_cif_init(void *, void *);
|
||||
|
||||
void __init prom_init(void *cif_handler, void *cif_stack)
|
||||
@ -90,8 +89,6 @@ void __init prom_init(void *cif_handler, void *cif_stack)
|
||||
|
||||
printk ("PROMLIB: Sun IEEE Boot Prom %s\n", buffer + bufadjust);
|
||||
|
||||
prom_meminit();
|
||||
|
||||
/* Initialization successful. */
|
||||
return;
|
||||
|
||||
|
||||
@ -1,152 +0,0 @@
|
||||
/* $Id: memory.c,v 1.5 1999/08/31 06:55:04 davem Exp $
|
||||
* memory.c: Prom routine for acquiring various bits of information
|
||||
* about RAM on the machine, both virtual and physical.
|
||||
*
|
||||
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
||||
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
#include <asm/openprom.h>
|
||||
#include <asm/oplib.h>
|
||||
|
||||
/* This routine, for consistency, returns the ram parameters in the
|
||||
* V0 prom memory descriptor format. I choose this format because I
|
||||
* think it was the easiest to work with. I feel the religious
|
||||
* arguments now... ;) Also, I return the linked lists sorted to
|
||||
* prevent paging_init() upset stomach as I have not yet written
|
||||
* the pepto-bismol kernel module yet.
|
||||
*/
|
||||
|
||||
struct linux_prom64_registers prom_reg_memlist[64];
|
||||
struct linux_prom64_registers prom_reg_tmp[64];
|
||||
|
||||
struct linux_mlist_p1275 prom_phys_total[64];
|
||||
struct linux_mlist_p1275 prom_prom_taken[64];
|
||||
struct linux_mlist_p1275 prom_phys_avail[64];
|
||||
|
||||
struct linux_mlist_p1275 *prom_ptot_ptr = prom_phys_total;
|
||||
struct linux_mlist_p1275 *prom_ptak_ptr = prom_prom_taken;
|
||||
struct linux_mlist_p1275 *prom_pavl_ptr = prom_phys_avail;
|
||||
|
||||
struct linux_mem_p1275 prom_memlist;
|
||||
|
||||
|
||||
/* Internal Prom library routine to sort a linux_mlist_p1275 memory
|
||||
* list. Used below in initialization.
|
||||
*/
|
||||
static void __init
|
||||
prom_sortmemlist(struct linux_mlist_p1275 *thislist)
|
||||
{
|
||||
int swapi = 0;
|
||||
int i, mitr;
|
||||
unsigned long tmpaddr, tmpsize;
|
||||
unsigned long lowest;
|
||||
|
||||
for(i=0; thislist[i].theres_more; i++) {
|
||||
lowest = thislist[i].start_adr;
|
||||
for(mitr = i+1; thislist[mitr-1].theres_more; mitr++)
|
||||
if(thislist[mitr].start_adr < lowest) {
|
||||
lowest = thislist[mitr].start_adr;
|
||||
swapi = mitr;
|
||||
}
|
||||
if(lowest == thislist[i].start_adr) continue;
|
||||
tmpaddr = thislist[swapi].start_adr;
|
||||
tmpsize = thislist[swapi].num_bytes;
|
||||
for(mitr = swapi; mitr > i; mitr--) {
|
||||
thislist[mitr].start_adr = thislist[mitr-1].start_adr;
|
||||
thislist[mitr].num_bytes = thislist[mitr-1].num_bytes;
|
||||
}
|
||||
thislist[i].start_adr = tmpaddr;
|
||||
thislist[i].num_bytes = tmpsize;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize the memory lists based upon the prom version. */
|
||||
void __init prom_meminit(void)
|
||||
{
|
||||
int node = 0;
|
||||
unsigned int iter, num_regs;
|
||||
|
||||
node = prom_finddevice("/memory");
|
||||
num_regs = prom_getproperty(node, "available",
|
||||
(char *) prom_reg_memlist,
|
||||
sizeof(prom_reg_memlist));
|
||||
num_regs = (num_regs/sizeof(struct linux_prom64_registers));
|
||||
for(iter=0; iter<num_regs; iter++) {
|
||||
prom_phys_avail[iter].start_adr =
|
||||
prom_reg_memlist[iter].phys_addr;
|
||||
prom_phys_avail[iter].num_bytes =
|
||||
prom_reg_memlist[iter].reg_size;
|
||||
prom_phys_avail[iter].theres_more =
|
||||
&prom_phys_avail[iter+1];
|
||||
}
|
||||
prom_phys_avail[iter-1].theres_more = NULL;
|
||||
|
||||
num_regs = prom_getproperty(node, "reg",
|
||||
(char *) prom_reg_memlist,
|
||||
sizeof(prom_reg_memlist));
|
||||
num_regs = (num_regs/sizeof(struct linux_prom64_registers));
|
||||
for(iter=0; iter<num_regs; iter++) {
|
||||
prom_phys_total[iter].start_adr =
|
||||
prom_reg_memlist[iter].phys_addr;
|
||||
prom_phys_total[iter].num_bytes =
|
||||
prom_reg_memlist[iter].reg_size;
|
||||
prom_phys_total[iter].theres_more =
|
||||
&prom_phys_total[iter+1];
|
||||
}
|
||||
prom_phys_total[iter-1].theres_more = NULL;
|
||||
|
||||
node = prom_finddevice("/virtual-memory");
|
||||
num_regs = prom_getproperty(node, "available",
|
||||
(char *) prom_reg_memlist,
|
||||
sizeof(prom_reg_memlist));
|
||||
num_regs = (num_regs/sizeof(struct linux_prom64_registers));
|
||||
|
||||
/* Convert available virtual areas to taken virtual
|
||||
* areas. First sort, then convert.
|
||||
*/
|
||||
for(iter=0; iter<num_regs; iter++) {
|
||||
prom_prom_taken[iter].start_adr =
|
||||
prom_reg_memlist[iter].phys_addr;
|
||||
prom_prom_taken[iter].num_bytes =
|
||||
prom_reg_memlist[iter].reg_size;
|
||||
prom_prom_taken[iter].theres_more =
|
||||
&prom_prom_taken[iter+1];
|
||||
}
|
||||
prom_prom_taken[iter-1].theres_more = NULL;
|
||||
|
||||
prom_sortmemlist(prom_prom_taken);
|
||||
|
||||
/* Finally, convert. */
|
||||
for(iter=0; iter<num_regs; iter++) {
|
||||
prom_prom_taken[iter].start_adr =
|
||||
prom_prom_taken[iter].start_adr +
|
||||
prom_prom_taken[iter].num_bytes;
|
||||
prom_prom_taken[iter].num_bytes =
|
||||
prom_prom_taken[iter+1].start_adr -
|
||||
prom_prom_taken[iter].start_adr;
|
||||
}
|
||||
prom_prom_taken[iter-1].num_bytes =
|
||||
-1UL - prom_prom_taken[iter-1].start_adr;
|
||||
|
||||
/* Sort the other two lists. */
|
||||
prom_sortmemlist(prom_phys_total);
|
||||
prom_sortmemlist(prom_phys_avail);
|
||||
|
||||
/* Link all the lists into the top-level descriptor. */
|
||||
prom_memlist.p1275_totphys=&prom_ptot_ptr;
|
||||
prom_memlist.p1275_prommap=&prom_ptak_ptr;
|
||||
prom_memlist.p1275_available=&prom_pavl_ptr;
|
||||
}
|
||||
|
||||
/* This returns a pointer to our libraries internal p1275 format
|
||||
* memory descriptor.
|
||||
*/
|
||||
struct linux_mem_p1275 *
|
||||
prom_meminfo(void)
|
||||
{
|
||||
return &prom_memlist;
|
||||
}
|
||||
@ -475,7 +475,7 @@ static int __devinit radeon_probe_pll_params(struct radeonfb_info *rinfo)
|
||||
*/
|
||||
|
||||
/* Flush PCI buffers ? */
|
||||
tmp = INREG(DEVICE_ID);
|
||||
tmp = INREG16(DEVICE_ID);
|
||||
|
||||
local_irq_disable();
|
||||
|
||||
|
||||
@ -395,6 +395,8 @@ static inline void _radeon_msleep(struct radeonfb_info *rinfo, unsigned long ms)
|
||||
|
||||
#define INREG8(addr) readb((rinfo->mmio_base)+addr)
|
||||
#define OUTREG8(addr,val) writeb(val, (rinfo->mmio_base)+addr)
|
||||
#define INREG16(addr) readw((rinfo->mmio_base)+addr)
|
||||
#define OUTREG16(addr,val) writew(val, (rinfo->mmio_base)+addr)
|
||||
#define INREG(addr) readl((rinfo->mmio_base)+addr)
|
||||
#define OUTREG(addr,val) writel(val, (rinfo->mmio_base)+addr)
|
||||
|
||||
|
||||
@ -82,6 +82,8 @@ extern unsigned long page_kernel;
|
||||
/* Top-level page directory */
|
||||
extern pgd_t swapper_pg_dir[1024];
|
||||
|
||||
extern void paging_init(void);
|
||||
|
||||
/* Page table for 0-4MB for everybody, on the Sparc this
|
||||
* holds the same as on the i386.
|
||||
*/
|
||||
|
||||
@ -186,8 +186,8 @@ struct linux_prom_registers {
|
||||
};
|
||||
|
||||
struct linux_prom64_registers {
|
||||
long phys_addr;
|
||||
long reg_size;
|
||||
unsigned long phys_addr;
|
||||
unsigned long reg_size;
|
||||
};
|
||||
|
||||
struct linux_prom_irqs {
|
||||
|
||||
@ -95,20 +95,6 @@ extern int prom_devclose(int device_handle);
|
||||
extern void prom_seek(int device_handle, unsigned int seek_hival,
|
||||
unsigned int seek_lowval);
|
||||
|
||||
/* Machine memory configuration routine. */
|
||||
|
||||
/* This function returns a V0 format memory descriptor table, it has three
|
||||
* entries. One for the total amount of physical ram on the machine, one
|
||||
* for the amount of physical ram available, and one describing the virtual
|
||||
* areas which are allocated by the prom. So, in a sense the physical
|
||||
* available is a calculation of the total physical minus the physical mapped
|
||||
* by the prom with virtual mappings.
|
||||
*
|
||||
* These lists are returned pre-sorted, this should make your life easier
|
||||
* since the prom itself is way too lazy to do such nice things.
|
||||
*/
|
||||
extern struct linux_mem_p1275 *prom_meminfo(void);
|
||||
|
||||
/* Miscellaneous routines, don't really fit in any category per se. */
|
||||
|
||||
/* Reboot the machine with the command line passed. */
|
||||
|
||||
@ -140,23 +140,6 @@ extern unsigned long page_to_pfn(struct page *);
|
||||
#define virt_to_phys __pa
|
||||
#define phys_to_virt __va
|
||||
|
||||
/* The following structure is used to hold the physical
|
||||
* memory configuration of the machine. This is filled in
|
||||
* probe_memory() and is later used by mem_init() to set up
|
||||
* mem_map[]. We statically allocate SPARC_PHYS_BANKS of
|
||||
* these structs, this is arbitrary. The entry after the
|
||||
* last valid one has num_bytes==0.
|
||||
*/
|
||||
|
||||
struct sparc_phys_banks {
|
||||
unsigned long base_addr;
|
||||
unsigned long num_bytes;
|
||||
};
|
||||
|
||||
#define SPARC_PHYS_BANKS 32
|
||||
|
||||
extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
|
||||
|
||||
#endif /* !(__ASSEMBLY__) */
|
||||
|
||||
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
||||
|
||||
@ -341,6 +341,9 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *p
|
||||
extern pgd_t swapper_pg_dir[2048];
|
||||
extern pmd_t swapper_low_pmd_dir[2048];
|
||||
|
||||
extern void paging_init(void);
|
||||
extern unsigned long find_ecache_flush_span(unsigned long size);
|
||||
|
||||
/* These do nothing with the way I have things setup. */
|
||||
#define mmu_lockarea(vaddr, len) (vaddr)
|
||||
#define mmu_unlockarea(vaddr, len) do { } while(0)
|
||||
|
||||
@ -70,26 +70,14 @@ static inline int access_ok(int type, const void __user * addr, unsigned long si
|
||||
* with the main instruction path. This means when everything is well,
|
||||
* we don't even have to jump over them. Further, they do not intrude
|
||||
* on our cache or tlb entries.
|
||||
*
|
||||
* There is a special way how to put a range of potentially faulting
|
||||
* insns (like twenty ldd/std's with now intervening other instructions)
|
||||
* You specify address of first in insn and 0 in fixup and in the next
|
||||
* exception_table_entry you specify last potentially faulting insn + 1
|
||||
* and in fixup the routine which should handle the fault.
|
||||
* That fixup code will get
|
||||
* (faulting_insn_address - first_insn_in_the_range_address)/4
|
||||
* in %g2 (ie. index of the faulting instruction in the range).
|
||||
*/
|
||||
|
||||
struct exception_table_entry
|
||||
{
|
||||
unsigned insn, fixup;
|
||||
struct exception_table_entry {
|
||||
unsigned int insn, fixup;
|
||||
};
|
||||
|
||||
/* Special exable search, which handles ranges. Returns fixup */
|
||||
unsigned long search_extables_range(unsigned long addr, unsigned long *g2);
|
||||
|
||||
extern void __ret_efault(void);
|
||||
extern void __retl_efault(void);
|
||||
|
||||
/* Uh, these should become the main single-value transfer routines..
|
||||
* They automatically use the right size if we just have the right
|
||||
@ -263,7 +251,7 @@ copy_from_user(void *to, const void __user *from, unsigned long size)
|
||||
{
|
||||
unsigned long ret = ___copy_from_user(to, from, size);
|
||||
|
||||
if (ret)
|
||||
if (unlikely(ret))
|
||||
ret = copy_from_user_fixup(to, from, size);
|
||||
return ret;
|
||||
}
|
||||
@ -279,7 +267,7 @@ copy_to_user(void __user *to, const void *from, unsigned long size)
|
||||
{
|
||||
unsigned long ret = ___copy_to_user(to, from, size);
|
||||
|
||||
if (ret)
|
||||
if (unlikely(ret))
|
||||
ret = copy_to_user_fixup(to, from, size);
|
||||
return ret;
|
||||
}
|
||||
@ -295,7 +283,7 @@ copy_in_user(void __user *to, void __user *from, unsigned long size)
|
||||
{
|
||||
unsigned long ret = ___copy_in_user(to, from, size);
|
||||
|
||||
if (ret)
|
||||
if (unlikely(ret))
|
||||
ret = copy_in_user_fixup(to, from, size);
|
||||
return ret;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user