172 lines
3.9 KiB
C
172 lines
3.9 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
|
|
*/
|
|
|
|
/*
|
|
* Cross Partition (XP) uv-based functions.
|
|
*
|
|
* Architecture specific implementation of common functions.
|
|
*
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <asm/uv/uv_hub.h>
|
|
#if defined CONFIG_X86_64
|
|
#include <asm/uv/bios.h>
|
|
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
|
#include <asm/sn/sn_sal.h>
|
|
#endif
|
|
#include "../sgi-gru/grukservices.h"
|
|
#include "xp.h"
|
|
|
|
/*
|
|
* Convert a virtual memory address to a physical memory address.
|
|
*/
|
|
static unsigned long
|
|
xp_pa_uv(void *addr)
|
|
{
|
|
return uv_gpa(addr);
|
|
}
|
|
|
|
/*
|
|
* Convert a global physical to socket physical address.
|
|
*/
|
|
static unsigned long
|
|
xp_socket_pa_uv(unsigned long gpa)
|
|
{
|
|
return uv_gpa_to_soc_phys_ram(gpa);
|
|
}
|
|
|
|
static enum xp_retval
|
|
xp_remote_mmr_read(unsigned long dst_gpa, const unsigned long src_gpa,
|
|
size_t len)
|
|
{
|
|
int ret;
|
|
unsigned long *dst_va = __va(uv_gpa_to_soc_phys_ram(dst_gpa));
|
|
|
|
BUG_ON(!uv_gpa_in_mmr_space(src_gpa));
|
|
BUG_ON(len != 8);
|
|
|
|
ret = gru_read_gpa(dst_va, src_gpa);
|
|
if (ret == 0)
|
|
return xpSuccess;
|
|
|
|
dev_err(xp, "gru_read_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx "
|
|
"len=%ld\n", dst_gpa, src_gpa, len);
|
|
return xpGruCopyError;
|
|
}
|
|
|
|
|
|
static enum xp_retval
|
|
xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa,
|
|
size_t len)
|
|
{
|
|
int ret;
|
|
|
|
if (uv_gpa_in_mmr_space(src_gpa))
|
|
return xp_remote_mmr_read(dst_gpa, src_gpa, len);
|
|
|
|
ret = gru_copy_gpa(dst_gpa, src_gpa, len);
|
|
if (ret == 0)
|
|
return xpSuccess;
|
|
|
|
dev_err(xp, "gru_copy_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx "
|
|
"len=%ld\n", dst_gpa, src_gpa, len);
|
|
return xpGruCopyError;
|
|
}
|
|
|
|
static int
|
|
xp_cpu_to_nasid_uv(int cpuid)
|
|
{
|
|
/* ??? Is this same as sn2 nasid in mach/part bitmaps set up by SAL? */
|
|
return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid));
|
|
}
|
|
|
|
static enum xp_retval
|
|
xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size)
|
|
{
|
|
int ret;
|
|
|
|
#if defined CONFIG_X86_64
|
|
ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW);
|
|
if (ret != BIOS_STATUS_SUCCESS) {
|
|
dev_err(xp, "uv_bios_change_memprotect(,, "
|
|
"UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret);
|
|
return xpBiosError;
|
|
}
|
|
|
|
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
|
u64 nasid_array;
|
|
|
|
ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
|
|
&nasid_array);
|
|
if (ret != 0) {
|
|
dev_err(xp, "sn_change_memprotect(,, "
|
|
"SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
|
|
return xpSalError;
|
|
}
|
|
#else
|
|
#error not a supported configuration
|
|
#endif
|
|
return xpSuccess;
|
|
}
|
|
|
|
static enum xp_retval
|
|
xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size)
|
|
{
|
|
int ret;
|
|
|
|
#if defined CONFIG_X86_64
|
|
ret = uv_bios_change_memprotect(phys_addr, size,
|
|
UV_MEMPROT_RESTRICT_ACCESS);
|
|
if (ret != BIOS_STATUS_SUCCESS) {
|
|
dev_err(xp, "uv_bios_change_memprotect(,, "
|
|
"UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret);
|
|
return xpBiosError;
|
|
}
|
|
|
|
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
|
u64 nasid_array;
|
|
|
|
ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
|
|
&nasid_array);
|
|
if (ret != 0) {
|
|
dev_err(xp, "sn_change_memprotect(,, "
|
|
"SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
|
|
return xpSalError;
|
|
}
|
|
#else
|
|
#error not a supported configuration
|
|
#endif
|
|
return xpSuccess;
|
|
}
|
|
|
|
enum xp_retval
|
|
xp_init_uv(void)
|
|
{
|
|
BUG_ON(!is_uv());
|
|
|
|
xp_max_npartitions = XP_MAX_NPARTITIONS_UV;
|
|
xp_partition_id = sn_partition_id;
|
|
xp_region_size = sn_region_size;
|
|
|
|
xp_pa = xp_pa_uv;
|
|
xp_socket_pa = xp_socket_pa_uv;
|
|
xp_remote_memcpy = xp_remote_memcpy_uv;
|
|
xp_cpu_to_nasid = xp_cpu_to_nasid_uv;
|
|
xp_expand_memprotect = xp_expand_memprotect_uv;
|
|
xp_restrict_memprotect = xp_restrict_memprotect_uv;
|
|
|
|
return xpSuccess;
|
|
}
|
|
|
|
void
|
|
xp_exit_uv(void)
|
|
{
|
|
BUG_ON(!is_uv());
|
|
}
|