117 lines
3.3 KiB
C
117 lines
3.3 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.
|
|
*
|
|
* SGI UV Core Functions
|
|
*
|
|
* Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/percpu.h>
|
|
#include <asm/sn/simulator.h>
|
|
#include <asm/uv/uv_mmrs.h>
|
|
#include <asm/uv/uv_hub.h>
|
|
|
|
DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
|
|
EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
|
|
|
|
#ifdef CONFIG_IA64_SGI_UV
|
|
int sn_prom_type;
|
|
long sn_partition_id;
|
|
EXPORT_SYMBOL(sn_partition_id);
|
|
long sn_coherency_id;
|
|
EXPORT_SYMBOL_GPL(sn_coherency_id);
|
|
long sn_region_size;
|
|
EXPORT_SYMBOL(sn_region_size);
|
|
#endif
|
|
|
|
struct redir_addr {
|
|
unsigned long redirect;
|
|
unsigned long alias;
|
|
};
|
|
|
|
#define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
|
|
|
|
static __initdata struct redir_addr redir_addrs[] = {
|
|
{UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
|
|
{UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
|
|
{UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
|
|
};
|
|
|
|
static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
|
|
{
|
|
union uvh_si_alias0_overlay_config_u alias;
|
|
union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
|
|
alias.v = uv_read_local_mmr(redir_addrs[i].alias);
|
|
if (alias.s.base == 0) {
|
|
*size = (1UL << alias.s.m_alias);
|
|
redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
|
|
*base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
|
|
return;
|
|
}
|
|
}
|
|
BUG();
|
|
}
|
|
|
|
void __init uv_setup(char **cmdline_p)
|
|
{
|
|
union uvh_si_addr_map_config_u m_n_config;
|
|
union uvh_node_id_u node_id;
|
|
unsigned long gnode_upper;
|
|
int nid, cpu, m_val, n_val;
|
|
unsigned long mmr_base, lowmem_redir_base, lowmem_redir_size;
|
|
|
|
if (IS_MEDUSA()) {
|
|
lowmem_redir_base = 0;
|
|
lowmem_redir_size = 0;
|
|
node_id.v = 0;
|
|
m_n_config.s.m_skt = 37;
|
|
m_n_config.s.n_skt = 0;
|
|
mmr_base = 0;
|
|
#if 0
|
|
/* Need BIOS calls - TDB */
|
|
if (!ia64_sn_is_fake_prom())
|
|
sn_prom_type = 1;
|
|
else
|
|
#endif
|
|
sn_prom_type = 2;
|
|
printk(KERN_INFO "Running on medusa with %s PROM\n",
|
|
(sn_prom_type == 1) ? "real" : "fake");
|
|
} else {
|
|
get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
|
|
node_id.v = uv_read_local_mmr(UVH_NODE_ID);
|
|
m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
|
|
mmr_base =
|
|
uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
|
|
~UV_MMR_ENABLE;
|
|
}
|
|
|
|
m_val = m_n_config.s.m_skt;
|
|
n_val = m_n_config.s.n_skt;
|
|
printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
|
|
|
|
gnode_upper = (((unsigned long)node_id.s.node_id) &
|
|
~((1 << n_val) - 1)) << m_val;
|
|
|
|
for_each_present_cpu(cpu) {
|
|
nid = cpu_to_node(cpu);
|
|
uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
|
|
uv_cpu_hub_info(cpu)->lowmem_remap_top =
|
|
lowmem_redir_base + lowmem_redir_size;
|
|
uv_cpu_hub_info(cpu)->m_val = m_val;
|
|
uv_cpu_hub_info(cpu)->n_val = m_val;
|
|
uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) -1;
|
|
uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
|
|
uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
|
|
uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
|
|
uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
|
|
printk(KERN_DEBUG "UV cpu %d, nid %d\n", cpu, nid);
|
|
}
|
|
}
|
|
|