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x86: map UV chipset space - UV support
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Create page table entries to map the SGI UV chipset GRU. local MMR &
global MMR ranges.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Jack Steiner authored and Ingo Molnar committed Jul 9, 2008
1 parent 3a9e189 commit 83f5d89
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Showing 3 changed files with 122 additions and 1 deletion.
75 changes: 74 additions & 1 deletion arch/x86/kernel/genx2apic_uv_x.c
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
* Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
*/

#include <linux/kernel.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/string.h>
Expand All @@ -20,6 +21,7 @@
#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
#include <asm/pgtable.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>

Expand Down Expand Up @@ -208,14 +210,79 @@ static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
BUG();
}

static __init void map_low_mmrs(void)
{
init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE);
init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE);
}

enum map_type {map_wb, map_uc};

static void map_high(char *id, unsigned long base, int shift, enum map_type map_type)
{
unsigned long bytes, paddr;

paddr = base << shift;
bytes = (1UL << shift);
printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
paddr + bytes);
if (map_type == map_uc)
init_extra_mapping_uc(paddr, bytes);
else
init_extra_mapping_wb(paddr, bytes);

}
static __init void map_gru_high(int max_pnode)
{
union uvh_rh_gam_gru_overlay_config_mmr_u gru;
int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT;

gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
if (gru.s.enable)
map_high("GRU", gru.s.base, shift, map_wb);
}

static __init void map_config_high(int max_pnode)
{
union uvh_rh_gam_cfg_overlay_config_mmr_u cfg;
int shift = UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT;

cfg.v = uv_read_local_mmr(UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR);
if (cfg.s.enable)
map_high("CONFIG", cfg.s.base, shift, map_uc);
}

static __init void map_mmr_high(int max_pnode)
{
union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;

mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
if (mmr.s.enable)
map_high("MMR", mmr.s.base, shift, map_uc);
}

static __init void map_mmioh_high(int max_pnode)
{
union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
int shift = UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT;

mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
if (mmioh.s.enable)
map_high("MMIOH", mmioh.s.base, shift, map_uc);
}

static __init void uv_system_init(void)
{
union uvh_si_addr_map_config_u m_n_config;
union uvh_node_id_u node_id;
unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
int max_pnode = 0;
unsigned long mmr_base, present;

map_low_mmrs();

m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
m_val = m_n_config.s.m_skt;
n_val = m_n_config.s.n_skt;
Expand Down Expand Up @@ -281,12 +348,18 @@ static __init void uv_system_init(void)
uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */
uv_node_to_blade[nid] = blade;
uv_cpu_to_blade[cpu] = blade;
max_pnode = max(pnode, max_pnode);

printk(KERN_DEBUG "UV cpu %d, apicid 0x%x, pnode %d, nid %d, "
printk(KERN_DEBUG "UV: cpu %d, apicid 0x%x, pnode %d, nid %d, "
"lcpu %d, blade %d\n",
cpu, per_cpu(x86_cpu_to_apicid, cpu), pnode, nid,
lcpu, blade);
}

map_gru_high(max_pnode);
map_mmr_high(max_pnode);
map_config_high(max_pnode);
map_mmioh_high(max_pnode);
}

/*
Expand Down
2 changes: 2 additions & 0 deletions include/asm-x86/uv/uv_hub.h
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,8 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
#define UV_LOCAL_MMR_BASE 0xf4000000UL
#define UV_GLOBAL_MMR32_BASE 0xf8000000UL
#define UV_GLOBAL_MMR64_BASE (uv_hub_info->global_mmr_base)
#define UV_LOCAL_MMR_SIZE (64UL * 1024 * 1024)
#define UV_GLOBAL_MMR32_SIZE (64UL * 1024 * 1024)

#define UV_GLOBAL_MMR32_PNODE_SHIFT 15
#define UV_GLOBAL_MMR64_PNODE_SHIFT 26
Expand Down
46 changes: 46 additions & 0 deletions include/asm-x86/uv/uv_mmrs.h
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Original file line number Diff line number Diff line change
Expand Up @@ -712,6 +712,26 @@ union uvh_rh_gam_alias210_redirect_config_2_mmr_u {
} s;
};

/* ========================================================================= */
/* UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR */
/* ========================================================================= */
#define UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR 0x1600020UL

#define UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT 26
#define UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_MASK 0x00003ffffc000000UL
#define UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_ENABLE_SHFT 63
#define UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_ENABLE_MASK 0x8000000000000000UL

union uvh_rh_gam_cfg_overlay_config_mmr_u {
unsigned long v;
struct uvh_rh_gam_cfg_overlay_config_mmr_s {
unsigned long rsvd_0_25: 26; /* */
unsigned long base : 20; /* RW */
unsigned long rsvd_46_62: 17; /* */
unsigned long enable : 1; /* RW */
} s;
};

/* ========================================================================= */
/* UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR */
/* ========================================================================= */
Expand Down Expand Up @@ -739,6 +759,32 @@ union uvh_rh_gam_gru_overlay_config_mmr_u {
} s;
};

/* ========================================================================= */
/* UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR */
/* ========================================================================= */
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR 0x1600030UL

#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT 30
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_MASK 0x00003fffc0000000UL
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_M_IO_SHFT 46
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_M_IO_MASK 0x000fc00000000000UL
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_N_IO_SHFT 52
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_N_IO_MASK 0x00f0000000000000UL
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_ENABLE_SHFT 63
#define UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_ENABLE_MASK 0x8000000000000000UL

union uvh_rh_gam_mmioh_overlay_config_mmr_u {
unsigned long v;
struct uvh_rh_gam_mmioh_overlay_config_mmr_s {
unsigned long rsvd_0_29: 30; /* */
unsigned long base : 16; /* RW */
unsigned long m_io : 6; /* RW */
unsigned long n_io : 4; /* RW */
unsigned long rsvd_56_62: 7; /* */
unsigned long enable : 1; /* RW */
} s;
};

/* ========================================================================= */
/* UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR */
/* ========================================================================= */
Expand Down

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