[PATCH 2/2] - Map UV chipset space - UV support

From: Jack Steiner
Date: Tue Jul 01 2008 - 15:46:01 EST

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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@xxxxxxx>

---
arch/x86/kernel/genx2apic_uv_x.c | 75 ++++++++++++++++++++++++++++++++++++++-
include/asm-x86/uv/uv_hub.h | 2 +
include/asm-x86/uv/uv_mmrs.h | 46 +++++++++++++++++++++++
3 files changed, 122 insertions(+), 1 deletion(-)

Index: linux/arch/x86/kernel/genx2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/genx2apic_uv_x.c 2008-07-01 14:36:00.000000000 -0500
+++ linux/arch/x86/kernel/genx2apic_uv_x.c 2008-07-01 14:39:50.000000000 -0500
@@ -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>
@@ -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>

@@ -213,14 +215,79 @@ static __init void get_lowmem_redirect(u
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;
@@ -286,12 +353,18 @@ 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);
}

/*
Index: linux/include/asm-x86/uv/uv_mmrs.h
===================================================================
--- linux.orig/include/asm-x86/uv/uv_mmrs.h 2008-07-01 14:36:00.000000000 -0500
+++ linux/include/asm-x86/uv/uv_mmrs.h 2008-07-01 14:39:11.000000000 -0500
@@ -713,6 +713,26 @@ union uvh_rh_gam_alias210_redirect_confi
};

/* ========================================================================= */
+/* 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 */
/* ========================================================================= */
#define UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR 0x1600010UL
@@ -740,6 +760,32 @@ union uvh_rh_gam_gru_overlay_config_mmr_
};

/* ========================================================================= */
+/* 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 */
/* ========================================================================= */
#define UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR 0x1600028UL
Index: linux/include/asm-x86/uv/uv_hub.h
===================================================================
--- linux.orig/include/asm-x86/uv/uv_hub.h 2008-07-01 14:36:00.000000000 -0500
+++ linux/include/asm-x86/uv/uv_hub.h 2008-07-01 14:39:11.000000000 -0500
@@ -149,6 +149,8 @@ DECLARE_PER_CPU(struct uv_hub_info_s, __
#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
--
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Next message: Paul E. McKenney: "Re: [PATCH] fix rcu vs hotplug race"
Previous message: Jack Steiner: "[PATCH 1/2] - Map UV chipset space - pagetable"
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