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x86/platform/UV: Support UV4 socket address changes

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With the UV4 system architecture addressing changes, BIOS now provides
this information via an EFI system table.  This is the initial decoding
of that system table.  It also collects the sizing information for
later allocation of dynamic conversion tables.

Tested-by: Dimitri Sivanich <sivanich@sgi.com>
Tested-by: John Estabrook <estabrook@sgi.com>
Tested-by: Gary Kroening <gfk@sgi.com>
Tested-by: Nathan Zimmer <nzimmer@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <rja@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160429215405.503022681@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Mike Travis 2016-04-29 16:54:19 -05:00 committed by Ingo Molnar
parent ef93bf8039
commit 1de329c10d
2 changed files with 129 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
arch/x86/include/asm/uv/uv_hub.h
View File

@ -147,15 +147,21 @@ struct uv_scir_s {
*/
struct uv_hub_info_s {
unsigned long global_mmr_base;
unsigned long global_mmr_shift;
unsigned long gpa_mask;
unsigned int gnode_extra;
unsigned short min_socket;
unsigned short min_pnode;
unsigned char hub_revision;
unsigned char apic_pnode_shift;
unsigned char gpa_shift;
unsigned char m_shift;
unsigned char n_lshift;
unsigned int gnode_extra;
unsigned long gnode_upper;
unsigned long lowmem_remap_top;
unsigned long lowmem_remap_base;
unsigned long global_gru_base;
unsigned long global_gru_shift;
unsigned short pnode;
unsigned short pnode_mask;
unsigned short coherency_domain_number;
@ -362,7 +368,8 @@ union uvh_apicid {
#define UV_GLOBAL_GRU_MMR_BASE 0x4000000
#define UV_GLOBAL_MMR32_PNODE_SHIFT 15
#define UV_GLOBAL_MMR64_PNODE_SHIFT 26
#define _UV_GLOBAL_MMR64_PNODE_SHIFT 26
#define UV_GLOBAL_MMR64_PNODE_SHIFT (uv_hub_info->global_mmr_shift)
#define UV_GLOBAL_MMR32_PNODE_BITS(p) ((p) << (UV_GLOBAL_MMR32_PNODE_SHIFT))

122
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -301,7 +301,13 @@ EXPORT_SYMBOL_GPL(uv_possible_blades);
unsigned long sn_rtc_cycles_per_second;
EXPORT_SYMBOL(sn_rtc_cycles_per_second);
/* the following values are used for the per node hub info struct */
static __initdata unsigned short *_node_to_pnode;
static __initdata unsigned short _min_socket, _max_socket;
static __initdata unsigned short _min_pnode, _max_pnode, _gr_table_len;
static __initdata struct uv_gam_range_entry *uv_gre_table;
static __initdata struct uv_gam_parameters *uv_gp_table;
#define SOCK_EMPTY ((unsigned short)~0)
extern int uv_hub_info_version(void)
{
@ -978,6 +984,7 @@ void __init uv_init_hub_info(struct uv_hub_info_s *hub_info)
hub_info->hub_revision = uv_hub_info->hub_revision;
hub_info->pnode_mask = uv_cpuid.pnode_mask;
hub_info->min_pnode = _min_pnode;
hub_info->gpa_mask = mn.m_val ?
(1UL << (mn.m_val + mn.n_val)) - 1 :
(1UL << uv_cpuid.gpa_shift) - 1;
@ -989,9 +996,19 @@ void __init uv_init_hub_info(struct uv_hub_info_s *hub_info)
hub_info->gnode_upper =
((unsigned long)hub_info->gnode_extra << mn.m_val);
if (uv_gp_table) {
hub_info->global_mmr_base = uv_gp_table->mmr_base;
hub_info->global_mmr_shift = uv_gp_table->mmr_shift;
hub_info->global_gru_base = uv_gp_table->gru_base;
hub_info->global_gru_shift = uv_gp_table->gru_shift;
hub_info->gpa_shift = uv_gp_table->gpa_shift;
hub_info->gpa_mask = (1UL << hub_info->gpa_shift) - 1;
} else {
hub_info->global_mmr_base =
uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
~UV_MMR_ENABLE;
hub_info->global_mmr_shift = _UV_GLOBAL_MMR64_PNODE_SHIFT;
}
get_lowmem_redirect(
&hub_info->lowmem_remap_base, &hub_info->lowmem_remap_top);
@ -1003,15 +1020,109 @@ void __init uv_init_hub_info(struct uv_hub_info_s *hub_info)
hub_info->n_val, hub_info->m_val,
hub_info->m_shift, hub_info->n_lshift);
pr_info("UV: pnode_mask:0x%x gpa_mask:0x%lx apic_pns:%d\n",
hub_info->pnode_mask, hub_info->gpa_mask,
hub_info->apic_pnode_shift);
pr_info("UV: gpa_mask/shift:0x%lx/%d pnode_mask:0x%x apic_pns:%d\n",
hub_info->gpa_mask, hub_info->gpa_shift,
hub_info->pnode_mask, hub_info->apic_pnode_shift);
pr_info("UV: mmr_base/shift:0x%lx/%ld gru_base/shift:0x%lx/%ld\n",
hub_info->global_mmr_base, hub_info->global_mmr_shift,
hub_info->global_gru_base, hub_info->global_gru_shift);
pr_info("UV: gnode_upper:0x%lx gnode_extra:0x%x\n",
hub_info->gnode_upper, hub_info->gnode_extra);
}
pr_info("UV: global MMR base 0x%lx\n", hub_info->global_mmr_base);
static void __init decode_gam_params(unsigned long ptr)
{
uv_gp_table = (struct uv_gam_parameters *)ptr;
pr_info("UV: GAM Params...\n");
pr_info("UV: mmr_base/shift:0x%llx/%d gru_base/shift:0x%llx/%d gpa_shift:%d\n",
uv_gp_table->mmr_base, uv_gp_table->mmr_shift,
uv_gp_table->gru_base, uv_gp_table->gru_shift,
uv_gp_table->gpa_shift);
}
static void __init decode_gam_rng_tbl(unsigned long ptr)
{
struct uv_gam_range_entry *gre = (struct uv_gam_range_entry *)ptr;
unsigned long lgre = 0;
int index = 0;
int sock_min = 999999, pnode_min = 99999;
int sock_max = -1, pnode_max = -1;
uv_gre_table = gre;
for (; gre->type != UV_GAM_RANGE_TYPE_UNUSED; gre++) {
if (!index) {
pr_info("UV: GAM Range Table...\n");
pr_info("UV: # %20s %14s %5s %4s %5s %3s %2s %3s\n",
"Range", "", "Size", "Type", "NASID",
"SID", "PN", "PXM");
}
pr_info(
"UV: %2d: 0x%014lx-0x%014lx %5luG %3d %04x %02x %02x %3d\n",
index++,
(unsigned long)lgre << UV_GAM_RANGE_SHFT,
(unsigned long)gre->limit << UV_GAM_RANGE_SHFT,
((unsigned long)(gre->limit - lgre)) >>
(30 - UV_GAM_RANGE_SHFT), /* 64M -> 1G */
gre->type, gre->nasid, gre->sockid,
gre->pnode, gre->pxm);
lgre = gre->limit;
if (sock_min > gre->sockid)
sock_min = gre->sockid;
if (sock_max < gre->sockid)
sock_max = gre->sockid;
if (pnode_min > gre->pnode)
pnode_min = gre->pnode;
if (pnode_max < gre->pnode)
pnode_max = gre->pnode;
}
_min_socket = sock_min;
_max_socket = sock_max;
_min_pnode = pnode_min;
_max_pnode = pnode_max;
_gr_table_len = index;
pr_info(
"UV: GRT: %d entries, sockets(min:%x,max:%x) pnodes(min:%x,max:%x)\n",
index, _min_socket, _max_socket, _min_pnode, _max_pnode);
}
static void __init decode_uv_systab(void)
{
struct uv_systab *st;
int i;
st = uv_systab;
if ((!st || st->revision < UV_SYSTAB_VERSION_UV4) && !is_uv4_hub())
return;
if (st->revision != UV_SYSTAB_VERSION_UV4_LATEST) {
pr_crit(
"UV: BIOS UVsystab version(%x) mismatch, expecting(%x)\n",
st->revision, UV_SYSTAB_VERSION_UV4_LATEST);
BUG();
}
for (i = 0; st->entry[i].type != UV_SYSTAB_TYPE_UNUSED; i++) {
unsigned long ptr = st->entry[i].offset;
if (!ptr)
continue;
ptr = ptr + (unsigned long)st;
switch (st->entry[i].type) {
case UV_SYSTAB_TYPE_GAM_PARAMS:
decode_gam_params(ptr);
break;
case UV_SYSTAB_TYPE_GAM_RNG_TBL:
decode_gam_rng_tbl(ptr);
break;
}
}
}
/*
@ -1080,6 +1191,8 @@ void __init uv_system_init(void)
if (is_uv1_hub())
map_low_mmrs();
uv_bios_init(); /* get uv_systab for decoding */
decode_uv_systab();
uv_init_hub_info(&hub_info);
uv_possible_blades = num_possible_nodes();
if (!_node_to_pnode)
@ -1091,7 +1204,6 @@ void __init uv_system_init(void)
num_possible_nodes(),
num_possible_cpus());
uv_bios_init();
uv_bios_get_sn_info(0, &uv_type, &sn_partition_id, &sn_coherency_id,
&sn_region_size, &system_serial_number);
hub_info.coherency_domain_number = sn_coherency_id;