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[IA64] Cleanup use of various #defines related to nodes 

Some of the SN code & #defines related to compact nodes & IO discovery
have gotten stale over the years. This patch attempts to clean them up.
Some of the various SN MAX_xxx #defines were also unclear & misused.

The primary changes are:

	- use MAX_NUMNODES. This is the generic linux #define for the number
	  of nodes that are known to the generic kernel. Arrays & loops
	  for constructs that are 1:1 with linux-defined nodes should
	  use the linux #define - not an SN equivalent.

	- use MAX_COMPACT_NODES for MAX_NUMNODES + NUM_TIOS. This is the
	  number of nodes in the SSI system. Compact nodes are a hack to
	  get around the IA64 architectural limit of 256 nodes. Large SGI
	  systems have more than 256 nodes. When we upgrade to ACPI3.0,
	  I _hope_ that all nodes will be real nodes that are known to
	  the generic kernel. That will allow us to delete the notion
	  of "compact nodes".

	- add MAX_NUMALINK_NODES for the total number of nodes that
	  are in the numalink domain - all partitions.

	- simplified (understandable) scan_for_ionodes()

	- small amount of cleanup related to cnodes

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Jack Steiner 2005-09-12 12:15:43 -05:00 committed by Tony Luck
parent 1619cca292
commit 24ee0a6d7b
12 changed files with 94 additions and 178 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/ia64/sn/kernel/io_init.c
View File

@ -22,8 +22,6 @@
#include "xtalk/hubdev.h"
#include "xtalk/xwidgetdev.h"
nasid_t master_nasid = INVALID_NASID; /* Partition Master */
static struct list_head sn_sysdata_list;
/* sysdata list struct */
@ -165,7 +163,7 @@ static void sn_fixup_ionodes(void)
* Get SGI Specific HUB chipset information.
* Inform Prom that this kernel can support domain bus numbering.
*/
for (i = 0; i < numionodes; i++) {
for (i = 0; i < num_cnodes; i++) {
hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
nasid = cnodeid_to_nasid(i);
hubdev->max_segment_number = 0xffffffff;

164
arch/ia64/sn/kernel/setup.c
View File

@ -59,8 +59,6 @@ DEFINE_PER_CPU(struct pda_s, pda_percpu);
#define MAX_PHYS_MEMORY (1UL << IA64_MAX_PHYS_BITS) /* Max physical address supported */
lboard_t *root_lboard[MAX_COMPACT_NODES];
extern void bte_init_node(nodepda_t *, cnodeid_t);
extern void sn_timer_init(void);
@ -97,15 +95,15 @@ u8 sn_region_size;
EXPORT_SYMBOL(sn_region_size);
int sn_prom_type; /* 0=hardware, 1=medusa/realprom, 2=medusa/fakeprom */
short physical_node_map[MAX_PHYSNODE_ID];
short physical_node_map[MAX_NUMALINK_NODES];
static unsigned long sn_prom_features[MAX_PROM_FEATURE_SETS];
EXPORT_SYMBOL(physical_node_map);
int numionodes;
int num_cnodes;
static void sn_init_pdas(char **);
static void scan_for_ionodes(void);
static void build_cnode_tables(void);
static nodepda_t *nodepdaindr[MAX_COMPACT_NODES];
@ -139,19 +137,6 @@ extern char drive_info[4 * 16];
char drive_info[4 * 16];
#endif
/*
* Get nasid of current cpu early in boot before nodepda is initialized
*/
static int
boot_get_nasid(void)
{
int nasid;
if (ia64_sn_get_sapic_info(get_sapicid(), &nasid, NULL, NULL))
BUG();
return nasid;
}
/*
* This routine can only be used during init, since
* smp_boot_data is an init data structure.
@ -223,7 +208,6 @@ void __init early_sn_setup(void)
}
extern int platform_intr_list[];
extern nasid_t master_nasid;
static int __initdata shub_1_1_found = 0;
/*
@ -269,7 +253,6 @@ static void __init sn_check_for_wars(void)
void __init sn_setup(char **cmdline_p)
{
long status, ticks_per_sec, drift;
int pxm;
u32 version = sn_sal_rev();
extern void sn_cpu_init(void);
@ -300,11 +283,10 @@ void __init sn_setup(char **cmdline_p)
MAX_DMA_ADDRESS = PAGE_OFFSET + MAX_PHYS_MEMORY;
memset(physical_node_map, -1, sizeof(physical_node_map));
for (pxm = 0; pxm < MAX_PXM_DOMAINS; pxm++)
if (pxm_to_nid_map[pxm] != -1)
physical_node_map[pxm_to_nasid(pxm)] =
pxm_to_nid_map[pxm];
/*
* Build the tables for managing cnodes.
*/
build_cnode_tables();
/*
* Old PROMs do not provide an ACPI FADT. Disable legacy keyboard
@ -319,8 +301,6 @@ void __init sn_setup(char **cmdline_p)
printk("SGI SAL version %x.%02x\n", version >> 8, version & 0x00FF);
master_nasid = boot_get_nasid();
status =
ia64_sal_freq_base(SAL_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
&drift);
@ -378,15 +358,6 @@ static void __init sn_init_pdas(char **cmdline_p)
{
cnodeid_t cnode;
memset(sn_cnodeid_to_nasid, -1,
sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
for_each_online_node(cnode)
sn_cnodeid_to_nasid[cnode] =
pxm_to_nasid(nid_to_pxm_map[cnode]);
numionodes = num_online_nodes();
scan_for_ionodes();
/*
* Allocate & initalize the nodepda for each node.
*/
@ -402,7 +373,7 @@ static void __init sn_init_pdas(char **cmdline_p)
/*
* Allocate & initialize nodepda for TIOs. For now, put them on node 0.
*/
for (cnode = num_online_nodes(); cnode < numionodes; cnode++) {
for (cnode = num_online_nodes(); cnode < num_cnodes; cnode++) {
nodepdaindr[cnode] =
alloc_bootmem_node(NODE_DATA(0), sizeof(nodepda_t));
memset(nodepdaindr[cnode], 0, sizeof(nodepda_t));
@ -411,7 +382,7 @@ static void __init sn_init_pdas(char **cmdline_p)
/*
* Now copy the array of nodepda pointers to each nodepda.
*/
for (cnode = 0; cnode < numionodes; cnode++)
for (cnode = 0; cnode < num_cnodes; cnode++)
memcpy(nodepdaindr[cnode]->pernode_pdaindr, nodepdaindr,
sizeof(nodepdaindr));
@ -428,7 +399,7 @@ static void __init sn_init_pdas(char **cmdline_p)
* Initialize the per node hubdev. This includes IO Nodes and
* headless/memless nodes.
*/
for (cnode = 0; cnode < numionodes; cnode++) {
for (cnode = 0; cnode < num_cnodes; cnode++) {
hubdev_init_node(nodepdaindr[cnode], cnode);
}
}
@ -553,87 +524,58 @@ void __init sn_cpu_init(void)
}
/*
* Scan klconfig for ionodes. Add the nasids to the
* physical_node_map and the pda and increment numionodes.
* Build tables for converting between NASIDs and cnodes.
*/
static void __init scan_for_ionodes(void)
static inline int __init board_needs_cnode(int type)
{
int nasid = 0;
return (type == KLTYPE_SNIA || type == KLTYPE_TIO);
}
void __init build_cnode_tables(void)
{
int nasid;
int node;
lboard_t *brd;
memset(physical_node_map, -1, sizeof(physical_node_map));
memset(sn_cnodeid_to_nasid, -1,
sizeof(__ia64_per_cpu_var(__sn_cnodeid_to_nasid)));
/*
* First populate the tables with C/M bricks. This ensures that
* cnode == node for all C & M bricks.
*/
for_each_online_node(node) {
nasid = pxm_to_nasid(nid_to_pxm_map[node]);
sn_cnodeid_to_nasid[node] = nasid;
physical_node_map[nasid] = node;
}
/*
* num_cnodes is total number of C/M/TIO bricks. Because of the 256 node
* limit on the number of nodes, we can't use the generic node numbers
* for this. Note that num_cnodes is incremented below as TIOs or
* headless/memoryless nodes are discovered.
*/
num_cnodes = num_online_nodes();
/* fakeprom does not support klgraph */
if (IS_RUNNING_ON_FAKE_PROM())
return;
/* Setup ionodes with memory */
for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
char *klgraph_header;
cnodeid_t cnodeid;
if (physical_node_map[nasid] == -1)
continue;
cnodeid = -1;
klgraph_header = __va(ia64_sn_get_klconfig_addr(nasid));
if (!klgraph_header) {
BUG(); /* All nodes must have klconfig tables! */
}
cnodeid = nasid_to_cnodeid(nasid);
root_lboard[cnodeid] = (lboard_t *)
NODE_OFFSET_TO_LBOARD((nasid),
((kl_config_hdr_t
*) (klgraph_header))->
ch_board_info);
}
/* Scan headless/memless IO Nodes. */
for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
/* if there's no nasid, don't try to read the klconfig on the node */
if (physical_node_map[nasid] == -1)
continue;
brd = find_lboard_any((lboard_t *)
root_lboard[nasid_to_cnodeid(nasid)],
KLTYPE_SNIA);
if (brd) {
brd = KLCF_NEXT_ANY(brd); /* Skip this node's lboard */
if (!brd)
continue;
}
brd = find_lboard_any(brd, KLTYPE_SNIA);
/* Find TIOs & headless/memoryless nodes and add them to the tables */
for_each_online_node(node) {
kl_config_hdr_t *klgraph_header;
nasid = cnodeid_to_nasid(node);
if ((klgraph_header = ia64_sn_get_klconfig_addr(nasid)) == NULL)
BUG();
brd = NODE_OFFSET_TO_LBOARD(nasid, klgraph_header->ch_board_info);
while (brd) {
sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
brd = KLCF_NEXT_ANY(brd);
if (!brd)
break;
brd = find_lboard_any(brd, KLTYPE_SNIA);
}
}
/* Scan for TIO nodes. */
for (nasid = 0; nasid < MAX_PHYSNODE_ID; nasid += 2) {
/* if there's no nasid, don't try to read the klconfig on the node */
if (physical_node_map[nasid] == -1)
continue;
brd = find_lboard_any((lboard_t *)
root_lboard[nasid_to_cnodeid(nasid)],
KLTYPE_TIO);
while (brd) {
sn_cnodeid_to_nasid[numionodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = numionodes;
root_lboard[numionodes] = brd;
numionodes++;
brd = KLCF_NEXT_ANY(brd);
if (!brd)
break;
brd = find_lboard_any(brd, KLTYPE_TIO);
if (board_needs_cnode(brd->brd_type) && physical_node_map[brd->brd_nasid] < 0) {
sn_cnodeid_to_nasid[num_cnodes] = brd->brd_nasid;
physical_node_map[brd->brd_nasid] = num_cnodes++;
}
brd = find_lboard_next(brd);
}
}
}

4
arch/ia64/sn/kernel/sn2/sn_hwperf.c
View File

@ -476,8 +476,8 @@ static int sn_topology_show(struct seq_file *s, void *d)
for_each_online_cpu(j) {
seq_printf(s, j ? ":%d" : ", dist %d",
node_distance(
cpuid_to_cnodeid(i),
cpuid_to_cnodeid(j)));
cpu_to_node(i),
cpu_to_node(j)));
}
seq_putc(s, '\n');
}

5
arch/ia64/sn/kernel/tiocx.c
View File

@ -486,11 +486,10 @@ static int __init tiocx_init(void)
bus_register(&tiocx_bus_type);
for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {
for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) {
nasid_t nasid;
if ((nasid = cnodeid_to_nasid(cnodeid)) < 0)
break; /* No more nasids .. bail out of loop */
nasid = cnodeid_to_nasid(cnodeid);
if ((nasid & 0x1) && is_fpga_brick(nasid)) {
struct hubdev_info *hubdev;

2
arch/ia64/sn/kernel/xpc_partition.c
View File

@ -44,7 +44,7 @@ static u64 xpc_sh2_IPI_access3;
/* original protection values for each node */
u64 xpc_prot_vec[MAX_COMPACT_NODES];
u64 xpc_prot_vec[MAX_NUMNODES];
/* this partition's reserved page */

4
drivers/char/snsc.c
View File

@ -377,7 +377,7 @@ scdrv_init(void)
dev_t first_dev, dev;
nasid_t event_nasid = ia64_sn_get_console_nasid();
if (alloc_chrdev_region(&first_dev, 0, numionodes,
if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
SYSCTL_BASENAME) < 0) {
printk("%s: failed to register SN system controller device\n",
__FUNCTION__);
@ -385,7 +385,7 @@ scdrv_init(void)
}
snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
for (cnode = 0; cnode < numionodes; cnode++) {
for (cnode = 0; cnode < num_cnodes; cnode++) {
geoid = cnodeid_get_geoid(cnode);
devnamep = devname;
format_module_id(devnamep, geo_module(geoid),

36
include/asm-ia64/sn/arch.h
View File

@ -17,6 +17,32 @@
#include <asm/sn/types.h>
#include <asm/sn/sn_cpuid.h>
/*
* This is the maximum number of NUMALINK nodes that can be part of a single
* SSI kernel. This number includes C-brick, M-bricks, and TIOs. Nodes in
* remote partitions are NOT included in this number.
* The number of compact nodes cannot exceed size of a coherency domain.
* The purpose of this define is to specify a node count that includes
* all C/M/TIO nodes in an SSI system.
*
* SGI system can currently support up to 256 C/M nodes plus additional TIO nodes.
*
* Note: ACPI20 has an architectural limit of 256 nodes. When we upgrade
* to ACPI3.0, this limit will be removed. The notion of "compact nodes"
* should be deleted and TIOs should be included in MAX_NUMNODES.
*/
#define MAX_COMPACT_NODES 512
/*
* Maximum number of nodes in all partitions and in all coherency domains.
* This is the total number of nodes accessible in the numalink fabric. It
* includes all C & M bricks, plus all TIOs.
*
* This value is also the value of the maximum number of NASIDs in the numalink
* fabric.
*/
#define MAX_NUMALINK_NODES 2048
/*
* The following defines attributes of the HUB chip. These attributes are
* frequently referenced. They are kept in the per-cpu data areas of each cpu.
@ -40,15 +66,6 @@ DECLARE_PER_CPU(struct sn_hub_info_s, __sn_hub_info);
#define enable_shub_wars_1_1() (sn_hub_info->shub_1_1_found)
/*
* This is the maximum number of nodes that can be part of a kernel.
* Effectively, it's the maximum number of compact node ids (cnodeid_t).
* This is not necessarily the same as MAX_NASIDS.
*/
#define MAX_COMPACT_NODES 2048
#define CPUS_PER_NODE 4
/*
* Compact node ID to nasid mappings kept in the per-cpu data areas of each
* cpu.
@ -57,7 +74,6 @@ DECLARE_PER_CPU(short, __sn_cnodeid_to_nasid[MAX_NUMNODES]);
#define sn_cnodeid_to_nasid (&__get_cpu_var(__sn_cnodeid_to_nasid[0]))
extern u8 sn_partition_id;
extern u8 sn_system_size;
extern u8 sn_sharing_domain_size;

2
include/asm-ia64/sn/io.h
View File

@ -14,7 +14,7 @@
extern void * sn_io_addr(unsigned long port) __attribute_const__; /* Forward definition */
extern void __sn_mmiowb(void); /* Forward definition */
extern int numionodes;
extern int num_cnodes;
#define __sn_mf_a() ia64_mfa()

34
include/asm-ia64/sn/klconfig.h
View File

@ -208,19 +208,6 @@ typedef struct lboard_s {
klconf_off_t brd_next_same; /* Next BOARD with same nasid */
} lboard_t;
#define KLCF_NUM_COMPS(_brd) ((_brd)->brd_numcompts)
#define NODE_OFFSET_TO_KLINFO(n,off) ((klinfo_t*) TO_NODE_CAC(n,off))
#define KLCF_NEXT(_brd) \
((_brd)->brd_next_same ? \
(NODE_OFFSET_TO_LBOARD((_brd)->brd_next_same_host, (_brd)->brd_next_same)): NULL)
#define KLCF_NEXT_ANY(_brd) \
((_brd)->brd_next_any ? \
(NODE_OFFSET_TO_LBOARD(NASID_GET(_brd), (_brd)->brd_next_any)): NULL)
#define KLCF_COMP(_brd, _ndx) \
((((_brd)->brd_compts[(_ndx)]) == 0) ? 0 : \
(NODE_OFFSET_TO_KLINFO(NASID_GET(_brd), (_brd)->brd_compts[(_ndx)])))
/*
* Generic info structure. This stores common info about a
* component.
@ -249,24 +236,11 @@ typedef struct klinfo_s { /* Generic info */
} klinfo_t ;
static inline lboard_t *find_lboard_any(lboard_t * start, unsigned char brd_type)
static inline lboard_t *find_lboard_next(lboard_t * brd)
{
/* Search all boards stored on this node. */
while (start) {
if (start->brd_type == brd_type)
return start;
start = KLCF_NEXT_ANY(start);
}
/* Didn't find it. */
return (lboard_t *) NULL;
if (brd && brd->brd_next_any)
return NODE_OFFSET_TO_LBOARD(NASID_GET(brd), brd->brd_next_any);
return NULL;
}
/* external declarations of Linux kernel functions. */
extern lboard_t *root_lboard[];
extern klinfo_t *find_component(lboard_t *brd, klinfo_t *kli, unsigned char type);
extern klinfo_t *find_first_component(lboard_t *brd, unsigned char type);
#endif /* _ASM_IA64_SN_KLCONFIG_H */

3
include/asm-ia64/sn/sn_cpuid.h
View File

@ -105,7 +105,6 @@ extern short physical_node_map[]; /* indexed by nasid to get cnode */
#define cpuid_to_nasid(cpuid) (sn_nodepda->phys_cpuid[cpuid].nasid)
#define cpuid_to_subnode(cpuid) (sn_nodepda->phys_cpuid[cpuid].subnode)
#define cpuid_to_slice(cpuid) (sn_nodepda->phys_cpuid[cpuid].slice)
#define cpuid_to_cnodeid(cpuid) (physical_node_map[cpuid_to_nasid(cpuid)])
/*
@ -113,8 +112,6 @@ extern short physical_node_map[]; /* indexed by nasid to get cnode */
* of potentially large tables.
*/
extern int nasid_slice_to_cpuid(int, int);
#define nasid_slice_to_cpu_physical_id(nasid, slice) \
cpu_physical_id(nasid_slice_to_cpuid(nasid, slice))
/*
* cnodeid_to_nasid - convert a cnodeid to a NASID

12
include/asm-ia64/sn/sn_sal.h
View File

@ -198,26 +198,16 @@ ia64_sn_get_master_baseio_nasid(void)
return ret_stuff.v0;
}
static inline char *
static inline void *
ia64_sn_get_klconfig_addr(nasid_t nasid)
{
struct ia64_sal_retval ret_stuff;
int cnodeid;
cnodeid = nasid_to_cnodeid(nasid);
ret_stuff.status = 0;
ret_stuff.v0 = 0;
ret_stuff.v1 = 0;
ret_stuff.v2 = 0;
SAL_CALL(ret_stuff, SN_SAL_GET_KLCONFIG_ADDR, (u64)nasid, 0, 0, 0, 0, 0, 0);
/*
* We should panic if a valid cnode nasid does not produce
* a klconfig address.
*/
if (ret_stuff.status != 0) {
panic("ia64_sn_get_klconfig_addr: Returned error %lx\n", ret_stuff.status);
}
return ret_stuff.v0 ? __va(ret_stuff.v0) : NULL;
}

2
include/asm-ia64/sn/xp.h
View File

@ -49,7 +49,7 @@
* C-brick nasids, thus the need for bitmaps which don't account for
* odd-numbered (non C-brick) nasids.
*/
#define XP_MAX_PHYSNODE_ID (MAX_PHYSNODE_ID / 2)
#define XP_MAX_PHYSNODE_ID (MAX_NUMALINK_NODES / 2)
#define XP_NASID_MASK_BYTES ((XP_MAX_PHYSNODE_ID + 7) / 8)
#define XP_NASID_MASK_WORDS ((XP_MAX_PHYSNODE_ID + 63) / 64)