sgi-xp: create activate and notify gru message queues
For UV add the code to create the activate and notify gru message queues. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Dean Nelson
H. Peter Anvin
parent
6c1c325de9
commit
2525789b46
@ -180,6 +180,18 @@ struct xpc_vars_part_sn2 {
|
||||
(XPC_RP_MACH_NASIDS(_rp) + \
|
||||
xpc_nasid_mask_nlongs))
|
||||
|
||||
/*
|
||||
* Info pertinent to a GRU message queue using a watch list for irq generation.
|
||||
*/
|
||||
struct xpc_gru_mq_uv {
|
||||
void *address; /* address of GRU message queue */
|
||||
unsigned int order; /* size of GRU message queue as a power of 2 */
|
||||
int irq; /* irq raised when message is received in mq */
|
||||
int mmr_blade; /* blade where watchlist was allocated from */
|
||||
unsigned long mmr_offset; /* offset of irq mmr located on mmr_blade */
|
||||
int watchlist_num; /* number of watchlist allocatd by BIOS */
|
||||
};
|
||||
|
||||
/*
|
||||
* The activate_mq is used to send/receive GRU messages that affect XPC's
|
||||
* heartbeat, partition active state, and channel state. This is UV only.
|
||||
|
||||
@ -18,7 +18,15 @@
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/err.h>
|
||||
#include <asm/uv/uv_hub.h>
|
||||
#if defined CONFIG_X86_64
|
||||
#include <asm/uv/bios.h>
|
||||
#include <asm/uv/uv_irq.h>
|
||||
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
||||
#include <asm/sn/intr.h>
|
||||
#include <asm/sn/sn_sal.h>
|
||||
#endif
|
||||
#include "../sgi-gru/gru.h"
|
||||
#include "../sgi-gru/grukservices.h"
|
||||
#include "xpc.h"
|
||||
@ -27,15 +35,17 @@ static atomic64_t xpc_heartbeat_uv;
|
||||
static DECLARE_BITMAP(xpc_heartbeating_to_mask_uv, XP_MAX_NPARTITIONS_UV);
|
||||
|
||||
#define XPC_ACTIVATE_MSG_SIZE_UV (1 * GRU_CACHE_LINE_BYTES)
|
||||
#define XPC_ACTIVATE_MQ_SIZE_UV (4 * XP_MAX_NPARTITIONS_UV * \
|
||||
XPC_ACTIVATE_MSG_SIZE_UV)
|
||||
#define XPC_ACTIVATE_IRQ_NAME "xpc_activate"
|
||||
|
||||
#define XPC_NOTIFY_MSG_SIZE_UV (2 * GRU_CACHE_LINE_BYTES)
|
||||
#define XPC_NOTIFY_MQ_SIZE_UV (4 * XP_MAX_NPARTITIONS_UV * \
|
||||
XPC_NOTIFY_MSG_SIZE_UV)
|
||||
#define XPC_NOTIFY_IRQ_NAME "xpc_notify"
|
||||
|
||||
#define XPC_ACTIVATE_MQ_SIZE_UV (4 * XP_MAX_NPARTITIONS_UV * \
|
||||
XPC_ACTIVATE_MSG_SIZE_UV)
|
||||
#define XPC_NOTIFY_MQ_SIZE_UV (4 * XP_MAX_NPARTITIONS_UV * \
|
||||
XPC_NOTIFY_MSG_SIZE_UV)
|
||||
|
||||
static void *xpc_activate_mq_uv;
|
||||
static void *xpc_notify_mq_uv;
|
||||
static struct xpc_gru_mq_uv *xpc_activate_mq_uv;
|
||||
static struct xpc_gru_mq_uv *xpc_notify_mq_uv;
|
||||
|
||||
static int
|
||||
xpc_setup_partitions_sn_uv(void)
|
||||
@ -52,62 +62,209 @@ xpc_setup_partitions_sn_uv(void)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void *
|
||||
xpc_create_gru_mq_uv(unsigned int mq_size, int cpuid, unsigned int irq,
|
||||
irq_handler_t irq_handler)
|
||||
static int
|
||||
xpc_get_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq, int cpu, char *irq_name)
|
||||
{
|
||||
int ret;
|
||||
int nid;
|
||||
int mq_order;
|
||||
struct page *page;
|
||||
void *mq;
|
||||
|
||||
nid = cpu_to_node(cpuid);
|
||||
mq_order = get_order(mq_size);
|
||||
page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
|
||||
mq_order);
|
||||
if (page == NULL) {
|
||||
dev_err(xpc_part, "xpc_create_gru_mq_uv() failed to alloc %d "
|
||||
"bytes of memory on nid=%d for GRU mq\n", mq_size, nid);
|
||||
return NULL;
|
||||
#if defined CONFIG_X86_64
|
||||
mq->irq = uv_setup_irq(irq_name, cpu, mq->mmr_blade, mq->mmr_offset);
|
||||
if (mq->irq < 0) {
|
||||
dev_err(xpc_part, "uv_setup_irq() returned error=%d\n",
|
||||
mq->irq);
|
||||
}
|
||||
|
||||
mq = page_address(page);
|
||||
ret = gru_create_message_queue(mq, mq_size);
|
||||
if (ret != 0) {
|
||||
dev_err(xpc_part, "gru_create_message_queue() returned "
|
||||
"error=%d\n", ret);
|
||||
free_pages((unsigned long)mq, mq_order);
|
||||
return NULL;
|
||||
}
|
||||
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
||||
int mmr_pnode;
|
||||
unsigned long mmr_value;
|
||||
|
||||
/* !!! Need to do some other things to set up IRQ */
|
||||
if (strcmp(irq_name, XPC_ACTIVATE_IRQ_NAME) == 0)
|
||||
mq->irq = SGI_XPC_ACTIVATE;
|
||||
else if (strcmp(irq_name, XPC_NOTIFY_IRQ_NAME) == 0)
|
||||
mq->irq = SGI_XPC_NOTIFY;
|
||||
else
|
||||
return -EINVAL;
|
||||
|
||||
ret = request_irq(irq, irq_handler, 0, "xpc", NULL);
|
||||
if (ret != 0) {
|
||||
dev_err(xpc_part, "request_irq(irq=%d) returned error=%d\n",
|
||||
irq, ret);
|
||||
free_pages((unsigned long)mq, mq_order);
|
||||
return NULL;
|
||||
}
|
||||
mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
|
||||
mmr_value = (unsigned long)cpu_physical_id(cpu) << 32 | mq->irq;
|
||||
|
||||
/* !!! enable generation of irq when GRU mq op occurs to this mq */
|
||||
uv_write_global_mmr64(mmr_pnode, mq->mmr_offset, mmr_value);
|
||||
#else
|
||||
#error not a supported configuration
|
||||
#endif
|
||||
|
||||
/* ??? allow other partitions to access GRU mq? */
|
||||
|
||||
return mq;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
xpc_destroy_gru_mq_uv(void *mq, unsigned int mq_size, unsigned int irq)
|
||||
xpc_release_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq)
|
||||
{
|
||||
/* ??? disallow other partitions to access GRU mq? */
|
||||
#if defined CONFIG_X86_64
|
||||
uv_teardown_irq(mq->irq, mq->mmr_blade, mq->mmr_offset);
|
||||
|
||||
/* !!! disable generation of irq when GRU mq op occurs to this mq */
|
||||
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
||||
int mmr_pnode;
|
||||
unsigned long mmr_value;
|
||||
|
||||
free_irq(irq, NULL);
|
||||
mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
|
||||
mmr_value = 1UL << 16;
|
||||
|
||||
free_pages((unsigned long)mq, get_order(mq_size));
|
||||
uv_write_global_mmr64(mmr_pnode, mq->mmr_offset, mmr_value);
|
||||
#else
|
||||
#error not a supported configuration
|
||||
#endif
|
||||
}
|
||||
|
||||
static int
|
||||
xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
|
||||
{
|
||||
int ret;
|
||||
|
||||
#if defined CONFIG_X86_64
|
||||
ret = uv_bios_mq_watchlist_alloc(mq->mmr_blade, mq->address, mq->order,
|
||||
&mq->mmr_offset);
|
||||
if (ret < 0) {
|
||||
dev_err(xpc_part, "uv_bios_mq_watchlist_alloc() failed, "
|
||||
"ret=%d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
||||
ret = sn_mq_watchlist_alloc(mq->mmr_blade, mq->address, mq->order,
|
||||
&mq->mmr_offset);
|
||||
if (ret < 0) {
|
||||
dev_err(xpc_part, "sn_mq_watchlist_alloc() failed, ret=%d\n",
|
||||
ret);
|
||||
return -EBUSY;
|
||||
}
|
||||
#else
|
||||
#error not a supported configuration
|
||||
#endif
|
||||
|
||||
mq->watchlist_num = ret;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
xpc_gru_mq_watchlist_free_uv(struct xpc_gru_mq_uv *mq)
|
||||
{
|
||||
int ret;
|
||||
|
||||
#if defined CONFIG_X86_64
|
||||
ret = uv_bios_mq_watchlist_free(mq->mmr_blade, mq->watchlist_num);
|
||||
BUG_ON(ret != BIOS_STATUS_SUCCESS);
|
||||
#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV
|
||||
ret = sn_mq_watchlist_free(mq->mmr_blade, mq->watchlist_num);
|
||||
BUG_ON(ret != SALRET_OK);
|
||||
#else
|
||||
#error not a supported configuration
|
||||
#endif
|
||||
}
|
||||
|
||||
static struct xpc_gru_mq_uv *
|
||||
xpc_create_gru_mq_uv(unsigned int mq_size, int cpu, char *irq_name,
|
||||
irq_handler_t irq_handler)
|
||||
{
|
||||
enum xp_retval xp_ret;
|
||||
int ret;
|
||||
int nid;
|
||||
int pg_order;
|
||||
struct page *page;
|
||||
struct xpc_gru_mq_uv *mq;
|
||||
|
||||
mq = kmalloc(sizeof(struct xpc_gru_mq_uv), GFP_KERNEL);
|
||||
if (mq == NULL) {
|
||||
dev_err(xpc_part, "xpc_create_gru_mq_uv() failed to kmalloc() "
|
||||
"a xpc_gru_mq_uv structure\n");
|
||||
ret = -ENOMEM;
|
||||
goto out_1;
|
||||
}
|
||||
|
||||
pg_order = get_order(mq_size);
|
||||
mq->order = pg_order + PAGE_SHIFT;
|
||||
mq_size = 1UL << mq->order;
|
||||
|
||||
mq->mmr_blade = uv_cpu_to_blade_id(cpu);
|
||||
|
||||
nid = cpu_to_node(cpu);
|
||||
page = alloc_pages_node(nid, GFP_KERNEL | __GFP_ZERO | GFP_THISNODE,
|
||||
pg_order);
|
||||
if (page == NULL) {
|
||||
dev_err(xpc_part, "xpc_create_gru_mq_uv() failed to alloc %d "
|
||||
"bytes of memory on nid=%d for GRU mq\n", mq_size, nid);
|
||||
ret = -ENOMEM;
|
||||
goto out_2;
|
||||
}
|
||||
mq->address = page_address(page);
|
||||
|
||||
ret = gru_create_message_queue(mq->address, mq_size);
|
||||
if (ret != 0) {
|
||||
dev_err(xpc_part, "gru_create_message_queue() returned "
|
||||
"error=%d\n", ret);
|
||||
ret = -EINVAL;
|
||||
goto out_3;
|
||||
}
|
||||
|
||||
/* enable generation of irq when GRU mq operation occurs to this mq */
|
||||
ret = xpc_gru_mq_watchlist_alloc_uv(mq);
|
||||
if (ret != 0)
|
||||
goto out_3;
|
||||
|
||||
ret = xpc_get_gru_mq_irq_uv(mq, cpu, irq_name);
|
||||
if (ret != 0)
|
||||
goto out_4;
|
||||
|
||||
ret = request_irq(mq->irq, irq_handler, 0, irq_name, NULL);
|
||||
if (ret != 0) {
|
||||
dev_err(xpc_part, "request_irq(irq=%d) returned error=%d\n",
|
||||
mq->irq, ret);
|
||||
goto out_5;
|
||||
}
|
||||
|
||||
/* allow other partitions to access this GRU mq */
|
||||
xp_ret = xp_expand_memprotect(xp_pa(mq->address), mq_size);
|
||||
if (xp_ret != xpSuccess) {
|
||||
ret = -EACCES;
|
||||
goto out_6;
|
||||
}
|
||||
|
||||
return mq;
|
||||
|
||||
/* something went wrong */
|
||||
out_6:
|
||||
free_irq(mq->irq, NULL);
|
||||
out_5:
|
||||
xpc_release_gru_mq_irq_uv(mq);
|
||||
out_4:
|
||||
xpc_gru_mq_watchlist_free_uv(mq);
|
||||
out_3:
|
||||
free_pages((unsigned long)mq->address, pg_order);
|
||||
out_2:
|
||||
kfree(mq);
|
||||
out_1:
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
static void
|
||||
xpc_destroy_gru_mq_uv(struct xpc_gru_mq_uv *mq)
|
||||
{
|
||||
unsigned int mq_size;
|
||||
int pg_order;
|
||||
int ret;
|
||||
|
||||
/* disallow other partitions to access GRU mq */
|
||||
mq_size = 1UL << mq->order;
|
||||
ret = xp_restrict_memprotect(xp_pa(mq->address), mq_size);
|
||||
BUG_ON(ret != xpSuccess);
|
||||
|
||||
/* unregister irq handler and release mq irq/vector mapping */
|
||||
free_irq(mq->irq, NULL);
|
||||
xpc_release_gru_mq_irq_uv(mq);
|
||||
|
||||
/* disable generation of irq when GRU mq op occurs to this mq */
|
||||
xpc_gru_mq_watchlist_free_uv(mq);
|
||||
|
||||
pg_order = mq->order - PAGE_SHIFT;
|
||||
free_pages((unsigned long)mq->address, pg_order);
|
||||
|
||||
kfree(mq);
|
||||
}
|
||||
|
||||
static enum xp_retval
|
||||
@ -402,7 +559,10 @@ xpc_handle_activate_IRQ_uv(int irq, void *dev_id)
|
||||
struct xpc_partition *part;
|
||||
int wakeup_hb_checker = 0;
|
||||
|
||||
while ((msg_hdr = gru_get_next_message(xpc_activate_mq_uv)) != NULL) {
|
||||
while (1) {
|
||||
msg_hdr = gru_get_next_message(xpc_activate_mq_uv->address);
|
||||
if (msg_hdr == NULL)
|
||||
break;
|
||||
|
||||
partid = msg_hdr->partid;
|
||||
if (partid < 0 || partid >= XP_MAX_NPARTITIONS_UV) {
|
||||
@ -418,7 +578,7 @@ xpc_handle_activate_IRQ_uv(int irq, void *dev_id)
|
||||
}
|
||||
}
|
||||
|
||||
gru_free_message(xpc_activate_mq_uv, msg_hdr);
|
||||
gru_free_message(xpc_activate_mq_uv->address, msg_hdr);
|
||||
}
|
||||
|
||||
if (wakeup_hb_checker)
|
||||
@ -507,7 +667,7 @@ xpc_get_partition_rsvd_page_pa_uv(void *buf, u64 *cookie, unsigned long *rp_pa,
|
||||
static int
|
||||
xpc_setup_rsvd_page_sn_uv(struct xpc_rsvd_page *rp)
|
||||
{
|
||||
rp->sn.activate_mq_gpa = uv_gpa(xpc_activate_mq_uv);
|
||||
rp->sn.activate_mq_gpa = uv_gpa(xpc_activate_mq_uv->address);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1411,22 +1571,18 @@ xpc_init_uv(void)
|
||||
return -E2BIG;
|
||||
}
|
||||
|
||||
/* ??? The cpuid argument's value is 0, is that what we want? */
|
||||
/* !!! The irq argument's value isn't correct. */
|
||||
xpc_activate_mq_uv = xpc_create_gru_mq_uv(XPC_ACTIVATE_MQ_SIZE_UV, 0, 0,
|
||||
xpc_activate_mq_uv = xpc_create_gru_mq_uv(XPC_ACTIVATE_MQ_SIZE_UV, 0,
|
||||
XPC_ACTIVATE_IRQ_NAME,
|
||||
xpc_handle_activate_IRQ_uv);
|
||||
if (xpc_activate_mq_uv == NULL)
|
||||
return -ENOMEM;
|
||||
if (IS_ERR(xpc_activate_mq_uv))
|
||||
return PTR_ERR(xpc_activate_mq_uv);
|
||||
|
||||
/* ??? The cpuid argument's value is 0, is that what we want? */
|
||||
/* !!! The irq argument's value isn't correct. */
|
||||
xpc_notify_mq_uv = xpc_create_gru_mq_uv(XPC_NOTIFY_MQ_SIZE_UV, 0, 0,
|
||||
xpc_notify_mq_uv = xpc_create_gru_mq_uv(XPC_NOTIFY_MQ_SIZE_UV, 0,
|
||||
XPC_NOTIFY_IRQ_NAME,
|
||||
xpc_handle_notify_IRQ_uv);
|
||||
if (xpc_notify_mq_uv == NULL) {
|
||||
/* !!! The irq argument's value isn't correct. */
|
||||
xpc_destroy_gru_mq_uv(xpc_activate_mq_uv,
|
||||
XPC_ACTIVATE_MQ_SIZE_UV, 0);
|
||||
return -ENOMEM;
|
||||
if (IS_ERR(xpc_notify_mq_uv)) {
|
||||
xpc_destroy_gru_mq_uv(xpc_activate_mq_uv);
|
||||
return PTR_ERR(xpc_notify_mq_uv);
|
||||
}
|
||||
|
||||
return 0;
|
||||
@ -1435,9 +1591,6 @@ xpc_init_uv(void)
|
||||
void
|
||||
xpc_exit_uv(void)
|
||||
{
|
||||
/* !!! The irq argument's value isn't correct. */
|
||||
xpc_destroy_gru_mq_uv(xpc_notify_mq_uv, XPC_NOTIFY_MQ_SIZE_UV, 0);
|
||||
|
||||
/* !!! The irq argument's value isn't correct. */
|
||||
xpc_destroy_gru_mq_uv(xpc_activate_mq_uv, XPC_ACTIVATE_MQ_SIZE_UV, 0);
|
||||
xpc_destroy_gru_mq_uv(xpc_notify_mq_uv);
|
||||
xpc_destroy_gru_mq_uv(xpc_activate_mq_uv);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user