sgi-xp: replace AMO_t typedef by struct amo

Replace the AMO_t typedef by a direct reference to 'struct amo'.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 101 insertions, 96 deletions

diff --git a/drivers/misc/sgi-xp/xp_sn2.c b/drivers/misc/sgi-xp/xp_sn2.c
index 3d553fa73f4d..1fcfdebca2c5 100644
--- a/drivers/misc/sgi-xp/xp_sn2.c
+++ b/drivers/misc/sgi-xp/xp_sn2.c
@@ -32,7 +32,7 @@ EXPORT_SYMBOL_GPL(xp_nofault_PIOR_target);
  * If the PIO read times out, the MCA handler will consume the error and
  * return to a kernel-provided instruction to indicate an error. This PIO read
  * exists because it is guaranteed to timeout if the destination is down
- * (AMO operations do not timeout on at least some CPUs on Shubs <= v1.2,
+ * (amo operations do not timeout on at least some CPUs on Shubs <= v1.2,
  * which unfortunately we have to work around).
  */
 static enum xp_retval
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index 26a1725f68ad..da2680892dfa 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -38,8 +38,8 @@
 /*
  * The next macros define word or bit representations for given
  * C-brick nasid in either the SAL provided bit array representing
- * nasids in the partition/machine or the AMO_t array used for
- * inter-partition initiation communications.
+ * nasids in the partition/machine or the array of amo structures used
+ * for inter-partition initiation communications.
  *
  * For SN2 machines, C-Bricks are alway even numbered NASIDs.  As
  * such, some space will be saved by insisting that nasid information
@@ -144,8 +144,8 @@ struct xpc_vars_sn2 {
         int activate_IRQ_nasid;
         int activate_IRQ_phys_cpuid;
         u64 vars_part_pa;
-        u64 amos_page_pa;       /* paddr of page of AMOs from MSPEC driver */
-        AMO_t *amos_page;       /* vaddr of page of AMOs from MSPEC driver */
+        u64 amos_page_pa;       /* paddr of page of amos from MSPEC driver */
+        struct amo *amos_page;  /* vaddr of page of amos from MSPEC driver */
 };
 
 #define XPC_V_VERSION _XPC_VERSION(3, 1)    /* version 3.1 of the cross vars */
@@ -153,17 +153,17 @@ struct xpc_vars_sn2 {
 /*
  * The following pertains to ia64-sn2 only.
  *
- * Memory for XPC's AMO variables is allocated by the MSPEC driver. These
+ * Memory for XPC's amo variables is allocated by the MSPEC driver. These
  * pages are located in the lowest granule. The lowest granule uses 4k pages
  * for cached references and an alternate TLB handler to never provide a
  * cacheable mapping for the entire region. This will prevent speculative
  * reading of cached copies of our lines from being issued which will cause
  * a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64
- * AMO variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
- * NOTIFY IRQs, 128 AMO variables (based on XP_NASID_MASK_WORDS) to identify
- * the senders of ACTIVATE IRQs, 1 AMO variable to identify which remote
+ * amo variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
+ * NOTIFY IRQs, 128 amo variables (based on XP_NASID_MASK_WORDS) to identify
+ * the senders of ACTIVATE IRQs, 1 amo variable to identify which remote
  * partitions (i.e., XPCs) consider themselves currently engaged with the
- * local XPC and 1 AMO variable to request partition deactivation.
+ * local XPC and 1 amo variable to request partition deactivation.
  */
 #define XPC_NOTIFY_IRQ_AMOS     0
 #define XPC_ACTIVATE_IRQ_AMOS   (XPC_NOTIFY_IRQ_AMOS + XP_MAX_NPARTITIONS_SN2)
@@ -186,7 +186,7 @@ struct xpc_vars_part_sn2 {
         u64 openclose_args_pa;  /* physical address of open and close args */
         u64 GPs_pa;             /* physical address of Get/Put values */
 
-        u64 chctl_amo_pa;       /* physical address of chctl flags' AMO_t */
+        u64 chctl_amo_pa;       /* physical address of chctl flags' amo */
 
         int notify_IRQ_nasid;   /* nasid of where to send notify IRQs */
         int notify_IRQ_phys_cpuid;      /* CPUID of where to send notify IRQs */
@@ -547,8 +547,8 @@ struct xpc_partition_sn2 {
         int notify_IRQ_phys_cpuid;      /* CPUID of where to send notify IRQs */
         char notify_IRQ_owner[8];       /* notify IRQ's owner's name */
 
-        AMO_t *remote_chctl_amo_va; /* address of remote chctl flags' AMO_t */
-        AMO_t *local_chctl_amo_va;      /* address of chctl flags' AMO_t */
+        struct amo *remote_chctl_amo_va; /* addr of remote chctl flags' amo */
+        struct amo *local_chctl_amo_va; /* address of chctl flags' amo */
 
         struct timer_list dropped_notify_IRQ_timer;     /* dropped IRQ timer */
 };
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 43f5b686ecf3..2934b4473001 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -26,16 +26,16 @@
  *      Caveats:
  *
  *        . Currently on sn2, we have no way to determine which nasid an IRQ
- *          came from. Thus, xpc_send_IRQ_sn2() does a remote AMO write
- *          followed by an IPI. The AMO indicates where data is to be pulled
- *          from, so after the IPI arrives, the remote partition checks the AMO
- *          word. The IPI can actually arrive before the AMO however, so other
- *          code must periodically check for this case. Also, remote AMO
+ *          came from. Thus, xpc_send_IRQ_sn2() does a remote amo write
+ *          followed by an IPI. The amo indicates where data is to be pulled
+ *          from, so after the IPI arrives, the remote partition checks the amo
+ *          word. The IPI can actually arrive before the amo however, so other
+ *          code must periodically check for this case. Also, remote amo
  *          operations do not reliably time out. Thus we do a remote PIO read
  *          solely to know whether the remote partition is down and whether we
  *          should stop sending IPIs to it. This remote PIO read operation is
  *          set up in a special nofault region so SAL knows to ignore (and
- *          cleanup) any errors due to the remote AMO write, PIO read, and/or
+ *          cleanup) any errors due to the remote amo write, PIO read, and/or
  *          PIO write operations.
  *
  *          If/when new hardware solves this IPI problem, we should abandon
@@ -302,7 +302,7 @@ xpc_hb_checker(void *ignore)
 
                         /*
                          * We need to periodically recheck to ensure no
-                         * IRQ/AMO pairs have been missed.  That check
+                         * IRQ/amo pairs have been missed.  That check
                          * must always reset xpc_hb_check_timeout.
                          */
                         force_IRQ = 1;
@@ -1034,7 +1034,7 @@ xpc_init(void)
         if (is_shub()) {
                 /*
                  * The ia64-sn2 architecture supports at most 64 partitions.
-                 * And the inability to unregister remote AMOs restricts us
+                 * And the inability to unregister remote amos restricts us
                  * further to only support exactly 64 partitions on this
                  * architecture, no less.
                  */
diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c
index 0fef7d86a5a2..01dd40ec2a89 100644
--- a/drivers/misc/sgi-xp/xpc_sn2.c
+++ b/drivers/misc/sgi-xp/xpc_sn2.c
@@ -111,13 +111,14 @@ xpc_disallow_IPI_ops_sn2(void)
  */
 
 static u64
-xpc_receive_IRQ_amo_sn2(AMO_t *amo)
+xpc_receive_IRQ_amo_sn2(struct amo *amo)
 {
         return FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_CLEAR);
 }
 
 static enum xp_retval
-xpc_send_IRQ_sn2(AMO_t *amo, u64 flag, int nasid, int phys_cpuid, int vector)
+xpc_send_IRQ_sn2(struct amo *amo, u64 flag, int nasid, int phys_cpuid,
+                 int vector)
 {
         int ret = 0;
         unsigned long irq_flags;
@@ -131,7 +132,7 @@ xpc_send_IRQ_sn2(AMO_t *amo, u64 flag, int nasid, int phys_cpuid, int vector)
          * We must always use the nofault function regardless of whether we
          * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
          * didn't, we'd never know that the other partition is down and would
-         * keep sending IRQs and AMOs to it until the heartbeat times out.
+         * keep sending IRQs and amos to it until the heartbeat times out.
          */
         ret = xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->variable),
                                                      xp_nofault_PIOR_target));
@@ -141,12 +142,12 @@ xpc_send_IRQ_sn2(AMO_t *amo, u64 flag, int nasid, int phys_cpuid, int vector)
         return ((ret == 0) ? xpSuccess : xpPioReadError);
 }
 
-static AMO_t *
+static struct amo *
 xpc_init_IRQ_amo_sn2(int index)
 {
-        AMO_t *amo = xpc_vars->amos_page + index;
+        struct amo *amo = xpc_vars->amos_page + index;
 
-        (void)xpc_receive_IRQ_amo_sn2(amo);     /* clear AMO variable */
+        (void)xpc_receive_IRQ_amo_sn2(amo);     /* clear amo variable */
         return amo;
 }
 
@@ -166,7 +167,7 @@ xpc_handle_activate_IRQ_sn2(int irq, void *dev_id)
 }
 
 /*
- * Flag the appropriate AMO variable and send an IRQ to the specified node.
+ * Flag the appropriate amo variable and send an IRQ to the specified node.
  */
 static void
 xpc_send_activate_IRQ_sn2(u64 amos_page_pa, int from_nasid, int to_nasid,
@@ -174,8 +175,9 @@ xpc_send_activate_IRQ_sn2(u64 amos_page_pa, int from_nasid, int to_nasid,
 {
         int w_index = XPC_NASID_W_INDEX(from_nasid);
         int b_index = XPC_NASID_B_INDEX(from_nasid);
-        AMO_t *amos = (AMO_t *)__va(amos_page_pa +
-                                    (XPC_ACTIVATE_IRQ_AMOS * sizeof(AMO_t)));
+        struct amo *amos = (struct amo *)__va(amos_page_pa +
+                                              (XPC_ACTIVATE_IRQ_AMOS *
+                                              sizeof(struct amo)));
 
         (void)xpc_send_IRQ_sn2(&amos[w_index], (1UL << b_index), to_nasid,
                                to_phys_cpuid, SGI_XPC_ACTIVATE);
@@ -186,8 +188,9 @@ xpc_send_local_activate_IRQ_sn2(int from_nasid)
 {
         int w_index = XPC_NASID_W_INDEX(from_nasid);
         int b_index = XPC_NASID_B_INDEX(from_nasid);
-        AMO_t *amos = (AMO_t *)__va(xpc_vars->amos_page_pa +
-                                    (XPC_ACTIVATE_IRQ_AMOS * sizeof(AMO_t)));
+        struct amo *amos = (struct amo *)__va(xpc_vars->amos_page_pa +
+                                              (XPC_ACTIVATE_IRQ_AMOS *
+                                              sizeof(struct amo)));
 
         /* fake the sending and receipt of an activate IRQ from remote nasid */
         FETCHOP_STORE_OP(TO_AMO((u64)&amos[w_index].variable), FETCHOP_OR,
@@ -227,7 +230,7 @@ xpc_check_for_sent_chctl_flags_sn2(struct xpc_partition *part)
 /*
  * Handle the receipt of a SGI_XPC_NOTIFY IRQ by seeing whether the specified
  * partition actually sent it. Since SGI_XPC_NOTIFY IRQs may be shared by more
- * than one partition, we use an AMO_t structure per partition to indicate
+ * than one partition, we use an amo structure per partition to indicate
  * whether a partition has sent an IRQ or not.  If it has, then wake up the
  * associated kthread to handle it.
  *
@@ -391,20 +394,20 @@ static void
 xpc_indicate_partition_engaged_sn2(struct xpc_partition *part)
 {
         unsigned long irq_flags;
-        AMO_t *amo = (AMO_t *)__va(part->sn.sn2.remote_amos_page_pa +
-                                   (XPC_ENGAGED_PARTITIONS_AMO *
-                                    sizeof(AMO_t)));
+        struct amo *amo = (struct amo *)__va(part->sn.sn2.remote_amos_page_pa +
+                                             (XPC_ENGAGED_PARTITIONS_AMO *
+                                             sizeof(struct amo)));
 
         local_irq_save(irq_flags);
 
-        /* set bit corresponding to our partid in remote partition's AMO */
+        /* set bit corresponding to our partid in remote partition's amo */
         FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
                          (1UL << sn_partition_id));
         /*
          * We must always use the nofault function regardless of whether we
          * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
          * didn't, we'd never know that the other partition is down and would
-         * keep sending IRQs and AMOs to it until the heartbeat times out.
+         * keep sending IRQs and amos to it until the heartbeat times out.
          */
         (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
                                                                variable),
@@ -418,20 +421,20 @@ xpc_indicate_partition_disengaged_sn2(struct xpc_partition *part)
 {
         struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
         unsigned long irq_flags;
-        AMO_t *amo = (AMO_t *)__va(part_sn2->remote_amos_page_pa +
-                                   (XPC_ENGAGED_PARTITIONS_AMO *
-                                    sizeof(AMO_t)));
+        struct amo *amo = (struct amo *)__va(part_sn2->remote_amos_page_pa +
+                                             (XPC_ENGAGED_PARTITIONS_AMO *
+                                             sizeof(struct amo)));
 
         local_irq_save(irq_flags);
 
-        /* clear bit corresponding to our partid in remote partition's AMO */
+        /* clear bit corresponding to our partid in remote partition's amo */
         FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
                          ~(1UL << sn_partition_id));
         /*
          * We must always use the nofault function regardless of whether we
          * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
          * didn't, we'd never know that the other partition is down and would
-         * keep sending IRQs and AMOs to it until the heartbeat times out.
+         * keep sending IRQs and amos to it until the heartbeat times out.
          */
         (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
                                                                variable),
@@ -441,7 +444,7 @@ xpc_indicate_partition_disengaged_sn2(struct xpc_partition *part)
 
         /*
          * Send activate IRQ to get other side to see that we've cleared our
-         * bit in their engaged partitions AMO.
+         * bit in their engaged partitions amo.
          */
         xpc_send_activate_IRQ_sn2(part_sn2->remote_amos_page_pa,
                                   cnodeid_to_nasid(0),
@@ -452,9 +455,9 @@ xpc_indicate_partition_disengaged_sn2(struct xpc_partition *part)
 static int
 xpc_partition_engaged_sn2(short partid)
 {
-        AMO_t *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
+        struct amo *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
 
-        /* our partition's AMO variable ANDed with partid mask */
+        /* our partition's amo variable ANDed with partid mask */
         return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
                 (1UL << partid)) != 0;
 }
@@ -462,18 +465,18 @@ xpc_partition_engaged_sn2(short partid)
 static int
 xpc_any_partition_engaged_sn2(void)
 {
-        AMO_t *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
+        struct amo *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
 
-        /* our partition's AMO variable */
+        /* our partition's amo variable */
         return FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) != 0;
 }
 
 static void
 xpc_assume_partition_disengaged_sn2(short partid)
 {
-        AMO_t *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
+        struct amo *amo = xpc_vars->amos_page + XPC_ENGAGED_PARTITIONS_AMO;
 
-        /* clear bit(s) based on partid mask in our partition's AMO */
+        /* clear bit(s) based on partid mask in our partition's amo */
         FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
                          ~(1UL << partid));
 }
@@ -482,10 +485,10 @@ xpc_assume_partition_disengaged_sn2(short partid)
 static u64 xpc_prot_vec_sn2[MAX_NUMNODES];
 
 /*
- * Change protections to allow AMO operations on non-Shub 1.1 systems.
+ * Change protections to allow amo operations on non-Shub 1.1 systems.
  */
 static enum xp_retval
-xpc_allow_AMO_ops_sn2(AMO_t *amos_page)
+xpc_allow_amo_ops_sn2(struct amo *amos_page)
 {
         u64 nasid_array = 0;
         int ret;
@@ -493,7 +496,7 @@ xpc_allow_AMO_ops_sn2(AMO_t *amos_page)
         /*
          * On SHUB 1.1, we cannot call sn_change_memprotect() since the BIST
          * collides with memory operations. On those systems we call
-         * xpc_allow_AMO_ops_shub_wars_1_1_sn2() instead.
+         * xpc_allow_amo_ops_shub_wars_1_1_sn2() instead.
          */
         if (!enable_shub_wars_1_1()) {
                 ret = sn_change_memprotect(ia64_tpa((u64)amos_page), PAGE_SIZE,
@@ -506,10 +509,10 @@ xpc_allow_AMO_ops_sn2(AMO_t *amos_page)
 }
 
 /*
- * Change protections to allow AMO operations on Shub 1.1 systems.
+ * Change protections to allow amo operations on Shub 1.1 systems.
  */
 static void
-xpc_allow_AMO_ops_shub_wars_1_1_sn2(void)
+xpc_allow_amo_ops_shub_wars_1_1_sn2(void)
 {
         int node;
         int nasid;
@@ -536,7 +539,7 @@ xpc_allow_AMO_ops_shub_wars_1_1_sn2(void)
 static enum xp_retval
 xpc_rsvd_page_init_sn2(struct xpc_rsvd_page *rp)
 {
-        AMO_t *amos_page;
+        struct amo *amos_page;
         int i;
         int ret;
 
@@ -549,32 +552,32 @@ xpc_rsvd_page_init_sn2(struct xpc_rsvd_page *rp)
                                                      XPC_RP_VARS_SIZE);
 
         /*
-         * Before clearing xpc_vars, see if a page of AMOs had been previously
+         * Before clearing xpc_vars, see if a page of amos had been previously
          * allocated. If not we'll need to allocate one and set permissions
-         * so that cross-partition AMOs are allowed.
+         * so that cross-partition amos are allowed.
          *
-         * The allocated AMO page needs MCA reporting to remain disabled after
+         * The allocated amo page needs MCA reporting to remain disabled after
          * XPC has unloaded.  To make this work, we keep a copy of the pointer
          * to this page (i.e., amos_page) in the struct xpc_vars structure,
          * which is pointed to by the reserved page, and re-use that saved copy
-         * on subsequent loads of XPC. This AMO page is never freed, and its
+         * on subsequent loads of XPC. This amo page is never freed, and its
          * memory protections are never restricted.
          */
         amos_page = xpc_vars->amos_page;
         if (amos_page == NULL) {
-                amos_page = (AMO_t *)TO_AMO(uncached_alloc_page(0, 1));
+                amos_page = (struct amo *)TO_AMO(uncached_alloc_page(0, 1));
                 if (amos_page == NULL) {
-                        dev_err(xpc_part, "can't allocate page of AMOs\n");
+                        dev_err(xpc_part, "can't allocate page of amos\n");
                         return xpNoMemory;
                 }
 
                 /*
-                 * Open up AMO-R/W to cpu.  This is done on Shub 1.1 systems
-                 * when xpc_allow_AMO_ops_shub_wars_1_1_sn2() is called.
+                 * Open up amo-R/W to cpu.  This is done on Shub 1.1 systems
+                 * when xpc_allow_amo_ops_shub_wars_1_1_sn2() is called.
                  */
-                ret = xpc_allow_AMO_ops_sn2(amos_page);
+                ret = xpc_allow_amo_ops_sn2(amos_page);
                 if (ret != xpSuccess) {
-                        dev_err(xpc_part, "can't allow AMO operations\n");
+                        dev_err(xpc_part, "can't allow amo operations\n");
                         uncached_free_page(__IA64_UNCACHED_OFFSET |
                                            TO_PHYS((u64)amos_page), 1);
                         return ret;
@@ -595,11 +598,11 @@ xpc_rsvd_page_init_sn2(struct xpc_rsvd_page *rp)
         memset((u64 *)xpc_vars_part, 0, sizeof(struct xpc_vars_part_sn2) *
                xp_max_npartitions);
 
-        /* initialize the activate IRQ related AMO variables */
+        /* initialize the activate IRQ related amo variables */
         for (i = 0; i < xp_nasid_mask_words; i++)
                 (void)xpc_init_IRQ_amo_sn2(XPC_ACTIVATE_IRQ_AMOS + i);
 
-        /* initialize the engaged remote partitions related AMO variables */
+        /* initialize the engaged remote partitions related amo variables */
         (void)xpc_init_IRQ_amo_sn2(XPC_ENGAGED_PARTITIONS_AMO);
         (void)xpc_init_IRQ_amo_sn2(XPC_DEACTIVATE_REQUEST_AMO);
 
@@ -745,19 +748,20 @@ xpc_request_partition_deactivation_sn2(struct xpc_partition *part)
 {
         struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2;
         unsigned long irq_flags;
-        AMO_t *amo = (AMO_t *)__va(part_sn2->remote_amos_page_pa +
-                                  (XPC_DEACTIVATE_REQUEST_AMO * sizeof(AMO_t)));
+        struct amo *amo = (struct amo *)__va(part_sn2->remote_amos_page_pa +
+                                             (XPC_DEACTIVATE_REQUEST_AMO *
+                                             sizeof(struct amo)));
 
         local_irq_save(irq_flags);
 
-        /* set bit corresponding to our partid in remote partition's AMO */
+        /* set bit corresponding to our partid in remote partition's amo */
         FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_OR,
                          (1UL << sn_partition_id));
         /*
          * We must always use the nofault function regardless of whether we
          * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
          * didn't, we'd never know that the other partition is down and would
-         * keep sending IRQs and AMOs to it until the heartbeat times out.
+         * keep sending IRQs and amos to it until the heartbeat times out.
          */
         (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
                                                                variable),
@@ -767,7 +771,7 @@ xpc_request_partition_deactivation_sn2(struct xpc_partition *part)
 
         /*
          * Send activate IRQ to get other side to see that we've set our
-         * bit in their deactivate request AMO.
+         * bit in their deactivate request amo.
          */
         xpc_send_activate_IRQ_sn2(part_sn2->remote_amos_page_pa,
                                   cnodeid_to_nasid(0),
@@ -779,19 +783,20 @@ static void
 xpc_cancel_partition_deactivation_request_sn2(struct xpc_partition *part)
 {
         unsigned long irq_flags;
-        AMO_t *amo = (AMO_t *)__va(part->sn.sn2.remote_amos_page_pa +
-                                  (XPC_DEACTIVATE_REQUEST_AMO * sizeof(AMO_t)));
+        struct amo *amo = (struct amo *)__va(part->sn.sn2.remote_amos_page_pa +
+                                             (XPC_DEACTIVATE_REQUEST_AMO *
+                                             sizeof(struct amo)));
 
         local_irq_save(irq_flags);
 
-        /* clear bit corresponding to our partid in remote partition's AMO */
+        /* clear bit corresponding to our partid in remote partition's amo */
         FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND,
                          ~(1UL << sn_partition_id));
         /*
          * We must always use the nofault function regardless of whether we
          * are on a Shub 1.1 system or a Shub 1.2 slice 0xc processor. If we
          * didn't, we'd never know that the other partition is down and would
-         * keep sending IRQs and AMOs to it until the heartbeat times out.
+         * keep sending IRQs and amos to it until the heartbeat times out.
          */
         (void)xp_nofault_PIOR((u64 *)GLOBAL_MMR_ADDR(NASID_GET(&amo->
                                                                variable),
@@ -803,9 +808,9 @@ xpc_cancel_partition_deactivation_request_sn2(struct xpc_partition *part)
 static int
 xpc_partition_deactivation_requested_sn2(short partid)
 {
-        AMO_t *amo = xpc_vars->amos_page + XPC_DEACTIVATE_REQUEST_AMO;
+        struct amo *amo = xpc_vars->amos_page + XPC_DEACTIVATE_REQUEST_AMO;
 
-        /* our partition's AMO variable ANDed with partid mask */
+        /* our partition's amo variable ANDed with partid mask */
         return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) &
                 (1UL << partid)) != 0;
 }
@@ -976,7 +981,7 @@ xpc_identify_activate_IRQ_req_sn2(int nasid)
 }
 
 /*
- * Loop through the activation AMO variables and process any bits
+ * Loop through the activation amo variables and process any bits
  * which are set.  Each bit indicates a nasid sending a partition
  * activation or deactivation request.
  *
@@ -989,11 +994,11 @@ xpc_identify_activate_IRQ_sender_sn2(void)
         u64 nasid_mask;
         u64 nasid;              /* remote nasid */
         int n_IRQs_detected = 0;
-        AMO_t *act_amos;
+        struct amo *act_amos;
 
         act_amos = xpc_vars->amos_page + XPC_ACTIVATE_IRQ_AMOS;
 
-        /* scan through act AMO variable looking for non-zero entries */
+        /* scan through act amo variable looking for non-zero entries */
         for (word = 0; word < xp_nasid_mask_words; word++) {
 
                 if (xpc_exiting)
@@ -1005,7 +1010,7 @@ xpc_identify_activate_IRQ_sender_sn2(void)
                         continue;
                 }
 
-                dev_dbg(xpc_part, "AMO[%d] gave back 0x%lx\n", word,
+                dev_dbg(xpc_part, "amo[%d] gave back 0x%lx\n", word,
                         nasid_mask);
 
                 /*
@@ -1038,7 +1043,7 @@ xpc_process_activate_IRQ_rcvd_sn2(int n_IRQs_expected)
 
         n_IRQs_detected = xpc_identify_activate_IRQ_sender_sn2();
         if (n_IRQs_detected < n_IRQs_expected) {
-                /* retry once to help avoid missing AMO */
+                /* retry once to help avoid missing amo */
                 (void)xpc_identify_activate_IRQ_sender_sn2();
         }
 }
@@ -1386,7 +1391,7 @@ xpc_pull_remote_vars_part_sn2(struct xpc_partition *part)
                 part_sn2->remote_openclose_args_pa =
                     pulled_entry->openclose_args_pa;
                 part_sn2->remote_chctl_amo_va =
-                    (AMO_t *)__va(pulled_entry->chctl_amo_pa);
+                    (struct amo *)__va(pulled_entry->chctl_amo_pa);
                 part_sn2->notify_IRQ_nasid = pulled_entry->notify_IRQ_nasid;
                 part_sn2->notify_IRQ_phys_cpuid =
                     pulled_entry->notify_IRQ_phys_cpuid;
@@ -1417,7 +1422,7 @@ xpc_make_first_contact_sn2(struct xpc_partition *part)
         enum xp_retval ret;
 
         /*
-         * Register the remote partition's AMOs with SAL so it can handle
+         * Register the remote partition's amos with SAL so it can handle
          * and cleanup errors within that address range should the remote
          * partition go down. We don't unregister this range because it is
          * difficult to tell when outstanding writes to the remote partition
@@ -2192,9 +2197,9 @@ xpc_init_sn2(void)
         xpc_send_msg = xpc_send_msg_sn2;
         xpc_received_msg = xpc_received_msg_sn2;
 
-        /* open up protections for IPI and [potentially] AMO operations */
+        /* open up protections for IPI and [potentially] amo operations */
         xpc_allow_IPI_ops_sn2();
-        xpc_allow_AMO_ops_shub_wars_1_1_sn2();
+        xpc_allow_amo_ops_shub_wars_1_1_sn2();
 
         /*
          * This is safe to do before the xpc_hb_checker thread has started
diff --git a/include/asm-ia64/sn/mspec.h b/include/asm-ia64/sn/mspec.h
index dbe13c6121a8..c1d3c50c3223 100644
--- a/include/asm-ia64/sn/mspec.h
+++ b/include/asm-ia64/sn/mspec.h
@@ -4,7 +4,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2001-2004 Silicon Graphics, Inc.  All rights reserved.
+ * Copyright (c) 2001-2008 Silicon Graphics, Inc.  All rights reserved.
  */
 
 #ifndef _ASM_IA64_SN_MSPEC_H
@@ -32,26 +32,26 @@
 #ifdef __KERNEL__
 
 /*
- * Each Atomic Memory Operation (AMO formerly known as fetchop)
+ * Each Atomic Memory Operation (amo, formerly known as fetchop)
  * variable is 64 bytes long.  The first 8 bytes are used.  The
  * remaining 56 bytes are unaddressable due to the operation taking
  * that portion of the address.
  *
- * NOTE: The AMO_t _MUST_ be placed in either the first or second half
- * of the cache line.  The cache line _MUST NOT_ be used for anything
- * other than additional AMO_t entries.  This is because there are two
+ * NOTE: The amo structure _MUST_ be placed in either the first or second
+ * half of the cache line.  The cache line _MUST NOT_ be used for anything
+ * other than additional amo entries.  This is because there are two
  * addresses which reference the same physical cache line.  One will
  * be a cached entry with the memory type bits all set.  This address
- * may be loaded into processor cache.  The AMO_t will be referenced
+ * may be loaded into processor cache.  The amo will be referenced
  * uncached via the memory special memory type.  If any portion of the
  * cached cache-line is modified, when that line is flushed, it will
  * overwrite the uncached value in physical memory and lead to
  * inconsistency.
  */
-typedef struct {
+struct amo {
         u64 variable;
         u64 unused[7];
-} AMO_t;
+};
 
 
 #endif /* __KERNEL__ */