diff options
author | Dean Nelson <dcn@sgi.com> | 2008-07-30 07:34:14 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-30 18:41:50 +0200 |
commit | 04de741885bc7565a28150e82c56a56e544440e6 (patch) | |
tree | 7c955e1d9dbe4c7d319818f48e22ef85113b2c2f /drivers | |
parent | sgi-xp: eliminate '>>>' in comments (diff) | |
download | linux-04de741885bc7565a28150e82c56a56e544440e6.tar.xz linux-04de741885bc7565a28150e82c56a56e544440e6.zip |
sgi-xp: use standard bitops macros and functions
Change sgi-xp to use the standard bitops macros and functions instead of
trying to invent its own mechanism.
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>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/misc/sgi-xp/xp.h | 3 | ||||
-rw-r--r-- | drivers/misc/sgi-xp/xpc.h | 43 | ||||
-rw-r--r-- | drivers/misc/sgi-xp/xpc_partition.c | 43 | ||||
-rw-r--r-- | drivers/misc/sgi-xp/xpc_sn2.c | 73 |
4 files changed, 76 insertions, 86 deletions
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h index 0ca81f16646f..3054fae8b023 100644 --- a/drivers/misc/sgi-xp/xp.h +++ b/drivers/misc/sgi-xp/xp.h @@ -21,9 +21,6 @@ #include <asm/sn/arch.h> #endif -/* ??? Add this #define to some linux header file some day? */ -#define BYTES_PER_WORD sizeof(void *) - #ifdef USE_DBUG_ON #define DBUG_ON(condition) BUG_ON(condition) #else diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index 0f516c3e3e61..0907934cdd8f 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -35,23 +35,7 @@ #define XPC_VERSION_MAJOR(_v) ((_v) >> 4) #define XPC_VERSION_MINOR(_v) ((_v) & 0xf) -/* - * 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 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 - * passed from SAL always be packed for C-Bricks and the - * cross-partition interrupts use the same packing scheme. - */ -#define XPC_NASID_W_INDEX(_n) (((_n) / 64) / 2) -#define XPC_NASID_B_INDEX(_n) (((_n) / 2) & (64 - 1)) -#define XPC_NASID_IN_ARRAY(_n, _p) ((_p)[XPC_NASID_W_INDEX(_n)] & \ - (1UL << XPC_NASID_B_INDEX(_n))) -#define XPC_NASID_FROM_W_B(_w, _b) (((_w) * 64 + (_b)) * 2) - +/* define frequency of the heartbeat and frequency how often it's checked */ #define XPC_HB_DEFAULT_INTERVAL 5 /* incr HB every x secs */ #define XPC_HB_CHECK_DEFAULT_INTERVAL 20 /* check HB every x secs */ @@ -86,11 +70,13 @@ * the actual nasids in the entire machine (mach_nasids). We're only * interested in the even numbered nasids (which contain the processors * and/or memory), so we only need half as many bits to represent the - * nasids. The part_nasids mask is located starting at the first cacheline - * following the reserved page header. The mach_nasids mask follows right - * after the part_nasids mask. The size in bytes of each mask is reflected - * by the reserved page header field 'SAL_nasids_size'. (Local partition's - * mask pointers are xpc_part_nasids and xpc_mach_nasids.) + * nasids. When mapping nasid to bit in a mask (or bit to nasid) be sure + * to either divide or multiply by 2. The part_nasids mask is located + * starting at the first cacheline following the reserved page header. The + * mach_nasids mask follows right after the part_nasids mask. The size in + * bytes of each mask is reflected by the reserved page header field + * 'SAL_nasids_size'. (Local partition's mask pointers are xpc_part_nasids + * and xpc_mach_nasids.) * * vars (ia64-sn2 only) * vars part (ia64-sn2 only) @@ -194,10 +180,11 @@ struct xpc_vars_part_sn2 { #define XPC_RP_VARS_SIZE L1_CACHE_ALIGN(sizeof(struct xpc_vars_sn2)) #define XPC_RP_PART_NASIDS(_rp) ((u64 *)((u8 *)(_rp) + XPC_RP_HEADER_SIZE)) -#define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + xpc_nasid_mask_words) +#define XPC_RP_MACH_NASIDS(_rp) (XPC_RP_PART_NASIDS(_rp) + \ + xpc_nasid_mask_nlongs) #define XPC_RP_VARS(_rp) ((struct xpc_vars_sn2 *) \ (XPC_RP_MACH_NASIDS(_rp) + \ - xpc_nasid_mask_words)) + xpc_nasid_mask_nlongs)) /* * Functions registered by add_timer() or called by kernel_thread() only @@ -695,9 +682,9 @@ extern void xpc_exit_uv(void); /* found in xpc_partition.c */ extern int xpc_exiting; -extern int xpc_nasid_mask_words; +extern int xpc_nasid_mask_nlongs; extern struct xpc_rsvd_page *xpc_rsvd_page; -extern u64 *xpc_mach_nasids; +extern unsigned long *xpc_mach_nasids; extern struct xpc_partition *xpc_partitions; extern void *xpc_kmalloc_cacheline_aligned(size_t, gfp_t, void **); extern struct xpc_rsvd_page *xpc_setup_rsvd_page(void); @@ -706,8 +693,8 @@ extern int xpc_partition_disengaged(struct xpc_partition *); extern enum xp_retval xpc_mark_partition_active(struct xpc_partition *); extern void xpc_mark_partition_inactive(struct xpc_partition *); extern void xpc_discovery(void); -extern enum xp_retval xpc_get_remote_rp(int, u64 *, struct xpc_rsvd_page *, - u64 *); +extern enum xp_retval xpc_get_remote_rp(int, unsigned long *, + struct xpc_rsvd_page *, u64 *); extern void xpc_deactivate_partition(const int, struct xpc_partition *, enum xp_retval); extern enum xp_retval xpc_initiate_partid_to_nasids(short, void *); diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c index 73a92957b800..ca6784f55970 100644 --- a/drivers/misc/sgi-xp/xpc_partition.c +++ b/drivers/misc/sgi-xp/xpc_partition.c @@ -31,11 +31,11 @@ int xpc_exiting; /* this partition's reserved page pointers */ struct xpc_rsvd_page *xpc_rsvd_page; -static u64 *xpc_part_nasids; -u64 *xpc_mach_nasids; +static unsigned long *xpc_part_nasids; +unsigned long *xpc_mach_nasids; -static int xpc_sizeof_nasid_mask; /* actual size in bytes of nasid mask */ -int xpc_nasid_mask_words; /* actual size in words of nasid mask */ +static int xpc_nasid_mask_nbytes; /* #of bytes in nasid mask */ +int xpc_nasid_mask_nlongs; /* #of longs in nasid mask */ struct xpc_partition *xpc_partitions; @@ -167,9 +167,9 @@ xpc_setup_rsvd_page(void) /* SAL_version 1 didn't set the nasids_size field */ rp->SAL_nasids_size = 128; } - xpc_sizeof_nasid_mask = rp->SAL_nasids_size; - xpc_nasid_mask_words = DIV_ROUND_UP(xpc_sizeof_nasid_mask, - BYTES_PER_WORD); + xpc_nasid_mask_nbytes = rp->SAL_nasids_size; + xpc_nasid_mask_nlongs = BITS_TO_LONGS(rp->SAL_nasids_size * + BITS_PER_BYTE); /* setup the pointers to the various items in the reserved page */ xpc_part_nasids = XPC_RP_PART_NASIDS(rp); @@ -199,10 +199,10 @@ xpc_setup_rsvd_page(void) * part_nasids mask. */ enum xp_retval -xpc_get_remote_rp(int nasid, u64 *discovered_nasids, +xpc_get_remote_rp(int nasid, unsigned long *discovered_nasids, struct xpc_rsvd_page *remote_rp, u64 *remote_rp_pa) { - int i; + int l; enum xp_retval ret; /* get the reserved page's physical address */ @@ -213,15 +213,16 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids, /* pull over the reserved page header and part_nasids mask */ ret = xp_remote_memcpy(remote_rp, (void *)*remote_rp_pa, - XPC_RP_HEADER_SIZE + xpc_sizeof_nasid_mask); + XPC_RP_HEADER_SIZE + xpc_nasid_mask_nbytes); if (ret != xpSuccess) return ret; if (discovered_nasids != NULL) { - u64 *remote_part_nasids = XPC_RP_PART_NASIDS(remote_rp); + unsigned long *remote_part_nasids = + XPC_RP_PART_NASIDS(remote_rp); - for (i = 0; i < xpc_nasid_mask_words; i++) - discovered_nasids[i] |= remote_part_nasids[i]; + for (l = 0; l < xpc_nasid_mask_nlongs; l++) + discovered_nasids[l] |= remote_part_nasids[l]; } /* see if the reserved page has been set up by XPC */ @@ -401,16 +402,16 @@ xpc_discovery(void) int max_regions; int nasid; struct xpc_rsvd_page *rp; - u64 *discovered_nasids; + unsigned long *discovered_nasids; enum xp_retval ret; remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE + - xpc_sizeof_nasid_mask, + xpc_nasid_mask_nbytes, GFP_KERNEL, &remote_rp_base); if (remote_rp == NULL) return; - discovered_nasids = kzalloc(sizeof(u64) * xpc_nasid_mask_words, + discovered_nasids = kzalloc(sizeof(long) * xpc_nasid_mask_nlongs, GFP_KERNEL); if (discovered_nasids == NULL) { kfree(remote_rp_base); @@ -453,21 +454,21 @@ xpc_discovery(void) dev_dbg(xpc_part, "checking nasid %d\n", nasid); - if (XPC_NASID_IN_ARRAY(nasid, xpc_part_nasids)) { + if (test_bit(nasid / 2, xpc_part_nasids)) { dev_dbg(xpc_part, "PROM indicates Nasid %d is " "part of the local partition; skipping " "region\n", nasid); break; } - if (!(XPC_NASID_IN_ARRAY(nasid, xpc_mach_nasids))) { + if (!(test_bit(nasid / 2, xpc_mach_nasids))) { dev_dbg(xpc_part, "PROM indicates Nasid %d was " "not on Numa-Link network at reset\n", nasid); continue; } - if (XPC_NASID_IN_ARRAY(nasid, discovered_nasids)) { + if (test_bit(nasid / 2, discovered_nasids)) { dev_dbg(xpc_part, "Nasid %d is part of a " "partition which was previously " "discovered\n", nasid); @@ -512,10 +513,10 @@ xpc_initiate_partid_to_nasids(short partid, void *nasid_mask) if (part->remote_rp_pa == 0) return xpPartitionDown; - memset(nasid_mask, 0, xpc_sizeof_nasid_mask); + memset(nasid_mask, 0, xpc_nasid_mask_nbytes); part_nasid_pa = (u64)XPC_RP_PART_NASIDS(part->remote_rp_pa); return xp_remote_memcpy(nasid_mask, (void *)part_nasid_pa, - xpc_sizeof_nasid_mask); + xpc_nasid_mask_nbytes); } diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c index e42c3038203c..f82889f60151 100644 --- a/drivers/misc/sgi-xp/xpc_sn2.c +++ b/drivers/misc/sgi-xp/xpc_sn2.c @@ -210,28 +210,26 @@ static void xpc_send_activate_IRQ_sn2(u64 amos_page_pa, int from_nasid, int to_nasid, int to_phys_cpuid) { - int w_index = XPC_NASID_W_INDEX(from_nasid); - int b_index = XPC_NASID_B_INDEX(from_nasid); struct amo *amos = (struct amo *)__va(amos_page_pa + (XPC_ACTIVATE_IRQ_AMOS_SN2 * sizeof(struct amo))); - (void)xpc_send_IRQ_sn2(&amos[w_index], (1UL << b_index), to_nasid, + (void)xpc_send_IRQ_sn2(&amos[BIT_WORD(from_nasid / 2)], + BIT_MASK(from_nasid / 2), to_nasid, to_phys_cpuid, SGI_XPC_ACTIVATE); } static void 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); struct amo *amos = (struct amo *)__va(xpc_vars_sn2->amos_page_pa + (XPC_ACTIVATE_IRQ_AMOS_SN2 * 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, - (1UL << b_index)); + FETCHOP_STORE_OP(TO_AMO((u64)&amos[BIT_WORD(from_nasid / 2)].variable), + FETCHOP_OR, BIT_MASK(from_nasid / 2)); + atomic_inc(&xpc_activate_IRQ_rcvd); wake_up_interruptible(&xpc_activate_IRQ_wq); } @@ -439,7 +437,8 @@ xpc_indicate_partition_engaged_sn2(struct xpc_partition *part) /* 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)); + BIT(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 @@ -466,7 +465,8 @@ xpc_indicate_partition_disengaged_sn2(struct xpc_partition *part) /* 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)); + ~BIT(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 @@ -497,7 +497,7 @@ xpc_partition_engaged_sn2(short partid) /* our partition's amo variable ANDed with partid mask */ return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) & - (1UL << partid)) != 0; + BIT(partid)) != 0; } static int @@ -518,7 +518,7 @@ xpc_assume_partition_disengaged_sn2(short partid) /* clear bit(s) based on partid mask in our partition's amo */ FETCHOP_STORE_OP(TO_AMO((u64)&amo->variable), FETCHOP_AND, - ~(1UL << partid)); + ~BIT(partid)); } /* original protection values for each node */ @@ -639,7 +639,7 @@ xpc_rsvd_page_init_sn2(struct xpc_rsvd_page *rp) xp_max_npartitions); /* initialize the activate IRQ related amo variables */ - for (i = 0; i < xpc_nasid_mask_words; i++) + for (i = 0; i < xpc_nasid_mask_nlongs; i++) (void)xpc_init_IRQ_amo_sn2(XPC_ACTIVATE_IRQ_AMOS_SN2 + i); /* initialize the engaged remote partitions related amo variables */ @@ -796,7 +796,8 @@ xpc_request_partition_deactivation_sn2(struct xpc_partition *part) /* 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)); + BIT(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 @@ -831,7 +832,8 @@ xpc_cancel_partition_deactivation_request_sn2(struct xpc_partition *part) /* 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)); + ~BIT(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 @@ -853,7 +855,7 @@ xpc_partition_deactivation_requested_sn2(short partid) /* our partition's amo variable ANDed with partid mask */ return (FETCHOP_LOAD_OP(TO_AMO((u64)&amo->variable), FETCHOP_LOAD) & - (1UL << partid)) != 0; + BIT(partid)) != 0; } /* @@ -1031,28 +1033,31 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) int xpc_identify_activate_IRQ_sender_sn2(void) { - int word, bit; - u64 nasid_mask; + int l; + int b; + unsigned long nasid_mask_long; u64 nasid; /* remote nasid */ int n_IRQs_detected = 0; struct amo *act_amos; act_amos = xpc_vars_sn2->amos_page + XPC_ACTIVATE_IRQ_AMOS_SN2; - /* scan through act amo variable looking for non-zero entries */ - for (word = 0; word < xpc_nasid_mask_words; word++) { + /* scan through activate amo variables looking for non-zero entries */ + for (l = 0; l < xpc_nasid_mask_nlongs; l++) { if (xpc_exiting) break; - nasid_mask = xpc_receive_IRQ_amo_sn2(&act_amos[word]); - if (nasid_mask == 0) { - /* no IRQs from nasids in this variable */ + nasid_mask_long = xpc_receive_IRQ_amo_sn2(&act_amos[l]); + + b = find_first_bit(&nasid_mask_long, BITS_PER_LONG); + if (b >= BITS_PER_LONG) { + /* no IRQs from nasids in this amo variable */ continue; } - dev_dbg(xpc_part, "amo[%d] gave back 0x%lx\n", word, - nasid_mask); + dev_dbg(xpc_part, "amo[%d] gave back 0x%lx\n", l, + nasid_mask_long); /* * If this nasid has been added to the machine since @@ -1060,19 +1065,19 @@ xpc_identify_activate_IRQ_sender_sn2(void) * remote nasid in our reserved pages machine mask. * This is used in the event of module reload. */ - xpc_mach_nasids[word] |= nasid_mask; + xpc_mach_nasids[l] |= nasid_mask_long; /* locate the nasid(s) which sent interrupts */ - for (bit = 0; bit < (8 * sizeof(u64)); bit++) { - if (nasid_mask & (1UL << bit)) { - n_IRQs_detected++; - nasid = XPC_NASID_FROM_W_B(word, bit); - dev_dbg(xpc_part, "interrupt from nasid %ld\n", - nasid); - xpc_identify_activate_IRQ_req_sn2(nasid); - } - } + do { + n_IRQs_detected++; + nasid = (l * BITS_PER_LONG + b) * 2; + dev_dbg(xpc_part, "interrupt from nasid %ld\n", nasid); + xpc_identify_activate_IRQ_req_sn2(nasid); + + b = find_next_bit(&nasid_mask_long, BITS_PER_LONG, + b + 1); + } while (b < BITS_PER_LONG); } return n_IRQs_detected; } |