diff options
author | Dean Nelson <dcn@sgi.com> | 2008-07-29 22:34:14 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-30 09:41:50 -0700 |
commit | 04de741885bc7565a28150e82c56a56e544440e6 (patch) | |
tree | 7c955e1d9dbe4c7d319818f48e22ef85113b2c2f /drivers/misc/sgi-xp/xpc_sn2.c | |
parent | ea57f80c8c0e59cfc5095f7e856ce7c8e6ac2984 (diff) | |
download | blackbird-op-linux-04de741885bc7565a28150e82c56a56e544440e6.tar.gz blackbird-op-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/misc/sgi-xp/xpc_sn2.c')
-rw-r--r-- | drivers/misc/sgi-xp/xpc_sn2.c | 73 |
1 files changed, 39 insertions, 34 deletions
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; } |