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-rw-r--r--arch/ia64/sn/kernel/sn1/synergy.c533
1 files changed, 0 insertions, 533 deletions
diff --git a/arch/ia64/sn/kernel/sn1/synergy.c b/arch/ia64/sn/kernel/sn1/synergy.c
deleted file mode 100644
index df31731bc73b9d..00000000000000
--- a/arch/ia64/sn/kernel/sn1/synergy.c
+++ /dev/null
@@ -1,533 +0,0 @@
-/*
- * SN1 Platform specific synergy Support
- *
- * Copyright (C) 2000-2002 Silicon Graphics, Inc. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public
- * License along with this program; if not, write the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/NoticeExplan
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/spinlock.h>
-#include <linux/proc_fs.h>
-
-#include <asm/ptrace.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm/smp.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/sn1/bedrock.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/nodepda.h>
-#include <asm/sn/sn1/synergy.h>
-#include <asm/sn/sndrv.h>
-
-int bit_pos_to_irq(int bit);
-void setclear_mask_b(int irq, int cpuid, int set);
-void setclear_mask_a(int irq, int cpuid, int set);
-void * kmalloc(size_t size, int flags);
-
-static int synergy_perf_initialized = 0;
-
-void
-synergy_intr_alloc(int bit, int cpuid) {
- return;
-}
-
-int
-synergy_intr_connect(int bit,
- int cpuid)
-{
- int irq;
- unsigned is_b;
-
- irq = bit_pos_to_irq(bit);
-
- is_b = (cpuid_to_slice(cpuid)) & 1;
- if (is_b) {
- setclear_mask_b(irq,cpuid,1);
- setclear_mask_a(irq,cpuid, 0);
- } else {
- setclear_mask_a(irq, cpuid, 1);
- setclear_mask_b(irq, cpuid, 0);
- }
- return 0;
-}
-void
-setclear_mask_a(int irq, int cpuid, int set)
-{
- int synergy;
- int nasid;
- int reg_num;
- unsigned long mask;
- unsigned long addr;
- unsigned long reg;
- unsigned long val;
- int my_cnode, my_synergy;
- int target_cnode, target_synergy;
-
- /*
- * Perform some idiot checks ..
- */
- if ( (irq < 0) || (irq > 255) ||
- (cpuid < 0) || (cpuid > 512) ) {
- printk("clear_mask_a: Invalid parameter irq %d cpuid %d\n", irq, cpuid);
- return;
- }
-
- target_cnode = cpuid_to_cnodeid(cpuid);
- target_synergy = cpuid_to_synergy(cpuid);
- my_cnode = cpuid_to_cnodeid(smp_processor_id());
- my_synergy = cpuid_to_synergy(smp_processor_id());
-
- reg_num = irq / 64;
- mask = 1;
- mask <<= (irq % 64);
- switch (reg_num) {
- case 0:
- reg = VEC_MASK0A;
- addr = VEC_MASK0A_ADDR;
- break;
- case 1:
- reg = VEC_MASK1A;
- addr = VEC_MASK1A_ADDR;
- break;
- case 2:
- reg = VEC_MASK2A;
- addr = VEC_MASK2A_ADDR;
- break;
- case 3:
- reg = VEC_MASK3A;
- addr = VEC_MASK3A_ADDR;
- break;
- default:
- reg = addr = 0;
- break;
- }
- if (my_cnode == target_cnode && my_synergy == target_synergy) {
- // local synergy
- val = READ_LOCAL_SYNERGY_REG(addr);
- if (set) {
- val |= mask;
- } else {
- val &= ~mask;
- }
- WRITE_LOCAL_SYNERGY_REG(addr, val);
- val = READ_LOCAL_SYNERGY_REG(addr);
- } else { /* remote synergy */
- synergy = cpuid_to_synergy(cpuid);
- nasid = cpuid_to_nasid(cpuid);
- val = REMOTE_SYNERGY_LOAD(nasid, synergy, reg);
- if (set) {
- val |= mask;
- } else {
- val &= ~mask;
- }
- REMOTE_SYNERGY_STORE(nasid, synergy, reg, val);
- }
-}
-
-void
-setclear_mask_b(int irq, int cpuid, int set)
-{
- int synergy;
- int nasid;
- int reg_num;
- unsigned long mask;
- unsigned long addr;
- unsigned long reg;
- unsigned long val;
- int my_cnode, my_synergy;
- int target_cnode, target_synergy;
-
- /*
- * Perform some idiot checks ..
- */
- if ( (irq < 0) || (irq > 255) ||
- (cpuid < 0) || (cpuid > 512) ) {
- printk("clear_mask_b: Invalid parameter irq %d cpuid %d\n", irq, cpuid);
- return;
- }
-
- target_cnode = cpuid_to_cnodeid(cpuid);
- target_synergy = cpuid_to_synergy(cpuid);
- my_cnode = cpuid_to_cnodeid(smp_processor_id());
- my_synergy = cpuid_to_synergy(smp_processor_id());
-
- reg_num = irq / 64;
- mask = 1;
- mask <<= (irq % 64);
- switch (reg_num) {
- case 0:
- reg = VEC_MASK0B;
- addr = VEC_MASK0B_ADDR;
- break;
- case 1:
- reg = VEC_MASK1B;
- addr = VEC_MASK1B_ADDR;
- break;
- case 2:
- reg = VEC_MASK2B;
- addr = VEC_MASK2B_ADDR;
- break;
- case 3:
- reg = VEC_MASK3B;
- addr = VEC_MASK3B_ADDR;
- break;
- default:
- reg = addr = 0;
- break;
- }
- if (my_cnode == target_cnode && my_synergy == target_synergy) {
- // local synergy
- val = READ_LOCAL_SYNERGY_REG(addr);
- if (set) {
- val |= mask;
- } else {
- val &= ~mask;
- }
- WRITE_LOCAL_SYNERGY_REG(addr, val);
- val = READ_LOCAL_SYNERGY_REG(addr);
- } else { /* remote synergy */
- synergy = cpuid_to_synergy(cpuid);
- nasid = cpuid_to_nasid(cpuid);
- val = REMOTE_SYNERGY_LOAD(nasid, synergy, reg);
- if (set) {
- val |= mask;
- } else {
- val &= ~mask;
- }
- REMOTE_SYNERGY_STORE(nasid, synergy, reg, val);
- }
-}
-
-/*
- * Synergy perf stats. Multiplexed via timer_interrupt.
- */
-
-static int
-synergy_perf_append(uint64_t modesel)
-{
- int cnode;
- nodepda_t *npdap;
- synergy_perf_t *p;
- int checked = 0;
- int err = 0;
- unsigned long flags;
-
- /* bit 45 is enable */
- modesel |= (1UL << 45);
-
- for (cnode=0; cnode < numnodes; cnode++) {
- /* for each node, insert a new synergy_perf entry */
- if ((npdap = NODEPDA(cnode)) == NULL) {
- printk("synergy_perf_append: cnode=%d NODEPDA(cnode)==NULL, nodepda=%p\n", cnode, (void *)nodepda);
- continue;
- }
-
- if (npdap->synergy_perf_enabled) {
- /* user must disable counting to append new events */
- err = -EBUSY;
- break;
- }
-
- if (!checked && npdap->synergy_perf_data != NULL) {
- checked = 1;
- for (p = npdap->synergy_perf_first; ;) {
- if (p->modesel == modesel)
- return 0; /* event already registered */
- if ((p = p->next) == npdap->synergy_perf_first)
- break;
- }
- }
-
- /* XX use kmem_alloc_node() when it is implemented */
- p = (synergy_perf_t *)kmalloc(sizeof(synergy_perf_t), GFP_KERNEL);
- if ((((uint64_t)p) & 7UL) != 0)
- BUG(); /* bad alignment */
- if (p == NULL) {
- err = -ENOMEM;
- break;
- }
- else {
- memset(p, 0, sizeof(synergy_perf_t));
- p->modesel = modesel;
-
- spin_lock_irqsave(&npdap->synergy_perf_lock, flags);
- if (npdap->synergy_perf_data == NULL) {
- /* circular list */
- p->next = p;
- npdap->synergy_perf_first = p;
- npdap->synergy_perf_data = p;
- }
- else {
- p->next = npdap->synergy_perf_data->next;
- npdap->synergy_perf_data->next = p;
- }
- spin_unlock_irqrestore(&npdap->synergy_perf_lock, flags);
- }
- }
-
- return err;
-}
-
-static void
-synergy_perf_set_freq(int freq)
-{
- int cnode;
- nodepda_t *npdap;
-
- for (cnode=0; cnode < numnodes; cnode++) {
- if ((npdap = NODEPDA(cnode)) != NULL)
- npdap->synergy_perf_freq = freq;
- }
-}
-
-static void
-synergy_perf_set_enable(int enable)
-{
- int cnode;
- nodepda_t *npdap;
-
- for (cnode=0; cnode < numnodes; cnode++) {
- if ((npdap = NODEPDA(cnode)) != NULL)
- npdap->synergy_perf_enabled = enable;
- }
- printk("NOTICE: synergy perf counting %sabled on all nodes\n", enable ? "en" : "dis");
-}
-
-static int
-synergy_perf_size(nodepda_t *npdap)
-{
- synergy_perf_t *p;
- int n;
-
- if (npdap->synergy_perf_enabled == 0) {
- /* no stats to return */
- return 0;
- }
-
- spin_lock_irq(&npdap->synergy_perf_lock);
- for (n=0, p = npdap->synergy_perf_first; p;) {
- n++;
- p = p->next;
- if (p == npdap->synergy_perf_first)
- break;
- }
- spin_unlock_irq(&npdap->synergy_perf_lock);
-
- /* bytes == n pairs of {event,counter} */
- return n * 2 * sizeof(uint64_t);
-}
-
-static int
-synergy_perf_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- int cnode;
- nodepda_t *npdap;
- synergy_perf_t *p;
- int intarg;
- int fsb;
- uint64_t longarg;
- uint64_t *stats;
- int n;
- devfs_handle_t d;
- arbitrary_info_t info;
-
- if ((d = devfs_get_handle_from_inode(inode)) == NULL)
- return -ENODEV;
- info = hwgraph_fastinfo_get(d);
-
- cnode = SYNERGY_PERF_INFO_CNODE(info);
- fsb = SYNERGY_PERF_INFO_FSB(info);
- npdap = NODEPDA(cnode);
-
- switch (cmd) {
- case SNDRV_GET_SYNERGY_VERSION:
- /* return int, version of data structure for SNDRV_GET_SYNERGYINFO */
- intarg = 1; /* version 1 */
- if (copy_to_user((void *)arg, &intarg, sizeof(intarg)))
- return -EFAULT;
- break;
-
- case SNDRV_GET_INFOSIZE:
- /* return int, sizeof buf needed for SYNERGY_PERF_GET_STATS */
- intarg = synergy_perf_size(npdap);
- if (copy_to_user((void *)arg, &intarg, sizeof(intarg)))
- return -EFAULT;
- break;
-
- case SNDRV_GET_SYNERGYINFO:
- /* return array of event/value pairs, this node only */
- if ((intarg = synergy_perf_size(npdap)) <= 0)
- return -ENODATA;
- if ((stats = (uint64_t *)kmalloc(intarg, GFP_KERNEL)) == NULL)
- return -ENOMEM;
- spin_lock_irq(&npdap->synergy_perf_lock);
- for (n=0, p = npdap->synergy_perf_first; p;) {
- stats[n++] = p->modesel;
- if (p->intervals > 0)
- stats[n++] = p->counts[fsb] * p->total_intervals / p->intervals;
- else
- stats[n++] = 0;
- p = p->next;
- if (p == npdap->synergy_perf_first)
- break;
- }
- spin_unlock_irq(&npdap->synergy_perf_lock);
-
- if (copy_to_user((void *)arg, stats, intarg)) {
- kfree(stats);
- return -EFAULT;
- }
-
- kfree(stats);
- break;
-
- case SNDRV_SYNERGY_APPEND:
- /* reads 64bit event, append synergy perf event to all nodes */
- if (copy_from_user(&longarg, (void *)arg, sizeof(longarg)))
- return -EFAULT;
- return synergy_perf_append(longarg);
- break;
-
- case SNDRV_GET_SYNERGY_STATUS:
- /* return int, 1 if enabled else 0 */
- intarg = npdap->synergy_perf_enabled;
- if (copy_to_user((void *)arg, &intarg, sizeof(intarg)))
- return -EFAULT;
- break;
-
- case SNDRV_SYNERGY_ENABLE:
- /* read int, if true enable counting else disable */
- if (copy_from_user(&intarg, (void *)arg, sizeof(intarg)))
- return -EFAULT;
- synergy_perf_set_enable(intarg);
- break;
-
- case SNDRV_SYNERGY_FREQ:
- /* read int, set jiffies per update */
- if (copy_from_user(&intarg, (void *)arg, sizeof(intarg)))
- return -EFAULT;
- if (intarg < 0 || intarg >= HZ)
- return -EINVAL;
- synergy_perf_set_freq(intarg);
- break;
-
- default:
- printk("Warning: invalid ioctl %d on synergy mon for cnode=%d fsb=%d\n", cmd, cnode, fsb);
- return -EINVAL;
- }
- return(0);
-}
-
-struct file_operations synergy_mon_fops = {
- .ioctl = synergy_perf_ioctl,
-};
-
-void
-synergy_perf_update(int cpu)
-{
- nasid_t nasid;
- cnodeid_t cnode;
- struct nodepda_s *npdap;
-
- /*
- * synergy_perf_initialized is set by synergy_perf_init()
- * which is called last thing by sn_mp_setup(), i.e. well
- * after nodepda has been initialized.
- */
- if (!synergy_perf_initialized)
- return;
-
- cnode = cpuid_to_cnodeid(cpu);
- npdap = NODEPDA(cnode);
-
- if (npdap == NULL || cnode < 0 || cnode >= numnodes)
- /* this should not happen: still in early io init */
- return;
-
-#if 0
- /* use this to check nodepda initialization */
- if (((uint64_t)npdap) & 0x7) {
- printk("\nERROR on cpu %d : cnode=%d, npdap == %p, not aligned\n", cpu, cnode, npdap);
- BUG();
- }
-#endif
-
- if (npdap->synergy_perf_enabled == 0 || npdap->synergy_perf_data == NULL) {
- /* Not enabled, or no events to monitor */
- return;
- }
-
- if (npdap->synergy_inactive_intervals++ % npdap->synergy_perf_freq != 0) {
- /* don't multiplex on every timer interrupt */
- return;
- }
-
- /*
- * Read registers for last interval and increment counters.
- * Hold the per-node synergy_perf_lock so concurrent readers get
- * consistent values.
- */
- spin_lock_irq(&npdap->synergy_perf_lock);
-
- nasid = cpuid_to_nasid(cpu);
- npdap->synergy_active_intervals++;
- npdap->synergy_perf_data->intervals++;
- npdap->synergy_perf_data->total_intervals = npdap->synergy_active_intervals;
-
- npdap->synergy_perf_data->counts[0] += 0xffffffffffUL &
- REMOTE_SYNERGY_LOAD(nasid, 0, PERF_CNTR0_A);
-
- npdap->synergy_perf_data->counts[1] += 0xffffffffffUL &
- REMOTE_SYNERGY_LOAD(nasid, 1, PERF_CNTR0_B);
-
- /* skip to next in circular list */
- npdap->synergy_perf_data = npdap->synergy_perf_data->next;
-
- spin_unlock_irq(&npdap->synergy_perf_lock);
-
- /* set the counter 0 selection modes for both A and B */
- REMOTE_SYNERGY_STORE(nasid, 0, PERF_CNTL0_A, npdap->synergy_perf_data->modesel);
- REMOTE_SYNERGY_STORE(nasid, 1, PERF_CNTL0_B, npdap->synergy_perf_data->modesel);
-
- /* and reset the counter registers to zero */
- REMOTE_SYNERGY_STORE(nasid, 0, PERF_CNTR0_A, 0UL);
- REMOTE_SYNERGY_STORE(nasid, 1, PERF_CNTR0_B, 0UL);
-}
-
-void
-synergy_perf_init(void)
-{
- printk("synergy_perf_init(), counting is initially disabled\n");
- synergy_perf_initialized++;
-}
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-02 05:37:56 +0000