diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/misc/sgi-gru/grukdump.c')
-rw-r--r-- | ANDROID_3.4.5/drivers/misc/sgi-gru/grukdump.c | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/ANDROID_3.4.5/drivers/misc/sgi-gru/grukdump.c b/ANDROID_3.4.5/drivers/misc/sgi-gru/grukdump.c deleted file mode 100644 index 9b2062d1..00000000 --- a/ANDROID_3.4.5/drivers/misc/sgi-gru/grukdump.c +++ /dev/null @@ -1,235 +0,0 @@ -/* - * SN Platform GRU Driver - * - * Dump GRU State - * - * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/spinlock.h> -#include <linux/uaccess.h> -#include <linux/delay.h> -#include <linux/bitops.h> -#include <asm/uv/uv_hub.h> -#include "gru.h" -#include "grutables.h" -#include "gruhandles.h" -#include "grulib.h" - -#define CCH_LOCK_ATTEMPTS 10 - -static int gru_user_copy_handle(void __user **dp, void *s) -{ - if (copy_to_user(*dp, s, GRU_HANDLE_BYTES)) - return -1; - *dp += GRU_HANDLE_BYTES; - return 0; -} - -static int gru_dump_context_data(void *grubase, - struct gru_context_configuration_handle *cch, - void __user *ubuf, int ctxnum, int dsrcnt, - int flush_cbrs) -{ - void *cb, *cbe, *tfh, *gseg; - int i, scr; - - gseg = grubase + ctxnum * GRU_GSEG_STRIDE; - cb = gseg + GRU_CB_BASE; - cbe = grubase + GRU_CBE_BASE; - tfh = grubase + GRU_TFH_BASE; - - for_each_cbr_in_allocation_map(i, &cch->cbr_allocation_map, scr) { - if (flush_cbrs) - gru_flush_cache(cb); - if (gru_user_copy_handle(&ubuf, cb)) - goto fail; - if (gru_user_copy_handle(&ubuf, tfh + i * GRU_HANDLE_STRIDE)) - goto fail; - if (gru_user_copy_handle(&ubuf, cbe + i * GRU_HANDLE_STRIDE)) - goto fail; - cb += GRU_HANDLE_STRIDE; - } - if (dsrcnt) - memcpy(ubuf, gseg + GRU_DS_BASE, dsrcnt * GRU_HANDLE_STRIDE); - return 0; - -fail: - return -EFAULT; -} - -static int gru_dump_tfm(struct gru_state *gru, - void __user *ubuf, void __user *ubufend) -{ - struct gru_tlb_fault_map *tfm; - int i, ret, bytes; - - bytes = GRU_NUM_TFM * GRU_CACHE_LINE_BYTES; - if (bytes > ubufend - ubuf) - ret = -EFBIG; - - for (i = 0; i < GRU_NUM_TFM; i++) { - tfm = get_tfm(gru->gs_gru_base_vaddr, i); - if (gru_user_copy_handle(&ubuf, tfm)) - goto fail; - } - return GRU_NUM_TFM * GRU_CACHE_LINE_BYTES; - -fail: - return -EFAULT; -} - -static int gru_dump_tgh(struct gru_state *gru, - void __user *ubuf, void __user *ubufend) -{ - struct gru_tlb_global_handle *tgh; - int i, ret, bytes; - - bytes = GRU_NUM_TGH * GRU_CACHE_LINE_BYTES; - if (bytes > ubufend - ubuf) - ret = -EFBIG; - - for (i = 0; i < GRU_NUM_TGH; i++) { - tgh = get_tgh(gru->gs_gru_base_vaddr, i); - if (gru_user_copy_handle(&ubuf, tgh)) - goto fail; - } - return GRU_NUM_TGH * GRU_CACHE_LINE_BYTES; - -fail: - return -EFAULT; -} - -static int gru_dump_context(struct gru_state *gru, int ctxnum, - void __user *ubuf, void __user *ubufend, char data_opt, - char lock_cch, char flush_cbrs) -{ - struct gru_dump_context_header hdr; - struct gru_dump_context_header __user *uhdr = ubuf; - struct gru_context_configuration_handle *cch, *ubufcch; - struct gru_thread_state *gts; - int try, cch_locked, cbrcnt = 0, dsrcnt = 0, bytes = 0, ret = 0; - void *grubase; - - memset(&hdr, 0, sizeof(hdr)); - grubase = gru->gs_gru_base_vaddr; - cch = get_cch(grubase, ctxnum); - for (try = 0; try < CCH_LOCK_ATTEMPTS; try++) { - cch_locked = trylock_cch_handle(cch); - if (cch_locked) - break; - msleep(1); - } - - ubuf += sizeof(hdr); - ubufcch = ubuf; - if (gru_user_copy_handle(&ubuf, cch)) - goto fail; - if (cch_locked) - ubufcch->delresp = 0; - bytes = sizeof(hdr) + GRU_CACHE_LINE_BYTES; - - if (cch_locked || !lock_cch) { - gts = gru->gs_gts[ctxnum]; - if (gts && gts->ts_vma) { - hdr.pid = gts->ts_tgid_owner; - hdr.vaddr = gts->ts_vma->vm_start; - } - if (cch->state != CCHSTATE_INACTIVE) { - cbrcnt = hweight64(cch->cbr_allocation_map) * - GRU_CBR_AU_SIZE; - dsrcnt = data_opt ? hweight32(cch->dsr_allocation_map) * - GRU_DSR_AU_CL : 0; - } - bytes += (3 * cbrcnt + dsrcnt) * GRU_CACHE_LINE_BYTES; - if (bytes > ubufend - ubuf) - ret = -EFBIG; - else - ret = gru_dump_context_data(grubase, cch, ubuf, ctxnum, - dsrcnt, flush_cbrs); - } - if (cch_locked) - unlock_cch_handle(cch); - if (ret) - return ret; - - hdr.magic = GRU_DUMP_MAGIC; - hdr.gid = gru->gs_gid; - hdr.ctxnum = ctxnum; - hdr.cbrcnt = cbrcnt; - hdr.dsrcnt = dsrcnt; - hdr.cch_locked = cch_locked; - if (!ret && copy_to_user((void __user *)uhdr, &hdr, sizeof(hdr))) - ret = -EFAULT; - - return ret ? ret : bytes; - -fail: - unlock_cch_handle(cch); - return -EFAULT; -} - -int gru_dump_chiplet_request(unsigned long arg) -{ - struct gru_state *gru; - struct gru_dump_chiplet_state_req req; - void __user *ubuf; - void __user *ubufend; - int ctxnum, ret, cnt = 0; - - if (copy_from_user(&req, (void __user *)arg, sizeof(req))) - return -EFAULT; - - /* Currently, only dump by gid is implemented */ - if (req.gid >= gru_max_gids || req.gid < 0) - return -EINVAL; - - gru = GID_TO_GRU(req.gid); - ubuf = req.buf; - ubufend = req.buf + req.buflen; - - ret = gru_dump_tfm(gru, ubuf, ubufend); - if (ret < 0) - goto fail; - ubuf += ret; - - ret = gru_dump_tgh(gru, ubuf, ubufend); - if (ret < 0) - goto fail; - ubuf += ret; - - for (ctxnum = 0; ctxnum < GRU_NUM_CCH; ctxnum++) { - if (req.ctxnum == ctxnum || req.ctxnum < 0) { - ret = gru_dump_context(gru, ctxnum, ubuf, ubufend, - req.data_opt, req.lock_cch, - req.flush_cbrs); - if (ret < 0) - goto fail; - ubuf += ret; - cnt++; - } - } - - if (copy_to_user((void __user *)arg, &req, sizeof(req))) - return -EFAULT; - return cnt; - -fail: - return ret; -} |