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authorHoang-Nam Nguyen <hnguyen@de.ibm.com>2007-07-12 11:53:11 -0400
committerRoland Dreier <rolandd@cisco.com>2007-07-17 21:37:40 -0400
commit187c72e31f92791ec70395b80aa9883f2edad97f (patch)
tree74863c647f46f1282d9b8c9b0ebd7a3ea33fca74 /drivers/infiniband/hw/ehca/ehca_mrmw.c
parentdf17bfd4a030f7d986de14210f4b21876a7a2989 (diff)
IB/ehca: Restructure ehca_set_pagebuf()
Split ehca_set_pagebuf() into three functions depending on MR type (phys/user/fast) and remove superfluous ehca_set_pagebuf_1(). Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_mrmw.c')
-rw-r--r--drivers/infiniband/hw/ehca/ehca_mrmw.c531
1 files changed, 200 insertions, 331 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
index 53b334b3c325..93c26ccfc3c5 100644
--- a/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -824,6 +824,7 @@ int ehca_map_phys_fmr(struct ib_fmr *fmr,
824 pginfo.u.fmr.page_list = page_list; 824 pginfo.u.fmr.page_list = page_list;
825 pginfo.next_hwpage = ((iova & (e_fmr->fmr_page_size-1)) / 825 pginfo.next_hwpage = ((iova & (e_fmr->fmr_page_size-1)) /
826 EHCA_PAGESIZE); 826 EHCA_PAGESIZE);
827 pginfo.u.fmr.fmr_pgsize = e_fmr->fmr_page_size;
827 828
828 ret = ehca_rereg_mr(shca, e_fmr, (u64*)iova, 829 ret = ehca_rereg_mr(shca, e_fmr, (u64*)iova,
829 list_len * e_fmr->fmr_page_size, 830 list_len * e_fmr->fmr_page_size,
@@ -1044,15 +1045,15 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
1044 } else 1045 } else
1045 rnum = MAX_RPAGES; 1046 rnum = MAX_RPAGES;
1046 1047
1047 if (rnum > 1) { 1048 ret = ehca_set_pagebuf(pginfo, rnum, kpage);
1048 ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage); 1049 if (ret) {
1049 if (ret) { 1050 ehca_err(&shca->ib_device, "ehca_set_pagebuf "
1050 ehca_err(&shca->ib_device, "ehca_set_pagebuf "
1051 "bad rc, ret=%x rnum=%x kpage=%p", 1051 "bad rc, ret=%x rnum=%x kpage=%p",
1052 ret, rnum, kpage); 1052 ret, rnum, kpage);
1053 ret = -EFAULT; 1053 goto ehca_reg_mr_rpages_exit1;
1054 goto ehca_reg_mr_rpages_exit1; 1054 }
1055 } 1055
1056 if (rnum > 1) {
1056 rpage = virt_to_abs(kpage); 1057 rpage = virt_to_abs(kpage);
1057 if (!rpage) { 1058 if (!rpage) {
1058 ehca_err(&shca->ib_device, "kpage=%p i=%x", 1059 ehca_err(&shca->ib_device, "kpage=%p i=%x",
@@ -1060,15 +1061,8 @@ int ehca_reg_mr_rpages(struct ehca_shca *shca,
1060 ret = -EFAULT; 1061 ret = -EFAULT;
1061 goto ehca_reg_mr_rpages_exit1; 1062 goto ehca_reg_mr_rpages_exit1;
1062 } 1063 }
1063 } else { /* rnum==1 */ 1064 } else
1064 ret = ehca_set_pagebuf_1(e_mr, pginfo, &rpage); 1065 rpage = *kpage;
1065 if (ret) {
1066 ehca_err(&shca->ib_device, "ehca_set_pagebuf_1 "
1067 "bad rc, ret=%x i=%x", ret, i);
1068 ret = -EFAULT;
1069 goto ehca_reg_mr_rpages_exit1;
1070 }
1071 }
1072 1066
1073 h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr, 1067 h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr,
1074 0, /* pagesize 4k */ 1068 0, /* pagesize 4k */
@@ -1146,7 +1140,7 @@ inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca,
1146 } 1140 }
1147 1141
1148 pginfo_save = *pginfo; 1142 pginfo_save = *pginfo;
1149 ret = ehca_set_pagebuf(e_mr, pginfo, pginfo->num_hwpages, kpage); 1143 ret = ehca_set_pagebuf(pginfo, pginfo->num_hwpages, kpage);
1150 if (ret) { 1144 if (ret) {
1151 ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p " 1145 ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p "
1152 "pginfo=%p type=%x num_kpages=%lx num_hwpages=%lx " 1146 "pginfo=%p type=%x num_kpages=%lx num_hwpages=%lx "
@@ -1306,98 +1300,86 @@ int ehca_unmap_one_fmr(struct ehca_shca *shca,
1306{ 1300{
1307 int ret = 0; 1301 int ret = 0;
1308 u64 h_ret; 1302 u64 h_ret;
1309 int rereg_1_hcall = 1; /* 1: use hipz_mr_reregister directly */
1310 int rereg_3_hcall = 0; /* 1: use 3 hipz calls for unmapping */
1311 struct ehca_pd *e_pd = 1303 struct ehca_pd *e_pd =
1312 container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd); 1304 container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd);
1313 struct ehca_mr save_fmr; 1305 struct ehca_mr save_fmr;
1314 u32 tmp_lkey, tmp_rkey; 1306 u32 tmp_lkey, tmp_rkey;
1315 struct ehca_mr_pginfo pginfo; 1307 struct ehca_mr_pginfo pginfo;
1316 struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0}; 1308 struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
1309 struct ehca_mr save_mr;
1317 1310
1318 /* first check if reregistration hCall can be used for unmap */ 1311 if (e_fmr->fmr_max_pages <= MAX_RPAGES) {
1319 if (e_fmr->fmr_max_pages > MAX_RPAGES) {
1320 rereg_1_hcall = 0;
1321 rereg_3_hcall = 1;
1322 }
1323
1324 if (rereg_1_hcall) {
1325 /* 1312 /*
1326 * note: after using rereg hcall with len=0, 1313 * note: after using rereg hcall with len=0,
1327 * rereg hcall must be used again for registering pages 1314 * rereg hcall must be used again for registering pages
1328 */ 1315 */
1329 h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0, 1316 h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0,
1330 0, 0, e_pd->fw_pd, 0, &hipzout); 1317 0, 0, e_pd->fw_pd, 0, &hipzout);
1331 if (h_ret != H_SUCCESS) { 1318 if (h_ret == H_SUCCESS) {
1332 /*
1333 * should not happen, because length checked above,
1334 * FMRs are not shared and no MW bound to FMRs
1335 */
1336 ehca_err(&shca->ib_device, "hipz_reregister_pmr failed "
1337 "(Rereg1), h_ret=%lx e_fmr=%p hca_hndl=%lx "
1338 "mr_hndl=%lx lkey=%x lkey_out=%x",
1339 h_ret, e_fmr, shca->ipz_hca_handle.handle,
1340 e_fmr->ipz_mr_handle.handle,
1341 e_fmr->ib.ib_fmr.lkey, hipzout.lkey);
1342 rereg_3_hcall = 1;
1343 } else {
1344 /* successful reregistration */ 1319 /* successful reregistration */
1345 e_fmr->start = NULL; 1320 e_fmr->start = NULL;
1346 e_fmr->size = 0; 1321 e_fmr->size = 0;
1347 tmp_lkey = hipzout.lkey; 1322 tmp_lkey = hipzout.lkey;
1348 tmp_rkey = hipzout.rkey; 1323 tmp_rkey = hipzout.rkey;
1324 return 0;
1349 } 1325 }
1326 /*
1327 * should not happen, because length checked above,
1328 * FMRs are not shared and no MW bound to FMRs
1329 */
1330 ehca_err(&shca->ib_device, "hipz_reregister_pmr failed "
1331 "(Rereg1), h_ret=%lx e_fmr=%p hca_hndl=%lx "
1332 "mr_hndl=%lx lkey=%x lkey_out=%x",
1333 h_ret, e_fmr, shca->ipz_hca_handle.handle,
1334 e_fmr->ipz_mr_handle.handle,
1335 e_fmr->ib.ib_fmr.lkey, hipzout.lkey);
1336 /* try free and rereg */
1350 } 1337 }
1351 1338
1352 if (rereg_3_hcall) { 1339 /* first free old FMR */
1353 struct ehca_mr save_mr; 1340 h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr);
1354 1341 if (h_ret != H_SUCCESS) {
1355 /* first free old FMR */ 1342 ehca_err(&shca->ib_device, "hipz_free_mr failed, "
1356 h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr); 1343 "h_ret=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx "
1357 if (h_ret != H_SUCCESS) { 1344 "lkey=%x",
1358 ehca_err(&shca->ib_device, "hipz_free_mr failed, " 1345 h_ret, e_fmr, shca->ipz_hca_handle.handle,
1359 "h_ret=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx " 1346 e_fmr->ipz_mr_handle.handle,
1360 "lkey=%x", 1347 e_fmr->ib.ib_fmr.lkey);
1361 h_ret, e_fmr, shca->ipz_hca_handle.handle, 1348 ret = ehca2ib_return_code(h_ret);
1362 e_fmr->ipz_mr_handle.handle, 1349 goto ehca_unmap_one_fmr_exit0;
1363 e_fmr->ib.ib_fmr.lkey); 1350 }
1364 ret = ehca2ib_return_code(h_ret); 1351 /* clean ehca_mr_t, without changing lock */
1365 goto ehca_unmap_one_fmr_exit0; 1352 save_fmr = *e_fmr;
1366 } 1353 ehca_mr_deletenew(e_fmr);
1367 /* clean ehca_mr_t, without changing lock */
1368 save_fmr = *e_fmr;
1369 ehca_mr_deletenew(e_fmr);
1370 1354
1371 /* set some MR values */ 1355 /* set some MR values */
1372 e_fmr->flags = save_fmr.flags; 1356 e_fmr->flags = save_fmr.flags;
1373 e_fmr->fmr_page_size = save_fmr.fmr_page_size; 1357 e_fmr->fmr_page_size = save_fmr.fmr_page_size;
1374 e_fmr->fmr_max_pages = save_fmr.fmr_max_pages; 1358 e_fmr->fmr_max_pages = save_fmr.fmr_max_pages;
1375 e_fmr->fmr_max_maps = save_fmr.fmr_max_maps; 1359 e_fmr->fmr_max_maps = save_fmr.fmr_max_maps;
1376 e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt; 1360 e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt;
1377 e_fmr->acl = save_fmr.acl; 1361 e_fmr->acl = save_fmr.acl;
1378 1362
1379 memset(&pginfo, 0, sizeof(pginfo)); 1363 memset(&pginfo, 0, sizeof(pginfo));
1380 pginfo.type = EHCA_MR_PGI_FMR; 1364 pginfo.type = EHCA_MR_PGI_FMR;
1381 pginfo.num_kpages = 0; 1365 pginfo.num_kpages = 0;
1382 pginfo.num_hwpages = 0; 1366 pginfo.num_hwpages = 0;
1383 ret = ehca_reg_mr(shca, e_fmr, NULL, 1367 ret = ehca_reg_mr(shca, e_fmr, NULL,
1384 (e_fmr->fmr_max_pages * e_fmr->fmr_page_size), 1368 (e_fmr->fmr_max_pages * e_fmr->fmr_page_size),
1385 e_fmr->acl, e_pd, &pginfo, &tmp_lkey, 1369 e_fmr->acl, e_pd, &pginfo, &tmp_lkey,
1386 &tmp_rkey); 1370 &tmp_rkey);
1387 if (ret) { 1371 if (ret) {
1388 u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr; 1372 u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr;
1389 memcpy(&e_fmr->flags, &(save_mr.flags), 1373 memcpy(&e_fmr->flags, &(save_mr.flags),
1390 sizeof(struct ehca_mr) - offset); 1374 sizeof(struct ehca_mr) - offset);
1391 goto ehca_unmap_one_fmr_exit0; 1375 goto ehca_unmap_one_fmr_exit0;
1392 }
1393 } 1376 }
1394 1377
1395ehca_unmap_one_fmr_exit0: 1378ehca_unmap_one_fmr_exit0:
1396 if (ret) 1379 if (ret)
1397 ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x " 1380 ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x "
1398 "fmr_max_pages=%x rereg_1_hcall=%x rereg_3_hcall=%x", 1381 "fmr_max_pages=%x",
1399 ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages, 1382 ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages);
1400 rereg_1_hcall, rereg_3_hcall);
1401 return ret; 1383 return ret;
1402} /* end ehca_unmap_one_fmr() */ 1384} /* end ehca_unmap_one_fmr() */
1403 1385
@@ -1690,300 +1672,187 @@ int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
1690 1672
1691/*----------------------------------------------------------------------*/ 1673/*----------------------------------------------------------------------*/
1692 1674
1693/* setup page buffer from page info */ 1675/* PAGE_SIZE >= pginfo->hwpage_size */
1694int ehca_set_pagebuf(struct ehca_mr *e_mr, 1676static int ehca_set_pagebuf_user1(struct ehca_mr_pginfo *pginfo,
1695 struct ehca_mr_pginfo *pginfo, 1677 u32 number,
1696 u32 number, 1678 u64 *kpage)
1697 u64 *kpage)
1698{ 1679{
1699 int ret = 0; 1680 int ret = 0;
1700 struct ib_umem_chunk *prev_chunk; 1681 struct ib_umem_chunk *prev_chunk;
1701 struct ib_umem_chunk *chunk; 1682 struct ib_umem_chunk *chunk;
1702 struct ib_phys_buf *pbuf; 1683 u64 pgaddr;
1703 u64 *fmrlist;
1704 u64 num_hw, pgaddr, offs_hw;
1705 u32 i = 0; 1684 u32 i = 0;
1706 u32 j = 0; 1685 u32 j = 0;
1707 1686
1708 if (pginfo->type == EHCA_MR_PGI_PHYS) { 1687 /* loop over desired chunk entries */
1709 /* loop over desired phys_buf_array entries */ 1688 chunk = pginfo->u.usr.next_chunk;
1710 while (i < number) { 1689 prev_chunk = pginfo->u.usr.next_chunk;
1711 pbuf = pginfo->u.phy.phys_buf_array 1690 list_for_each_entry_continue(
1712 + pginfo->u.phy.next_buf; 1691 chunk, (&(pginfo->u.usr.region->chunk_list)), list) {
1713 num_hw = NUM_CHUNKS((pbuf->addr % EHCA_PAGESIZE) + 1692 for (i = pginfo->u.usr.next_nmap; i < chunk->nmap; ) {
1714 pbuf->size, EHCA_PAGESIZE); 1693 pgaddr = page_to_pfn(chunk->page_list[i].page)
1715 offs_hw = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; 1694 << PAGE_SHIFT ;
1716 while (pginfo->next_hwpage < offs_hw + num_hw) { 1695 *kpage = phys_to_abs(pgaddr +
1717 /* sanity check */ 1696 (pginfo->next_hwpage *
1718 if ((pginfo->kpage_cnt >= pginfo->num_kpages) || 1697 EHCA_PAGESIZE));
1719 (pginfo->hwpage_cnt >= pginfo->num_hwpages)) {
1720 ehca_gen_err("kpage_cnt >= num_kpages, "
1721 "kpage_cnt=%lx "
1722 "num_kpages=%lx "
1723 "hwpage_cnt=%lx "
1724 "num_hwpages=%lx i=%x",
1725 pginfo->kpage_cnt,
1726 pginfo->num_kpages,
1727 pginfo->hwpage_cnt,
1728 pginfo->num_hwpages, i);
1729 ret = -EFAULT;
1730 goto ehca_set_pagebuf_exit0;
1731 }
1732 *kpage = phys_to_abs(
1733 (pbuf->addr & EHCA_PAGEMASK)
1734 + (pginfo->next_hwpage * EHCA_PAGESIZE));
1735 if ( !(*kpage) && pbuf->addr ) {
1736 ehca_gen_err("pbuf->addr=%lx "
1737 "pbuf->size=%lx "
1738 "next_hwpage=%lx", pbuf->addr,
1739 pbuf->size,
1740 pginfo->next_hwpage);
1741 ret = -EFAULT;
1742 goto ehca_set_pagebuf_exit0;
1743 }
1744 (pginfo->hwpage_cnt)++;
1745 (pginfo->next_hwpage)++;
1746 if (pginfo->next_hwpage %
1747 (PAGE_SIZE / EHCA_PAGESIZE) == 0)
1748 (pginfo->kpage_cnt)++;
1749 kpage++;
1750 i++;
1751 if (i >= number) break;
1752 }
1753 if (pginfo->next_hwpage >= offs_hw + num_hw) {
1754 (pginfo->u.phy.next_buf)++;
1755 pginfo->next_hwpage = 0;
1756 }
1757 }
1758 } else if (pginfo->type == EHCA_MR_PGI_USER) {
1759 /* loop over desired chunk entries */
1760 chunk = pginfo->u.usr.next_chunk;
1761 prev_chunk = pginfo->u.usr.next_chunk;
1762 list_for_each_entry_continue(chunk,
1763 (&(pginfo->u.usr.region->chunk_list)),
1764 list) {
1765 for (i = pginfo->u.usr.next_nmap; i < chunk->nmap; ) {
1766 pgaddr = ( page_to_pfn(chunk->page_list[i].page)
1767 << PAGE_SHIFT );
1768 *kpage = phys_to_abs(pgaddr +
1769 (pginfo->next_hwpage *
1770 EHCA_PAGESIZE));
1771 if ( !(*kpage) ) {
1772 ehca_gen_err("pgaddr=%lx "
1773 "chunk->page_list[i]=%lx "
1774 "i=%x next_hwpage=%lx mr=%p",
1775 pgaddr,
1776 (u64)sg_dma_address(
1777 &chunk->
1778 page_list[i]),
1779 i, pginfo->next_hwpage, e_mr);
1780 ret = -EFAULT;
1781 goto ehca_set_pagebuf_exit0;
1782 }
1783 (pginfo->hwpage_cnt)++;
1784 (pginfo->next_hwpage)++;
1785 kpage++;
1786 if (pginfo->next_hwpage %
1787 (PAGE_SIZE / EHCA_PAGESIZE) == 0) {
1788 (pginfo->kpage_cnt)++;
1789 (pginfo->u.usr.next_nmap)++;
1790 pginfo->next_hwpage = 0;
1791 i++;
1792 }
1793 j++;
1794 if (j >= number) break;
1795 }
1796 if ((pginfo->u.usr.next_nmap >= chunk->nmap) &&
1797 (j >= number)) {
1798 pginfo->u.usr.next_nmap = 0;
1799 prev_chunk = chunk;
1800 break;
1801 } else if (pginfo->u.usr.next_nmap >= chunk->nmap) {
1802 pginfo->u.usr.next_nmap = 0;
1803 prev_chunk = chunk;
1804 } else if (j >= number)
1805 break;
1806 else
1807 prev_chunk = chunk;
1808 }
1809 pginfo->u.usr.next_chunk =
1810 list_prepare_entry(prev_chunk,
1811 (&(pginfo->u.usr.region->chunk_list)),
1812 list);
1813 } else if (pginfo->type == EHCA_MR_PGI_FMR) {
1814 /* loop over desired page_list entries */
1815 fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem;
1816 for (i = 0; i < number; i++) {
1817 *kpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) +
1818 pginfo->next_hwpage * EHCA_PAGESIZE);
1819 if ( !(*kpage) ) { 1698 if ( !(*kpage) ) {
1820 ehca_gen_err("*fmrlist=%lx fmrlist=%p " 1699 ehca_gen_err("pgaddr=%lx "
1821 "next_listelem=%lx next_hwpage=%lx", 1700 "chunk->page_list[i]=%lx "
1822 *fmrlist, fmrlist, 1701 "i=%x next_hwpage=%lx",
1823 pginfo->u.fmr.next_listelem, 1702 pgaddr, (u64)sg_dma_address(
1824 pginfo->next_hwpage); 1703 &chunk->page_list[i]),
1825 ret = -EFAULT; 1704 i, pginfo->next_hwpage);
1826 goto ehca_set_pagebuf_exit0; 1705 return -EFAULT;
1827 } 1706 }
1828 (pginfo->hwpage_cnt)++; 1707 (pginfo->hwpage_cnt)++;
1829 (pginfo->next_hwpage)++; 1708 (pginfo->next_hwpage)++;
1830 kpage++; 1709 kpage++;
1831 if (pginfo->next_hwpage % 1710 if (pginfo->next_hwpage %
1832 (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { 1711 (PAGE_SIZE / EHCA_PAGESIZE) == 0) {
1833 (pginfo->kpage_cnt)++; 1712 (pginfo->kpage_cnt)++;
1834 (pginfo->u.fmr.next_listelem)++; 1713 (pginfo->u.usr.next_nmap)++;
1835 fmrlist++;
1836 pginfo->next_hwpage = 0; 1714 pginfo->next_hwpage = 0;
1715 i++;
1837 } 1716 }
1717 j++;
1718 if (j >= number) break;
1838 } 1719 }
1839 } else { 1720 if ((pginfo->u.usr.next_nmap >= chunk->nmap) &&
1840 ehca_gen_err("bad pginfo->type=%x", pginfo->type); 1721 (j >= number)) {
1841 ret = -EFAULT; 1722 pginfo->u.usr.next_nmap = 0;
1842 goto ehca_set_pagebuf_exit0; 1723 prev_chunk = chunk;
1724 break;
1725 } else if (pginfo->u.usr.next_nmap >= chunk->nmap) {
1726 pginfo->u.usr.next_nmap = 0;
1727 prev_chunk = chunk;
1728 } else if (j >= number)
1729 break;
1730 else
1731 prev_chunk = chunk;
1843 } 1732 }
1844 1733 pginfo->u.usr.next_chunk =
1845ehca_set_pagebuf_exit0: 1734 list_prepare_entry(prev_chunk,
1846 if (ret) 1735 (&(pginfo->u.usr.region->chunk_list)),
1847 ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_kpages=%lx " 1736 list);
1848 "num_hwpages=%lx next_buf=%lx next_hwpage=%lx number=%x "
1849 "kpage=%p kpage_cnt=%lx hwpage_cnt=%lx i=%x "
1850 "next_listelem=%lx region=%p next_chunk=%p "
1851 "next_nmap=%lx", ret, e_mr, pginfo, pginfo->type,
1852 pginfo->num_kpages, pginfo->num_hwpages,
1853 pginfo->u.phy.next_buf, pginfo->next_hwpage, number, kpage,
1854 pginfo->kpage_cnt, pginfo->hwpage_cnt, i,
1855 pginfo->u.fmr.next_listelem, pginfo->u.usr.region,
1856 pginfo->u.usr.next_chunk, pginfo->u.usr.next_nmap);
1857 return ret; 1737 return ret;
1858} /* end ehca_set_pagebuf() */ 1738}
1859
1860/*----------------------------------------------------------------------*/
1861 1739
1862/* setup 1 page from page info page buffer */ 1740int ehca_set_pagebuf_phys(struct ehca_mr_pginfo *pginfo,
1863int ehca_set_pagebuf_1(struct ehca_mr *e_mr, 1741 u32 number,
1864 struct ehca_mr_pginfo *pginfo, 1742 u64 *kpage)
1865 u64 *rpage)
1866{ 1743{
1867 int ret = 0; 1744 int ret = 0;
1868 struct ib_phys_buf *tmp_pbuf; 1745 struct ib_phys_buf *pbuf;
1869 u64 *fmrlist; 1746 u64 num_hw, offs_hw;
1870 struct ib_umem_chunk *chunk; 1747 u32 i = 0;
1871 struct ib_umem_chunk *prev_chunk; 1748
1872 u64 pgaddr, num_hw, offs_hw; 1749 /* loop over desired phys_buf_array entries */
1873 1750 while (i < number) {
1874 if (pginfo->type == EHCA_MR_PGI_PHYS) { 1751 pbuf = pginfo->u.phy.phys_buf_array + pginfo->u.phy.next_buf;
1875 /* sanity check */ 1752 num_hw = NUM_CHUNKS((pbuf->addr % EHCA_PAGESIZE) +
1876 if ((pginfo->kpage_cnt >= pginfo->num_kpages) || 1753 pbuf->size, EHCA_PAGESIZE);
1877 (pginfo->hwpage_cnt >= pginfo->num_hwpages)) { 1754 offs_hw = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE;
1878 ehca_gen_err("kpage_cnt >= num_hwpages, kpage_cnt=%lx " 1755 while (pginfo->next_hwpage < offs_hw + num_hw) {
1879 "num_hwpages=%lx hwpage_cnt=%lx num_hwpages=%lx", 1756 /* sanity check */
1880 pginfo->kpage_cnt, pginfo->num_kpages, 1757 if ((pginfo->kpage_cnt >= pginfo->num_kpages) ||
1881 pginfo->hwpage_cnt, pginfo->num_hwpages); 1758 (pginfo->hwpage_cnt >= pginfo->num_hwpages)) {
1882 ret = -EFAULT; 1759 ehca_gen_err("kpage_cnt >= num_kpages, "
1883 goto ehca_set_pagebuf_1_exit0; 1760 "kpage_cnt=%lx num_kpages=%lx "
1884 } 1761 "hwpage_cnt=%lx "
1885 tmp_pbuf = pginfo->u.phy.phys_buf_array + pginfo->u.phy.next_buf; 1762 "num_hwpages=%lx i=%x",
1886 num_hw = NUM_CHUNKS((tmp_pbuf->addr % EHCA_PAGESIZE) + 1763 pginfo->kpage_cnt,
1887 tmp_pbuf->size, EHCA_PAGESIZE); 1764 pginfo->num_kpages,
1888 offs_hw = (tmp_pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE; 1765 pginfo->hwpage_cnt,
1889 *rpage = phys_to_abs((tmp_pbuf->addr & EHCA_PAGEMASK) + 1766 pginfo->num_hwpages, i);
1890 (pginfo->next_hwpage * EHCA_PAGESIZE)); 1767 return -EFAULT;
1891 if ( !(*rpage) && tmp_pbuf->addr ) { 1768 }
1892 ehca_gen_err("tmp_pbuf->addr=%lx" 1769 *kpage = phys_to_abs(
1893 " tmp_pbuf->size=%lx next_hwpage=%lx", 1770 (pbuf->addr & EHCA_PAGEMASK)
1894 tmp_pbuf->addr, tmp_pbuf->size, 1771 + (pginfo->next_hwpage * EHCA_PAGESIZE));
1895 pginfo->next_hwpage); 1772 if ( !(*kpage) && pbuf->addr ) {
1896 ret = -EFAULT; 1773 ehca_gen_err("pbuf->addr=%lx "
1897 goto ehca_set_pagebuf_1_exit0; 1774 "pbuf->size=%lx "
1898 } 1775 "next_hwpage=%lx", pbuf->addr,
1899 (pginfo->hwpage_cnt)++; 1776 pbuf->size,
1900 (pginfo->next_hwpage)++; 1777 pginfo->next_hwpage);
1901 if (pginfo->next_hwpage % (PAGE_SIZE / EHCA_PAGESIZE) == 0) 1778 return -EFAULT;
1902 (pginfo->kpage_cnt)++;
1903 if (pginfo->next_hwpage >= offs_hw + num_hw) {
1904 (pginfo->u.phy.next_buf)++;
1905 pginfo->next_hwpage = 0;
1906 }
1907 } else if (pginfo->type == EHCA_MR_PGI_USER) {
1908 chunk = pginfo->u.usr.next_chunk;
1909 prev_chunk = pginfo->u.usr.next_chunk;
1910 list_for_each_entry_continue(chunk,
1911 (&(pginfo->u.usr.region->chunk_list)),
1912 list) {
1913 pgaddr = ( page_to_pfn(chunk->page_list[
1914 pginfo->u.usr.next_nmap].page)
1915 << PAGE_SHIFT);
1916 *rpage = phys_to_abs(pgaddr +
1917 (pginfo->next_hwpage * EHCA_PAGESIZE));
1918 if ( !(*rpage) ) {
1919 ehca_gen_err("pgaddr=%lx chunk->page_list[]=%lx"
1920 " next_nmap=%lx next_hwpage=%lx mr=%p",
1921 pgaddr, (u64)sg_dma_address(
1922 &chunk->page_list[
1923 pginfo->u.usr.
1924 next_nmap]),
1925 pginfo->u.usr.next_nmap, pginfo->next_hwpage,
1926 e_mr);
1927 ret = -EFAULT;
1928 goto ehca_set_pagebuf_1_exit0;
1929 } 1779 }
1930 (pginfo->hwpage_cnt)++; 1780 (pginfo->hwpage_cnt)++;
1931 (pginfo->next_hwpage)++; 1781 (pginfo->next_hwpage)++;
1932 if (pginfo->next_hwpage % 1782 if (pginfo->next_hwpage %
1933 (PAGE_SIZE / EHCA_PAGESIZE) == 0) { 1783 (PAGE_SIZE / EHCA_PAGESIZE) == 0)
1934 (pginfo->kpage_cnt)++; 1784 (pginfo->kpage_cnt)++;
1935 (pginfo->u.usr.next_nmap)++; 1785 kpage++;
1936 pginfo->next_hwpage = 0; 1786 i++;
1937 } 1787 if (i >= number) break;
1938 if (pginfo->u.usr.next_nmap >= chunk->nmap) {
1939 pginfo->u.usr.next_nmap = 0;
1940 prev_chunk = chunk;
1941 }
1942 break;
1943 } 1788 }
1944 pginfo->u.usr.next_chunk = 1789 if (pginfo->next_hwpage >= offs_hw + num_hw) {
1945 list_prepare_entry(prev_chunk, 1790 (pginfo->u.phy.next_buf)++;
1946 (&(pginfo->u.usr.region->chunk_list)), 1791 pginfo->next_hwpage = 0;
1947 list); 1792 }
1948 } else if (pginfo->type == EHCA_MR_PGI_FMR) { 1793 }
1949 fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem; 1794 return ret;
1950 *rpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) + 1795}
1796
1797int ehca_set_pagebuf_fmr(struct ehca_mr_pginfo *pginfo,
1798 u32 number,
1799 u64 *kpage)
1800{
1801 int ret = 0;
1802 u64 *fmrlist;
1803 u32 i;
1804
1805 /* loop over desired page_list entries */
1806 fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem;
1807 for (i = 0; i < number; i++) {
1808 *kpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) +
1951 pginfo->next_hwpage * EHCA_PAGESIZE); 1809 pginfo->next_hwpage * EHCA_PAGESIZE);
1952 if ( !(*rpage) ) { 1810 if ( !(*kpage) ) {
1953 ehca_gen_err("*fmrlist=%lx fmrlist=%p " 1811 ehca_gen_err("*fmrlist=%lx fmrlist=%p "
1954 "next_listelem=%lx next_hwpage=%lx", 1812 "next_listelem=%lx next_hwpage=%lx",
1955 *fmrlist, fmrlist, pginfo->u.fmr.next_listelem, 1813 *fmrlist, fmrlist,
1814 pginfo->u.fmr.next_listelem,
1956 pginfo->next_hwpage); 1815 pginfo->next_hwpage);
1957 ret = -EFAULT; 1816 return -EFAULT;
1958 goto ehca_set_pagebuf_1_exit0;
1959 } 1817 }
1960 (pginfo->hwpage_cnt)++; 1818 (pginfo->hwpage_cnt)++;
1961 (pginfo->next_hwpage)++; 1819 (pginfo->next_hwpage)++;
1820 kpage++;
1962 if (pginfo->next_hwpage % 1821 if (pginfo->next_hwpage %
1963 (e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) { 1822 (pginfo->u.fmr.fmr_pgsize / EHCA_PAGESIZE) == 0) {
1964 (pginfo->kpage_cnt)++; 1823 (pginfo->kpage_cnt)++;
1965 (pginfo->u.fmr.next_listelem)++; 1824 (pginfo->u.fmr.next_listelem)++;
1825 fmrlist++;
1966 pginfo->next_hwpage = 0; 1826 pginfo->next_hwpage = 0;
1967 } 1827 }
1968 } else { 1828 }
1829 return ret;
1830}
1831
1832/* setup page buffer from page info */
1833int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo,
1834 u32 number,
1835 u64 *kpage)
1836{
1837 int ret;
1838
1839 switch (pginfo->type) {
1840 case EHCA_MR_PGI_PHYS:
1841 ret = ehca_set_pagebuf_phys(pginfo, number, kpage);
1842 break;
1843 case EHCA_MR_PGI_USER:
1844 ret = ehca_set_pagebuf_user1(pginfo, number, kpage);
1845 break;
1846 case EHCA_MR_PGI_FMR:
1847 ret = ehca_set_pagebuf_fmr(pginfo, number, kpage);
1848 break;
1849 default:
1969 ehca_gen_err("bad pginfo->type=%x", pginfo->type); 1850 ehca_gen_err("bad pginfo->type=%x", pginfo->type);
1970 ret = -EFAULT; 1851 ret = -EFAULT;
1971 goto ehca_set_pagebuf_1_exit0; 1852 break;
1972 } 1853 }
1973
1974ehca_set_pagebuf_1_exit0:
1975 if (ret)
1976 ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_kpages=%lx "
1977 "num_hwpages=%lx next_buf=%lx next_hwpage=%lx rpage=%p "
1978 "kpage_cnt=%lx hwpage_cnt=%lx next_listelem=%lx "
1979 "region=%p next_chunk=%p next_nmap=%lx", ret, e_mr,
1980 pginfo, pginfo->type, pginfo->num_kpages,
1981 pginfo->num_hwpages, pginfo->u.phy.next_buf, pginfo->next_hwpage,
1982 rpage, pginfo->kpage_cnt, pginfo->hwpage_cnt,
1983 pginfo->u.fmr.next_listelem, pginfo->u.usr.region,
1984 pginfo->u.usr.next_chunk, pginfo->u.usr.next_nmap);
1985 return ret; 1854 return ret;
1986} /* end ehca_set_pagebuf_1() */ 1855} /* end ehca_set_pagebuf() */
1987 1856
1988/*----------------------------------------------------------------------*/ 1857/*----------------------------------------------------------------------*/
1989 1858
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-12 20:56:57 -0500