From nobody Thu Mar 10 23:51:29 2022 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id D8A2D19FB419; Thu, 10 Mar 2022 23:51:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KF5SL1DFkz3lYq; Thu, 10 Mar 2022 23:51:30 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1646956290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=AqemVm/4VgHCq8qXzBQ5zqp9rG+G+Dbs53ySXFrHeAg=; b=AA3rJ9eej57cD9CwZInzv5pDAEy2OZzeuteLkmOedYysbOw6zIm1R/5Xde9ah4U0yBg+ao 5951c8EWTTSfZM1ruIrjtx8WdIvP607C8+dSI0BlKodkA9IjQlSQiz54d5JDMTvewGizxH foQ1gCs/qrQpVi4IvTA+zHCVnONAj9vWzLJxolJ7ceOUIG3Z01K4GnCCmgJGPUpbvJbA3p SFv7L9inme/fmqm1LBM2VBykRKZYzkmvwMu8KDHxO+3Wi0qhGHFvT423iu+JR2TQNG0uq9 1BXs3RSz/MZHBqHgbY3umhCSE8n80FyMG+U5QcYQ8hdGnMl5bcisArYsIBMjbA== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id CBDBC68D6; Thu, 10 Mar 2022 23:51:29 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 22ANpTV3036966; Thu, 10 Mar 2022 23:51:29 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 22ANpTvp036965; Thu, 10 Mar 2022 23:51:29 GMT (envelope-from git) Date: Thu, 10 Mar 2022 23:51:29 GMT Message-Id: <202203102351.22ANpTvp036965@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: John Baldwin Subject: git: 2beaefe88443 - main - cxgbei: Support unmapped I/O requests. List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: jhb X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 2beaefe88443f0644d65b3ae0ac2f1ccff51e748 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1646956290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=AqemVm/4VgHCq8qXzBQ5zqp9rG+G+Dbs53ySXFrHeAg=; b=xAwtIUOHRtAlw/lJSSoLqpGJwdBEUzOvspF5DRWGtneQnlXoON2lyRewe+46bZRgts5xQo YZ/d68vLrah9IT1kpj3+prLQwLqWMhOK1g1EmKXdzdQKQM5l8v6s5k+ZrKNmmb6LzCGpNX f6hQnHqbxet4zZlD1EgBe9mMtS4yVrMKFA+SOYO5IEjkg3N4bdhHUMp5ixxwEAs3B4MZal FqfwmObIT8kRZgUuDMeb0WmwODLYhRDyb+ee1M+Z1r6uLFy7HF5OwKB0XQJrpC201Mv250 UfGWPjgPZWgFL21PMNXLF8Yif/R3QJmPWueNfw0EvGgnzSxLtecp80oaml5r+g== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1646956290; a=rsa-sha256; cv=none; b=s1YO/IQCKnKyUvB/ndK+g+ksQClfxA+3FWGIEkNkIWnBANEF1o0QwvGOdTYnEGK5VPkoXf K25zjbR+FJJc0ENd3JZ1iM8QgHVzRk135Wn6Ain3hodDq7FUc8zBTdKQQ2x3XcMlknDg3S /9AU4LnbPy7gzaJZ0Mo7eFH+H59bW4ZnlpofGRysigjBGT+Txjo5ZSNIdPEDRVsuAmeFF/ bo7YCMSAk/3DcTZ2ZLy7mHYIQICN6ohypaS4MuYrmYLJ61RpmQdd9rgnM3JyIYF1Hrgqis dLJ84pQ47Wck7B6bjOaz8LPub22CsbwAavRhzGwZ5HNsj2WugAiGtw+2OCt5Tw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=2beaefe88443f0644d65b3ae0ac2f1ccff51e748 commit 2beaefe88443f0644d65b3ae0ac2f1ccff51e748 Author: John Baldwin AuthorDate: 2022-03-10 23:50:52 +0000 Commit: John Baldwin CommitDate: 2022-03-10 23:50:52 +0000 cxgbei: Support unmapped I/O requests. - Add icl_pdu_append_bio and icl_pdu_get_bio methods. - Add new page pod routines for allocating and writing page pods for unmapped bio requests. Use these new routines for setting up DDP for iSCSI tasks with a SCSI I/O CCB which uses CAM_DATA_BIO. - When ICL_NOCOPY is used to append data from an unmapped I/O request to a PDU, construct unmapped mbufs from the relevant pages backing the struct bio. This also requires changes in the t4_push_pdus path to support unmapped mbufs. Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D34383 --- sys/dev/cxgbe/cxgbei/icl_cxgbei.c | 344 +++++++++++++++++++++++++++++++------- sys/dev/cxgbe/tom/t4_cpl_io.c | 17 +- sys/dev/cxgbe/tom/t4_ddp.c | 126 ++++++++++++-- sys/dev/cxgbe/tom/t4_tom.h | 5 + 4 files changed, 416 insertions(+), 76 deletions(-) diff --git a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c index 296d4f2d270a..a3dbf4cb88a2 100644 --- a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c +++ b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); #ifdef TCP_OFFLOAD #include +#include #include #include #include @@ -61,6 +62,7 @@ __FBSDID("$FreeBSD$"); #include #include #include +#include #include #include #include @@ -132,7 +134,9 @@ static volatile u_int icl_cxgbei_ncons; static icl_conn_new_pdu_t icl_cxgbei_conn_new_pdu; static icl_conn_pdu_data_segment_length_t icl_cxgbei_conn_pdu_data_segment_length; +static icl_conn_pdu_append_bio_t icl_cxgbei_conn_pdu_append_bio; static icl_conn_pdu_append_data_t icl_cxgbei_conn_pdu_append_data; +static icl_conn_pdu_get_bio_t icl_cxgbei_conn_pdu_get_bio; static icl_conn_pdu_get_data_t icl_cxgbei_conn_pdu_get_data; static icl_conn_pdu_queue_t icl_cxgbei_conn_pdu_queue; static icl_conn_pdu_queue_cb_t icl_cxgbei_conn_pdu_queue_cb; @@ -149,7 +153,9 @@ static kobj_method_t icl_cxgbei_methods[] = { KOBJMETHOD(icl_conn_pdu_free, icl_cxgbei_conn_pdu_free), KOBJMETHOD(icl_conn_pdu_data_segment_length, icl_cxgbei_conn_pdu_data_segment_length), + KOBJMETHOD(icl_conn_pdu_append_bio, icl_cxgbei_conn_pdu_append_bio), KOBJMETHOD(icl_conn_pdu_append_data, icl_cxgbei_conn_pdu_append_data), + KOBJMETHOD(icl_conn_pdu_get_bio, icl_cxgbei_conn_pdu_get_bio), KOBJMETHOD(icl_conn_pdu_get_data, icl_cxgbei_conn_pdu_get_data), KOBJMETHOD(icl_conn_pdu_queue, icl_cxgbei_conn_pdu_queue), KOBJMETHOD(icl_conn_pdu_queue_cb, icl_cxgbei_conn_pdu_queue_cb), @@ -552,6 +558,189 @@ out: kthread_exit(); } +static void +cxgbei_free_mext_pg(struct mbuf *m) +{ + struct icl_cxgbei_pdu *icp; + + M_ASSERTEXTPG(m); + + /* + * Nothing to do for the pages; they are owned by the PDU / + * I/O request. + */ + + /* Drop reference on the PDU. */ + icp = m->m_ext.ext_arg1; + if (atomic_fetchadd_int(&icp->ref_cnt, -1) == 1) + icl_cxgbei_pdu_call_cb(&icp->ip); +} + +static struct mbuf * +cxgbei_getm(size_t len, int flags) +{ + struct mbuf *m, *m0, *m_tail; + + m_tail = m0 = NULL; + + /* Allocate as jumbo mbufs of size MJUM16BYTES. */ + while (len >= MJUM16BYTES) { + m = m_getjcl(M_NOWAIT, MT_DATA, 0, MJUM16BYTES); + if (__predict_false(m == NULL)) { + if ((flags & M_WAITOK) != 0) { + /* Fall back to non-jumbo mbufs. */ + break; + } + return (NULL); + } + if (m0 == NULL) { + m0 = m_tail = m; + } else { + m_tail->m_next = m; + m_tail = m; + } + len -= MJUM16BYTES; + } + + /* Allocate mbuf chain for the remaining data. */ + if (len != 0) { + m = m_getm2(NULL, len, flags, MT_DATA, 0); + if (__predict_false(m == NULL)) { + m_freem(m0); + return (NULL); + } + if (m0 == NULL) + m0 = m; + else + m_tail->m_next = m; + } + + return (m0); +} + +int +icl_cxgbei_conn_pdu_append_bio(struct icl_conn *ic, struct icl_pdu *ip, + struct bio *bp, size_t offset, size_t len, int flags) +{ + struct icl_cxgbei_pdu *icp = ip_to_icp(ip); + struct mbuf *m, *m_tail; + vm_offset_t vaddr; + size_t page_offset, todo, mtodo; + boolean_t mapped; + int i; + + MPASS(icp->icp_signature == CXGBEI_PDU_SIGNATURE); + MPASS(ic == ip->ip_conn); + KASSERT(len > 0, ("%s: len is %jd", __func__, (intmax_t)len)); + + m_tail = ip->ip_data_mbuf; + if (m_tail != NULL) + for (; m_tail->m_next != NULL; m_tail = m_tail->m_next) + ; + + MPASS(bp->bio_flags & BIO_UNMAPPED); + if (offset < PAGE_SIZE - bp->bio_ma_offset) { + page_offset = bp->bio_ma_offset + offset; + i = 0; + } else { + offset -= PAGE_SIZE - bp->bio_ma_offset; + for (i = 1; offset >= PAGE_SIZE; i++) + offset -= PAGE_SIZE; + page_offset = offset; + } + + if (flags & ICL_NOCOPY) { + m = NULL; + while (len > 0) { + if (m == NULL) { + m = mb_alloc_ext_pgs(flags & ~ICL_NOCOPY, + cxgbei_free_mext_pg); + if (__predict_false(m == NULL)) + return (ENOMEM); + atomic_add_int(&icp->ref_cnt, 1); + m->m_ext.ext_arg1 = icp; + m->m_epg_1st_off = page_offset; + } + + todo = MIN(len, PAGE_SIZE - page_offset); + + m->m_epg_pa[m->m_epg_npgs] = + VM_PAGE_TO_PHYS(bp->bio_ma[i]); + m->m_epg_npgs++; + m->m_epg_last_len = todo; + m->m_len += todo; + m->m_ext.ext_size += PAGE_SIZE; + MBUF_EXT_PGS_ASSERT_SANITY(m); + + if (m->m_epg_npgs == MBUF_PEXT_MAX_PGS) { + if (m_tail != NULL) + m_tail->m_next = m; + else + ip->ip_data_mbuf = m; + m_tail = m; + ip->ip_data_len += m->m_len; + m = NULL; + } + + page_offset = 0; + len -= todo; + i++; + } + + if (m != NULL) { + if (m_tail != NULL) + m_tail->m_next = m; + else + ip->ip_data_mbuf = m; + ip->ip_data_len += m->m_len; + } + return (0); + } + + m = cxgbei_getm(len, flags); + if (__predict_false(m == NULL)) + return (ENOMEM); + + if (ip->ip_data_mbuf == NULL) { + ip->ip_data_mbuf = m; + ip->ip_data_len = len; + } else { + m_tail->m_next = m; + ip->ip_data_len += len; + } + + while (len > 0) { + todo = MIN(len, PAGE_SIZE - page_offset); + + mapped = pmap_map_io_transient(bp->bio_ma + i, &vaddr, 1, + FALSE); + + do { + mtodo = min(todo, M_SIZE(m) - m->m_len); + memcpy(mtod(m, char *) + m->m_len, (char *)vaddr + + page_offset, mtodo); + m->m_len += mtodo; + if (m->m_len == M_SIZE(m)) + m = m->m_next; + page_offset += mtodo; + todo -= mtodo; + } while (todo > 0); + + if (__predict_false(mapped)) + pmap_unmap_io_transient(bp->bio_ma + 1, &vaddr, 1, + FALSE); + + page_offset = 0; + len -= todo; + i++; + } + + MPASS(ip->ip_data_len <= max(ic->ic_max_send_data_segment_length, + ic->ic_hw_isomax)); + + return (0); +} + int icl_cxgbei_conn_pdu_append_data(struct icl_conn *ic, struct icl_pdu *ip, const void *addr, size_t len, int flags) @@ -592,58 +781,74 @@ icl_cxgbei_conn_pdu_append_data(struct icl_conn *ic, struct icl_pdu *ip, return (0); } - src = (const char *)addr; + m = cxgbei_getm(len, flags); + if (__predict_false(m == NULL)) + return (ENOMEM); - /* Allocate as jumbo mbufs of size MJUM16BYTES. */ - while (len >= MJUM16BYTES) { - m = m_getjcl(M_NOWAIT, MT_DATA, 0, MJUM16BYTES); - if (__predict_false(m == NULL)) { - if ((flags & M_WAITOK) != 0) { - /* Fall back to non-jumbo mbufs. */ - break; - } - return (ENOMEM); - } - memcpy(mtod(m, void *), src, MJUM16BYTES); - m->m_len = MJUM16BYTES; - if (ip->ip_data_mbuf == NULL) { - ip->ip_data_mbuf = m_tail = m; - ip->ip_data_len = MJUM16BYTES; - } else { - m_tail->m_next = m; - m_tail = m_tail->m_next; - ip->ip_data_len += MJUM16BYTES; - } - src += MJUM16BYTES; - len -= MJUM16BYTES; + if (ip->ip_data_mbuf == NULL) { + ip->ip_data_mbuf = m; + ip->ip_data_len = len; + } else { + m_tail->m_next = m; + ip->ip_data_len += len; } - - /* Allocate mbuf chain for the remaining data. */ - if (len != 0) { - m = m_getm2(NULL, len, flags, MT_DATA, 0); - if (__predict_false(m == NULL)) - return (ENOMEM); - if (ip->ip_data_mbuf == NULL) { - ip->ip_data_mbuf = m; - ip->ip_data_len = len; - } else { - m_tail->m_next = m; - ip->ip_data_len += len; - } - for (; m != NULL; m = m->m_next) { - m->m_len = min(len, M_SIZE(m)); - memcpy(mtod(m, void *), src, m->m_len); - src += m->m_len; - len -= m->m_len; - } - MPASS(len == 0); + src = (const char *)addr; + for (; m != NULL; m = m->m_next) { + m->m_len = min(len, M_SIZE(m)); + memcpy(mtod(m, void *), src, m->m_len); + src += m->m_len; + len -= m->m_len; } + MPASS(len == 0); + MPASS(ip->ip_data_len <= max(ic->ic_max_send_data_segment_length, ic->ic_hw_isomax)); return (0); } +void +icl_cxgbei_conn_pdu_get_bio(struct icl_conn *ic, struct icl_pdu *ip, + size_t pdu_off, struct bio *bp, size_t bio_off, size_t len) +{ + struct icl_cxgbei_pdu *icp = ip_to_icp(ip); + vm_offset_t vaddr; + size_t page_offset, todo; + boolean_t mapped; + int i; + + if (icp->icp_flags & ICPF_RX_DDP) + return; /* data is DDP'ed, no need to copy */ + + MPASS(bp->bio_flags & BIO_UNMAPPED); + if (bio_off < PAGE_SIZE - bp->bio_ma_offset) { + page_offset = bp->bio_ma_offset + bio_off; + i = 0; + } else { + bio_off -= PAGE_SIZE - bp->bio_ma_offset; + for (i = 1; bio_off >= PAGE_SIZE; i++) + bio_off -= PAGE_SIZE; + page_offset = bio_off; + } + + while (len > 0) { + todo = MIN(len, PAGE_SIZE - page_offset); + + mapped = pmap_map_io_transient(bp->bio_ma + i, &vaddr, 1, + FALSE); + m_copydata(ip->ip_data_mbuf, pdu_off, todo, (char *)vaddr + + page_offset); + if (__predict_false(mapped)) + pmap_unmap_io_transient(bp->bio_ma + 1, &vaddr, 1, + FALSE); + + page_offset = 0; + pdu_off += todo; + len -= todo; + i++; + } +} + void icl_cxgbei_conn_pdu_get_data(struct icl_conn *ic, struct icl_pdu *ip, size_t off, void *addr, size_t len) @@ -716,7 +921,7 @@ icl_cxgbei_new_conn(const char *name, struct mtx *lock) #endif ic->ic_name = name; ic->ic_offload = "cxgbei"; - ic->ic_unmapped = false; + ic->ic_unmapped = true; CTR2(KTR_CXGBE, "%s: icc %p", __func__, icc); @@ -1251,22 +1456,45 @@ no_ddp: } prsv = &ddp->prsv; - /* XXX add support for all CAM_DATA_ types */ - MPASS((csio->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_VADDR); - rc = t4_alloc_page_pods_for_buf(pr, (vm_offset_t)csio->data_ptr, - csio->dxfer_len, prsv); - if (rc != 0) { - free(ddp, M_CXGBEI); - goto no_ddp; - } - mbufq_init(&mq, INT_MAX); - rc = t4_write_page_pods_for_buf(sc, toep, prsv, - (vm_offset_t)csio->data_ptr, csio->dxfer_len, &mq); - if (__predict_false(rc != 0)) { - mbufq_drain(&mq); - t4_free_page_pods(prsv); + switch (csio->ccb_h.flags & CAM_DATA_MASK) { + case CAM_DATA_BIO: + rc = t4_alloc_page_pods_for_bio(pr, + (struct bio *)csio->data_ptr, prsv); + if (rc != 0) { + free(ddp, M_CXGBEI); + goto no_ddp; + } + + rc = t4_write_page_pods_for_bio(sc, toep, prsv, + (struct bio *)csio->data_ptr, &mq); + if (__predict_false(rc != 0)) { + mbufq_drain(&mq); + t4_free_page_pods(prsv); + free(ddp, M_CXGBEI); + goto no_ddp; + } + break; + case CAM_DATA_VADDR: + rc = t4_alloc_page_pods_for_buf(pr, (vm_offset_t)csio->data_ptr, + csio->dxfer_len, prsv); + if (rc != 0) { + free(ddp, M_CXGBEI); + goto no_ddp; + } + + rc = t4_write_page_pods_for_buf(sc, toep, prsv, + (vm_offset_t)csio->data_ptr, csio->dxfer_len, &mq); + if (__predict_false(rc != 0)) { + mbufq_drain(&mq); + t4_free_page_pods(prsv); + free(ddp, M_CXGBEI); + goto no_ddp; + } + break; + default: free(ddp, M_CXGBEI); + rc = EINVAL; goto no_ddp; } diff --git a/sys/dev/cxgbe/tom/t4_cpl_io.c b/sys/dev/cxgbe/tom/t4_cpl_io.c index 56bb7910b5c1..4c8b1fa27579 100644 --- a/sys/dev/cxgbe/tom/t4_cpl_io.c +++ b/sys/dev/cxgbe/tom/t4_cpl_io.c @@ -1002,7 +1002,7 @@ write_iscsi_mbuf_wr(struct toepcb *toep, struct mbuf *sndptr) int tx_credits, shove, npdu, wr_len; uint16_t iso_mss; static const u_int ulp_extra_len[] = {0, 4, 4, 8}; - bool iso; + bool iso, nomap_mbuf_seen; M_ASSERTPKTHDR(sndptr); @@ -1030,8 +1030,15 @@ write_iscsi_mbuf_wr(struct toepcb *toep, struct mbuf *sndptr) plen = 0; nsegs = 0; max_nsegs_1mbuf = 0; /* max # of SGL segments in any one mbuf */ + nomap_mbuf_seen = false; for (m = sndptr; m != NULL; m = m->m_next) { - int n = sglist_count(mtod(m, void *), m->m_len); + int n; + + if (m->m_flags & M_EXTPG) + n = sglist_count_mbuf_epg(m, mtod(m, vm_offset_t), + m->m_len); + else + n = sglist_count(mtod(m, void *), m->m_len); nsegs += n; plen += m->m_len; @@ -1040,9 +1047,11 @@ write_iscsi_mbuf_wr(struct toepcb *toep, struct mbuf *sndptr) * This mbuf would send us _over_ the nsegs limit. * Suspend tx because the PDU can't be sent out. */ - if (plen > max_imm && nsegs > max_nsegs) + if ((nomap_mbuf_seen || plen > max_imm) && nsegs > max_nsegs) return (NULL); + if (m->m_flags & M_EXTPG) + nomap_mbuf_seen = true; if (max_nsegs_1mbuf < n) max_nsegs_1mbuf = n; } @@ -1075,7 +1084,7 @@ write_iscsi_mbuf_wr(struct toepcb *toep, struct mbuf *sndptr) wr_len = sizeof(*txwr); if (iso) wr_len += sizeof(struct cpl_tx_data_iso); - if (plen <= max_imm) { + if (plen <= max_imm && !nomap_mbuf_seen) { /* Immediate data tx */ imm_data = plen; wr_len += plen; diff --git a/sys/dev/cxgbe/tom/t4_ddp.c b/sys/dev/cxgbe/tom/t4_ddp.c index 18c464b5c034..05bb903a28aa 100644 --- a/sys/dev/cxgbe/tom/t4_ddp.c +++ b/sys/dev/cxgbe/tom/t4_ddp.c @@ -34,6 +34,7 @@ __FBSDID("$FreeBSD$"); #include #include +#include #include #include #include @@ -887,14 +888,11 @@ alloc_page_pods(struct ppod_region *pr, u_int nppods, u_int pgsz_idx, return (0); } -int -t4_alloc_page_pods_for_ps(struct ppod_region *pr, struct pageset *ps) +static int +t4_alloc_page_pods_for_vmpages(struct ppod_region *pr, vm_page_t *pages, + int npages, struct ppod_reservation *prsv) { int i, hcf, seglen, idx, nppods; - struct ppod_reservation *prsv = &ps->prsv; - - KASSERT(prsv->prsv_nppods == 0, - ("%s: page pods already allocated", __func__)); /* * The DDP page size is unrelated to the VM page size. We combine @@ -904,11 +902,11 @@ t4_alloc_page_pods_for_ps(struct ppod_region *pr, struct pageset *ps) * the page list. */ hcf = 0; - for (i = 0; i < ps->npages; i++) { + for (i = 0; i < npages; i++) { seglen = PAGE_SIZE; - while (i < ps->npages - 1 && - VM_PAGE_TO_PHYS(ps->pages[i]) + PAGE_SIZE == - VM_PAGE_TO_PHYS(ps->pages[i + 1])) { + while (i < npages - 1 && + VM_PAGE_TO_PHYS(pages[i]) + PAGE_SIZE == + VM_PAGE_TO_PHYS(pages[i + 1])) { seglen += PAGE_SIZE; i++; } @@ -931,12 +929,35 @@ t4_alloc_page_pods_for_ps(struct ppod_region *pr, struct pageset *ps) have_pgsz: MPASS(idx <= M_PPOD_PGSZ); - nppods = pages_to_nppods(ps->npages, pr->pr_page_shift[idx]); + nppods = pages_to_nppods(npages, pr->pr_page_shift[idx]); if (alloc_page_pods(pr, nppods, idx, prsv) != 0) - return (0); + return (ENOMEM); MPASS(prsv->prsv_nppods > 0); - return (1); + return (0); +} + +int +t4_alloc_page_pods_for_ps(struct ppod_region *pr, struct pageset *ps) +{ + struct ppod_reservation *prsv = &ps->prsv; + + KASSERT(prsv->prsv_nppods == 0, + ("%s: page pods already allocated", __func__)); + + return (t4_alloc_page_pods_for_vmpages(pr, ps->pages, ps->npages, + prsv)); +} + +int +t4_alloc_page_pods_for_bio(struct ppod_region *pr, struct bio *bp, + struct ppod_reservation *prsv) +{ + + MPASS(bp->bio_flags & BIO_UNMAPPED); + + return (t4_alloc_page_pods_for_vmpages(pr, bp->bio_ma, bp->bio_ma_n, + prsv)); } int @@ -1189,6 +1210,83 @@ alloc_raw_wr_mbuf(int len) return (m); } +int +t4_write_page_pods_for_bio(struct adapter *sc, struct toepcb *toep, + struct ppod_reservation *prsv, struct bio *bp, struct mbufq *wrq) +{ + struct ulp_mem_io *ulpmc; + struct ulptx_idata *ulpsc; + struct pagepod *ppod; + int i, j, k, n, chunk, len, ddp_pgsz, idx; + u_int ppod_addr; + uint32_t cmd; + struct ppod_region *pr = prsv->prsv_pr; + vm_paddr_t pa; + struct mbuf *m; + + MPASS(bp->bio_flags & BIO_UNMAPPED); + + cmd = htobe32(V_ULPTX_CMD(ULP_TX_MEM_WRITE)); + if (is_t4(sc)) + cmd |= htobe32(F_ULP_MEMIO_ORDER); + else + cmd |= htobe32(F_T5_ULP_MEMIO_IMM); + ddp_pgsz = 1 << pr->pr_page_shift[G_PPOD_PGSZ(prsv->prsv_tag)]; + ppod_addr = pr->pr_start + (prsv->prsv_tag & pr->pr_tag_mask); + for (i = 0; i < prsv->prsv_nppods; ppod_addr += chunk) { + + /* How many page pods are we writing in this cycle */ + n = min(prsv->prsv_nppods - i, NUM_ULP_TX_SC_IMM_PPODS); + MPASS(n > 0); + chunk = PPOD_SZ(n); + len = roundup2(sizeof(*ulpmc) + sizeof(*ulpsc) + chunk, 16); + + m = alloc_raw_wr_mbuf(len); + if (m == NULL) + return (ENOMEM); + + ulpmc = mtod(m, struct ulp_mem_io *); + INIT_ULPTX_WR(ulpmc, len, 0, toep->tid); + ulpmc->cmd = cmd; + ulpmc->dlen = htobe32(V_ULP_MEMIO_DATA_LEN(chunk / 32)); + ulpmc->len16 = htobe32(howmany(len - sizeof(ulpmc->wr), 16)); + ulpmc->lock_addr = htobe32(V_ULP_MEMIO_ADDR(ppod_addr >> 5)); + + ulpsc = (struct ulptx_idata *)(ulpmc + 1); + ulpsc->cmd_more = htobe32(V_ULPTX_CMD(ULP_TX_SC_IMM)); + ulpsc->len = htobe32(chunk); + + ppod = (struct pagepod *)(ulpsc + 1); + for (j = 0; j < n; i++, j++, ppod++) { + ppod->vld_tid_pgsz_tag_color = htobe64(F_PPOD_VALID | + V_PPOD_TID(toep->tid) | + (prsv->prsv_tag & ~V_PPOD_PGSZ(M_PPOD_PGSZ))); + ppod->len_offset = htobe64(V_PPOD_LEN(bp->bio_bcount) | + V_PPOD_OFST(bp->bio_ma_offset)); + ppod->rsvd = 0; + idx = i * PPOD_PAGES * (ddp_pgsz / PAGE_SIZE); + for (k = 0; k < nitems(ppod->addr); k++) { + if (idx < bp->bio_ma_n) { + pa = VM_PAGE_TO_PHYS(bp->bio_ma[idx]); + ppod->addr[k] = htobe64(pa); + idx += ddp_pgsz / PAGE_SIZE; + } else + ppod->addr[k] = 0; +#if 0 + CTR5(KTR_CXGBE, + "%s: tid %d ppod[%d]->addr[%d] = %p", + __func__, toep->tid, i, k, + be64toh(ppod->addr[k])); +#endif + } + } + + mbufq_enqueue(wrq, m); + } + + return (0); +} + int t4_write_page_pods_for_buf(struct adapter *sc, struct toepcb *toep, struct ppod_reservation *prsv, vm_offset_t buf, int buflen, @@ -1398,7 +1496,7 @@ prep_pageset(struct adapter *sc, struct toepcb *toep, struct pageset *ps) struct tom_data *td = sc->tom_softc; if (ps->prsv.prsv_nppods == 0 && - !t4_alloc_page_pods_for_ps(&td->pr, ps)) { + t4_alloc_page_pods_for_ps(&td->pr, ps) != 0) { return (0); } if (!(ps->flags & PS_PPODS_WRITTEN) && diff --git a/sys/dev/cxgbe/tom/t4_tom.h b/sys/dev/cxgbe/tom/t4_tom.h index dc462d4b4a66..4040b556f60e 100644 --- a/sys/dev/cxgbe/tom/t4_tom.h +++ b/sys/dev/cxgbe/tom/t4_tom.h @@ -89,6 +89,7 @@ enum { DDP_DEAD = (1 << 6), /* toepcb is shutting down */ }; +struct bio; struct ctl_sg_entry; struct sockopt; struct offload_settings; @@ -488,12 +489,16 @@ int t4_init_ppod_region(struct ppod_region *, struct t4_range *, u_int, const char *); void t4_free_ppod_region(struct ppod_region *); int t4_alloc_page_pods_for_ps(struct ppod_region *, struct pageset *); +int t4_alloc_page_pods_for_bio(struct ppod_region *, struct bio *, + struct ppod_reservation *); int t4_alloc_page_pods_for_buf(struct ppod_region *, vm_offset_t, int, struct ppod_reservation *); int t4_alloc_page_pods_for_sgl(struct ppod_region *, struct ctl_sg_entry *, int, struct ppod_reservation *); int t4_write_page_pods_for_ps(struct adapter *, struct sge_wrq *, int, struct pageset *); +int t4_write_page_pods_for_bio(struct adapter *, struct toepcb *, + struct ppod_reservation *, struct bio *, struct mbufq *); int t4_write_page_pods_for_buf(struct adapter *, struct toepcb *, struct ppod_reservation *, vm_offset_t, int, struct mbufq *); int t4_write_page_pods_for_sgl(struct adapter *, struct toepcb *,