From patchwork Fri Sep 9 00:15:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniele Ceraolo Spurio X-Patchwork-Id: 12970855 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 279C1C54EE9 for ; Fri, 9 Sep 2022 00:17:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3E0FB10E8A6; Fri, 9 Sep 2022 00:17:00 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5B09F10E877; Fri, 9 Sep 2022 00:16:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1662682605; x=1694218605; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MIoC5JcYmE9IwY1EJ0PA1M+zsG9pHjaez2jOvGZ8hNQ=; b=ewW2AdfB41Hfr3CtmwNKbLYL9C0OuXKZQ6RPgsT4GwF/rJibp6G5Q/oE fOZejkHIQDB2MMrPYrlG3/OGpvF6+lCG6BSbMcEkxeXcDuwNrSE+4ahRr GFkIwC2nYRYUtnbBVuDdCvkoHo/vOiMh2sGnmMrbPVfBOeDzpVXar3HQW 0qYmqXK2Fn12j/uyqfLWfTIRo2Zs/RDhHAbuBw9x7W2+WcuwvTXxaEafp g11G4IUKN87y73ge4MmgvHxcGkpa9ZvqXyE6PHRcVkiguutu8f4ZTCKo/ ypX2d+4T5RkwvrcYCEvMqbC64sRaWHClgmzWbV95TJiMS3nuw9gYX+pdB g==; X-IronPort-AV: E=McAfee;i="6500,9779,10464"; a="294938828" X-IronPort-AV: E=Sophos;i="5.93,300,1654585200"; d="scan'208";a="294938828" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2022 17:16:35 -0700 X-IronPort-AV: E=Sophos;i="5.93,300,1654585200"; d="scan'208";a="676933172" Received: from valcore-skull-1.fm.intel.com ([10.1.27.19]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Sep 2022 17:16:35 -0700 From: Daniele Ceraolo Spurio To: intel-gfx@lists.freedesktop.org Date: Thu, 8 Sep 2022 17:15:58 -0700 Message-Id: <20220909001612.728451-2-daniele.ceraolospurio@intel.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220909001612.728451-1-daniele.ceraolospurio@intel.com> References: <20220909001612.728451-1-daniele.ceraolospurio@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 01/15] mei: add support to GSC extended header X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kroah-Hartman , Tomas Winkler , Vitaly Lubart , dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Tomas Winkler GSC extend header is of variable size and data is provided in a sgl list inside the header and not in the data buffers, need to enable the path. V2: 1. Add missing kdoc for mei_cl_cb 2. In mei_me_hbuf_write() use dev_err() when validationg parameters instead of WARN_ON() Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Cc: Vitaly Lubart Cc: Greg Kroah-Hartman --- drivers/misc/mei/client.c | 55 ++++++++++++++++++++++++---------- drivers/misc/mei/hbm.c | 13 ++++++++ drivers/misc/mei/hw-me.c | 7 ++++- drivers/misc/mei/hw.h | 57 ++++++++++++++++++++++++++++++++++++ drivers/misc/mei/interrupt.c | 47 ++++++++++++++++++++++++----- drivers/misc/mei/mei_dev.h | 4 +++ 6 files changed, 160 insertions(+), 23 deletions(-) diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index 0b2fbe1335a7..6c8b71ae32c8 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -322,6 +322,7 @@ void mei_io_cb_free(struct mei_cl_cb *cb) list_del(&cb->list); kfree(cb->buf.data); + kfree(cb->ext_hdr); kfree(cb); } @@ -401,6 +402,7 @@ static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, cb->buf_idx = 0; cb->fop_type = type; cb->vtag = 0; + cb->ext_hdr = NULL; return cb; } @@ -1740,6 +1742,17 @@ static inline u8 mei_ext_hdr_set_vtag(void *ext, u8 vtag) return vtag_hdr->hdr.length; } +static inline bool mei_ext_hdr_is_gsc(struct mei_ext_hdr *ext) +{ + return ext && ext->type == MEI_EXT_HDR_GSC; +} + +static inline u8 mei_ext_hdr_set_gsc(struct mei_ext_hdr *ext, struct mei_ext_hdr *gsc_hdr) +{ + memcpy(ext, gsc_hdr, mei_ext_hdr_len(gsc_hdr)); + return ext->length; +} + /** * mei_msg_hdr_init - allocate and initialize mei message header * @@ -1752,14 +1765,17 @@ static struct mei_msg_hdr *mei_msg_hdr_init(const struct mei_cl_cb *cb) size_t hdr_len; struct mei_ext_meta_hdr *meta; struct mei_msg_hdr *mei_hdr; - bool is_ext, is_vtag; + bool is_ext, is_hbm, is_gsc, is_vtag; + struct mei_ext_hdr *next_ext; if (!cb) return ERR_PTR(-EINVAL); /* Extended header for vtag is attached only on the first fragment */ is_vtag = (cb->vtag && cb->buf_idx == 0); - is_ext = is_vtag; + is_hbm = cb->cl->me_cl->client_id == 0; + is_gsc = ((!is_hbm) && cb->cl->dev->hbm_f_gsc_supported && mei_ext_hdr_is_gsc(cb->ext_hdr)); + is_ext = is_vtag || is_gsc; /* Compute extended header size */ hdr_len = sizeof(*mei_hdr); @@ -1771,6 +1787,9 @@ static struct mei_msg_hdr *mei_msg_hdr_init(const struct mei_cl_cb *cb) if (is_vtag) hdr_len += sizeof(struct mei_ext_hdr_vtag); + if (is_gsc) + hdr_len += mei_ext_hdr_len(cb->ext_hdr); + setup_hdr: mei_hdr = kzalloc(hdr_len, GFP_KERNEL); if (!mei_hdr) @@ -1785,10 +1804,20 @@ static struct mei_msg_hdr *mei_msg_hdr_init(const struct mei_cl_cb *cb) goto out; meta = (struct mei_ext_meta_hdr *)mei_hdr->extension; + meta->size = 0; + next_ext = (struct mei_ext_hdr *)meta->hdrs; if (is_vtag) { meta->count++; - meta->size += mei_ext_hdr_set_vtag(meta->hdrs, cb->vtag); + meta->size += mei_ext_hdr_set_vtag(next_ext, cb->vtag); + next_ext = mei_ext_next(next_ext); + } + + if (is_gsc) { + meta->count++; + meta->size += mei_ext_hdr_set_gsc(next_ext, cb->ext_hdr); + next_ext = mei_ext_next(next_ext); } + out: mei_hdr->length = hdr_len - sizeof(*mei_hdr); return mei_hdr; @@ -1812,14 +1841,14 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, struct mei_msg_hdr *mei_hdr = NULL; size_t hdr_len; size_t hbuf_len, dr_len; - size_t buf_len; + size_t buf_len = 0; size_t data_len; int hbuf_slots; u32 dr_slots; u32 dma_len; int rets; bool first_chunk; - const void *data; + const void *data = NULL; if (WARN_ON(!cl || !cl->dev)) return -ENODEV; @@ -1839,8 +1868,10 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, return 0; } - buf_len = buf->size - cb->buf_idx; - data = buf->data + cb->buf_idx; + if (buf->data) { + buf_len = buf->size - cb->buf_idx; + data = buf->data + cb->buf_idx; + } hbuf_slots = mei_hbuf_empty_slots(dev); if (hbuf_slots < 0) { rets = -EOVERFLOW; @@ -1858,9 +1889,6 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, goto err; } - cl_dbg(dev, cl, "Extended Header %d vtag = %d\n", - mei_hdr->extended, cb->vtag); - hdr_len = sizeof(*mei_hdr) + mei_hdr->length; /** @@ -1889,7 +1917,7 @@ int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, } mei_hdr->length += data_len; - if (mei_hdr->dma_ring) + if (mei_hdr->dma_ring && buf->data) mei_dma_ring_write(dev, buf->data + cb->buf_idx, buf_len); rets = mei_write_message(dev, mei_hdr, hdr_len, data, data_len); @@ -1983,9 +2011,6 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) goto err; } - cl_dbg(dev, cl, "Extended Header %d vtag = %d\n", - mei_hdr->extended, cb->vtag); - hdr_len = sizeof(*mei_hdr) + mei_hdr->length; if (rets == 0) { @@ -2030,7 +2055,7 @@ ssize_t mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb) mei_hdr->length += data_len; - if (mei_hdr->dma_ring) + if (mei_hdr->dma_ring && buf->data) mei_dma_ring_write(dev, buf->data, buf_len); rets = mei_write_message(dev, mei_hdr, hdr_len, data, data_len); diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index de712cbf5d07..12a62a911e42 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -340,9 +340,13 @@ static int mei_hbm_capabilities_req(struct mei_device *dev) req.hbm_cmd = MEI_HBM_CAPABILITIES_REQ_CMD; if (dev->hbm_f_vt_supported) req.capability_requested[0] |= HBM_CAP_VT; + if (dev->hbm_f_cd_supported) req.capability_requested[0] |= HBM_CAP_CD; + if (dev->hbm_f_gsc_supported) + req.capability_requested[0] |= HBM_CAP_GSC; + ret = mei_hbm_write_message(dev, &mei_hdr, &req); if (ret) { dev_err(dev->dev, @@ -1200,6 +1204,12 @@ static void mei_hbm_config_features(struct mei_device *dev) dev->version.minor_version >= HBM_MINOR_VERSION_VT)) dev->hbm_f_vt_supported = 1; + /* GSC support */ + if (dev->version.major_version > HBM_MAJOR_VERSION_GSC || + (dev->version.major_version == HBM_MAJOR_VERSION_GSC && + dev->version.minor_version >= HBM_MINOR_VERSION_GSC)) + dev->hbm_f_gsc_supported = 1; + /* Capability message Support */ dev->hbm_f_cap_supported = 0; if (dev->version.major_version > HBM_MAJOR_VERSION_CAP || @@ -1367,6 +1377,9 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) if (!(capability_res->capability_granted[0] & HBM_CAP_CD)) dev->hbm_f_cd_supported = 0; + if (!(capability_res->capability_granted[0] & HBM_CAP_GSC)) + dev->hbm_f_gsc_supported = 0; + if (dev->hbm_f_dr_supported) { if (mei_dmam_ring_alloc(dev)) dev_info(dev->dev, "running w/o dma ring\n"); diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 9e2f781c6ed5..da4ef0b51954 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -590,9 +590,14 @@ static int mei_me_hbuf_write(struct mei_device *dev, u32 dw_cnt; int empty_slots; - if (WARN_ON(!hdr || !data || hdr_len & 0x3)) + if (WARN_ON(!hdr || hdr_len & 0x3)) return -EINVAL; + if (!data && data_len) { + dev_err(dev->dev, "wrong parameters null data with data_len = %zu\n", data_len); + return -EINVAL; + } + dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM((struct mei_msg_hdr *)hdr)); empty_slots = mei_hbuf_empty_slots(dev); diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h index e7e020dba6b1..14f89d96216b 100644 --- a/drivers/misc/mei/hw.h +++ b/drivers/misc/mei/hw.h @@ -92,6 +92,12 @@ #define HBM_MINOR_VERSION_VT 2 #define HBM_MAJOR_VERSION_VT 2 +/* + * MEI version with GSC support + */ +#define HBM_MINOR_VERSION_GSC 2 +#define HBM_MAJOR_VERSION_GSC 2 + /* * MEI version with capabilities message support */ @@ -229,10 +235,12 @@ enum mei_cl_disconnect_status { * * @MEI_EXT_HDR_NONE: sentinel * @MEI_EXT_HDR_VTAG: vtag header + * @MEI_EXT_HDR_GSC: gsc header */ enum mei_ext_hdr_type { MEI_EXT_HDR_NONE = 0, MEI_EXT_HDR_VTAG = 1, + MEI_EXT_HDR_GSC = 2, }; /** @@ -305,6 +313,39 @@ static inline bool mei_ext_last(struct mei_ext_meta_hdr *meta, return (u8 *)ext >= (u8 *)meta + sizeof(*meta) + (meta->size * 4); } +struct mei_gsc_sgl { + u32 low; + u32 high; + u32 length; +} __packed; + +#define GSC_HECI_MSG_KERNEL 0 +#define GSC_HECI_MSG_USER 1 + +#define GSC_ADDRESS_TYPE_GTT 0 +#define GSC_ADDRESS_TYPE_PPGTT 1 +#define GSC_ADDRESS_TYPE_PHYSICAL_CONTINUOUS 2 /* max of 64K */ +#define GSC_ADDRESS_TYPE_PHYSICAL_SGL 3 + +struct mei_ext_hdr_gsc_h2f { + struct mei_ext_hdr hdr; + u8 client_id; + u8 addr_type; + u32 fence_id; + u8 input_address_count; + u8 output_address_count; + u8 reserved[2]; + struct mei_gsc_sgl sgl[]; +} __packed; + +struct mei_ext_hdr_gsc_f2h { + struct mei_ext_hdr hdr; + u8 client_id; + u8 reserved; + u32 fence_id; + u32 written; +} __packed; + /** * mei_ext_next - following extended header on the TLV list * @@ -320,6 +361,18 @@ static inline struct mei_ext_hdr *mei_ext_next(struct mei_ext_hdr *ext) return (struct mei_ext_hdr *)((u8 *)ext + (ext->length * 4)); } +/** + * mei_ext_hdr_len - get ext header length in bytes + * + * @ext: extend header + * + * Return: extend header length in bytes + */ +static inline u32 mei_ext_hdr_len(struct mei_ext_hdr *ext) +{ + return (ext) ? ext->length * sizeof(u32) : 0; +} + /** * struct mei_msg_hdr - MEI BUS Interface Section * @@ -682,6 +735,10 @@ struct hbm_dma_ring_ctrl { /* virtual tag supported */ #define HBM_CAP_VT BIT(0) + +/* gsc extended header support */ +#define HBM_CAP_GSC BIT(1) + /* client dma supported */ #define HBM_CAP_CD BIT(2) diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 0706322154cb..0a0e984e5673 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -98,9 +98,12 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_device *dev = cl->dev; struct mei_cl_cb *cb; + struct mei_ext_hdr_vtag *vtag_hdr = NULL; + struct mei_ext_hdr_gsc_f2h *gsc_f2h = NULL; + size_t buf_sz; u32 length; - int ext_len; + u32 ext_len; length = mei_hdr->length; ext_len = 0; @@ -122,18 +125,24 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, } if (mei_hdr->extended) { - struct mei_ext_hdr *ext; - struct mei_ext_hdr_vtag *vtag_hdr = NULL; - - ext = mei_ext_begin(meta); + struct mei_ext_hdr *ext = mei_ext_begin(meta); do { switch (ext->type) { case MEI_EXT_HDR_VTAG: vtag_hdr = (struct mei_ext_hdr_vtag *)ext; break; + case MEI_EXT_HDR_GSC: + gsc_f2h = (struct mei_ext_hdr_gsc_f2h *)ext; + cb->ext_hdr = kzalloc(sizeof(*gsc_f2h), GFP_KERNEL); + if (!cb->ext_hdr) { + cb->status = -ENOMEM; + goto discard; + } + break; case MEI_EXT_HDR_NONE: fallthrough; default: + cl_err(dev, cl, "unknown extended header\n"); cb->status = -EPROTO; break; } @@ -141,12 +150,14 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, ext = mei_ext_next(ext); } while (!mei_ext_last(meta, ext)); - if (!vtag_hdr) { - cl_dbg(dev, cl, "vtag not found in extended header.\n"); + if (!vtag_hdr && !gsc_f2h) { + cl_dbg(dev, cl, "no vtag or gsc found in extended header.\n"); cb->status = -EPROTO; goto discard; } + } + if (vtag_hdr) { cl_dbg(dev, cl, "vtag: %d\n", vtag_hdr->vtag); if (cb->vtag && cb->vtag != vtag_hdr->vtag) { cl_err(dev, cl, "mismatched tag: %d != %d\n", @@ -157,6 +168,28 @@ static int mei_cl_irq_read_msg(struct mei_cl *cl, cb->vtag = vtag_hdr->vtag; } + if (gsc_f2h) { + u32 ext_hdr_len = mei_ext_hdr_len(&gsc_f2h->hdr); + + if (!dev->hbm_f_gsc_supported) { + cl_err(dev, cl, "gsc extended header is not supported\n"); + cb->status = -EPROTO; + goto discard; + } + + if (length) { + cl_err(dev, cl, "no data allowed in cb with gsc\n"); + cb->status = -EPROTO; + goto discard; + } + if (ext_hdr_len > sizeof(*gsc_f2h)) { + cl_err(dev, cl, "gsc extended header is too big %u\n", ext_hdr_len); + cb->status = -EPROTO; + goto discard; + } + memcpy(cb->ext_hdr, gsc_f2h, ext_hdr_len); + } + if (!mei_cl_is_connected(cl)) { cl_dbg(dev, cl, "not connected\n"); cb->status = -ENODEV; diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index 6bb3e1ba9ded..31784bbc2d2a 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -206,6 +206,7 @@ struct mei_cl; * @status: io status of the cb * @internal: communication between driver and FW flag * @blocking: transmission blocking mode + * @ext_hdr: extended header */ struct mei_cl_cb { struct list_head list; @@ -218,6 +219,7 @@ struct mei_cl_cb { int status; u32 internal:1; u32 blocking:1; + struct mei_ext_hdr *ext_hdr; }; /** @@ -494,6 +496,7 @@ struct mei_dev_timeouts { * @hbm_f_vt_supported : hbm feature vtag supported * @hbm_f_cap_supported : hbm feature capabilities message supported * @hbm_f_cd_supported : hbm feature client dma supported + * @hbm_f_gsc_supported : hbm feature gsc supported * * @fw_ver : FW versions * @@ -585,6 +588,7 @@ struct mei_device { unsigned int hbm_f_vt_supported:1; unsigned int hbm_f_cap_supported:1; unsigned int hbm_f_cd_supported:1; + unsigned int hbm_f_gsc_supported:1; struct mei_fw_version fw_ver[MEI_MAX_FW_VER_BLOCKS];