From nobody Tue Feb 10 04:17:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1505149292100711.5135728609689; Mon, 11 Sep 2017 10:01:32 -0700 (PDT) Received: from localhost ([::1]:59161 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drS5T-00077k-7O for importer@patchew.org; Mon, 11 Sep 2017 13:01:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57589) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1drS3k-0005sl-U6 for qemu-devel@nongnu.org; Mon, 11 Sep 2017 12:59:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1drS3j-00075e-H5 for qemu-devel@nongnu.org; Mon, 11 Sep 2017 12:59:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49794) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1drS3j-00074B-9I for qemu-devel@nongnu.org; Mon, 11 Sep 2017 12:59:43 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2A18A745C4; Mon, 11 Sep 2017 16:59:42 +0000 (UTC) Received: from localhost (ovpn-112-51.ams2.redhat.com [10.36.112.51]) by smtp.corp.redhat.com (Postfix) with ESMTP id 157F85D9CA; Mon, 11 Sep 2017 16:59:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 2A18A745C4 Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=marcandre.lureau@redhat.com From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= To: qemu-devel@nongnu.org Date: Mon, 11 Sep 2017 18:59:23 +0200 Message-Id: <20170911165929.2791-2-marcandre.lureau@redhat.com> In-Reply-To: <20170911165929.2791-1-marcandre.lureau@redhat.com> References: <20170911165929.2791-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 11 Sep 2017 16:59:42 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v6 1/7] fw_cfg: add write callback X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, Ben Warren , mst@redhat.com, Paolo Bonzini , anderson@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , imammedo@redhat.com, lersek@redhat.com, Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Reintroduce the write callback that was removed when write support was removed in commit 023e3148567ac898c7258138f8e86c3c2bb40d07. Contrary to the previous callback implementation, the write_cb callback is called whenever a write happened, so handlers must be ready to handle partial write as necessary. Signed-off-by: Marc-Andr=C3=A9 Lureau --- include/hw/nvram/fw_cfg.h | 3 +++ hw/acpi/vmgenid.c | 2 +- hw/core/loader.c | 2 +- hw/i386/acpi-build.c | 2 +- hw/isa/lpc_ich9.c | 4 ++-- hw/nvram/fw_cfg.c | 14 ++++++++++---- 6 files changed, 18 insertions(+), 9 deletions(-) diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index f50d068563..7ccbae5fba 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -45,6 +45,7 @@ typedef struct FWCfgDmaAccess { } QEMU_PACKED FWCfgDmaAccess; =20 typedef void (*FWCfgCallback)(void *opaque); +typedef void (*FWCfgWriteCallback)(void *opaque, off_t start, size_t len); =20 struct FWCfgState { /*< private >*/ @@ -183,6 +184,7 @@ void fw_cfg_add_file(FWCfgState *s, const char *filenam= e, void *data, * @s: fw_cfg device being modified * @filename: name of new fw_cfg file item * @select_cb: callback function when selecting + * @write_cb: callback function after a write * @callback_opaque: argument to be passed into callback function * @data: pointer to start of item data * @len: size of item data @@ -202,6 +204,7 @@ void fw_cfg_add_file(FWCfgState *s, const char *filenam= e, void *data, */ void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, FWCfgCallback select_cb, + FWCfgWriteCallback write_cb, void *callback_opaque, void *data, size_t len, bool read_only); =20 diff --git a/hw/acpi/vmgenid.c b/hw/acpi/vmgenid.c index 2876d8a639..105044f666 100644 --- a/hw/acpi/vmgenid.c +++ b/hw/acpi/vmgenid.c @@ -124,7 +124,7 @@ void vmgenid_add_fw_cfg(VmGenIdState *vms, FWCfgState *= s, GArray *guid) fw_cfg_add_file(s, VMGENID_GUID_FW_CFG_FILE, guid->data, VMGENID_FW_CFG_SIZE); /* Create a read-write fw_cfg file for Address */ - fw_cfg_add_file_callback(s, VMGENID_ADDR_FW_CFG_FILE, NULL, NULL, + fw_cfg_add_file_callback(s, VMGENID_ADDR_FW_CFG_FILE, NULL, NULL, NULL, vms->vmgenid_addr_le, ARRAY_SIZE(vms->vmgenid_addr_le), false); } diff --git a/hw/core/loader.c b/hw/core/loader.c index 4593061445..91669d65aa 100644 --- a/hw/core/loader.c +++ b/hw/core/loader.c @@ -1023,7 +1023,7 @@ MemoryRegion *rom_add_blob(const char *name, const vo= id *blob, size_t len, } =20 fw_cfg_add_file_callback(fw_cfg, fw_file_name, - fw_callback, callback_opaque, + fw_callback, NULL, callback_opaque, data, rom->datasize, read_only); } return mr; diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 4d19d91e1b..702a214369 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -2890,7 +2890,7 @@ void acpi_setup(void) =20 build_state->rsdp =3D g_memdup(tables.rsdp->data, rsdp_size); fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE, - acpi_build_update, build_state, + acpi_build_update, NULL, build_state, build_state->rsdp, rsdp_size, true); build_state->rsdp_mr =3D NULL; } else { diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c index ac8416d42b..de8fbb7260 100644 --- a/hw/isa/lpc_ich9.c +++ b/hw/isa/lpc_ich9.c @@ -402,12 +402,12 @@ void ich9_lpc_pm_init(PCIDevice *lpc_pci, bool smm_en= abled) * just link them into fw_cfg here. */ fw_cfg_add_file_callback(fw_cfg, "etc/smi/requested-features", - NULL, NULL, + NULL, NULL, NULL, lpc->smi_guest_features_le, sizeof lpc->smi_guest_features_le, false); fw_cfg_add_file_callback(fw_cfg, "etc/smi/features-ok", - smi_features_ok_callback, lpc, + smi_features_ok_callback, NULL, lpc, &lpc->smi_features_ok, sizeof lpc->smi_features_ok, true); diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index e3bd626b8c..753ac0e4ea 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -56,6 +56,7 @@ struct FWCfgEntry { uint8_t *data; void *callback_opaque; FWCfgCallback select_cb; + FWCfgWriteCallback write_cb; }; =20 #define JPG_FILE 0 @@ -370,6 +371,8 @@ static void fw_cfg_dma_transfer(FWCfgState *s) dma_memory_read(s->dma_as, dma.address, &e->data[s->cur_offset], len)) { dma.control |=3D FW_CFG_DMA_CTL_ERROR; + } else if (e->write_cb) { + e->write_cb(e->callback_opaque, s->cur_offset, len); } } =20 @@ -570,6 +573,7 @@ static const VMStateDescription vmstate_fw_cfg =3D { =20 static void fw_cfg_add_bytes_callback(FWCfgState *s, uint16_t key, FWCfgCallback select_cb, + FWCfgWriteCallback write_cb, void *callback_opaque, void *data, size_t len, bool read_only) @@ -584,6 +588,7 @@ static void fw_cfg_add_bytes_callback(FWCfgState *s, ui= nt16_t key, s->entries[arch][key].data =3D data; s->entries[arch][key].len =3D (uint32_t)len; s->entries[arch][key].select_cb =3D select_cb; + s->entries[arch][key].write_cb =3D write_cb; s->entries[arch][key].callback_opaque =3D callback_opaque; s->entries[arch][key].allow_write =3D !read_only; } @@ -610,7 +615,7 @@ static void *fw_cfg_modify_bytes_read(FWCfgState *s, ui= nt16_t key, =20 void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len) { - fw_cfg_add_bytes_callback(s, key, NULL, NULL, data, len, true); + fw_cfg_add_bytes_callback(s, key, NULL, NULL, NULL, data, len, true); } =20 void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value) @@ -737,6 +742,7 @@ static int get_fw_cfg_order(FWCfgState *s, const char *= name) =20 void fw_cfg_add_file_callback(FWCfgState *s, const char *filename, FWCfgCallback select_cb, + FWCfgWriteCallback write_cb, void *callback_opaque, void *data, size_t len, bool read_only) { @@ -800,7 +806,7 @@ void fw_cfg_add_file_callback(FWCfgState *s, const cha= r *filename, } =20 fw_cfg_add_bytes_callback(s, FW_CFG_FILE_FIRST + index, - select_cb, + select_cb, write_cb, callback_opaque, data, len, read_only); =20 @@ -815,7 +821,7 @@ void fw_cfg_add_file_callback(FWCfgState *s, const cha= r *filename, void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data, size_t len) { - fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len, true); + fw_cfg_add_file_callback(s, filename, NULL, NULL, NULL, data, len, tru= e); } =20 void *fw_cfg_modify_file(FWCfgState *s, const char *filename, @@ -838,7 +844,7 @@ void *fw_cfg_modify_file(FWCfgState *s, const char *fil= ename, } } /* add new one */ - fw_cfg_add_file_callback(s, filename, NULL, NULL, data, len, true); + fw_cfg_add_file_callback(s, filename, NULL, NULL, NULL, data, len, tru= e); return NULL; } =20 --=20 2.14.1.146.gd35faa819