From nobody Fri May 3 13:12:57 2024 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 149980342041012.893252222889828; Tue, 11 Jul 2017 13:03:40 -0700 (PDT) Received: from localhost ([::1]:48702 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1Nd-0006yx-FC for importer@patchew.org; Tue, 11 Jul 2017 16:03:33 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32784) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1Mf-0006eO-Ly for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dV1Mc-0008Dk-Jv for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:33 -0400 Received: from chuckie.co.uk ([82.165.15.123]:34861 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dV1Mc-0008D6-Cq for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:30 -0400 Received: from host109-153-193-12.range109-153.btcentralplus.com ([109.153.193.12] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dV1MW-00039I-Np; Tue, 11 Jul 2017 21:02:25 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, lersek@redhat.com, somlo@cmu.edu, ehabkost@redhat.com, mst@redhat.com, pbonzini@redhat.com, rjones@redhat.com, imammedo@redhat.com, peter.maydell@linaro.org Date: Tue, 11 Jul 2017 21:02:11 +0100 Message-Id: <1499803333-9052-2-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 109.153.193.12 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCHv8 1/3] fw_cfg: switch fw_cfg_find() to locate the fw_cfg device by type rather than path 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This will enable the fw_cfg device to be placed anywhere within the QOM tree regardless of its machine location. Note that we also add a comment to document the behaviour that we return NU= LL to indicate failure where either no fw_cfg device or multiple fw_cfg devices a= re found. Signed-off-by: Mark Cave-Ayland --- hw/nvram/fw_cfg.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 99bdbc2..8ef889a 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -1017,7 +1017,12 @@ FWCfgState *fw_cfg_init_mem(hwaddr ctl_addr, hwaddr = data_addr) =20 FWCfgState *fw_cfg_find(void) { - return FW_CFG(object_resolve_path(FW_CFG_PATH, NULL)); + /* Returns FWCfgState if only one fw_cfg device type exists. If zero or + more than one fw_cfg device are found then NULL is returned as per = the + object_resolve_path_type() documentation. This behaviour is correct= as + it ensures that we detect both missing fw_cfg devices and multiple + fw_cfg devices which could result in unpredictable behaviour. */ + return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); } =20 static void fw_cfg_class_init(ObjectClass *klass, void *data) --=20 1.7.10.4 From nobody Fri May 3 13:12:57 2024 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 1499803658895450.5460485728453; Tue, 11 Jul 2017 13:07:38 -0700 (PDT) Received: from localhost ([::1]:48724 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1RZ-00015d-Mx for importer@patchew.org; Tue, 11 Jul 2017 16:07:37 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32786) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1Mf-0006eP-MJ for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dV1Mc-0008De-K5 for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:33 -0400 Received: from chuckie.co.uk ([82.165.15.123]:34863 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dV1Mc-0008D9-Cx for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:30 -0400 Received: from host109-153-193-12.range109-153.btcentralplus.com ([109.153.193.12] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dV1MY-00039I-3h; Tue, 11 Jul 2017 21:02:27 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, lersek@redhat.com, somlo@cmu.edu, ehabkost@redhat.com, mst@redhat.com, pbonzini@redhat.com, rjones@redhat.com, imammedo@redhat.com, peter.maydell@linaro.org Date: Tue, 11 Jul 2017 21:02:12 +0100 Message-Id: <1499803333-9052-3-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 109.153.193.12 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCHv8 2/3] fw_cfg: move qdev_init_nofail() from fw_cfg_init1() to callers 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" When looking to instantiate a TYPE_FW_CFG_MEM or TYPE_FW_CFG_IO device to be able to wire it up differently, it is much more convenient for the caller to instantiate the device and have the fw_cfg default files already preloaded during realize. Move fw_cfg_init1() to the end of both the fw_cfg_mem_realize() and fw_cfg_io_realize() functions so it no longer needs to be called manually when instantiating the device, and also rename it to fw_cfg_common_realize() which better describes its new purpose. Since it is now the responsibility of the machine to wire up the fw_cfg dev= ice it is necessary to introduce a object_property_add_child() call into fw_cfg_init_io() and fw_cfg_init_mem() to link the fw_cfg device to the root machine object as before. Finally with the previous change to fw_cfg_find() we can now remove the assert() preventing multiple fw_cfg devices being instantiated and replace them with a simple call to fw_cfg_find() at realize time instead. This allo= ws us to remove FW_CFG_NAME and FW_CFG_PATH since they are no longer required. Signed-off-by: Mark Cave-Ayland Reviewed-by: Igor Mammedov --- hw/nvram/fw_cfg.c | 35 ++++++++++++++++++++++++----------- 1 file changed, 24 insertions(+), 11 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 8ef889a..6e96b92 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -37,9 +37,6 @@ =20 #define FW_CFG_FILE_SLOTS_DFLT 0x20 =20 -#define FW_CFG_NAME "fw_cfg" -#define FW_CFG_PATH "/machine/" FW_CFG_NAME - #define TYPE_FW_CFG "fw_cfg" #define TYPE_FW_CFG_IO "fw_cfg_io" #define TYPE_FW_CFG_MEM "fw_cfg_mem" @@ -909,17 +906,16 @@ static void fw_cfg_machine_ready(struct Notifier *n, = void *data) =20 =20 =20 -static void fw_cfg_init1(DeviceState *dev) +static void fw_cfg_common_realize(DeviceState *dev, Error **errp) { FWCfgState *s =3D FW_CFG(dev); MachineState *machine =3D MACHINE(qdev_get_machine()); uint32_t version =3D FW_CFG_VERSION; =20 - assert(!object_resolve_path(FW_CFG_PATH, NULL)); - - object_property_add_child(OBJECT(machine), FW_CFG_NAME, OBJECT(s), NUL= L); - - qdev_init_nofail(dev); + if (!fw_cfg_find()) { + error_setg(errp, "at most one %s device is permitted", TYPE_FW_CFG= ); + return; + } =20 fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); fw_cfg_add_bytes(s, FW_CFG_UUID, &qemu_uuid, 16); @@ -952,7 +948,9 @@ FWCfgState *fw_cfg_init_io_dma(uint32_t iobase, uint32_= t dma_iobase, qdev_prop_set_bit(dev, "dma_enabled", false); } =20 - fw_cfg_init1(dev); + object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG, + OBJECT(dev), NULL); + qdev_init_nofail(dev); =20 sbd =3D SYS_BUS_DEVICE(dev); ios =3D FW_CFG_IO(dev); @@ -990,7 +988,9 @@ FWCfgState *fw_cfg_init_mem_wide(hwaddr ctl_addr, qdev_prop_set_bit(dev, "dma_enabled", false); } =20 - fw_cfg_init1(dev); + object_property_add_child(OBJECT(qdev_get_machine()), TYPE_FW_CFG, + OBJECT(dev), NULL); + qdev_init_nofail(dev); =20 sbd =3D SYS_BUS_DEVICE(dev); sysbus_mmio_map(sbd, 0, ctl_addr); @@ -1025,6 +1025,7 @@ FWCfgState *fw_cfg_find(void) return FW_CFG(object_resolve_path_type("", TYPE_FW_CFG, NULL)); } =20 + static void fw_cfg_class_init(ObjectClass *klass, void *data) { DeviceClass *dc =3D DEVICE_CLASS(klass); @@ -1096,6 +1097,12 @@ static void fw_cfg_io_realize(DeviceState *dev, Erro= r **errp) &fw_cfg_dma_mem_ops, FW_CFG(s), "fwcfg.dma", sizeof(dma_addr_t)); } + + fw_cfg_common_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } } =20 static void fw_cfg_io_class_init(ObjectClass *klass, void *data) @@ -1162,6 +1169,12 @@ static void fw_cfg_mem_realize(DeviceState *dev, Err= or **errp) sizeof(dma_addr_t)); sysbus_init_mmio(sbd, &FW_CFG(s)->dma_iomem); } + + fw_cfg_common_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } } =20 static void fw_cfg_mem_class_init(ObjectClass *klass, void *data) --=20 1.7.10.4 From nobody Fri May 3 13:12:57 2024 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 1499803563328251.57213210865893; Tue, 11 Jul 2017 13:06:03 -0700 (PDT) Received: from localhost ([::1]:48714 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1Q0-0000BA-2w for importer@patchew.org; Tue, 11 Jul 2017 16:06:00 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32783) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dV1Mf-0006eN-Lk for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dV1Md-0008E9-5O for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:33 -0400 Received: from chuckie.co.uk ([82.165.15.123]:34866 helo=s16892447.onlinehome-server.info) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dV1Mc-0008DQ-Tc for qemu-devel@nongnu.org; Tue, 11 Jul 2017 16:02:31 -0400 Received: from host109-153-193-12.range109-153.btcentralplus.com ([109.153.193.12] helo=kentang.home) by s16892447.onlinehome-server.info with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1dV1MZ-00039I-QC; Tue, 11 Jul 2017 21:02:29 +0100 From: Mark Cave-Ayland To: qemu-devel@nongnu.org, lersek@redhat.com, somlo@cmu.edu, ehabkost@redhat.com, mst@redhat.com, pbonzini@redhat.com, rjones@redhat.com, imammedo@redhat.com, peter.maydell@linaro.org Date: Tue, 11 Jul 2017 21:02:13 +0100 Message-Id: <1499803333-9052-4-git-send-email-mark.cave-ayland@ilande.co.uk> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> References: <1499803333-9052-1-git-send-email-mark.cave-ayland@ilande.co.uk> X-SA-Exim-Connect-IP: 109.153.193.12 X-SA-Exim-Mail-From: mark.cave-ayland@ilande.co.uk X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 02:45:44 +0000) X-SA-Exim-Scanned: Yes (on s16892447.onlinehome-server.info) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 82.165.15.123 Subject: [Qemu-devel] [PATCHv8 3/3] fw_cfg: move QOM type defines and fw_cfg types into fw_cfg.h 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" By exposing FWCfgIoState and FWCfgMemState internals we allow the possibili= ty for the internal MemoryRegion fields to be mapped by name for boards that w= ish to wire up the fw_cfg device themselves. Signed-off-by: Mark Cave-Ayland Reviewed-by: Laszlo Ersek --- hw/nvram/fw_cfg.c | 49 +----------------------------------------= --- include/hw/nvram/fw_cfg.h | 50 +++++++++++++++++++++++++++++++++++++++++= ++++ include/qemu/typedefs.h | 1 + 3 files changed, 52 insertions(+), 48 deletions(-) diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c index 6e96b92..7d348fd 100644 --- a/hw/nvram/fw_cfg.c +++ b/hw/nvram/fw_cfg.c @@ -37,14 +37,6 @@ =20 #define FW_CFG_FILE_SLOTS_DFLT 0x20 =20 -#define TYPE_FW_CFG "fw_cfg" -#define TYPE_FW_CFG_IO "fw_cfg_io" -#define TYPE_FW_CFG_MEM "fw_cfg_mem" - -#define FW_CFG(obj) OBJECT_CHECK(FWCfgState, (obj), TYPE_FW_CFG) -#define FW_CFG_IO(obj) OBJECT_CHECK(FWCfgIoState, (obj), TYPE_FW_CFG_IO) -#define FW_CFG_MEM(obj) OBJECT_CHECK(FWCfgMemState, (obj), TYPE_FW_CFG_MEM) - /* FW_CFG_VERSION bits */ #define FW_CFG_VERSION 0x01 #define FW_CFG_VERSION_DMA 0x02 @@ -58,51 +50,12 @@ =20 #define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */ =20 -typedef struct FWCfgEntry { +struct FWCfgEntry { uint32_t len; bool allow_write; uint8_t *data; void *callback_opaque; FWCfgReadCallback read_callback; -} FWCfgEntry; - -struct FWCfgState { - /*< private >*/ - SysBusDevice parent_obj; - /*< public >*/ - - uint16_t file_slots; - FWCfgEntry *entries[2]; - int *entry_order; - FWCfgFiles *files; - uint16_t cur_entry; - uint32_t cur_offset; - Notifier machine_ready; - - int fw_cfg_order_override; - - bool dma_enabled; - dma_addr_t dma_addr; - AddressSpace *dma_as; - MemoryRegion dma_iomem; -}; - -struct FWCfgIoState { - /*< private >*/ - FWCfgState parent_obj; - /*< public >*/ - - MemoryRegion comb_iomem; -}; - -struct FWCfgMemState { - /*< private >*/ - FWCfgState parent_obj; - /*< public >*/ - - MemoryRegion ctl_iomem, data_iomem; - uint32_t data_width; - MemoryRegionOps wide_data_ops; }; =20 #define JPG_FILE 0 diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h index b980cba..b77ea48 100644 --- a/include/hw/nvram/fw_cfg.h +++ b/include/hw/nvram/fw_cfg.h @@ -1,8 +1,19 @@ #ifndef FW_CFG_H #define FW_CFG_H =20 +#include "qemu/typedefs.h" #include "exec/hwaddr.h" #include "hw/nvram/fw_cfg_keys.h" +#include "hw/sysbus.h" +#include "sysemu/dma.h" + +#define TYPE_FW_CFG "fw_cfg" +#define TYPE_FW_CFG_IO "fw_cfg_io" +#define TYPE_FW_CFG_MEM "fw_cfg_mem" + +#define FW_CFG(obj) OBJECT_CHECK(FWCfgState, (obj), TYPE_FW_CFG) +#define FW_CFG_IO(obj) OBJECT_CHECK(FWCfgIoState, (obj), TYPE_FW_CFG_IO) +#define FW_CFG_MEM(obj) OBJECT_CHECK(FWCfgMemState, (obj), TYPE_FW_CFG_MEM) =20 typedef struct FWCfgFile { uint32_t size; /* file size */ @@ -35,6 +46,45 @@ typedef struct FWCfgDmaAccess { =20 typedef void (*FWCfgReadCallback)(void *opaque); =20 +struct FWCfgState { + /*< private >*/ + SysBusDevice parent_obj; + /*< public >*/ + + uint16_t file_slots; + FWCfgEntry *entries[2]; + int *entry_order; + FWCfgFiles *files; + uint16_t cur_entry; + uint32_t cur_offset; + Notifier machine_ready; + + int fw_cfg_order_override; + + bool dma_enabled; + dma_addr_t dma_addr; + AddressSpace *dma_as; + MemoryRegion dma_iomem; +}; + +struct FWCfgIoState { + /*< private >*/ + FWCfgState parent_obj; + /*< public >*/ + + MemoryRegion comb_iomem; +}; + +struct FWCfgMemState { + /*< private >*/ + FWCfgState parent_obj; + /*< public >*/ + + MemoryRegion ctl_iomem, data_iomem; + uint32_t data_width; + MemoryRegionOps wide_data_ops; +}; + /** * fw_cfg_add_bytes: * @s: fw_cfg device being modified diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h index 2706aab..0a23020 100644 --- a/include/qemu/typedefs.h +++ b/include/qemu/typedefs.h @@ -30,6 +30,7 @@ typedef struct DisplaySurface DisplaySurface; typedef struct DriveInfo DriveInfo; typedef struct Error Error; typedef struct EventNotifier EventNotifier; +typedef struct FWCfgEntry FWCfgEntry; typedef struct FWCfgIoState FWCfgIoState; typedef struct FWCfgMemState FWCfgMemState; typedef struct FWCfgState FWCfgState; --=20 1.7.10.4