From nobody Wed Feb 11 07:30:56 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=stu.pku.edu.cn Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1691823311247572.3336503096239; Fri, 11 Aug 2023 23:55:11 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVO-0004u5-N6; Sat, 12 Aug 2023 02:53:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qUiVK-0004s4-S4; Sat, 12 Aug 2023 02:53:42 -0400 Received: from [106.11.34.246] (helo=B-L8MBMD6R-2342.local) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVF-0006cq-Mk; Sat, 12 Aug 2023 02:53:42 -0400 Received: by B-L8MBMD6R-2342.local (Postfix, from userid 502) id 056F13992E8; Sat, 12 Aug 2023 14:53:20 +0800 (CST) From: Hang Yu To: qemu-devel@nongnu.org Cc: komlodi@google.com, peter@pjd.dev, Hang Yu , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Peter Maydell , Andrew Jeffery , Joel Stanley , qemu-arm@nongnu.org (open list:ASPEED BMCs) Subject: [PATCH v3 1/3] hw/i2c/aspeed: Fix Tx count and Rx size error in buffer pool mode Date: Sat, 12 Aug 2023 14:52:28 +0800 Message-Id: <20230812065230.8839-2-francis_yuu@stu.pku.edu.cn> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> References: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 106.11.34.246 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=106.11.34.246; envelope-from=francisyuu@B-L8MBMD6R-2342.local; helo=B-L8MBMD6R-2342.local X-Spam_score_int: 25 X-Spam_score: 2.5 X-Spam_bar: ++ X-Spam_report: (2.5 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NO_DNS_FOR_FROM=0.001, RCVD_IN_PBL=3.335, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1691823312521100001 Content-Type: text/plain; charset="utf-8" Fixed inconsistency between the regisiter bit field definition header file and the ast2600 datasheet. The reg name is I2CD1C:Pool Buffer Control Register in old register mode and I2CC0C: Master/Slave Pool Buffer Control Register in new register mode. They share bit field [12:8]:Transmit Data Byte Count and bit field [29:24]:Actual Received Pool Buffer Size according to the datasheet. According to the ast2600 datasheet,the actual Tx count is Transmit Data Byte Count plus 1, and the max Rx size is Receive Pool Buffer Size plus 1, both in Pool Buffer Control Register. The version before forgot to plus 1, and mistake Rx count for Rx size. Signed-off-by: Hang Yu Fixes: 3be3d6ccf2ad ("aspeed: i2c: Migrate to registerfields API") Reviewed-by: C=C3=A9dric Le Goater --- v2-->v3: 1. Merged patch1 and patch2 in v2 2. added fixes tag 3. Fixed typos hw/i2c/aspeed_i2c.c | 8 ++++---- include/hw/i2c/aspeed_i2c.h | 4 ++-- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index 1f071a3811..e485d8bfb8 100644 --- a/hw/i2c/aspeed_i2c.c +++ b/hw/i2c/aspeed_i2c.c @@ -236,7 +236,7 @@ static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8= _t pool_start) uint32_t reg_byte_buf =3D aspeed_i2c_bus_byte_buf_offset(bus); uint32_t reg_dma_len =3D aspeed_i2c_bus_dma_len_offset(bus); int pool_tx_count =3D SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, - TX_COUNT); + TX_COUNT) + 1; =20 if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN)) { for (i =3D pool_start; i < pool_tx_count; i++) { @@ -293,7 +293,7 @@ static void aspeed_i2c_bus_recv(AspeedI2CBus *bus) uint32_t reg_dma_len =3D aspeed_i2c_bus_dma_len_offset(bus); uint32_t reg_dma_addr =3D aspeed_i2c_bus_dma_addr_offset(bus); int pool_rx_count =3D SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, - RX_COUNT); + RX_SIZE) + 1; =20 if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_BUFF_EN)) { uint8_t *pool_base =3D aic->bus_pool_base(bus); @@ -418,7 +418,7 @@ static void aspeed_i2c_bus_cmd_dump(AspeedI2CBus *bus) uint32_t reg_intr_sts =3D aspeed_i2c_bus_intr_sts_offset(bus); uint32_t reg_dma_len =3D aspeed_i2c_bus_dma_len_offset(bus); if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_BUFF_EN)) { - count =3D SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COU= NT); + count =3D SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COU= NT) + 1; } else if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_DMA_EN)) { count =3D bus->regs[reg_dma_len]; } else { /* BYTE mode */ @@ -490,7 +490,7 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus= , uint64_t value) */ if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN)) { if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COUNT) - =3D=3D 1) { + =3D=3D 0) { SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, M_TX_CMD, 0); } else { /* diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h index 51c944efea..2e1e15aaf0 100644 --- a/include/hw/i2c/aspeed_i2c.h +++ b/include/hw/i2c/aspeed_i2c.h @@ -139,9 +139,9 @@ REG32(I2CD_CMD, 0x14) /* I2CD Command/Status */ REG32(I2CD_DEV_ADDR, 0x18) /* Slave Device Address */ SHARED_FIELD(SLAVE_DEV_ADDR1, 0, 7) REG32(I2CD_POOL_CTRL, 0x1C) /* Pool Buffer Control */ - SHARED_FIELD(RX_COUNT, 24, 5) + SHARED_FIELD(RX_COUNT, 24, 6) SHARED_FIELD(RX_SIZE, 16, 5) - SHARED_FIELD(TX_COUNT, 9, 5) + SHARED_FIELD(TX_COUNT, 8, 5) FIELD(I2CD_POOL_CTRL, OFFSET, 2, 6) /* AST2400 */ REG32(I2CD_BYTE_BUF, 0x20) /* Transmit/Receive Byte Buffer */ SHARED_FIELD(RX_BUF, 8, 8) --=20 2.39.2 (Apple Git-143) From nobody Wed Feb 11 07:30:56 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=stu.pku.edu.cn Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1691823295038530.100632853684; Fri, 11 Aug 2023 23:54:55 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVQ-0004uL-SI; Sat, 12 Aug 2023 02:53:49 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qUiVL-0004s5-3m; Sat, 12 Aug 2023 02:53:43 -0400 Received: from [106.11.34.246] (helo=B-L8MBMD6R-2342.local) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVF-0006cl-Mr; Sat, 12 Aug 2023 02:53:42 -0400 Received: by B-L8MBMD6R-2342.local (Postfix, from userid 502) id 179653992EB; Sat, 12 Aug 2023 14:53:21 +0800 (CST) From: Hang Yu To: qemu-devel@nongnu.org Cc: komlodi@google.com, peter@pjd.dev, Hang Yu , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Peter Maydell , Andrew Jeffery , Joel Stanley , qemu-arm@nongnu.org (open list:ASPEED BMCs) Subject: [PATCH v3 2/3] hw/i2c/aspeed: Fix TXBUF transmission start position error Date: Sat, 12 Aug 2023 14:52:29 +0800 Message-Id: <20230812065230.8839-3-francis_yuu@stu.pku.edu.cn> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> References: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 106.11.34.246 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=106.11.34.246; envelope-from=francisyuu@B-L8MBMD6R-2342.local; helo=B-L8MBMD6R-2342.local X-Spam_score_int: 25 X-Spam_score: 2.5 X-Spam_bar: ++ X-Spam_report: (2.5 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NO_DNS_FOR_FROM=0.001, RCVD_IN_PBL=3.335, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1691823297022100002 Content-Type: text/plain; charset="utf-8" According to the ast2600 datasheet and the linux aspeed i2c driver, the TXBUF transmission start position should be TXBUF[0] instead of TXBUF[1],so the arg pool_start is useless,and the address is not included in TXBUF.So even if Tx Count equals zero,there is at least 1 byte data needs to be transmitted,and M_TX_CMD should not be cleared at this condition.The driver url is: https://github.com/AspeedTech-BMC/linux/blob/aspeed-master-v5.15/drivers/i2= c/busses/i2c-ast2600.c Signed-off-by: Hang Yu Reviewed-by: C=C3=A9dric Le Goater --- v2-->v3: No change. hw/i2c/aspeed_i2c.c | 30 ++++++------------------------ 1 file changed, 6 insertions(+), 24 deletions(-) diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index e485d8bfb8..44905d7899 100644 --- a/hw/i2c/aspeed_i2c.c +++ b/hw/i2c/aspeed_i2c.c @@ -226,7 +226,7 @@ static int aspeed_i2c_dma_read(AspeedI2CBus *bus, uint8= _t *data) return 0; } =20 -static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8_t pool_start) +static int aspeed_i2c_bus_send(AspeedI2CBus *bus) { AspeedI2CClass *aic =3D ASPEED_I2C_GET_CLASS(bus->controller); int ret =3D -1; @@ -239,7 +239,7 @@ static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8= _t pool_start) TX_COUNT) + 1; =20 if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN)) { - for (i =3D pool_start; i < pool_tx_count; i++) { + for (i =3D 0; i < pool_tx_count; i++) { uint8_t *pool_base =3D aic->bus_pool_base(bus); =20 trace_aspeed_i2c_bus_send("BUF", i + 1, pool_tx_count, @@ -273,7 +273,7 @@ static int aspeed_i2c_bus_send(AspeedI2CBus *bus, uint8= _t pool_start) } SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, TX_DMA_EN, 0); } else { - trace_aspeed_i2c_bus_send("BYTE", pool_start, 1, + trace_aspeed_i2c_bus_send("BYTE", 0, 1, bus->regs[reg_byte_buf]); ret =3D i2c_send(bus->bus, bus->regs[reg_byte_buf]); } @@ -446,10 +446,8 @@ static void aspeed_i2c_bus_cmd_dump(AspeedI2CBus *bus) */ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus, uint64_t value) { - uint8_t pool_start =3D 0; uint32_t reg_intr_sts =3D aspeed_i2c_bus_intr_sts_offset(bus); uint32_t reg_cmd =3D aspeed_i2c_bus_cmd_offset(bus); - uint32_t reg_pool_ctrl =3D aspeed_i2c_bus_pool_ctrl_offset(bus); uint32_t reg_dma_len =3D aspeed_i2c_bus_dma_len_offset(bus); =20 if (!aspeed_i2c_check_sram(bus)) { @@ -483,27 +481,11 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *b= us, uint64_t value) =20 SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, M_START_CMD, 0); =20 - /* - * The START command is also a TX command, as the slave - * address is sent on the bus. Drop the TX flag if nothing - * else needs to be sent in this sequence. - */ - if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN)) { - if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COUNT) - =3D=3D 0) { - SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, M_TX_CMD, 0); - } else { - /* - * Increase the start index in the TX pool buffer to - * skip the address byte. - */ - pool_start++; - } - } else if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_DMA_EN))= { + if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_DMA_EN)) { if (bus->regs[reg_dma_len] =3D=3D 0) { SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, M_TX_CMD, 0); } - } else { + } else if (!SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN= )) { SHARED_ARRAY_FIELD_DP32(bus->regs, reg_cmd, M_TX_CMD, 0); } =20 @@ -520,7 +502,7 @@ static void aspeed_i2c_bus_handle_cmd(AspeedI2CBus *bus= , uint64_t value) =20 if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, M_TX_CMD)) { aspeed_i2c_set_state(bus, I2CD_MTXD); - if (aspeed_i2c_bus_send(bus, pool_start)) { + if (aspeed_i2c_bus_send(bus)) { SHARED_ARRAY_FIELD_DP32(bus->regs, reg_intr_sts, TX_NAK, 1); i2c_end_transfer(bus->bus); } else { --=20 2.39.2 (Apple Git-143) From nobody Wed Feb 11 07:30:56 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=stu.pku.edu.cn Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1691823312489629.8048143809234; Fri, 11 Aug 2023 23:55:12 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVN-0004tI-HO; Sat, 12 Aug 2023 02:53:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qUiVJ-0004rk-Jc; Sat, 12 Aug 2023 02:53:41 -0400 Received: from [2401:b180:8000:2:9109:19ec:a055:9652] (helo=B-L8MBMD6R-2342.local) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qUiVF-0006ck-Ng; Sat, 12 Aug 2023 02:53:41 -0400 Received: by B-L8MBMD6R-2342.local (Postfix, from userid 502) id D13323992F3; Sat, 12 Aug 2023 14:53:22 +0800 (CST) From: Hang Yu To: qemu-devel@nongnu.org Cc: komlodi@google.com, peter@pjd.dev, Hang Yu , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Peter Maydell , Andrew Jeffery , Joel Stanley , qemu-arm@nongnu.org (open list:ASPEED BMCs) Subject: [PATCH v3 3/3] hw/i2c/aspeed: Add support for buffer organization Date: Sat, 12 Aug 2023 14:52:30 +0800 Message-Id: <20230812065230.8839-4-francis_yuu@stu.pku.edu.cn> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> References: <20230812065230.8839-1-francis_yuu@stu.pku.edu.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2401:b180:8000:2:9109:19ec:a055:9652 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2401:b180:8000:2:9109:19ec:a055:9652; envelope-from=francisyuu@B-L8MBMD6R-2342.local; helo=B-L8MBMD6R-2342.local X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NO_DNS_FOR_FROM=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1691823313273100005 Content-Type: text/plain; charset="utf-8" Added support for the buffer organization option in pool buffer control register.when set to 1,The buffer is split into two parts: Lower 16 bytes for Tx and higher 16 bytes for Rx. Signed-off-by: Hang Yu Reviewed-by: C=C3=A9dric Le Goater --- v2-->v3: 1. Fixed typos 2. Simplified the judgment logic of buffer organization. 3. Change the buffer organization field to a shared field, and move it=20 from I2CC_POOL_CTRL to I2CD_POOL_CTRL. hw/i2c/aspeed_i2c.c | 3 +++ include/hw/i2c/aspeed_i2c.h | 1 + 2 files changed, 4 insertions(+) diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index 44905d7899..5d84797027 100644 --- a/hw/i2c/aspeed_i2c.c +++ b/hw/i2c/aspeed_i2c.c @@ -297,6 +297,9 @@ static void aspeed_i2c_bus_recv(AspeedI2CBus *bus) =20 if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_BUFF_EN)) { uint8_t *pool_base =3D aic->bus_pool_base(bus); + if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, BUF_ORGANIZA= TION)) { + pool_base +=3D 16; + } =20 for (i =3D 0; i < pool_rx_count; i++) { pool_base[i] =3D i2c_recv(bus->bus); diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h index 2e1e15aaf0..a064479e59 100644 --- a/include/hw/i2c/aspeed_i2c.h +++ b/include/hw/i2c/aspeed_i2c.h @@ -143,6 +143,7 @@ REG32(I2CD_POOL_CTRL, 0x1C) /* Pool Buffer Control */ SHARED_FIELD(RX_SIZE, 16, 5) SHARED_FIELD(TX_COUNT, 8, 5) FIELD(I2CD_POOL_CTRL, OFFSET, 2, 6) /* AST2400 */ + SHARED_FIELD(BUF_ORGANIZATION, 0, 1) /* AST2600 */ REG32(I2CD_BYTE_BUF, 0x20) /* Transmit/Receive Byte Buffer */ SHARED_FIELD(RX_BUF, 8, 8) SHARED_FIELD(TX_BUF, 0, 8) --=20 2.39.2 (Apple Git-143)