From patchwork Sat Sep 9 13:05:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 1831902 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RjYGB4rYwz1ygR for ; Sat, 9 Sep 2023 23:09:06 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qexh6-0005Py-1E; Sat, 09 Sep 2023 09:08:12 -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 1qexh4-0005Do-Ku; Sat, 09 Sep 2023 09:08:10 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qexh1-0003wf-Q1; Sat, 09 Sep 2023 09:08:10 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 68F1C205ED; Sat, 9 Sep 2023 16:06:10 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 114DB26E40; Sat, 9 Sep 2023 16:05:19 +0300 (MSK) Received: (nullmailer pid 354357 invoked by uid 1000); Sat, 09 Sep 2023 13:05:12 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Hang Yu , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Michael Tokarev Subject: [Stable-7.2.6 32/37] hw/i2c/aspeed: Fix Tx count and Rx size error in buffer pool mode Date: Sat, 9 Sep 2023 16:05:02 +0300 Message-Id: <20230909130511.354171-32-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Hang Yu 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: Cédric Le Goater Signed-off-by: Cédric Le Goater (cherry picked from commit 97b8aa5ae9ff197394395eda5062ea3681e09c28) Signed-off-by: Michael Tokarev diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index c166fd20fa..7a394fa2bf 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 = aspeed_i2c_bus_byte_buf_offset(bus); uint32_t reg_dma_len = aspeed_i2c_bus_dma_len_offset(bus); int pool_tx_count = SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, - TX_COUNT); + TX_COUNT) + 1; if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, TX_BUFF_EN)) { for (i = pool_start; i < pool_tx_count; i++) { @@ -293,7 +293,7 @@ static void aspeed_i2c_bus_recv(AspeedI2CBus *bus) uint32_t reg_dma_len = aspeed_i2c_bus_dma_len_offset(bus); uint32_t reg_dma_addr = aspeed_i2c_bus_dma_addr_offset(bus); int pool_rx_count = SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, - RX_COUNT); + RX_SIZE) + 1; if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_BUFF_EN)) { uint8_t *pool_base = aic->bus_pool_base(bus); @@ -418,7 +418,7 @@ static void aspeed_i2c_bus_cmd_dump(AspeedI2CBus *bus) uint32_t reg_intr_sts = aspeed_i2c_bus_intr_sts_offset(bus); uint32_t reg_dma_len = aspeed_i2c_bus_dma_len_offset(bus); if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_BUFF_EN)) { - count = SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COUNT); + count = SHARED_ARRAY_FIELD_EX32(bus->regs, reg_pool_ctrl, TX_COUNT) + 1; } else if (SHARED_ARRAY_FIELD_EX32(bus->regs, reg_cmd, RX_DMA_EN)) { count = 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) - == 1) { + == 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 adc904d6c1..91d0e7157c 100644 --- a/include/hw/i2c/aspeed_i2c.h +++ b/include/hw/i2c/aspeed_i2c.h @@ -132,9 +132,9 @@ 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)