From patchwork Mon May 27 08:02:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jamin Lin X-Patchwork-Id: 13674787 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 8E943C25B74 for ; Mon, 27 May 2024 08:04:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBVKb-0001Zy-Io; Mon, 27 May 2024 04:03:45 -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 1sBVK5-0000kI-8b; Mon, 27 May 2024 04:03:13 -0400 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX01.aspeed.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBVK3-0005H2-Ar; Mon, 27 May 2024 04:03:12 -0400 Received: from TWMBX02.aspeed.com (192.168.0.24) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1258.12; Mon, 27 May 2024 16:02:35 +0800 Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 27 May 2024 16:02:36 +0800 Received: from localhost.localdomain (192.168.10.10) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1258.12 via Frontend Transport; Mon, 27 May 2024 16:02:35 +0800 To: =?utf-8?q?C=C3=A9dric_Le_Goater?= , Peter Maydell , Andrew Jeffery , Joel Stanley , Alistair Francis , Cleber Rosa , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Wainer dos Santos Moschetta , Beraldo Leal , "open list:ASPEED BMCs" , "open list:All patches CC here" CC: , , Subject: [PATCH v4 07/16] aspeed/smc: support dma start length and 1 byte length unit Date: Mon, 27 May 2024 16:02:21 +0800 Message-ID: <20240527080231.1576609-8-jamin_lin@aspeedtech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240527080231.1576609-1-jamin_lin@aspeedtech.com> References: <20240527080231.1576609-1-jamin_lin@aspeedtech.com> MIME-Version: 1.0 Received-SPF: Fail (TWMBX02.aspeed.com: domain of jamin_lin@aspeedtech.com does not designate 192.168.10.10 as permitted sender) receiver=TWMBX02.aspeed.com; client-ip=192.168.10.10; helo=localhost.localdomain; Received-SPF: pass client-ip=211.20.114.72; envelope-from=jamin_lin@aspeedtech.com; helo=TWMBX01.aspeed.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_FAIL=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: , Reply-to: Jamin Lin X-Patchwork-Original-From: Jamin Lin via From: Jamin Lin Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org DMA length is from 1 byte to 32MB for AST2600 and AST10x0 and DMA length is from 4 bytes to 32MB for AST2500. In other words, if "R_DMA_LEN" is 0, it should move at least 1 byte data for AST2600 and AST10x0 and 4 bytes data for AST2500. To support all ASPEED SOCs, adds dma_start_length parameter to store the start length, add helper routines function to compute the dma length and update DMA_LENGTH mask to "1FFFFFF" to support dma 1 byte length unit for AST2600 and AST1030. Currently, only supports dma length 4 bytes aligned. Signed-off-by: Troy Lee Signed-off-by: Jamin Lin Reviewed-by: Cédric Le Goater --- hw/ssi/aspeed_smc.c | 43 ++++++++++++++++++++++++++++++------- include/hw/ssi/aspeed_smc.h | 1 + 2 files changed, 36 insertions(+), 8 deletions(-) diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c index 8a8d77b480..ffb13a12e8 100644 --- a/hw/ssi/aspeed_smc.c +++ b/hw/ssi/aspeed_smc.c @@ -178,13 +178,17 @@ * DMA flash addresses should be 4 bytes aligned and the valid address * range is 0x20000000 - 0x2FFFFFFF. * - * DMA length is from 4 bytes to 32MB + * DMA length is from 4 bytes to 32MB (AST2500) * 0: 4 bytes - * 0x7FFFFF: 32M bytes + * 0x1FFFFFC: 32M bytes + * + * DMA length is from 1 byte to 32MB (AST2600, AST10x0) + * 0: 1 byte + * 0x1FFFFFF: 32M bytes */ #define DMA_DRAM_ADDR(asc, val) ((val) & (asc)->dma_dram_mask) #define DMA_FLASH_ADDR(asc, val) ((val) & (asc)->dma_flash_mask) -#define DMA_LENGTH(val) ((val) & 0x01FFFFFC) +#define DMA_LENGTH(val) ((val) & 0x01FFFFFF) /* Flash opcodes. */ #define SPI_OP_READ 0x03 /* Read data bytes (low frequency) */ @@ -843,6 +847,13 @@ static bool aspeed_smc_inject_read_failure(AspeedSMCState *s) } } +static uint32_t aspeed_smc_dma_len(AspeedSMCState *s) +{ + AspeedSMCClass *asc = ASPEED_SMC_GET_CLASS(s); + + return QEMU_ALIGN_UP(s->regs[R_DMA_LEN] + asc->dma_start_length, 4); +} + /* * Accumulate the result of the reads to provide a checksum that will * be used to validate the read timing settings. @@ -850,6 +861,7 @@ static bool aspeed_smc_inject_read_failure(AspeedSMCState *s) static void aspeed_smc_dma_checksum(AspeedSMCState *s) { MemTxResult result; + uint32_t dma_len; uint32_t data; if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) { @@ -861,7 +873,9 @@ static void aspeed_smc_dma_checksum(AspeedSMCState *s) aspeed_smc_dma_calibration(s); } - while (s->regs[R_DMA_LEN]) { + dma_len = aspeed_smc_dma_len(s); + + while (dma_len) { data = address_space_ldl_le(&s->flash_as, s->regs[R_DMA_FLASH_ADDR], MEMTXATTRS_UNSPECIFIED, &result); if (result != MEMTX_OK) { @@ -877,7 +891,8 @@ static void aspeed_smc_dma_checksum(AspeedSMCState *s) */ s->regs[R_DMA_CHECKSUM] += data; s->regs[R_DMA_FLASH_ADDR] += 4; - s->regs[R_DMA_LEN] -= 4; + dma_len -= 4; + s->regs[R_DMA_LEN] = dma_len; } if (s->inject_failure && aspeed_smc_inject_read_failure(s)) { @@ -889,14 +904,17 @@ static void aspeed_smc_dma_checksum(AspeedSMCState *s) static void aspeed_smc_dma_rw(AspeedSMCState *s) { MemTxResult result; + uint32_t dma_len; uint32_t data; + dma_len = aspeed_smc_dma_len(s); + trace_aspeed_smc_dma_rw(s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE ? "write" : "read", s->regs[R_DMA_FLASH_ADDR], s->regs[R_DMA_DRAM_ADDR], - s->regs[R_DMA_LEN]); - while (s->regs[R_DMA_LEN]) { + dma_len); + while (dma_len) { if (s->regs[R_DMA_CTRL] & DMA_CTRL_WRITE) { data = address_space_ldl_le(&s->dram_as, s->regs[R_DMA_DRAM_ADDR], MEMTXATTRS_UNSPECIFIED, &result); @@ -937,7 +955,8 @@ static void aspeed_smc_dma_rw(AspeedSMCState *s) */ s->regs[R_DMA_FLASH_ADDR] += 4; s->regs[R_DMA_DRAM_ADDR] += 4; - s->regs[R_DMA_LEN] -= 4; + dma_len -= 4; + s->regs[R_DMA_LEN] = dma_len; s->regs[R_DMA_CHECKSUM] += data; } } @@ -1381,6 +1400,7 @@ static void aspeed_2400_fmc_class_init(ObjectClass *klass, void *data) asc->features = ASPEED_SMC_FEATURE_DMA; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x1FFFFFFC; + asc->dma_start_length = 4; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_smc_segment_to_reg; asc->reg_to_segment = aspeed_smc_reg_to_segment; @@ -1464,6 +1484,7 @@ static void aspeed_2500_fmc_class_init(ObjectClass *klass, void *data) asc->features = ASPEED_SMC_FEATURE_DMA; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x3FFFFFFC; + asc->dma_start_length = 4; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_smc_segment_to_reg; asc->reg_to_segment = aspeed_smc_reg_to_segment; @@ -1620,6 +1641,7 @@ static void aspeed_2600_fmc_class_init(ObjectClass *klass, void *data) ASPEED_SMC_FEATURE_WDT_CONTROL; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x3FFFFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_2600_smc_segment_to_reg; asc->reg_to_segment = aspeed_2600_smc_reg_to_segment; @@ -1658,6 +1680,7 @@ static void aspeed_2600_spi1_class_init(ObjectClass *klass, void *data) ASPEED_SMC_FEATURE_DMA_GRANT; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x3FFFFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_2600_smc_segment_to_reg; asc->reg_to_segment = aspeed_2600_smc_reg_to_segment; @@ -1697,6 +1720,7 @@ static void aspeed_2600_spi2_class_init(ObjectClass *klass, void *data) ASPEED_SMC_FEATURE_DMA_GRANT; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x3FFFFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_2600_smc_segment_to_reg; asc->reg_to_segment = aspeed_2600_smc_reg_to_segment; @@ -1778,6 +1802,7 @@ static void aspeed_1030_fmc_class_init(ObjectClass *klass, void *data) asc->features = ASPEED_SMC_FEATURE_DMA; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x000BFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_1030_smc_segment_to_reg; asc->reg_to_segment = aspeed_1030_smc_reg_to_segment; @@ -1815,6 +1840,7 @@ static void aspeed_1030_spi1_class_init(ObjectClass *klass, void *data) asc->features = ASPEED_SMC_FEATURE_DMA; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x000BFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_2600_smc_segment_to_reg; asc->reg_to_segment = aspeed_2600_smc_reg_to_segment; @@ -1851,6 +1877,7 @@ static void aspeed_1030_spi2_class_init(ObjectClass *klass, void *data) asc->features = ASPEED_SMC_FEATURE_DMA; asc->dma_flash_mask = 0x0FFFFFFC; asc->dma_dram_mask = 0x000BFFFC; + asc->dma_start_length = 1; asc->nregs = ASPEED_SMC_R_MAX; asc->segment_to_reg = aspeed_2600_smc_segment_to_reg; asc->reg_to_segment = aspeed_2600_smc_reg_to_segment; diff --git a/include/hw/ssi/aspeed_smc.h b/include/hw/ssi/aspeed_smc.h index 8e1dda556b..f359ed22cc 100644 --- a/include/hw/ssi/aspeed_smc.h +++ b/include/hw/ssi/aspeed_smc.h @@ -106,6 +106,7 @@ struct AspeedSMCClass { uint32_t features; hwaddr dma_flash_mask; hwaddr dma_dram_mask; + uint32_t dma_start_length; uint32_t nregs; uint32_t (*segment_to_reg)(const AspeedSMCState *s, const AspeedSegments *seg);