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Fri, 14 Jan 2022 07:28:55 -0800 From: Francisco Iglesias To: Subject: [PATCH v6 06/12] hw/dma/xlnx_csu_dma: Implement the DMA control interface Date: Fri, 14 Jan 2022 15:28:35 +0000 Message-ID: <20220114152841.1740-7-francisco.iglesias@xilinx.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20220114152841.1740-1-francisco.iglesias@xilinx.com> References: <20220114152841.1740-1-francisco.iglesias@xilinx.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 72f984d9-8147-43c0-e5b2-08d9d772947e X-MS-TrafficTypeDiagnostic: BN7PR02MB4180:EE_ X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:635; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.62.198; 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envelope-from=figlesia@xilinx.com; helo=NAM10-DM6-obe.outbound.protection.outlook.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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: , Cc: edgar.iglesias@xilinx.com, peter.maydell@linaro.org, frasse.iglesias@gmail.com, alistair@alistair23.me, alistair23@gmail.com, philmd@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Implement the DMA control interface for allowing direct control of DMA operations from inside peripheral models embedding (and reusing) the Xilinx CSU DMA. Signed-off-by: Francisco Iglesias --- hw/dma/xlnx_csu_dma.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/hw/dma/xlnx_csu_dma.c b/hw/dma/xlnx_csu_dma.c index 896bb3574d..58860d9f19 100644 --- a/hw/dma/xlnx_csu_dma.c +++ b/hw/dma/xlnx_csu_dma.c @@ -30,6 +30,7 @@ #include "hw/stream.h" #include "hw/register.h" #include "hw/dma/xlnx_csu_dma.h" +#include "hw/dma/dma-ctrl-if.h" /* * Ref: UG1087 (v1.7) February 8, 2019 @@ -472,6 +473,21 @@ static uint64_t addr_msb_pre_write(RegisterInfo *reg, uint64_t val) return val & R_ADDR_MSB_ADDR_MSB_MASK; } +static MemTxResult xlnx_csu_dma_dma_ctrl_if_read(DmaCtrlIf *dma, hwaddr addr, + uint32_t len) +{ + XlnxCSUDMA *s = XLNX_CSU_DMA(dma); + RegisterInfo *reg = &s->regs_info[R_SIZE]; + uint64_t we = MAKE_64BIT_MASK(0, 4 * 8); + + s->regs[R_ADDR] = addr; + s->regs[R_ADDR_MSB] = (uint64_t)addr >> 32; + + register_write(reg, len, we, object_get_typename(OBJECT(s)), false); + + return (s->regs[R_SIZE] == 0) ? MEMTX_OK : MEMTX_ERROR; +} + static const RegisterAccessInfo *xlnx_csu_dma_regs_info[] = { #define DMACH_REGINFO(NAME, snd) \ (const RegisterAccessInfo []) { \ @@ -696,6 +712,7 @@ static void xlnx_csu_dma_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); StreamSinkClass *ssc = STREAM_SINK_CLASS(klass); + DmaCtrlIfClass *dcic = DMA_CTRL_IF_CLASS(klass); dc->reset = xlnx_csu_dma_reset; dc->realize = xlnx_csu_dma_realize; @@ -704,6 +721,8 @@ static void xlnx_csu_dma_class_init(ObjectClass *klass, void *data) ssc->push = xlnx_csu_dma_stream_push; ssc->can_push = xlnx_csu_dma_stream_can_push; + + dcic->read = xlnx_csu_dma_dma_ctrl_if_read; } static void xlnx_csu_dma_init(Object *obj) @@ -731,6 +750,7 @@ static const TypeInfo xlnx_csu_dma_info = { .instance_init = xlnx_csu_dma_init, .interfaces = (InterfaceInfo[]) { { TYPE_STREAM_SINK }, + { TYPE_DMA_CTRL_IF }, { } } };