From 5e468a36dcdd8fd5eb04282842b72967a29875e4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Thu, 16 Dec 2021 11:27:23 +0100 Subject: dma: Have dma_buf_read() / dma_buf_write() take a void pointer MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit DMA operations are run on any kind of buffer, not arrays of uint8_t. Convert dma_buf_read/dma_buf_write functions to take a void pointer argument and save us pointless casts to uint8_t *. Remove this pointless casts in the megasas device model. Reviewed-by: Klaus Jensen Signed-off-by: Philippe Mathieu-Daudé Message-Id: <20211223115554.3155328-9-philmd@redhat.com> --- hw/scsi/megasas.c | 22 +++++++++++----------- include/sysemu/dma.h | 4 ++-- softmmu/dma-helpers.c | 4 ++-- 3 files changed, 15 insertions(+), 15 deletions(-) diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c index 14ec6d68bb..2dae33f675 100644 --- a/hw/scsi/megasas.c +++ b/hw/scsi/megasas.c @@ -848,7 +848,7 @@ static int megasas_ctrl_get_info(MegasasState *s, MegasasCmd *cmd) MFI_INFO_PDMIX_SATA | MFI_INFO_PDMIX_LD); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -878,7 +878,7 @@ static int megasas_mfc_get_defaults(MegasasState *s, MegasasCmd *cmd) info.disable_preboot_cli = 1; info.cluster_disable = 1; - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -899,7 +899,7 @@ static int megasas_dcmd_get_bios_info(MegasasState *s, MegasasCmd *cmd) info.expose_all_drives = 1; } - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -910,7 +910,7 @@ static int megasas_dcmd_get_fw_time(MegasasState *s, MegasasCmd *cmd) fw_time = cpu_to_le64(megasas_fw_time()); - cmd->iov_size -= dma_buf_read((uint8_t *)&fw_time, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&fw_time, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -937,7 +937,7 @@ static int megasas_event_info(MegasasState *s, MegasasCmd *cmd) info.shutdown_seq_num = cpu_to_le32(s->shutdown_event); info.boot_seq_num = cpu_to_le32(s->boot_event); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -1006,7 +1006,7 @@ static int megasas_dcmd_pd_get_list(MegasasState *s, MegasasCmd *cmd) info.size = cpu_to_le32(offset); info.count = cpu_to_le32(num_pd_disks); - cmd->iov_size -= dma_buf_read((uint8_t *)&info, offset, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, offset, &cmd->qsg); return MFI_STAT_OK; } @@ -1172,7 +1172,7 @@ static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd) info.ld_count = cpu_to_le32(num_ld_disks); trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1221,7 +1221,7 @@ static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd) info.size = dcmd_size; trace_megasas_dcmd_ld_get_list(cmd->index, num_ld_disks, max_ld_disks); - resid = dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + resid = dma_buf_read(&info, dcmd_size, &cmd->qsg); cmd->iov_size = dcmd_size - resid; return MFI_STAT_OK; } @@ -1390,7 +1390,7 @@ static int megasas_dcmd_cfg_read(MegasasState *s, MegasasCmd *cmd) ld_offset += sizeof(struct mfi_ld_config); } - cmd->iov_size -= dma_buf_read((uint8_t *)data, info->size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(data, info->size, &cmd->qsg); return MFI_STAT_OK; } @@ -1420,7 +1420,7 @@ static int megasas_dcmd_get_properties(MegasasState *s, MegasasCmd *cmd) info.ecc_bucket_leak_rate = cpu_to_le16(1440); info.expose_encl_devices = 1; - cmd->iov_size -= dma_buf_read((uint8_t *)&info, dcmd_size, &cmd->qsg); + cmd->iov_size -= dma_buf_read(&info, dcmd_size, &cmd->qsg); return MFI_STAT_OK; } @@ -1465,7 +1465,7 @@ static int megasas_dcmd_set_properties(MegasasState *s, MegasasCmd *cmd) dcmd_size); return MFI_STAT_INVALID_PARAMETER; } - dma_buf_write((uint8_t *)&info, dcmd_size, &cmd->qsg); + dma_buf_write(&info, dcmd_size, &cmd->qsg); trace_megasas_dcmd_unsupported(cmd->index, cmd->iov_size); return MFI_STAT_OK; } diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h index 97ff6f29f8..0d5b836013 100644 --- a/include/sysemu/dma.h +++ b/include/sysemu/dma.h @@ -302,8 +302,8 @@ BlockAIOCB *dma_blk_read(BlockBackend *blk, BlockAIOCB *dma_blk_write(BlockBackend *blk, QEMUSGList *sg, uint64_t offset, uint32_t align, BlockCompletionFunc *cb, void *opaque); -uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg); -uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg); +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg); void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, QEMUSGList *sg, enum BlockAcctType type); diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 09e29997ee..7f37548394 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -317,12 +317,12 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, return resid; } -uint64_t dma_buf_read(uint8_t *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) { return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE); } -uint64_t dma_buf_write(uint8_t *ptr, int32_t len, QEMUSGList *sg) +uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg) { return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE); } -- cgit v1.2.3