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dma: Have dma_buf_read() / dma_buf_write() take a void pointer

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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 <k.jensen@samsung.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211223115554.3155328-9-philmd@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2021-12-16 11:27:23 +01:00
parent c0ee152735
commit 5e468a36dc
3 changed files with 15 additions and 15 deletions
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22
hw/scsi/megasas.c
View file

@ -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;
}

4
include/sysemu/dma.h
View file

@ -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);

4
softmmu/dma-helpers.c
View file

@ -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);
}