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| author | Alexander Bulekov <alxndr@bu.edu> | 2021-01-19 11:40:51 -0500 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2021-02-15 15:10:14 +0100 |
| commit | 26941eb4ca485150494379cf8f0751f426208a5b (patch) | |
| tree | 7c94d5baac4c1920f73a876631affe4938a73b45 /hw/ide | |
| parent | 076d467aacdf6dc5d01e2e61740b1795f2aec2f6 (diff) | |
| download | qemu-26941eb4ca485150494379cf8f0751f426208a5b.zip qemu-26941eb4ca485150494379cf8f0751f426208a5b.tar.gz qemu-26941eb4ca485150494379cf8f0751f426208a5b.tar.bz2 | |
hw/ide/ahci: map cmd_fis as DMA_DIRECTION_TO_DEVICE
cmd_fis is mapped as DMA_DIRECTION_FROM_DEVICE, however, it is read
from, and not written to anywhere. Fix the DMA_DIRECTION and mark
cmd_fis as read-only in the code.
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20210119164051.89268-1-alxndr@bu.edu>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/ahci.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 6d50482..f2c5157 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -700,7 +700,7 @@ static void ahci_reset_port(AHCIState *s, int port) } /* Buffer pretty output based on a raw FIS structure. */ -static char *ahci_pretty_buffer_fis(uint8_t *fis, int cmd_len) +static char *ahci_pretty_buffer_fis(const uint8_t *fis, int cmd_len) { int i; GString *s = g_string_new("FIS:"); @@ -1100,11 +1100,11 @@ static void execute_ncq_command(NCQTransferState *ncq_tfs) } -static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, +static void process_ncq_command(AHCIState *s, int port, const uint8_t *cmd_fis, uint8_t slot) { AHCIDevice *ad = &s->dev[port]; - NCQFrame *ncq_fis = (NCQFrame*)cmd_fis; + const NCQFrame *ncq_fis = (NCQFrame *)cmd_fis; uint8_t tag = ncq_fis->tag >> 3; NCQTransferState *ncq_tfs = &ad->ncq_tfs[tag]; size_t size; @@ -1185,7 +1185,7 @@ static AHCICmdHdr *get_cmd_header(AHCIState *s, uint8_t port, uint8_t slot) } static void handle_reg_h2d_fis(AHCIState *s, int port, - uint8_t slot, uint8_t *cmd_fis) + uint8_t slot, const uint8_t *cmd_fis) { IDEState *ide_state = &s->dev[port].port.ifs[0]; AHCICmdHdr *cmd = get_cmd_header(s, port, slot); @@ -1301,7 +1301,7 @@ static int handle_cmd(AHCIState *s, int port, uint8_t slot) tbl_addr = le64_to_cpu(cmd->tbl_addr); cmd_len = 0x80; cmd_fis = dma_memory_map(s->as, tbl_addr, &cmd_len, - DMA_DIRECTION_FROM_DEVICE); + DMA_DIRECTION_TO_DEVICE); if (!cmd_fis) { trace_handle_cmd_badfis(s, port); return -1; @@ -1326,7 +1326,7 @@ static int handle_cmd(AHCIState *s, int port, uint8_t slot) } out: - dma_memory_unmap(s->as, cmd_fis, cmd_len, DMA_DIRECTION_FROM_DEVICE, + dma_memory_unmap(s->as, cmd_fis, cmd_len, DMA_DIRECTION_TO_DEVICE, cmd_len); if (s->dev[port].port.ifs[0].status & (BUSY_STAT|DRQ_STAT)) { |