openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ETRAX-FS: Process outgoing DMA channels until EOL. 

For outgoing DMA channels, keep processing descriptors until hitting end
of list.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5553 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
edgar_igl 2008-10-27 20:44:27 +00:00
parent 31c18d8761
commit c968ef8df5
1 changed files with 61 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
hw/etraxfs_dma.c
View File

@ -393,9 +393,7 @@ static void channel_out_run(struct fs_dma_ctrl *ctrl, int c)
uint32_t saved_data_buf;
unsigned char buf[2 * 1024];
if (ctrl->channels[c].eol == 1)
return;
while (ctrl->channels[c].eol != 1) {
saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
D(printf("ch=%d buf=%x after=%x saved_data_buf=%x\n",
@ -404,7 +402,7 @@ static void channel_out_run(struct fs_dma_ctrl *ctrl, int c)
(uint32_t)ctrl->channels[c].current_d.after,
saved_data_buf));
len = (uint32_t)(unsigned long) ctrl->channels[c].current_d.after;
len = (uint32_t)ctrl->channels[c].current_d.after;
len -= saved_data_buf;
if (len > sizeof buf)
@ -416,14 +414,16 @@ static void channel_out_run(struct fs_dma_ctrl *ctrl, int c)
if (ctrl->channels[c].client->client.push)
ctrl->channels[c].client->client.push(
ctrl->channels[c].client->client.opaque, buf, len);
ctrl->channels[c].client->client.opaque,
buf, len);
else
printf("WARNING: DMA ch%d dataloss, no attached client.\n", c);
printf("WARNING: DMA ch%d dataloss,"
" no attached client.\n", c);
saved_data_buf += len;
if (saved_data_buf ==
(uint32_t)(unsigned long)ctrl->channels[c].current_d.after) {
(uint32_t)ctrl->channels[c].current_d.after) {
/* Done. Step to next. */
if (ctrl->channels[c].current_d.out_eop) {
/* TODO: signal eop to the client. */
@ -447,7 +447,7 @@ static void channel_out_run(struct fs_dma_ctrl *ctrl, int c)
channel_stop(ctrl, c);
} else {
ctrl->channels[c].regs[RW_SAVED_DATA] =
(uint32_t)(unsigned long) ctrl->channels[c].current_d.next;
(uint32_t)ctrl->channels[c].current_d.next;
/* Load new descriptor. */
channel_load_d(ctrl, c);
saved_data_buf = (uint32_t)(unsigned long)
@ -455,11 +455,13 @@ static void channel_out_run(struct fs_dma_ctrl *ctrl, int c)
}
channel_store_d(ctrl, c);
ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
saved_data_buf;
D(dump_d(c, &ctrl->channels[c].current_d));
}
ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf;
}
}
static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
unsigned char *buf, int buflen, int eop)
@ -471,7 +473,7 @@ static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
return 0;
saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
len = (uint32_t)(unsigned long) ctrl->channels[c].current_d.after;
len = (uint32_t)ctrl->channels[c].current_d.after;
len -= saved_data_buf;
if (len > buflen)
@ -481,7 +483,7 @@ static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
saved_data_buf += len;
if (saved_data_buf ==
(uint32_t)(unsigned long)ctrl->channels[c].current_d.after
(uint32_t)ctrl->channels[c].current_d.after
|| eop) {
uint32_t r_intr = ctrl->channels[c].regs[R_INTR];
@ -518,10 +520,10 @@ static int channel_in_process(struct fs_dma_ctrl *ctrl, int c,
channel_stop(ctrl, c);
} else {
ctrl->channels[c].regs[RW_SAVED_DATA] =
(uint32_t)(unsigned long) ctrl->channels[c].current_d.next;
(uint32_t)ctrl->channels[c].current_d.next;
/* Load new descriptor. */
channel_load_d(ctrl, c);
saved_data_buf = (uint32_t)(unsigned long)
saved_data_buf = (uint32_t)
ctrl->channels[c].current_d.buf;
}
}