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FDC fix 10/10 (Hervé Poussineau): 

- Replaces access to cur_drv field by macros.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4290 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-04-29 16:18:58 +00:00
parent 78ae820cfe
commit cefec4f5dc
1 changed files with 25 additions and 19 deletions
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44
hw/fdc.c
View File

@ -49,6 +49,9 @@ do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0)
/********************************************************/
/* Floppy drive emulation */
#define GET_CUR_DRV(fdctrl) ((fdctrl)->cur_drv)
#define SET_CUR_DRV(fdctrl, drive) ((fdctrl)->cur_drv = (drive))
/* Will always be a fixed parameter for us */
#define FD_SECTOR_LEN 512
#define FD_SECTOR_SC 2 /* Sector size code */
@ -612,17 +615,18 @@ static void fdc_save (QEMUFile *f, void *opaque)
fdctrl_t *s = opaque;
uint8_t tmp;
int i;
uint8_t dor = s->dor | GET_CUR_DRV(s);
/* Controller state */
qemu_put_8s(f, &s->sra);
qemu_put_8s(f, &s->srb);
qemu_put_8s(f, &dor);
qemu_put_8s(f, &s->tdr);
qemu_put_8s(f, &s->dsr);
qemu_put_8s(f, &s->msr);
qemu_put_8s(f, &s->status0);
qemu_put_8s(f, &s->status1);
qemu_put_8s(f, &s->status2);
qemu_put_8s(f, &s->cur_drv);
/* Command FIFO */
qemu_put_buffer(f, s->fifo, FD_SECTOR_LEN);
qemu_put_be32s(f, &s->data_pos);
@ -665,13 +669,15 @@ static int fdc_load (QEMUFile *f, void *opaque, int version_id)
/* Controller state */
qemu_get_8s(f, &s->sra);
qemu_get_8s(f, &s->srb);
qemu_get_8s(f, &s->dor);
SET_CUR_DRV(s, s->dor & FD_DOR_SELMASK);
s->dor &= ~FD_DOR_SELMASK;
qemu_get_8s(f, &s->tdr);
qemu_get_8s(f, &s->dsr);
qemu_get_8s(f, &s->msr);
qemu_get_8s(f, &s->status0);
qemu_get_8s(f, &s->status1);
qemu_get_8s(f, &s->status2);
qemu_get_8s(f, &s->cur_drv);
/* Command FIFO */
qemu_get_buffer(f, s->fifo, FD_SECTOR_LEN);
qemu_get_be32s(f, &s->data_pos);
@ -1053,8 +1059,8 @@ static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0,
cur_drv = get_cur_drv(fdctrl);
FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
status0, status1, status2,
status0 | (cur_drv->head << 2) | fdctrl->cur_drv);
fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | fdctrl->cur_drv;
status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl));
fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
fdctrl->fifo[1] = status1;
fdctrl->fifo[2] = status2;
fdctrl->fifo[3] = cur_drv->track;
@ -1077,13 +1083,13 @@ static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction)
uint8_t kh, kt, ks;
int did_seek = 0;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[2];
kh = fdctrl->fifo[3];
ks = fdctrl->fifo[4];
FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
fdctrl->cur_drv, kh, kt, ks,
GET_CUR_DRV(fdctrl), kh, kt, ks,
_fd_sector(kh, kt, ks, cur_drv->last_sect));
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
@ -1218,7 +1224,7 @@ static int fdctrl_transfer_handler (void *opaque, int nchan,
len = FD_SECTOR_LEN - rel_pos;
FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
"(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
fdctrl->data_len, fdctrl->cur_drv, cur_drv->head,
fdctrl->data_len, GET_CUR_DRV(fdctrl), cur_drv->head,
cur_drv->track, cur_drv->sect, fd_sector(cur_drv),
fd_sector(cur_drv) * FD_SECTOR_LEN);
if (fdctrl->data_dir != FD_DIR_WRITE ||
@ -1347,13 +1353,13 @@ static void fdctrl_format_sector (fdctrl_t *fdctrl)
fdrive_t *cur_drv;
uint8_t kh, kt, ks;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
kt = fdctrl->fifo[6];
kh = fdctrl->fifo[7];
ks = fdctrl->fifo[8];
FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
fdctrl->cur_drv, kh, kt, ks,
GET_CUR_DRV(fdctrl), kh, kt, ks,
_fd_sector(kh, kt, ks, cur_drv->last_sect));
switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & FD_CONFIG_EIS)) {
case 2:
@ -1516,7 +1522,7 @@ static void fdctrl_handle_format_track (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
fdctrl->data_state |= FD_STATE_FORMAT;
if (fdctrl->fifo[0] & 0x80)
@ -1557,14 +1563,14 @@ static void fdctrl_handle_sense_drive_status (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
cur_drv->head = (fdctrl->fifo[1] >> 2) & 1;
/* 1 Byte status back */
fdctrl->fifo[0] = (cur_drv->ro << 6) |
(cur_drv->track == 0 ? 0x10 : 0x00) |
(cur_drv->head << 2) |
fdctrl->cur_drv |
GET_CUR_DRV(fdctrl) |
0x28;
fdctrl_set_fifo(fdctrl, 1, 0);
}
@ -1573,7 +1579,7 @@ static void fdctrl_handle_recalibrate (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
fd_recalibrate(cur_drv);
fdctrl_reset_fifo(fdctrl);
@ -1587,13 +1593,13 @@ static void fdctrl_handle_sense_interrupt_status (fdctrl_t *fdctrl, int directio
#if 0
fdctrl->fifo[0] =
fdctrl->status0 | (cur_drv->head << 2) | fdctrl->cur_drv;
fdctrl->status0 | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
#else
/* XXX: status0 handling is broken for read/write
commands, so we do this hack. It should be suppressed
ASAP */
fdctrl->fifo[0] =
FD_SR0_SEEK | (cur_drv->head << 2) | fdctrl->cur_drv;
FD_SR0_SEEK | (cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
#endif
fdctrl->fifo[1] = cur_drv->track;
fdctrl_set_fifo(fdctrl, 2, 0);
@ -1605,7 +1611,7 @@ static void fdctrl_handle_seek (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
fdctrl_reset_fifo(fdctrl);
if (fdctrl->fifo[2] > cur_drv->max_track) {
@ -1665,7 +1671,7 @@ static void fdctrl_handle_drive_specification_command (fdctrl_t *fdctrl, int dir
} else if (fdctrl->data_len > 7) {
/* ERROR */
fdctrl->fifo[0] = 0x80 |
(cur_drv->head << 2) | fdctrl->cur_drv;
(cur_drv->head << 2) | GET_CUR_DRV(fdctrl);
fdctrl_set_fifo(fdctrl, 1, 1);
}
}
@ -1674,7 +1680,7 @@ static void fdctrl_handle_relative_seek_out (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) {
cur_drv->track = cur_drv->max_track - 1;
@ -1690,7 +1696,7 @@ static void fdctrl_handle_relative_seek_in (fdctrl_t *fdctrl, int direction)
{
fdrive_t *cur_drv;
fdctrl->cur_drv = fdctrl->fifo[1] & FD_DOR_SELMASK;
SET_CUR_DRV(fdctrl, fdctrl->fifo[1] & FD_DOR_SELMASK);
cur_drv = get_cur_drv(fdctrl);
if (fdctrl->fifo[2] > cur_drv->track) {
cur_drv->track = 0;