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60e7a82f1a
Fix the multiword DMA and drop the single-word DMA support (which nobody will
miss, I think). In order to do it, a number of changes was necessary:
- rename program_drive_counts() to program_cycle_times(), pass to it cycle's
total/active times instead of the clock counts, and convert them into the
active/recovery clocks there instead of cmd64x_tune_pio() -- this causes
quantize_timing() to also move;
- contrarywise, move all the code handling the address setup timing into
cmd64x_tune_pio(), so that setting MWDMA mode wouldn't change address setup;
- remove from the speedproc() method the bogus code pretending to set the DMA
timings by twiddling bits in the BMIDE status register, handle setting MWDMA
by just calling program_cycle_times(); while at it, improve the style of that
whole switch statement;
- stop fiddling with the DMA capable bits in the speedproc() method -- they do
not enable DMA, and are properly dealt with by the dma_host_{on,off} methods;
- don't set hwif->swdma_mask in the init_hwif() method anymore.
In addition to those changes, do the following:
- in cmd64x_tune_pio(), when writing to ARTTIM23 register preserve the interrupt
status bit, eliminate local_irq_{save|restore}() around this code as there's
*no* actual race with the interrupt handler, and move cmdprintk() to a more
fitting place -- after ide_get_best_pio_mode() call;
- make {arttim|drwtim}_regs arrays single-dimensional, indexed with drive->dn;
- rename {setup|recovery}_counts[] into more fitting {setup|recovery}_values[];
- in the speedproc() method, get rid of the duplicate reads/writes from/to the
UDIDETCRx registers and of the extra variable used to store the transfer mode
value after filtering, use another method of determining master/slave drive,
and cleanup useless parens;
- beautify cmdprintk() output here and there.
While at it, remove meaningless comment about the driver being used only on
UltraSPARC and long non-relevant RCS tag. :-)
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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| .. | ||
| aec62xx.c | ||
| alim15x3.c | ||
| amd74xx.c | ||
| atiixp.c | ||
| cmd64x.c | ||
| cmd640.c | ||
| cs5520.c | ||
| cs5530.c | ||
| cs5535.c | ||
| cy82c693.c | ||
| delkin_cb.c | ||
| generic.c | ||
| hpt34x.c | ||
| hpt366.c | ||
| it821x.c | ||
| it8213.c | ||
| jmicron.c | ||
| Makefile | ||
| ns87415.c | ||
| opti621.c | ||
| pdc202xx_new.c | ||
| pdc202xx_old.c | ||
| piix.c | ||
| rz1000.c | ||
| sc1200.c | ||
| scc_pata.c | ||
| serverworks.c | ||
| sgiioc4.c | ||
| siimage.c | ||
| sis5513.c | ||
| sl82c105.c | ||
| slc90e66.c | ||
| tc86c001.c | ||
| triflex.c | ||
| trm290.c | ||
| via82cxxx.c | ||