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pp5020: Use DMA Writes by default for SSDs

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It is likely that these things accept data far faster than the spinning
rust drives ever would, and while there is a question about PIO timings,
DMA timings seem to be solid.

Change-Id: I70644e0ad85a6ed429c8704e66ca7af91d78765c
This commit is contained in:
Solomon Peachy 2024-04-12 08:25:35 -04:00
parent 886060475e
commit 4b423e21f6
1 changed files with 4 additions and 6 deletions
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10
firmware/target/arm/pp/ata-pp5020.c
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@ -173,15 +173,13 @@ bool ata_dma_setup(void *addr, unsigned long bytes, bool write) {
return false;
/* Writes only need to be word-aligned, but by default DMA
* is not used for writing as it appears to be slower.
* is not used for writing on non-SSDs as it appears to be slower.
*/
#ifdef ATA_DMA_WRITES
if (!ata_disk_isssd())
return false;
if (write && ((unsigned long)addr & 3))
return false;
#else
if (write)
return false;
#endif
#if ATA_MAX_UDMA > 2
if (dma_needs_boost && !dma_boosted) {