oneechanhax/phunix
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added boot environment option 'ata_no_dma' to disable DMA.

Browse Source
This commit is contained in:
Philip Homburg 2006-03-13 15:36:57 +00:00
parent 48b2be3ccc
commit 4ca6f516c6
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/at_wini/at_wini.c
View File

@ -252,7 +252,7 @@ struct command {
int timeout_ticks = DEF_TIMEOUT_TICKS, max_errors = MAX_ERRORS;
int wakeup_ticks = WAKEUP;
long w_standard_timeouts = 0, w_pci_debug = 0, w_instance = 0,
atapi_debug = 0;
disable_dma = 0, atapi_debug = 0;
int w_testing = 0, w_silent = 0;
@ -419,20 +419,19 @@ PRIVATE void init_params()
env_parse("ata_std_timeout", "d", 0, &w_standard_timeouts, 0, 1);
env_parse("ata_pci_debug", "d", 0, &w_pci_debug, 0, 1);
env_parse("ata_instance", "d", 0, &w_instance, 0, 8);
env_parse("ata_no_dma", "d", 0, &disable_dma, 0, 1);
env_parse("atapi_debug", "d", 0, &atapi_debug, 0, 1);
if (disable_dma)
printf("DMA for ATA devices is disabled.\n");
s= sys_umap(SELF, D, (vir_bytes)dma_buf, sizeof(dma_buf), &dma_buf_phys);
if (s != 0)
panic("at_wini", "can't map dma buffer", s);
printf("init_params: got phys 0x%x for dma buffer at 0x%x\n",
dma_buf_phys, (vir_bytes)dma_buf);
s= sys_umap(SELF, D, (vir_bytes)prdt, sizeof(prdt), &prdt_phys);
if (s != 0)
panic("at_wini", "can't map prd table", s);
printf("init_params: got phys 0x%x for prd table at 0x%x\n",
prdt_phys, (vir_bytes)prdt);
if (w_instance == 0) {
/* Get the number of drives from the BIOS data area */
@ -824,7 +823,9 @@ PRIVATE int w_identify()
NO_NUM);
}
}
if (id_dma && dma_base)
if (disable_dma)
; /* DMA is disabled */
else if (id_dma && dma_base)
{
w= id_word(ID_MULTIWORD_DMA);
if (w & (ID_MWDMA_2_SUP|ID_MWDMA_1_SUP|ID_MWDMA_0_SUP))