diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-31 08:31:57 +0100 |
| commit | a9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch) | |
| tree | 886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/powerpc/sysdev/bestcomm/bestcomm_priv.h | |
| parent | b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff) | |
| parent | 6a94cb73064c952255336cc57731904174b2c58f (diff) | |
Merge branch 'linus' into stackprotector
Conflicts:
arch/x86/include/asm/pda.h
kernel/fork.c
Diffstat (limited to 'arch/powerpc/sysdev/bestcomm/bestcomm_priv.h')
| -rw-r--r-- | arch/powerpc/sysdev/bestcomm/bestcomm_priv.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/bestcomm/bestcomm_priv.h b/arch/powerpc/sysdev/bestcomm/bestcomm_priv.h index 866a2915ef2..eb0d1c883c3 100644 --- a/arch/powerpc/sysdev/bestcomm/bestcomm_priv.h +++ b/arch/powerpc/sysdev/bestcomm/bestcomm_priv.h @@ -198,8 +198,8 @@ struct bcom_task_header { #define BCOM_IPR_SCTMR_1 2 #define BCOM_IPR_FEC_RX 6 #define BCOM_IPR_FEC_TX 5 -#define BCOM_IPR_ATA_RX 4 -#define BCOM_IPR_ATA_TX 3 +#define BCOM_IPR_ATA_RX 7 +#define BCOM_IPR_ATA_TX 7 #define BCOM_IPR_SCPCI_RX 2 #define BCOM_IPR_SCPCI_TX 2 #define BCOM_IPR_PSC3_RX 2 @@ -241,6 +241,22 @@ extern void bcom_set_initiator(int task, int initiator); #define TASK_ENABLE 0x8000 +/** + * bcom_disable_prefetch - Hook to disable bus prefetching + * + * ATA DMA and the original MPC5200 need this due to silicon bugs. At the + * moment disabling prefetch is a one-way street. There is no mechanism + * in place to turn prefetch back on after it has been disabled. There is + * no reason it couldn't be done, it would just be more complex to implement. + */ +static inline void bcom_disable_prefetch(void) +{ + u16 regval; + + regval = in_be16(&bcom_eng->regs->PtdCntrl); + out_be16(&bcom_eng->regs->PtdCntrl, regval | 1); +}; + static inline void bcom_enable_task(int task) { |