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blackfin: bf60x: anomaly: Add a temporary anomaly 0501001 

Add a temporary anomaly 0501001 for data loss in MMR reading if interrupted.
Add work around for bfin serial driver as well.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
This commit is contained in:
Sonic Zhang 2012-05-15 14:17:35 +08:00 committed by Bob Liu
parent 8bf7135fff
commit 913f2f2df7
2 changed files with 14 additions and 0 deletions
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12
arch/blackfin/include/asm/bfin_serial.h
View File

@ -282,7 +282,19 @@ struct bfin_uart_regs {
#define UART_GET_GCTL(p) UART_GET_CTL(p)
#define UART_GET_LCR(p) UART_GET_CTL(p)
#define UART_GET_MCR(p) UART_GET_CTL(p)
#if ANOMALY_05001001
#define UART_GET_STAT(p) \
({ \
u32 __ret; \
unsigned long flags; \
flags = hard_local_irq_save(); \
__ret = bfin_read32(port_membase(p) + OFFSET_STAT); \
hard_local_irq_restore(flags); \
__ret; \
})
#else
#define UART_GET_STAT(p) bfin_read32(port_membase(p) + OFFSET_STAT)
#endif
#define UART_GET_MSR(p) UART_GET_STAT(p)
#define UART_PUT_CHAR(p, v) bfin_write32(port_membase(p) + OFFSET_THR, v)

2
arch/blackfin/mach-bf609/include/mach/anomaly.h
View File

@ -57,6 +57,8 @@
#define ANOMALY_05000481 (1)
/* IFLUSH sucks at life */
#define ANOMALY_05000491 (1)
/* Tempopary anomaly ID for data loss in MMR read operation if interrupted */
#define ANOMALY_05001001 (__SILICON_REVISION__ < 1)
/* Anomalies that don't exist on this proc */
#define ANOMALY_05000099 (0)