diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2012-05-15 14:17:35 +0800 |
|---|---|---|
| committer | Bob Liu <lliubbo@gmail.com> | 2012-05-21 14:54:58 +0800 |
| commit | 913f2f2df797c45e92ab527022cd49deb6eee3ab (patch) | |
| tree | ecdc3b59ec9aec482792d8e77179702b7c77c23a /arch | |
| parent | 8bf7135fff46f6ac28baf28a8e4144f685b456a0 (diff) | |
| download | linux-913f2f2df797c45e92ab527022cd49deb6eee3ab.tar.bz2 | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/blackfin/include/asm/bfin_serial.h | 12 | ||||
| -rw-r--r-- | arch/blackfin/mach-bf609/include/mach/anomaly.h | 2 |
2 files changed, 14 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bfin_serial.h b/arch/blackfin/include/asm/bfin_serial.h index 235c72a1f92d..8597158010b5 100644 --- a/arch/blackfin/include/asm/bfin_serial.h +++ b/arch/blackfin/include/asm/bfin_serial.h @@ -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) diff --git a/arch/blackfin/mach-bf609/include/mach/anomaly.h b/arch/blackfin/mach-bf609/include/mach/anomaly.h index 97a9c65bbe32..bdd39aefb565 100644 --- a/arch/blackfin/mach-bf609/include/mach/anomaly.h +++ b/arch/blackfin/mach-bf609/include/mach/anomaly.h @@ -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) |