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xilinx_spips: Add missing dual-bus snoop commands 

Added additional commands to the switch to check for when snooping commands in
dual bus mode setups. Cleaned up code to use an enum.

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 848c116c711dab0af10729a487968384aadd9faf.1362373359.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Nathan Rossi 2013-03-15 16:41:59 +00:00 committed by Peter Maydell
parent e0891bd8bf
commit 08a9635b68
1 changed files with 24 additions and 7 deletions
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31
hw/xilinx_spips.c
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@ -115,6 +115,19 @@
#define SNOOP_NONE 0xFE
#define SNOOP_STRIPING 0
typedef enum {
READ = 0x3,
FAST_READ = 0xb,
DOR = 0x3b,
QOR = 0x6b,
DIOR = 0xbb,
QIOR = 0xeb,
PP = 0x2,
DPP = 0xa2,
QPP = 0x32,
} FlashCMD;
typedef struct {
SysBusDevice busdev;
MemoryRegion iomem;
@ -251,15 +264,19 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
switch (s->snoop_state) {
case (SNOOP_CHECKING):
switch (tx) { /* new instruction code */
case 0x0b: /* dual/quad output read DOR/QOR */
case 0x6b:
case READ: /* 3 address bytes, no dummy bytes/cycles */
case PP:
case DPP:
case QPP:
s->snoop_state = 3;
break;
case FAST_READ: /* 3 address bytes, 1 dummy byte */
case DOR:
case QOR:
case DIOR: /* FIXME: these vary between vendor - set to spansion */
s->snoop_state = 4;
break;
/* FIXME: these vary between vendor - set to spansion */
case 0xbb: /* high performance dual read DIOR */
s->snoop_state = 4;
break;
case 0xeb: /* high performance quad read QIOR */
case QIOR: /* 3 address bytes, 2 dummy bytes */
s->snoop_state = 6;
break;
default: