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omap_gpmc: Pull prefetch engine data into sub-struct 

Refactor the gpmc state structure so items relating to
the prefetch engine are in their own sub-struct and have
more useful names.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2011-08-28 16:22:20 +00:00
parent 856f2df771
commit ef20677ca6
1 changed files with 28 additions and 24 deletions
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52
hw/omap_gpmc.c
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@ -36,10 +36,6 @@ struct omap_gpmc_s {
uint16_t irqen;
uint16_t timeout;
uint16_t config;
uint32_t prefconfig[2];
int prefcontrol;
int preffifo;
int prefcount;
struct omap_gpmc_cs_file_s {
uint32_t config[7];
MemoryRegion *iomem;
@ -51,6 +47,13 @@ struct omap_gpmc_s {
int ecc_ptr;
uint32_t ecc_cfg;
ECCState ecc[9];
struct prefetch {
uint32_t config1; /* GPMC_PREFETCH_CONFIG1 */
uint32_t transfercount; /* GPMC_PREFETCH_CONFIG2:TRANSFERCOUNT */
int startengine; /* GPMC_PREFETCH_CONTROL:STARTENGINE */
int fifopointer; /* GPMC_PREFETCH_STATUS:FIFOPOINTER */
int count; /* GPMC_PREFETCH_STATUS:COUNTVALUE */
} prefetch;
};
#define OMAP_GPMC_8BIT 0
@ -243,11 +246,11 @@ void omap_gpmc_reset(struct omap_gpmc_s *s)
omap_gpmc_int_update(s);
s->timeout = 0;
s->config = 0xa00;
s->prefconfig[0] = 0x00004000;
s->prefconfig[1] = 0x00000000;
s->prefcontrol = 0;
s->preffifo = 0;
s->prefcount = 0;
s->prefetch.config1 = 0x00004000;
s->prefetch.transfercount = 0x00000000;
s->prefetch.startengine = 0;
s->prefetch.fifopointer = 0;
s->prefetch.count = 0;
for (i = 0; i < 8; i ++) {
omap_gpmc_cs_unmap(s, i);
s->cs_file[i].config[1] = 0x101001;
@ -363,16 +366,16 @@ static uint64_t omap_gpmc_read(void *opaque, target_phys_addr_t addr,
break;
case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
return s->prefconfig[0];
return s->prefetch.config1;
case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
return s->prefconfig[1];
return s->prefetch.transfercount;
case 0x1ec: /* GPMC_PREFETCH_CONTROL */
return s->prefcontrol;
return s->prefetch.startengine;
case 0x1f0: /* GPMC_PREFETCH_STATUS */
return (s->preffifo << 24) |
((s->preffifo >=
((s->prefconfig[0] >> 8) & 0x7f) ? 1 : 0) << 16) |
s->prefcount;
return (s->prefetch.fifopointer << 24) |
((s->prefetch.fifopointer >=
((s->prefetch.config1 >> 8) & 0x7f) ? 1 : 0) << 16) |
s->prefetch.count;
case 0x1f4: /* GPMC_ECC_CONFIG */
return s->ecc_cs;
@ -506,21 +509,22 @@ static void omap_gpmc_write(void *opaque, target_phys_addr_t addr,
break;
case 0x1e0: /* GPMC_PREFETCH_CONFIG1 */
s->prefconfig[0] = value & 0x7f8f7fbf;
s->prefetch.config1 = value & 0x7f8f7fbf;
/* TODO: update interrupts, fifos, dmas */
break;
case 0x1e4: /* GPMC_PREFETCH_CONFIG2 */
s->prefconfig[1] = value & 0x3fff;
s->prefetch.transfercount = value & 0x3fff;
break;
case 0x1ec: /* GPMC_PREFETCH_CONTROL */
s->prefcontrol = value & 1;
if (s->prefcontrol) {
if (s->prefconfig[0] & 1)
s->preffifo = 0x40;
else
s->preffifo = 0x00;
s->prefetch.startengine = value & 1;
if (s->prefetch.startengine) {
if (s->prefetch.config1 & 1) {
s->prefetch.fifopointer = 0x40;
} else {
s->prefetch.fifopointer = 0x00;
}
}
/* TODO: start */
break;