* QEMU PowerPC 440 embedded processors emulation
*
* Copyright (c) 2012 François Revol
- * Copyright (c) 2016-2018 BALATON Zoltan
+ * Copyright (c) 2016-2019 BALATON Zoltan
*
* This work is licensed under the GNU GPL license version 2 or later.
*
*/
#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "qemu/cutils.h"
+#include "qemu/units.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
+#include "qemu/log.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
#include "cpu.h"
-#include "hw/hw.h"
+#include "hw/irq.h"
#include "exec/address-spaces.h"
#include "exec/memory.h"
#include "hw/ppc/ppc.h"
#include "hw/pci/pci.h"
#include "sysemu/block-backend.h"
+#include "sysemu/reset.h"
#include "ppc440.h"
/*****************************************************************************/
l2sram = g_malloc0(sizeof(*l2sram));
/* XXX: Size is 4*64kB for 460ex, cf. U-Boot, ppc4xx-isram.h */
memory_region_init_ram(&l2sram->bank[0], NULL, "ppc4xx.l2sram_bank0",
- 64 * K_BYTE, &error_abort);
+ 64 * KiB, &error_abort);
memory_region_init_ram(&l2sram->bank[1], NULL, "ppc4xx.l2sram_bank1",
- 64 * K_BYTE, &error_abort);
+ 64 * KiB, &error_abort);
memory_region_init_ram(&l2sram->bank[2], NULL, "ppc4xx.l2sram_bank2",
- 64 * K_BYTE, &error_abort);
+ 64 * KiB, &error_abort);
memory_region_init_ram(&l2sram->bank[3], NULL, "ppc4xx.l2sram_bank3",
- 64 * K_BYTE, &error_abort);
+ 64 * KiB, &error_abort);
qemu_register_reset(&l2sram_reset, l2sram);
ppc_dcr_register(env, DCR_L2CACHE_CFG,
l2sram, &dcr_read_l2sram, &dcr_write_l2sram);
/*****************************************************************************/
/* SDRAM controller */
-typedef struct ppc4xx_sdram_t {
+typedef struct ppc440_sdram_t {
uint32_t addr;
int nbanks;
MemoryRegion containers[4]; /* used for clipping */
hwaddr ram_bases[4];
hwaddr ram_sizes[4];
uint32_t bcr[4];
-} ppc4xx_sdram_t;
+} ppc440_sdram_t;
enum {
SDRAM0_CFGADDR = 0x10,
SDRAM_PLBADDUHB = 0x50,
};
-/* XXX: TOFIX: some patches have made this code become inconsistent:
- * there are type inconsistencies, mixing hwaddr, target_ulong
- * and uint32_t
- */
static uint32_t sdram_bcr(hwaddr ram_base, hwaddr ram_size)
{
uint32_t bcr;
switch (ram_size) {
- case (8 * M_BYTE):
+ case (8 * MiB):
bcr = 0xffc0;
break;
- case (16 * M_BYTE):
+ case (16 * MiB):
bcr = 0xff80;
break;
- case (32 * M_BYTE):
+ case (32 * MiB):
bcr = 0xff00;
break;
- case (64 * M_BYTE):
+ case (64 * MiB):
bcr = 0xfe00;
break;
- case (128 * M_BYTE):
+ case (128 * MiB):
bcr = 0xfc00;
break;
- case (256 * M_BYTE):
+ case (256 * MiB):
bcr = 0xf800;
break;
- case (512 * M_BYTE):
+ case (512 * MiB):
bcr = 0xf000;
break;
- case (1 * G_BYTE):
+ case (1 * GiB):
bcr = 0xe000;
break;
+ case (2 * GiB):
+ bcr = 0xc000;
+ break;
+ case (4 * GiB):
+ bcr = 0x8000;
+ break;
default:
error_report("invalid RAM size " TARGET_FMT_plx, ram_size);
return 0;
}
- bcr |= ram_base & 0xFF800000;
+ bcr |= ram_base >> 2 & 0xffe00000;
bcr |= 1;
return bcr;
static inline hwaddr sdram_base(uint32_t bcr)
{
- return bcr & 0xFF800000;
+ return (bcr & 0xffe00000) << 2;
}
-static target_ulong sdram_size(uint32_t bcr)
+static uint64_t sdram_size(uint32_t bcr)
{
- target_ulong size;
+ uint64_t size;
int sh;
sh = 1024 - ((bcr >> 6) & 0x3ff);
- if (sh == 0) {
- size = -1;
- } else {
- size = 8 * M_BYTE * sh;
- }
+ size = 8 * MiB * sh;
return size;
}
-static void sdram_set_bcr(ppc4xx_sdram_t *sdram,
- uint32_t *bcrp, uint32_t bcr, int enabled)
+static void sdram_set_bcr(ppc440_sdram_t *sdram, int i,
+ uint32_t bcr, int enabled)
{
- unsigned n = bcrp - sdram->bcr;
-
- if (*bcrp & 1) {
- /* Unmap RAM */
+ if (sdram->bcr[i] & 1) {
+ /* First unmap RAM if enabled */
memory_region_del_subregion(get_system_memory(),
- &sdram->containers[n]);
- memory_region_del_subregion(&sdram->containers[n],
- &sdram->ram_memories[n]);
- object_unparent(OBJECT(&sdram->containers[n]));
+ &sdram->containers[i]);
+ memory_region_del_subregion(&sdram->containers[i],
+ &sdram->ram_memories[i]);
+ object_unparent(OBJECT(&sdram->containers[i]));
}
- *bcrp = bcr & 0xFFDEE001;
+ sdram->bcr[i] = bcr & 0xffe0ffc1;
if (enabled && (bcr & 1)) {
- memory_region_init(&sdram->containers[n], NULL, "sdram-containers",
+ memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
sdram_size(bcr));
- memory_region_add_subregion(&sdram->containers[n], 0,
- &sdram->ram_memories[n]);
+ memory_region_add_subregion(&sdram->containers[i], 0,
+ &sdram->ram_memories[i]);
memory_region_add_subregion(get_system_memory(),
sdram_base(bcr),
- &sdram->containers[n]);
+ &sdram->containers[i]);
}
}
-static void sdram_map_bcr(ppc4xx_sdram_t *sdram)
+static void sdram_map_bcr(ppc440_sdram_t *sdram)
{
int i;
for (i = 0; i < sdram->nbanks; i++) {
if (sdram->ram_sizes[i] != 0) {
- sdram_set_bcr(sdram,
- &sdram->bcr[i],
- sdram_bcr(sdram->ram_bases[i], sdram->ram_sizes[i]),
- 1);
+ sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
+ sdram->ram_sizes[i]), 1);
} else {
- sdram_set_bcr(sdram, &sdram->bcr[i], 0, 0);
+ sdram_set_bcr(sdram, i, 0, 0);
}
}
}
static uint32_t dcr_read_sdram(void *opaque, int dcrn)
{
- ppc4xx_sdram_t *sdram = opaque;
+ ppc440_sdram_t *sdram = opaque;
uint32_t ret = 0;
switch (dcrn) {
case SDRAM_R1BAS:
case SDRAM_R2BAS:
case SDRAM_R3BAS:
- ret = sdram_bcr(sdram->ram_bases[dcrn - SDRAM_R0BAS],
- sdram->ram_sizes[dcrn - SDRAM_R0BAS]);
+ if (sdram->ram_sizes[dcrn - SDRAM_R0BAS]) {
+ ret = sdram_bcr(sdram->ram_bases[dcrn - SDRAM_R0BAS],
+ sdram->ram_sizes[dcrn - SDRAM_R0BAS]);
+ }
break;
case SDRAM_CONF1HB:
case SDRAM_CONF1LL:
static void dcr_write_sdram(void *opaque, int dcrn, uint32_t val)
{
- ppc4xx_sdram_t *sdram = opaque;
+ ppc440_sdram_t *sdram = opaque;
switch (dcrn) {
case SDRAM_R0BAS:
static void sdram_reset(void *opaque)
{
- ppc4xx_sdram_t *sdram = opaque;
+ ppc440_sdram_t *sdram = opaque;
sdram->addr = 0;
}
hwaddr *ram_bases, hwaddr *ram_sizes,
int do_init)
{
- ppc4xx_sdram_t *sdram;
+ ppc440_sdram_t *sdram;
sdram = g_malloc0(sizeof(*sdram));
sdram->nbanks = nbanks;
qemu_register_reset(ppc4xx_ahb_reset, ahb);
}
+/*****************************************************************************/
+/* DMA controller */
+
+#define DMA0_CR_CE (1 << 31)
+#define DMA0_CR_PW (1 << 26 | 1 << 25)
+#define DMA0_CR_DAI (1 << 24)
+#define DMA0_CR_SAI (1 << 23)
+#define DMA0_CR_DEC (1 << 2)
+
+enum {
+ DMA0_CR = 0x00,
+ DMA0_CT,
+ DMA0_SAH,
+ DMA0_SAL,
+ DMA0_DAH,
+ DMA0_DAL,
+ DMA0_SGH,
+ DMA0_SGL,
+
+ DMA0_SR = 0x20,
+ DMA0_SGC = 0x23,
+ DMA0_SLP = 0x25,
+ DMA0_POL = 0x26,
+};
+
+typedef struct {
+ uint32_t cr;
+ uint32_t ct;
+ uint64_t sa;
+ uint64_t da;
+ uint64_t sg;
+} PPC4xxDmaChnl;
+
+typedef struct {
+ int base;
+ PPC4xxDmaChnl ch[4];
+ uint32_t sr;
+} PPC4xxDmaState;
+
+static uint32_t dcr_read_dma(void *opaque, int dcrn)
+{
+ PPC4xxDmaState *dma = opaque;
+ uint32_t val = 0;
+ int addr = dcrn - dma->base;
+ int chnl = addr / 8;
+
+ switch (addr) {
+ case 0x00 ... 0x1f:
+ switch (addr % 8) {
+ case DMA0_CR:
+ val = dma->ch[chnl].cr;
+ break;
+ case DMA0_CT:
+ val = dma->ch[chnl].ct;
+ break;
+ case DMA0_SAH:
+ val = dma->ch[chnl].sa >> 32;
+ break;
+ case DMA0_SAL:
+ val = dma->ch[chnl].sa;
+ break;
+ case DMA0_DAH:
+ val = dma->ch[chnl].da >> 32;
+ break;
+ case DMA0_DAL:
+ val = dma->ch[chnl].da;
+ break;
+ case DMA0_SGH:
+ val = dma->ch[chnl].sg >> 32;
+ break;
+ case DMA0_SGL:
+ val = dma->ch[chnl].sg;
+ break;
+ }
+ break;
+ case DMA0_SR:
+ val = dma->sr;
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented register %x (%d, %x)\n",
+ __func__, dcrn, chnl, addr);
+ }
+
+ return val;
+}
+
+static void dcr_write_dma(void *opaque, int dcrn, uint32_t val)
+{
+ PPC4xxDmaState *dma = opaque;
+ int addr = dcrn - dma->base;
+ int chnl = addr / 8;
+
+ switch (addr) {
+ case 0x00 ... 0x1f:
+ switch (addr % 8) {
+ case DMA0_CR:
+ dma->ch[chnl].cr = val;
+ if (val & DMA0_CR_CE) {
+ int count = dma->ch[chnl].ct & 0xffff;
+
+ if (count) {
+ int width, i, sidx, didx;
+ uint8_t *rptr, *wptr;
+ hwaddr rlen, wlen;
+
+ sidx = didx = 0;
+ width = 1 << ((val & DMA0_CR_PW) >> 25);
+ rptr = cpu_physical_memory_map(dma->ch[chnl].sa, &rlen, 0);
+ wptr = cpu_physical_memory_map(dma->ch[chnl].da, &wlen, 1);
+ if (rptr && wptr) {
+ if (!(val & DMA0_CR_DEC) &&
+ val & DMA0_CR_SAI && val & DMA0_CR_DAI) {
+ /* optimise common case */
+ memmove(wptr, rptr, count * width);
+ sidx = didx = count * width;
+ } else {
+ /* do it the slow way */
+ for (sidx = didx = i = 0; i < count; i++) {
+ uint64_t v = ldn_le_p(rptr + sidx, width);
+ stn_le_p(wptr + didx, width, v);
+ if (val & DMA0_CR_SAI) {
+ sidx += width;
+ }
+ if (val & DMA0_CR_DAI) {
+ didx += width;
+ }
+ }
+ }
+ }
+ if (wptr) {
+ cpu_physical_memory_unmap(wptr, wlen, 1, didx);
+ }
+ if (rptr) {
+ cpu_physical_memory_unmap(rptr, rlen, 0, sidx);
+ }
+ }
+ }
+ break;
+ case DMA0_CT:
+ dma->ch[chnl].ct = val;
+ break;
+ case DMA0_SAH:
+ dma->ch[chnl].sa &= 0xffffffffULL;
+ dma->ch[chnl].sa |= (uint64_t)val << 32;
+ break;
+ case DMA0_SAL:
+ dma->ch[chnl].sa &= 0xffffffff00000000ULL;
+ dma->ch[chnl].sa |= val;
+ break;
+ case DMA0_DAH:
+ dma->ch[chnl].da &= 0xffffffffULL;
+ dma->ch[chnl].da |= (uint64_t)val << 32;
+ break;
+ case DMA0_DAL:
+ dma->ch[chnl].da &= 0xffffffff00000000ULL;
+ dma->ch[chnl].da |= val;
+ break;
+ case DMA0_SGH:
+ dma->ch[chnl].sg &= 0xffffffffULL;
+ dma->ch[chnl].sg |= (uint64_t)val << 32;
+ break;
+ case DMA0_SGL:
+ dma->ch[chnl].sg &= 0xffffffff00000000ULL;
+ dma->ch[chnl].sg |= val;
+ break;
+ }
+ break;
+ case DMA0_SR:
+ dma->sr &= ~val;
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: unimplemented register %x (%d, %x)\n",
+ __func__, dcrn, chnl, addr);
+ }
+}
+
+static void ppc4xx_dma_reset(void *opaque)
+{
+ PPC4xxDmaState *dma = opaque;
+ int dma_base = dma->base;
+
+ memset(dma, 0, sizeof(*dma));
+ dma->base = dma_base;
+}
+
+void ppc4xx_dma_init(CPUPPCState *env, int dcr_base)
+{
+ PPC4xxDmaState *dma;
+ int i;
+
+ dma = g_malloc0(sizeof(*dma));
+ dma->base = dcr_base;
+ qemu_register_reset(&ppc4xx_dma_reset, dma);
+ for (i = 0; i < 4; i++) {
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_CR,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_CT,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SAH,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SAL,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_DAH,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_DAL,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SGH,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + i * 8 + DMA0_SGL,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ }
+ ppc_dcr_register(env, dcr_base + DMA0_SR,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + DMA0_SGC,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + DMA0_SLP,
+ dma, &dcr_read_dma, &dcr_write_dma);
+ ppc_dcr_register(env, dcr_base + DMA0_POL,
+ dma, &dcr_read_dma, &dcr_write_dma);
+}
+
/*****************************************************************************/
/* PCI Express controller */
/* FIXME: This is not complete and does not work, only implemented partially
projects / qemu.git / blobdiff