diff options
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/meson.build | 1 | ||||
| -rw-r--r-- | hw/dma/omap_dma.c | 451 | ||||
| -rw-r--r-- | hw/dma/pxa2xx_dma.c | 591 |
3 files changed, 3 insertions, 1040 deletions
diff --git a/hw/dma/meson.build b/hw/dma/meson.build index dd7781961e..cc7810beb8 100644 --- a/hw/dma/meson.build +++ b/hw/dma/meson.build @@ -9,7 +9,6 @@ system_ss.add(when: 'CONFIG_STP2000', if_true: files('sparc32_dma.c')) system_ss.add(when: 'CONFIG_XLNX_ZYNQMP_ARM', if_true: files('xlnx_dpdma.c')) system_ss.add(when: 'CONFIG_XLNX_ZDMA', if_true: files('xlnx-zdma.c')) system_ss.add(when: 'CONFIG_OMAP', if_true: files('omap_dma.c', 'soc_dma.c')) -system_ss.add(when: 'CONFIG_PXA2XX', if_true: files('pxa2xx_dma.c')) system_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_dma.c')) system_ss.add(when: 'CONFIG_SIFIVE_PDMA', if_true: files('sifive_pdma.c')) system_ss.add(when: 'CONFIG_XLNX_CSU_DMA', if_true: files('xlnx_csu_dma.c')) diff --git a/hw/dma/omap_dma.c b/hw/dma/omap_dma.c index 77797a67b5..9a8c3c34a0 100644 --- a/hw/dma/omap_dma.c +++ b/hw/dma/omap_dma.c @@ -686,10 +686,7 @@ void omap_dma_reset(struct soc_dma_s *dma) struct omap_dma_s *s = dma->opaque; soc_dma_reset(s->dma); - if (s->model < omap_dma_4) - s->gcr = 0x0004; - else - s->gcr = 0x00010010; + s->gcr = 0x0004; s->ocp = 0x00000000; memset(&s->irqstat, 0, sizeof(s->irqstat)); memset(&s->irqen, 0, sizeof(s->irqen)); @@ -697,8 +694,7 @@ void omap_dma_reset(struct soc_dma_s *dma) s->lcd_ch.condition = 0; s->lcd_ch.interrupts = 0; s->lcd_ch.dual = 0; - if (s->model < omap_dma_4) - omap_dma_enable_3_1_mapping(s); + omap_dma_enable_3_1_mapping(s); for (i = 0; i < s->chans; i ++) { s->ch[i].suspend = 0; s->ch[i].prefetch = 0; @@ -721,10 +717,7 @@ void omap_dma_reset(struct soc_dma_s *dma) s->ch[i].repeat = 0; s->ch[i].auto_init = 0; s->ch[i].link_enabled = 0; - if (s->model < omap_dma_4) - s->ch[i].interrupts = 0x0003; - else - s->ch[i].interrupts = 0x0000; + s->ch[i].interrupts = 0x0003; s->ch[i].status = 0; s->ch[i].cstatus = 0; s->ch[i].active = 0; @@ -1587,7 +1580,6 @@ static void omap_dma_setcaps(struct omap_dma_s *s) case omap_dma_3_1: break; case omap_dma_3_2: - case omap_dma_4: /* XXX Only available for sDMA */ s->caps[0] = (1 << 19) | /* Constant Fill Capability */ @@ -1678,443 +1670,6 @@ struct soc_dma_s *omap_dma_init(hwaddr base, qemu_irq *irqs, return s->dma; } -static void omap_dma_interrupts_4_update(struct omap_dma_s *s) -{ - struct omap_dma_channel_s *ch = s->ch; - uint32_t bmp, bit; - - for (bmp = 0, bit = 1; bit; ch ++, bit <<= 1) - if (ch->status) { - bmp |= bit; - ch->cstatus |= ch->status; - ch->status = 0; - } - if ((s->irqstat[0] |= s->irqen[0] & bmp)) - qemu_irq_raise(s->irq[0]); - if ((s->irqstat[1] |= s->irqen[1] & bmp)) - qemu_irq_raise(s->irq[1]); - if ((s->irqstat[2] |= s->irqen[2] & bmp)) - qemu_irq_raise(s->irq[2]); - if ((s->irqstat[3] |= s->irqen[3] & bmp)) - qemu_irq_raise(s->irq[3]); -} - -static uint64_t omap_dma4_read(void *opaque, hwaddr addr, - unsigned size) -{ - struct omap_dma_s *s = opaque; - int irqn = 0, chnum; - struct omap_dma_channel_s *ch; - - if (size == 1) { - return omap_badwidth_read16(opaque, addr); - } - - switch (addr) { - case 0x00: /* DMA4_REVISION */ - return 0x40; - - case 0x14: /* DMA4_IRQSTATUS_L3 */ - irqn ++; - /* fall through */ - case 0x10: /* DMA4_IRQSTATUS_L2 */ - irqn ++; - /* fall through */ - case 0x0c: /* DMA4_IRQSTATUS_L1 */ - irqn ++; - /* fall through */ - case 0x08: /* DMA4_IRQSTATUS_L0 */ - return s->irqstat[irqn]; - - case 0x24: /* DMA4_IRQENABLE_L3 */ - irqn ++; - /* fall through */ - case 0x20: /* DMA4_IRQENABLE_L2 */ - irqn ++; - /* fall through */ - case 0x1c: /* DMA4_IRQENABLE_L1 */ - irqn ++; - /* fall through */ - case 0x18: /* DMA4_IRQENABLE_L0 */ - return s->irqen[irqn]; - - case 0x28: /* DMA4_SYSSTATUS */ - return 1; /* RESETDONE */ - - case 0x2c: /* DMA4_OCP_SYSCONFIG */ - return s->ocp; - - case 0x64: /* DMA4_CAPS_0 */ - return s->caps[0]; - case 0x6c: /* DMA4_CAPS_2 */ - return s->caps[2]; - case 0x70: /* DMA4_CAPS_3 */ - return s->caps[3]; - case 0x74: /* DMA4_CAPS_4 */ - return s->caps[4]; - - case 0x78: /* DMA4_GCR */ - return s->gcr; - - case 0x80 ... 0xfff: - addr -= 0x80; - chnum = addr / 0x60; - ch = s->ch + chnum; - addr -= chnum * 0x60; - break; - - default: - OMAP_BAD_REG(addr); - return 0; - } - - /* Per-channel registers */ - switch (addr) { - case 0x00: /* DMA4_CCR */ - return (ch->buf_disable << 25) | - (ch->src_sync << 24) | - (ch->prefetch << 23) | - ((ch->sync & 0x60) << 14) | - (ch->bs << 18) | - (ch->transparent_copy << 17) | - (ch->constant_fill << 16) | - (ch->mode[1] << 14) | - (ch->mode[0] << 12) | - (0 << 10) | (0 << 9) | - (ch->suspend << 8) | - (ch->enable << 7) | - (ch->priority << 6) | - (ch->fs << 5) | (ch->sync & 0x1f); - - case 0x04: /* DMA4_CLNK_CTRL */ - return (ch->link_enabled << 15) | ch->link_next_ch; - - case 0x08: /* DMA4_CICR */ - return ch->interrupts; - - case 0x0c: /* DMA4_CSR */ - return ch->cstatus; - - case 0x10: /* DMA4_CSDP */ - return (ch->endian[0] << 21) | - (ch->endian_lock[0] << 20) | - (ch->endian[1] << 19) | - (ch->endian_lock[1] << 18) | - (ch->write_mode << 16) | - (ch->burst[1] << 14) | - (ch->pack[1] << 13) | - (ch->translate[1] << 9) | - (ch->burst[0] << 7) | - (ch->pack[0] << 6) | - (ch->translate[0] << 2) | - (ch->data_type >> 1); - - case 0x14: /* DMA4_CEN */ - return ch->elements; - - case 0x18: /* DMA4_CFN */ - return ch->frames; - - case 0x1c: /* DMA4_CSSA */ - return ch->addr[0]; - - case 0x20: /* DMA4_CDSA */ - return ch->addr[1]; - - case 0x24: /* DMA4_CSEI */ - return ch->element_index[0]; - - case 0x28: /* DMA4_CSFI */ - return ch->frame_index[0]; - - case 0x2c: /* DMA4_CDEI */ - return ch->element_index[1]; - - case 0x30: /* DMA4_CDFI */ - return ch->frame_index[1]; - - case 0x34: /* DMA4_CSAC */ - return ch->active_set.src & 0xffff; - - case 0x38: /* DMA4_CDAC */ - return ch->active_set.dest & 0xffff; - - case 0x3c: /* DMA4_CCEN */ - return ch->active_set.element; - - case 0x40: /* DMA4_CCFN */ - return ch->active_set.frame; - - case 0x44: /* DMA4_COLOR */ - /* XXX only in sDMA */ - return ch->color; - - default: - OMAP_BAD_REG(addr); - return 0; - } -} - -static void omap_dma4_write(void *opaque, hwaddr addr, - uint64_t value, unsigned size) -{ - struct omap_dma_s *s = opaque; - int chnum, irqn = 0; - struct omap_dma_channel_s *ch; - - if (size == 1) { - omap_badwidth_write16(opaque, addr, value); - return; - } - - switch (addr) { - case 0x14: /* DMA4_IRQSTATUS_L3 */ - irqn ++; - /* fall through */ - case 0x10: /* DMA4_IRQSTATUS_L2 */ - irqn ++; - /* fall through */ - case 0x0c: /* DMA4_IRQSTATUS_L1 */ - irqn ++; - /* fall through */ - case 0x08: /* DMA4_IRQSTATUS_L0 */ - s->irqstat[irqn] &= ~value; - if (!s->irqstat[irqn]) - qemu_irq_lower(s->irq[irqn]); - return; - - case 0x24: /* DMA4_IRQENABLE_L3 */ - irqn ++; - /* fall through */ - case 0x20: /* DMA4_IRQENABLE_L2 */ - irqn ++; - /* fall through */ - case 0x1c: /* DMA4_IRQENABLE_L1 */ - irqn ++; - /* fall through */ - case 0x18: /* DMA4_IRQENABLE_L0 */ - s->irqen[irqn] = value; - return; - - case 0x2c: /* DMA4_OCP_SYSCONFIG */ - if (value & 2) /* SOFTRESET */ - omap_dma_reset(s->dma); - s->ocp = value & 0x3321; - if (((s->ocp >> 12) & 3) == 3) { /* MIDLEMODE */ - qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid DMA power mode\n", - __func__); - } - return; - - case 0x78: /* DMA4_GCR */ - s->gcr = value & 0x00ff00ff; - if ((value & 0xff) == 0x00) { /* MAX_CHANNEL_FIFO_DEPTH */ - qemu_log_mask(LOG_GUEST_ERROR, "%s: wrong FIFO depth in GCR\n", - __func__); - } - return; - - case 0x80 ... 0xfff: - addr -= 0x80; - chnum = addr / 0x60; - ch = s->ch + chnum; - addr -= chnum * 0x60; - break; - - case 0x00: /* DMA4_REVISION */ - case 0x28: /* DMA4_SYSSTATUS */ - case 0x64: /* DMA4_CAPS_0 */ - case 0x6c: /* DMA4_CAPS_2 */ - case 0x70: /* DMA4_CAPS_3 */ - case 0x74: /* DMA4_CAPS_4 */ - OMAP_RO_REG(addr); - return; - - default: - OMAP_BAD_REG(addr); - return; - } - - /* Per-channel registers */ - switch (addr) { - case 0x00: /* DMA4_CCR */ - ch->buf_disable = (value >> 25) & 1; - ch->src_sync = (value >> 24) & 1; /* XXX For CamDMA must be 1 */ - if (ch->buf_disable && !ch->src_sync) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: Buffering disable is not allowed in " - "destination synchronised mode\n", __func__); - } - ch->prefetch = (value >> 23) & 1; - ch->bs = (value >> 18) & 1; - ch->transparent_copy = (value >> 17) & 1; - ch->constant_fill = (value >> 16) & 1; - ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14); - ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12); - ch->suspend = (value & 0x0100) >> 8; - ch->priority = (value & 0x0040) >> 6; - ch->fs = (value & 0x0020) >> 5; - if (ch->fs && ch->bs && ch->mode[0] && ch->mode[1]) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: For a packet transfer at least one port " - "must be constant-addressed\n", __func__); - } - ch->sync = (value & 0x001f) | ((value >> 14) & 0x0060); - /* XXX must be 0x01 for CamDMA */ - - if (value & 0x0080) - omap_dma_enable_channel(s, ch); - else - omap_dma_disable_channel(s, ch); - - break; - - case 0x04: /* DMA4_CLNK_CTRL */ - ch->link_enabled = (value >> 15) & 0x1; - ch->link_next_ch = value & 0x1f; - break; - - case 0x08: /* DMA4_CICR */ - ch->interrupts = value & 0x09be; - break; - - case 0x0c: /* DMA4_CSR */ - ch->cstatus &= ~value; - break; - - case 0x10: /* DMA4_CSDP */ - ch->endian[0] =(value >> 21) & 1; - ch->endian_lock[0] =(value >> 20) & 1; - ch->endian[1] =(value >> 19) & 1; - ch->endian_lock[1] =(value >> 18) & 1; - if (ch->endian[0] != ch->endian[1]) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: DMA endianness conversion enable attempt\n", - __func__); - } - ch->write_mode = (value >> 16) & 3; - ch->burst[1] = (value & 0xc000) >> 14; - ch->pack[1] = (value & 0x2000) >> 13; - ch->translate[1] = (value & 0x1e00) >> 9; - ch->burst[0] = (value & 0x0180) >> 7; - ch->pack[0] = (value & 0x0040) >> 6; - ch->translate[0] = (value & 0x003c) >> 2; - if (ch->translate[0] | ch->translate[1]) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: bad MReqAddressTranslate sideband signal\n", - __func__); - } - ch->data_type = 1 << (value & 3); - if ((value & 3) == 3) { - qemu_log_mask(LOG_GUEST_ERROR, - "%s: bad data_type for DMA channel\n", __func__); - ch->data_type >>= 1; - } - break; - - case 0x14: /* DMA4_CEN */ - ch->set_update = 1; - ch->elements = value & 0xffffff; - break; - - case 0x18: /* DMA4_CFN */ - ch->frames = value & 0xffff; - ch->set_update = 1; - break; - - case 0x1c: /* DMA4_CSSA */ - ch->addr[0] = (hwaddr) (uint32_t) value; - ch->set_update = 1; - break; - - case 0x20: /* DMA4_CDSA */ - ch->addr[1] = (hwaddr) (uint32_t) value; - ch->set_update = 1; - break; - - case 0x24: /* DMA4_CSEI */ - ch->element_index[0] = (int16_t) value; - ch->set_update = 1; - break; - - case 0x28: /* DMA4_CSFI */ - ch->frame_index[0] = (int32_t) value; - ch->set_update = 1; - break; - - case 0x2c: /* DMA4_CDEI */ - ch->element_index[1] = (int16_t) value; - ch->set_update = 1; - break; - - case 0x30: /* DMA4_CDFI */ - ch->frame_index[1] = (int32_t) value; - ch->set_update = 1; - break; - - case 0x44: /* DMA4_COLOR */ - /* XXX only in sDMA */ - ch->color = value; - break; - - case 0x34: /* DMA4_CSAC */ - case 0x38: /* DMA4_CDAC */ - case 0x3c: /* DMA4_CCEN */ - case 0x40: /* DMA4_CCFN */ - OMAP_RO_REG(addr); - break; - - default: - OMAP_BAD_REG(addr); - } -} - -static const MemoryRegionOps omap_dma4_ops = { - .read = omap_dma4_read, - .write = omap_dma4_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -struct soc_dma_s *omap_dma4_init(hwaddr base, qemu_irq *irqs, - MemoryRegion *sysmem, - struct omap_mpu_state_s *mpu, int fifo, - int chans, omap_clk iclk, omap_clk fclk) -{ - int i; - struct omap_dma_s *s = g_new0(struct omap_dma_s, 1); - - s->model = omap_dma_4; - s->chans = chans; - s->mpu = mpu; - s->clk = fclk; - - s->dma = soc_dma_init(s->chans); - s->dma->freq = omap_clk_getrate(fclk); - s->dma->transfer_fn = omap_dma_transfer_generic; - s->dma->setup_fn = omap_dma_transfer_setup; - s->dma->drq = qemu_allocate_irqs(omap_dma_request, s, 64); - s->dma->opaque = s; - for (i = 0; i < s->chans; i ++) { - s->ch[i].dma = &s->dma->ch[i]; - s->dma->ch[i].opaque = &s->ch[i]; - } - - memcpy(&s->irq, irqs, sizeof(s->irq)); - s->intr_update = omap_dma_interrupts_4_update; - - omap_dma_setcaps(s); - omap_clk_adduser(s->clk, qemu_allocate_irq(omap_dma_clk_update, s, 0)); - omap_dma_reset(s->dma); - omap_dma_clk_update(s, 0, !!s->dma->freq); - - memory_region_init_io(&s->iomem, NULL, &omap_dma4_ops, s, "omap.dma4", 0x1000); - memory_region_add_subregion(sysmem, base, &s->iomem); - - mpu->drq = s->dma->drq; - - return s->dma; -} - struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct soc_dma_s *dma) { struct omap_dma_s *s = dma->opaque; diff --git a/hw/dma/pxa2xx_dma.c b/hw/dma/pxa2xx_dma.c deleted file mode 100644 index 9f62f0b633..0000000000 --- a/hw/dma/pxa2xx_dma.c +++ /dev/null @@ -1,591 +0,0 @@ -/* - * Intel XScale PXA255/270 DMA controller. - * - * Copyright (c) 2006 Openedhand Ltd. - * Copyright (c) 2006 Thorsten Zitterell - * Written by Andrzej Zaborowski <balrog@zabor.org> - * - * This code is licensed under the GPL. - */ - -#include "qemu/osdep.h" -#include "qemu/log.h" -#include "hw/hw.h" -#include "hw/irq.h" -#include "hw/qdev-properties.h" -#include "hw/arm/pxa.h" -#include "hw/sysbus.h" -#include "migration/vmstate.h" -#include "qapi/error.h" -#include "qemu/module.h" -#include "qom/object.h" - -#define PXA255_DMA_NUM_CHANNELS 16 -#define PXA27X_DMA_NUM_CHANNELS 32 - -#define PXA2XX_DMA_NUM_REQUESTS 75 - -typedef struct { - uint32_t descr; - uint32_t src; - uint32_t dest; - uint32_t cmd; - uint32_t state; - int request; -} PXA2xxDMAChannel; - -#define TYPE_PXA2XX_DMA "pxa2xx-dma" -OBJECT_DECLARE_SIMPLE_TYPE(PXA2xxDMAState, PXA2XX_DMA) - -struct PXA2xxDMAState { - SysBusDevice parent_obj; - - MemoryRegion iomem; - qemu_irq irq; - - uint32_t stopintr; - uint32_t eorintr; - uint32_t rasintr; - uint32_t startintr; - uint32_t endintr; - - uint32_t align; - uint32_t pio; - - int channels; - PXA2xxDMAChannel *chan; - - uint8_t req[PXA2XX_DMA_NUM_REQUESTS]; - - /* Flag to avoid recursive DMA invocations. */ - int running; -}; - -#define DCSR0 0x0000 /* DMA Control / Status register for Channel 0 */ -#define DCSR31 0x007c /* DMA Control / Status register for Channel 31 */ -#define DALGN 0x00a0 /* DMA Alignment register */ -#define DPCSR 0x00a4 /* DMA Programmed I/O Control Status register */ -#define DRQSR0 0x00e0 /* DMA DREQ<0> Status register */ -#define DRQSR1 0x00e4 /* DMA DREQ<1> Status register */ -#define DRQSR2 0x00e8 /* DMA DREQ<2> Status register */ -#define DINT 0x00f0 /* DMA Interrupt register */ -#define DRCMR0 0x0100 /* Request to Channel Map register 0 */ -#define DRCMR63 0x01fc /* Request to Channel Map register 63 */ -#define D_CH0 0x0200 /* Channel 0 Descriptor start */ -#define DRCMR64 0x1100 /* Request to Channel Map register 64 */ -#define DRCMR74 0x1128 /* Request to Channel Map register 74 */ - -/* Per-channel register */ -#define DDADR 0x00 -#define DSADR 0x01 -#define DTADR 0x02 -#define DCMD 0x03 - -/* Bit-field masks */ -#define DRCMR_CHLNUM 0x1f -#define DRCMR_MAPVLD (1 << 7) -#define DDADR_STOP (1 << 0) -#define DDADR_BREN (1 << 1) -#define DCMD_LEN 0x1fff -#define DCMD_WIDTH(x) (1 << ((((x) >> 14) & 3) - 1)) -#define DCMD_SIZE(x) (4 << (((x) >> 16) & 3)) -#define DCMD_FLYBYT (1 << 19) -#define DCMD_FLYBYS (1 << 20) -#define DCMD_ENDIRQEN (1 << 21) -#define DCMD_STARTIRQEN (1 << 22) -#define DCMD_CMPEN (1 << 25) -#define DCMD_FLOWTRG (1 << 28) -#define DCMD_FLOWSRC (1 << 29) -#define DCMD_INCTRGADDR (1 << 30) -#define DCMD_INCSRCADDR (1 << 31) -#define DCSR_BUSERRINTR (1 << 0) -#define DCSR_STARTINTR (1 << 1) -#define DCSR_ENDINTR (1 << 2) -#define DCSR_STOPINTR (1 << 3) -#define DCSR_RASINTR (1 << 4) -#define DCSR_REQPEND (1 << 8) -#define DCSR_EORINT (1 << 9) -#define DCSR_CMPST (1 << 10) -#define DCSR_MASKRUN (1 << 22) -#define DCSR_RASIRQEN (1 << 23) -#define DCSR_CLRCMPST (1 << 24) -#define DCSR_SETCMPST (1 << 25) -#define DCSR_EORSTOPEN (1 << 26) -#define DCSR_EORJMPEN (1 << 27) -#define DCSR_EORIRQEN (1 << 28) -#define DCSR_STOPIRQEN (1 << 29) -#define DCSR_NODESCFETCH (1 << 30) -#define DCSR_RUN (1 << 31) - -static inline void pxa2xx_dma_update(PXA2xxDMAState *s, int ch) -{ - if (ch >= 0) { - if ((s->chan[ch].state & DCSR_STOPIRQEN) && - (s->chan[ch].state & DCSR_STOPINTR)) - s->stopintr |= 1 << ch; - else - s->stopintr &= ~(1 << ch); - - if ((s->chan[ch].state & DCSR_EORIRQEN) && - (s->chan[ch].state & DCSR_EORINT)) - s->eorintr |= 1 << ch; - else - s->eorintr &= ~(1 << ch); - - if ((s->chan[ch].state & DCSR_RASIRQEN) && - (s->chan[ch].state & DCSR_RASINTR)) - s->rasintr |= 1 << ch; - else - s->rasintr &= ~(1 << ch); - - if (s->chan[ch].state & DCSR_STARTINTR) - s->startintr |= 1 << ch; - else - s->startintr &= ~(1 << ch); - - if (s->chan[ch].state & DCSR_ENDINTR) - s->endintr |= 1 << ch; - else - s->endintr &= ~(1 << ch); - } - - if (s->stopintr | s->eorintr | s->rasintr | s->startintr | s->endintr) - qemu_irq_raise(s->irq); - else - qemu_irq_lower(s->irq); -} - -static inline void pxa2xx_dma_descriptor_fetch( - PXA2xxDMAState *s, int ch) -{ - uint32_t desc[4]; - hwaddr daddr = s->chan[ch].descr & ~0xf; - if ((s->chan[ch].descr & DDADR_BREN) && (s->chan[ch].state & DCSR_CMPST)) - daddr += 32; - - cpu_physical_memory_read(daddr, desc, 16); - s->chan[ch].descr = desc[DDADR]; - s->chan[ch].src = desc[DSADR]; - s->chan[ch].dest = desc[DTADR]; - s->chan[ch].cmd = desc[DCMD]; - - if (s->chan[ch].cmd & DCMD_FLOWSRC) - s->chan[ch].src &= ~3; - if (s->chan[ch].cmd & DCMD_FLOWTRG) - s->chan[ch].dest &= ~3; - - if (s->chan[ch].cmd & (DCMD_CMPEN | DCMD_FLYBYS | DCMD_FLYBYT)) - printf("%s: unsupported mode in channel %i\n", __func__, ch); - - if (s->chan[ch].cmd & DCMD_STARTIRQEN) - s->chan[ch].state |= DCSR_STARTINTR; -} - -static void pxa2xx_dma_run(PXA2xxDMAState *s) -{ - int c, srcinc, destinc; - uint32_t n, size; - uint32_t width; - uint32_t length; - uint8_t buffer[32]; - PXA2xxDMAChannel *ch; - - if (s->running ++) - return; - - while (s->running) { - s->running = 1; - for (c = 0; c < s->channels; c ++) { - ch = &s->chan[c]; - - while ((ch->state & DCSR_RUN) && !(ch->state & DCSR_STOPINTR)) { - /* Test for pending requests */ - if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) && !ch->request) - break; - - length = ch->cmd & DCMD_LEN; - size = DCMD_SIZE(ch->cmd); - width = DCMD_WIDTH(ch->cmd); - - srcinc = (ch->cmd & DCMD_INCSRCADDR) ? width : 0; - destinc = (ch->cmd & DCMD_INCTRGADDR) ? width : 0; - - while (length) { - size = MIN(length, size); - - for (n = 0; n < size; n += width) { - cpu_physical_memory_read(ch->src, buffer + n, width); - ch->src += srcinc; - } - - for (n = 0; n < size; n += width) { - cpu_physical_memory_write(ch->dest, buffer + n, width); - ch->dest += destinc; - } - - length -= size; - - if ((ch->cmd & (DCMD_FLOWSRC | DCMD_FLOWTRG)) && - !ch->request) { - ch->state |= DCSR_EORINT; - if (ch->state & DCSR_EORSTOPEN) - ch->state |= DCSR_STOPINTR; - if ((ch->state & DCSR_EORJMPEN) && - !(ch->state & DCSR_NODESCFETCH)) - pxa2xx_dma_descriptor_fetch(s, c); - break; - } - } - - ch->cmd = (ch->cmd & ~DCMD_LEN) | length; - - /* Is the transfer complete now? */ - if (!length) { - if (ch->cmd & DCMD_ENDIRQEN) - ch->state |= DCSR_ENDINTR; - - if ((ch->state & DCSR_NODESCFETCH) || - (ch->descr & DDADR_STOP) || - (ch->state & DCSR_EORSTOPEN)) { - ch->state |= DCSR_STOPINTR; - ch->state &= ~DCSR_RUN; - - break; - } - - ch->state |= DCSR_STOPINTR; - break; - } - } - } - - s->running --; - } -} - -static uint64_t pxa2xx_dma_read(void *opaque, hwaddr offset, - unsigned size) -{ - PXA2xxDMAState *s = (PXA2xxDMAState *) opaque; - unsigned int channel; - - if (size != 4) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad access width %u\n", - __func__, size); - return 5; - } - - switch (offset) { - case DRCMR64 ... DRCMR74: - offset -= DRCMR64 - DRCMR0 - (64 << 2); - /* Fall through */ - case DRCMR0 ... DRCMR63: - channel = (offset - DRCMR0) >> 2; - return s->req[channel]; - - case DRQSR0: - case DRQSR1: - case DRQSR2: - return 0; - - case DCSR0 ... DCSR31: - channel = offset >> 2; - if (s->chan[channel].request) - return s->chan[channel].state | DCSR_REQPEND; - return s->chan[channel].state; - - case DINT: - return s->stopintr | s->eorintr | s->rasintr | - s->startintr | s->endintr; - - case DALGN: - return s->align; - - case DPCSR: - return s->pio; - } - - if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) { - channel = (offset - D_CH0) >> 4; - switch ((offset & 0x0f) >> 2) { - case DDADR: - return s->chan[channel].descr; - case DSADR: - return s->chan[channel].src; - case DTADR: - return s->chan[channel].dest; - case DCMD: - return s->chan[channel].cmd; - } - } - qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n", - __func__, offset); - return 7; -} - -static void pxa2xx_dma_write(void *opaque, hwaddr offset, - uint64_t value, unsigned size) -{ - PXA2xxDMAState *s = (PXA2xxDMAState *) opaque; - unsigned int channel; - - if (size != 4) { - qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad access width %u\n", - __func__, size); - return; - } - - switch (offset) { - case DRCMR64 ... DRCMR74: - offset -= DRCMR64 - DRCMR0 - (64 << 2); - /* Fall through */ - case DRCMR0 ... DRCMR63: - channel = (offset - DRCMR0) >> 2; - - if (value & DRCMR_MAPVLD) - if ((value & DRCMR_CHLNUM) > s->channels) - hw_error("%s: Bad DMA channel %i\n", - __func__, (unsigned)value & DRCMR_CHLNUM); - - s->req[channel] = value; - break; - - case DRQSR0: - case DRQSR1: - case DRQSR2: - /* Nothing to do */ - break; - - case DCSR0 ... DCSR31: - channel = offset >> 2; - s->chan[channel].state &= 0x0000071f & ~(value & - (DCSR_EORINT | DCSR_ENDINTR | - DCSR_STARTINTR | DCSR_BUSERRINTR)); - s->chan[channel].state |= value & 0xfc800000; - - if (s->chan[channel].state & DCSR_STOPIRQEN) - s->chan[channel].state &= ~DCSR_STOPINTR; - - if (value & DCSR_NODESCFETCH) { - /* No-descriptor-fetch mode */ - if (value & DCSR_RUN) { - s->chan[channel].state &= ~DCSR_STOPINTR; - pxa2xx_dma_run(s); - } - } else { - /* Descriptor-fetch mode */ - if (value & DCSR_RUN) { - s->chan[channel].state &= ~DCSR_STOPINTR; - pxa2xx_dma_descriptor_fetch(s, channel); - pxa2xx_dma_run(s); - } - } - - /* Shouldn't matter as our DMA is synchronous. */ - if (!(value & (DCSR_RUN | DCSR_MASKRUN))) - s->chan[channel].state |= DCSR_STOPINTR; - - if (value & DCSR_CLRCMPST) - s->chan[channel].state &= ~DCSR_CMPST; - if (value & DCSR_SETCMPST) - s->chan[channel].state |= DCSR_CMPST; - - pxa2xx_dma_update(s, channel); - break; - - case DALGN: - s->align = value; - break; - - case DPCSR: - s->pio = value & 0x80000001; - break; - - default: - if (offset >= D_CH0 && offset < D_CH0 + (s->channels << 4)) { - channel = (offset - D_CH0) >> 4; - switch ((offset & 0x0f) >> 2) { - case DDADR: - s->chan[channel].descr = value; - break; - case DSADR: - s->chan[channel].src = value; - break; - case DTADR: - s->chan[channel].dest = value; - break; - case DCMD: - s->chan[channel].cmd = value; - break; - default: - goto fail; - } - - break; - } - fail: - qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n", - __func__, offset); - } -} - -static const MemoryRegionOps pxa2xx_dma_ops = { - .read = pxa2xx_dma_read, - .write = pxa2xx_dma_write, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void pxa2xx_dma_request(void *opaque, int req_num, int on) -{ - PXA2xxDMAState *s = opaque; - int ch; - if (req_num < 0 || req_num >= PXA2XX_DMA_NUM_REQUESTS) - hw_error("%s: Bad DMA request %i\n", __func__, req_num); - - if (!(s->req[req_num] & DRCMR_MAPVLD)) - return; - ch = s->req[req_num] & DRCMR_CHLNUM; - - if (!s->chan[ch].request && on) - s->chan[ch].state |= DCSR_RASINTR; - else - s->chan[ch].state &= ~DCSR_RASINTR; - if (s->chan[ch].request && !on) - s->chan[ch].state |= DCSR_EORINT; - - s->chan[ch].request = on; - if (on) { - pxa2xx_dma_run(s); - pxa2xx_dma_update(s, ch); - } -} - -static void pxa2xx_dma_init(Object *obj) -{ - DeviceState *dev = DEVICE(obj); - PXA2xxDMAState *s = PXA2XX_DMA(obj); - SysBusDevice *sbd = SYS_BUS_DEVICE(obj); - - memset(s->req, 0, sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS); - - qdev_init_gpio_in(dev, pxa2xx_dma_request, PXA2XX_DMA_NUM_REQUESTS); - - memory_region_init_io(&s->iomem, obj, &pxa2xx_dma_ops, s, - "pxa2xx.dma", 0x00010000); - sysbus_init_mmio(sbd, &s->iomem); - sysbus_init_irq(sbd, &s->irq); -} - -static void pxa2xx_dma_realize(DeviceState *dev, Error **errp) -{ - PXA2xxDMAState *s = PXA2XX_DMA(dev); - int i; - - if (s->channels <= 0) { - error_setg(errp, "channels value invalid"); - return; - } - - s->chan = g_new0(PXA2xxDMAChannel, s->channels); - - for (i = 0; i < s->channels; i ++) - s->chan[i].state = DCSR_STOPINTR; -} - -DeviceState *pxa27x_dma_init(hwaddr base, qemu_irq irq) -{ - DeviceState *dev; - - dev = qdev_new("pxa2xx-dma"); - qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS); - sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); - - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq); - - return dev; -} - -DeviceState *pxa255_dma_init(hwaddr base, qemu_irq irq) -{ - DeviceState *dev; - - dev = qdev_new("pxa2xx-dma"); - qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS); - sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); - - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); - sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq); - - return dev; -} - -static bool is_version_0(void *opaque, int version_id) -{ - return version_id == 0; -} - -static const VMStateDescription vmstate_pxa2xx_dma_chan = { - .name = "pxa2xx_dma_chan", - .version_id = 1, - .minimum_version_id = 1, - .fields = (const VMStateField[]) { - VMSTATE_UINT32(descr, PXA2xxDMAChannel), - VMSTATE_UINT32(src, PXA2xxDMAChannel), - VMSTATE_UINT32(dest, PXA2xxDMAChannel), - VMSTATE_UINT32(cmd, PXA2xxDMAChannel), - VMSTATE_UINT32(state, PXA2xxDMAChannel), - VMSTATE_INT32(request, PXA2xxDMAChannel), - VMSTATE_END_OF_LIST(), - }, -}; - -static const VMStateDescription vmstate_pxa2xx_dma = { - .name = "pxa2xx_dma", - .version_id = 1, - .minimum_version_id = 0, - .fields = (const VMStateField[]) { - VMSTATE_UNUSED_TEST(is_version_0, 4), - VMSTATE_UINT32(stopintr, PXA2xxDMAState), - VMSTATE_UINT32(eorintr, PXA2xxDMAState), - VMSTATE_UINT32(rasintr, PXA2xxDMAState), - VMSTATE_UINT32(startintr, PXA2xxDMAState), - VMSTATE_UINT32(endintr, PXA2xxDMAState), - VMSTATE_UINT32(align, PXA2xxDMAState), - VMSTATE_UINT32(pio, PXA2xxDMAState), - VMSTATE_BUFFER(req, PXA2xxDMAState), - VMSTATE_STRUCT_VARRAY_POINTER_INT32(chan, PXA2xxDMAState, channels, - vmstate_pxa2xx_dma_chan, PXA2xxDMAChannel), - VMSTATE_END_OF_LIST(), - }, -}; - -static Property pxa2xx_dma_properties[] = { - DEFINE_PROP_INT32("channels", PXA2xxDMAState, channels, -1), - DEFINE_PROP_END_OF_LIST(), -}; - -static void pxa2xx_dma_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->desc = "PXA2xx DMA controller"; - dc->vmsd = &vmstate_pxa2xx_dma; - device_class_set_props(dc, pxa2xx_dma_properties); - dc->realize = pxa2xx_dma_realize; -} - -static const TypeInfo pxa2xx_dma_info = { - .name = TYPE_PXA2XX_DMA, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(PXA2xxDMAState), - .instance_init = pxa2xx_dma_init, - .class_init = pxa2xx_dma_class_init, -}; - -static void pxa2xx_dma_register_types(void) -{ - type_register_static(&pxa2xx_dma_info); -} - -type_init(pxa2xx_dma_register_types) |