diff options
Diffstat (limited to 'qemu/hw/dma/omap_dma.c')
| -rw-r--r-- | qemu/hw/dma/omap_dma.c | 2104 |
1 files changed, 2104 insertions, 0 deletions
diff --git a/qemu/hw/dma/omap_dma.c b/qemu/hw/dma/omap_dma.c new file mode 100644 index 000000000..97c57a03c --- /dev/null +++ b/qemu/hw/dma/omap_dma.c @@ -0,0 +1,2104 @@ +/* + * TI OMAP DMA gigacell. + * + * Copyright (C) 2006-2008 Andrzej Zaborowski <balrog@zabor.org> + * Copyright (C) 2007-2008 Lauro Ramos Venancio <lauro.venancio@indt.org.br> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, see <http://www.gnu.org/licenses/>. + */ +#include "qemu-common.h" +#include "qemu/timer.h" +#include "hw/arm/omap.h" +#include "hw/irq.h" +#include "hw/arm/soc_dma.h" + +struct omap_dma_channel_s { + /* transfer data */ + int burst[2]; + int pack[2]; + int endian[2]; + int endian_lock[2]; + int translate[2]; + enum omap_dma_port port[2]; + hwaddr addr[2]; + omap_dma_addressing_t mode[2]; + uint32_t elements; + uint16_t frames; + int32_t frame_index[2]; + int16_t element_index[2]; + int data_type; + + /* transfer type */ + int transparent_copy; + int constant_fill; + uint32_t color; + int prefetch; + + /* auto init and linked channel data */ + int end_prog; + int repeat; + int auto_init; + int link_enabled; + int link_next_ch; + + /* interruption data */ + int interrupts; + int status; + int cstatus; + + /* state data */ + int active; + int enable; + int sync; + int src_sync; + int pending_request; + int waiting_end_prog; + uint16_t cpc; + int set_update; + + /* sync type */ + int fs; + int bs; + + /* compatibility */ + int omap_3_1_compatible_disable; + + qemu_irq irq; + struct omap_dma_channel_s *sibling; + + struct omap_dma_reg_set_s { + hwaddr src, dest; + int frame; + int element; + int pck_element; + int frame_delta[2]; + int elem_delta[2]; + int frames; + int elements; + int pck_elements; + } active_set; + + struct soc_dma_ch_s *dma; + + /* unused parameters */ + int write_mode; + int priority; + int interleave_disabled; + int type; + int suspend; + int buf_disable; +}; + +struct omap_dma_s { + struct soc_dma_s *dma; + MemoryRegion iomem; + + struct omap_mpu_state_s *mpu; + omap_clk clk; + qemu_irq irq[4]; + void (*intr_update)(struct omap_dma_s *s); + enum omap_dma_model model; + int omap_3_1_mapping_disabled; + + uint32_t gcr; + uint32_t ocp; + uint32_t caps[5]; + uint32_t irqen[4]; + uint32_t irqstat[4]; + + int chans; + struct omap_dma_channel_s ch[32]; + struct omap_dma_lcd_channel_s lcd_ch; +}; + +/* Interrupts */ +#define TIMEOUT_INTR (1 << 0) +#define EVENT_DROP_INTR (1 << 1) +#define HALF_FRAME_INTR (1 << 2) +#define END_FRAME_INTR (1 << 3) +#define LAST_FRAME_INTR (1 << 4) +#define END_BLOCK_INTR (1 << 5) +#define SYNC (1 << 6) +#define END_PKT_INTR (1 << 7) +#define TRANS_ERR_INTR (1 << 8) +#define MISALIGN_INTR (1 << 11) + +static inline void omap_dma_interrupts_update(struct omap_dma_s *s) +{ + s->intr_update(s); +} + +static void omap_dma_channel_load(struct omap_dma_channel_s *ch) +{ + struct omap_dma_reg_set_s *a = &ch->active_set; + int i, normal; + int omap_3_1 = !ch->omap_3_1_compatible_disable; + + /* + * TODO: verify address ranges and alignment + * TODO: port endianness + */ + + a->src = ch->addr[0]; + a->dest = ch->addr[1]; + a->frames = ch->frames; + a->elements = ch->elements; + a->pck_elements = ch->frame_index[!ch->src_sync]; + a->frame = 0; + a->element = 0; + a->pck_element = 0; + + if (unlikely(!ch->elements || !ch->frames)) { + printf("%s: bad DMA request\n", __FUNCTION__); + return; + } + + for (i = 0; i < 2; i ++) + switch (ch->mode[i]) { + case constant: + a->elem_delta[i] = 0; + a->frame_delta[i] = 0; + break; + case post_incremented: + a->elem_delta[i] = ch->data_type; + a->frame_delta[i] = 0; + break; + case single_index: + a->elem_delta[i] = ch->data_type + + ch->element_index[omap_3_1 ? 0 : i] - 1; + a->frame_delta[i] = 0; + break; + case double_index: + a->elem_delta[i] = ch->data_type + + ch->element_index[omap_3_1 ? 0 : i] - 1; + a->frame_delta[i] = ch->frame_index[omap_3_1 ? 0 : i] - + ch->element_index[omap_3_1 ? 0 : i]; + break; + default: + break; + } + + normal = !ch->transparent_copy && !ch->constant_fill && + /* FIFO is big-endian so either (ch->endian[n] == 1) OR + * (ch->endian_lock[n] == 1) mean no endianism conversion. */ + (ch->endian[0] | ch->endian_lock[0]) == + (ch->endian[1] | ch->endian_lock[1]); + for (i = 0; i < 2; i ++) { + /* TODO: for a->frame_delta[i] > 0 still use the fast path, just + * limit min_elems in omap_dma_transfer_setup to the nearest frame + * end. */ + if (!a->elem_delta[i] && normal && + (a->frames == 1 || !a->frame_delta[i])) + ch->dma->type[i] = soc_dma_access_const; + else if (a->elem_delta[i] == ch->data_type && normal && + (a->frames == 1 || !a->frame_delta[i])) + ch->dma->type[i] = soc_dma_access_linear; + else + ch->dma->type[i] = soc_dma_access_other; + + ch->dma->vaddr[i] = ch->addr[i]; + } + soc_dma_ch_update(ch->dma); +} + +static void omap_dma_activate_channel(struct omap_dma_s *s, + struct omap_dma_channel_s *ch) +{ + if (!ch->active) { + if (ch->set_update) { + /* It's not clear when the active set is supposed to be + * loaded from registers. We're already loading it when the + * channel is enabled, and for some guests this is not enough + * but that may be also because of a race condition (no + * delays in qemu) in the guest code, which we're just + * working around here. */ + omap_dma_channel_load(ch); + ch->set_update = 0; + } + + ch->active = 1; + soc_dma_set_request(ch->dma, 1); + if (ch->sync) + ch->status |= SYNC; + } +} + +static void omap_dma_deactivate_channel(struct omap_dma_s *s, + struct omap_dma_channel_s *ch) +{ + /* Update cpc */ + ch->cpc = ch->active_set.dest & 0xffff; + + if (ch->pending_request && !ch->waiting_end_prog && ch->enable) { + /* Don't deactivate the channel */ + ch->pending_request = 0; + return; + } + + /* Don't deactive the channel if it is synchronized and the DMA request is + active */ + if (ch->sync && ch->enable && (s->dma->drqbmp & (1ULL << ch->sync))) + return; + + if (ch->active) { + ch->active = 0; + ch->status &= ~SYNC; + soc_dma_set_request(ch->dma, 0); + } +} + +static void omap_dma_enable_channel(struct omap_dma_s *s, + struct omap_dma_channel_s *ch) +{ + if (!ch->enable) { + ch->enable = 1; + ch->waiting_end_prog = 0; + omap_dma_channel_load(ch); + /* TODO: theoretically if ch->sync && ch->prefetch && + * !s->dma->drqbmp[ch->sync], we should also activate and fetch + * from source and then stall until signalled. */ + if ((!ch->sync) || (s->dma->drqbmp & (1ULL << ch->sync))) { + omap_dma_activate_channel(s, ch); + } + } +} + +static void omap_dma_disable_channel(struct omap_dma_s *s, + struct omap_dma_channel_s *ch) +{ + if (ch->enable) { + ch->enable = 0; + /* Discard any pending request */ + ch->pending_request = 0; + omap_dma_deactivate_channel(s, ch); + } +} + +static void omap_dma_channel_end_prog(struct omap_dma_s *s, + struct omap_dma_channel_s *ch) +{ + if (ch->waiting_end_prog) { + ch->waiting_end_prog = 0; + if (!ch->sync || ch->pending_request) { + ch->pending_request = 0; + omap_dma_activate_channel(s, ch); + } + } +} + +static void omap_dma_interrupts_3_1_update(struct omap_dma_s *s) +{ + struct omap_dma_channel_s *ch = s->ch; + + /* First three interrupts are shared between two channels each. */ + if (ch[0].status | ch[6].status) + qemu_irq_raise(ch[0].irq); + if (ch[1].status | ch[7].status) + qemu_irq_raise(ch[1].irq); + if (ch[2].status | ch[8].status) + qemu_irq_raise(ch[2].irq); + if (ch[3].status) + qemu_irq_raise(ch[3].irq); + if (ch[4].status) + qemu_irq_raise(ch[4].irq); + if (ch[5].status) + qemu_irq_raise(ch[5].irq); +} + +static void omap_dma_interrupts_3_2_update(struct omap_dma_s *s) +{ + struct omap_dma_channel_s *ch = s->ch; + int i; + + for (i = s->chans; i; ch ++, i --) + if (ch->status) + qemu_irq_raise(ch->irq); +} + +static void omap_dma_enable_3_1_mapping(struct omap_dma_s *s) +{ + s->omap_3_1_mapping_disabled = 0; + s->chans = 9; + s->intr_update = omap_dma_interrupts_3_1_update; +} + +static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s) +{ + s->omap_3_1_mapping_disabled = 1; + s->chans = 16; + s->intr_update = omap_dma_interrupts_3_2_update; +} + +static void omap_dma_process_request(struct omap_dma_s *s, int request) +{ + int channel; + int drop_event = 0; + struct omap_dma_channel_s *ch = s->ch; + + for (channel = 0; channel < s->chans; channel ++, ch ++) { + if (ch->enable && ch->sync == request) { + if (!ch->active) + omap_dma_activate_channel(s, ch); + else if (!ch->pending_request) + ch->pending_request = 1; + else { + /* Request collision */ + /* Second request received while processing other request */ + ch->status |= EVENT_DROP_INTR; + drop_event = 1; + } + } + } + + if (drop_event) + omap_dma_interrupts_update(s); +} + +static void omap_dma_transfer_generic(struct soc_dma_ch_s *dma) +{ + uint8_t value[4]; + struct omap_dma_channel_s *ch = dma->opaque; + struct omap_dma_reg_set_s *a = &ch->active_set; + int bytes = dma->bytes; +#ifdef MULTI_REQ + uint16_t status = ch->status; +#endif + + do { + /* Transfer a single element */ + /* FIXME: check the endianness */ + if (!ch->constant_fill) + cpu_physical_memory_read(a->src, value, ch->data_type); + else + *(uint32_t *) value = ch->color; + + if (!ch->transparent_copy || *(uint32_t *) value != ch->color) + cpu_physical_memory_write(a->dest, value, ch->data_type); + + a->src += a->elem_delta[0]; + a->dest += a->elem_delta[1]; + a->element ++; + +#ifndef MULTI_REQ + if (a->element == a->elements) { + /* End of Frame */ + a->element = 0; + a->src += a->frame_delta[0]; + a->dest += a->frame_delta[1]; + a->frame ++; + + /* If the channel is async, update cpc */ + if (!ch->sync) + ch->cpc = a->dest & 0xffff; + } + } while ((bytes -= ch->data_type)); +#else + /* If the channel is element synchronized, deactivate it */ + if (ch->sync && !ch->fs && !ch->bs) + omap_dma_deactivate_channel(s, ch); + + /* If it is the last frame, set the LAST_FRAME interrupt */ + if (a->element == 1 && a->frame == a->frames - 1) + if (ch->interrupts & LAST_FRAME_INTR) + ch->status |= LAST_FRAME_INTR; + + /* If the half of the frame was reached, set the HALF_FRAME + interrupt */ + if (a->element == (a->elements >> 1)) + if (ch->interrupts & HALF_FRAME_INTR) + ch->status |= HALF_FRAME_INTR; + + if (ch->fs && ch->bs) { + a->pck_element ++; + /* Check if a full packet has beed transferred. */ + if (a->pck_element == a->pck_elements) { + a->pck_element = 0; + + /* Set the END_PKT interrupt */ + if ((ch->interrupts & END_PKT_INTR) && !ch->src_sync) + ch->status |= END_PKT_INTR; + + /* If the channel is packet-synchronized, deactivate it */ + if (ch->sync) + omap_dma_deactivate_channel(s, ch); + } + } + + if (a->element == a->elements) { + /* End of Frame */ + a->element = 0; + a->src += a->frame_delta[0]; + a->dest += a->frame_delta[1]; + a->frame ++; + + /* If the channel is frame synchronized, deactivate it */ + if (ch->sync && ch->fs && !ch->bs) + omap_dma_deactivate_channel(s, ch); + + /* If the channel is async, update cpc */ + if (!ch->sync) + ch->cpc = a->dest & 0xffff; + + /* Set the END_FRAME interrupt */ + if (ch->interrupts & END_FRAME_INTR) + ch->status |= END_FRAME_INTR; + + if (a->frame == a->frames) { + /* End of Block */ + /* Disable the channel */ + + if (ch->omap_3_1_compatible_disable) { + omap_dma_disable_channel(s, ch); + if (ch->link_enabled) + omap_dma_enable_channel(s, + &s->ch[ch->link_next_ch]); + } else { + if (!ch->auto_init) + omap_dma_disable_channel(s, ch); + else if (ch->repeat || ch->end_prog) + omap_dma_channel_load(ch); + else { + ch->waiting_end_prog = 1; + omap_dma_deactivate_channel(s, ch); + } + } + + if (ch->interrupts & END_BLOCK_INTR) + ch->status |= END_BLOCK_INTR; + } + } + } while (status == ch->status && ch->active); + + omap_dma_interrupts_update(s); +#endif +} + +enum { + omap_dma_intr_element_sync, + omap_dma_intr_last_frame, + omap_dma_intr_half_frame, + omap_dma_intr_frame, + omap_dma_intr_frame_sync, + omap_dma_intr_packet, + omap_dma_intr_packet_sync, + omap_dma_intr_block, + __omap_dma_intr_last, +}; + +static void omap_dma_transfer_setup(struct soc_dma_ch_s *dma) +{ + struct omap_dma_port_if_s *src_p, *dest_p; + struct omap_dma_reg_set_s *a; + struct omap_dma_channel_s *ch = dma->opaque; + struct omap_dma_s *s = dma->dma->opaque; + int frames, min_elems, elements[__omap_dma_intr_last]; + + a = &ch->active_set; + + src_p = &s->mpu->port[ch->port[0]]; + dest_p = &s->mpu->port[ch->port[1]]; + if ((!ch->constant_fill && !src_p->addr_valid(s->mpu, a->src)) || + (!dest_p->addr_valid(s->mpu, a->dest))) { +#if 0 + /* Bus time-out */ + if (ch->interrupts & TIMEOUT_INTR) + ch->status |= TIMEOUT_INTR; + omap_dma_deactivate_channel(s, ch); + continue; +#endif + printf("%s: Bus time-out in DMA%i operation\n", + __FUNCTION__, dma->num); + } + + min_elems = INT_MAX; + + /* Check all the conditions that terminate the transfer starting + * with those that can occur the soonest. */ +#define INTR_CHECK(cond, id, nelements) \ + if (cond) { \ + elements[id] = nelements; \ + if (elements[id] < min_elems) \ + min_elems = elements[id]; \ + } else \ + elements[id] = INT_MAX; + + /* Elements */ + INTR_CHECK( + ch->sync && !ch->fs && !ch->bs, + omap_dma_intr_element_sync, + 1) + + /* Frames */ + /* TODO: for transfers where entire frames can be read and written + * using memcpy() but a->frame_delta is non-zero, try to still do + * transfers using soc_dma but limit min_elems to a->elements - ... + * See also the TODO in omap_dma_channel_load. */ + INTR_CHECK( + (ch->interrupts & LAST_FRAME_INTR) && + ((a->frame < a->frames - 1) || !a->element), + omap_dma_intr_last_frame, + (a->frames - a->frame - 2) * a->elements + + (a->elements - a->element + 1)) + INTR_CHECK( + ch->interrupts & HALF_FRAME_INTR, + omap_dma_intr_half_frame, + (a->elements >> 1) + + (a->element >= (a->elements >> 1) ? a->elements : 0) - + a->element) + INTR_CHECK( + ch->sync && ch->fs && (ch->interrupts & END_FRAME_INTR), + omap_dma_intr_frame, + a->elements - a->element) + INTR_CHECK( + ch->sync && ch->fs && !ch->bs, + omap_dma_intr_frame_sync, + a->elements - a->element) + + /* Packets */ + INTR_CHECK( + ch->fs && ch->bs && + (ch->interrupts & END_PKT_INTR) && !ch->src_sync, + omap_dma_intr_packet, + a->pck_elements - a->pck_element) + INTR_CHECK( + ch->fs && ch->bs && ch->sync, + omap_dma_intr_packet_sync, + a->pck_elements - a->pck_element) + + /* Blocks */ + INTR_CHECK( + 1, + omap_dma_intr_block, + (a->frames - a->frame - 1) * a->elements + + (a->elements - a->element)) + + dma->bytes = min_elems * ch->data_type; + + /* Set appropriate interrupts and/or deactivate channels */ + +#ifdef MULTI_REQ + /* TODO: should all of this only be done if dma->update, and otherwise + * inside omap_dma_transfer_generic below - check what's faster. */ + if (dma->update) { +#endif + + /* If the channel is element synchronized, deactivate it */ + if (min_elems == elements[omap_dma_intr_element_sync]) + omap_dma_deactivate_channel(s, ch); + + /* If it is the last frame, set the LAST_FRAME interrupt */ + if (min_elems == elements[omap_dma_intr_last_frame]) + ch->status |= LAST_FRAME_INTR; + + /* If exactly half of the frame was reached, set the HALF_FRAME + interrupt */ + if (min_elems == elements[omap_dma_intr_half_frame]) + ch->status |= HALF_FRAME_INTR; + + /* If a full packet has been transferred, set the END_PKT interrupt */ + if (min_elems == elements[omap_dma_intr_packet]) + ch->status |= END_PKT_INTR; + + /* If the channel is packet-synchronized, deactivate it */ + if (min_elems == elements[omap_dma_intr_packet_sync]) + omap_dma_deactivate_channel(s, ch); + + /* If the channel is frame synchronized, deactivate it */ + if (min_elems == elements[omap_dma_intr_frame_sync]) + omap_dma_deactivate_channel(s, ch); + + /* Set the END_FRAME interrupt */ + if (min_elems == elements[omap_dma_intr_frame]) + ch->status |= END_FRAME_INTR; + + if (min_elems == elements[omap_dma_intr_block]) { + /* End of Block */ + /* Disable the channel */ + + if (ch->omap_3_1_compatible_disable) { + omap_dma_disable_channel(s, ch); + if (ch->link_enabled) + omap_dma_enable_channel(s, &s->ch[ch->link_next_ch]); + } else { + if (!ch->auto_init) + omap_dma_disable_channel(s, ch); + else if (ch->repeat || ch->end_prog) + omap_dma_channel_load(ch); + else { + ch->waiting_end_prog = 1; + omap_dma_deactivate_channel(s, ch); + } + } + + if (ch->interrupts & END_BLOCK_INTR) + ch->status |= END_BLOCK_INTR; + } + + /* Update packet number */ + if (ch->fs && ch->bs) { + a->pck_element += min_elems; + a->pck_element %= a->pck_elements; + } + + /* TODO: check if we really need to update anything here or perhaps we + * can skip part of this. */ +#ifndef MULTI_REQ + if (dma->update) { +#endif + a->element += min_elems; + + frames = a->element / a->elements; + a->element = a->element % a->elements; + a->frame += frames; + a->src += min_elems * a->elem_delta[0] + frames * a->frame_delta[0]; + a->dest += min_elems * a->elem_delta[1] + frames * a->frame_delta[1]; + + /* If the channel is async, update cpc */ + if (!ch->sync && frames) + ch->cpc = a->dest & 0xffff; + + /* TODO: if the destination port is IMIF or EMIFF, set the dirty + * bits on it. */ +#ifndef MULTI_REQ + } +#else + } +#endif + + omap_dma_interrupts_update(s); +} + +void omap_dma_reset(struct soc_dma_s *dma) +{ + int i; + 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->ocp = 0x00000000; + memset(&s->irqstat, 0, sizeof(s->irqstat)); + memset(&s->irqen, 0, sizeof(s->irqen)); + s->lcd_ch.src = emiff; + 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); + for (i = 0; i < s->chans; i ++) { + s->ch[i].suspend = 0; + s->ch[i].prefetch = 0; + s->ch[i].buf_disable = 0; + s->ch[i].src_sync = 0; + memset(&s->ch[i].burst, 0, sizeof(s->ch[i].burst)); + memset(&s->ch[i].port, 0, sizeof(s->ch[i].port)); + memset(&s->ch[i].mode, 0, sizeof(s->ch[i].mode)); + memset(&s->ch[i].frame_index, 0, sizeof(s->ch[i].frame_index)); + memset(&s->ch[i].element_index, 0, sizeof(s->ch[i].element_index)); + memset(&s->ch[i].endian, 0, sizeof(s->ch[i].endian)); + memset(&s->ch[i].endian_lock, 0, sizeof(s->ch[i].endian_lock)); + memset(&s->ch[i].translate, 0, sizeof(s->ch[i].translate)); + s->ch[i].write_mode = 0; + s->ch[i].data_type = 0; + s->ch[i].transparent_copy = 0; + s->ch[i].constant_fill = 0; + s->ch[i].color = 0x00000000; + s->ch[i].end_prog = 0; + 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].status = 0; + s->ch[i].cstatus = 0; + s->ch[i].active = 0; + s->ch[i].enable = 0; + s->ch[i].sync = 0; + s->ch[i].pending_request = 0; + s->ch[i].waiting_end_prog = 0; + s->ch[i].cpc = 0x0000; + s->ch[i].fs = 0; + s->ch[i].bs = 0; + s->ch[i].omap_3_1_compatible_disable = 0; + memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set)); + s->ch[i].priority = 0; + s->ch[i].interleave_disabled = 0; + s->ch[i].type = 0; + } +} + +static int omap_dma_ch_reg_read(struct omap_dma_s *s, + struct omap_dma_channel_s *ch, int reg, uint16_t *value) +{ + switch (reg) { + case 0x00: /* SYS_DMA_CSDP_CH0 */ + *value = (ch->burst[1] << 14) | + (ch->pack[1] << 13) | + (ch->port[1] << 9) | + (ch->burst[0] << 7) | + (ch->pack[0] << 6) | + (ch->port[0] << 2) | + (ch->data_type >> 1); + break; + + case 0x02: /* SYS_DMA_CCR_CH0 */ + if (s->model <= omap_dma_3_1) + *value = 0 << 10; /* FIFO_FLUSH reads as 0 */ + else + *value = ch->omap_3_1_compatible_disable << 10; + *value |= (ch->mode[1] << 14) | + (ch->mode[0] << 12) | + (ch->end_prog << 11) | + (ch->repeat << 9) | + (ch->auto_init << 8) | + (ch->enable << 7) | + (ch->priority << 6) | + (ch->fs << 5) | ch->sync; + break; + + case 0x04: /* SYS_DMA_CICR_CH0 */ + *value = ch->interrupts; + break; + + case 0x06: /* SYS_DMA_CSR_CH0 */ + *value = ch->status; + ch->status &= SYNC; + if (!ch->omap_3_1_compatible_disable && ch->sibling) { + *value |= (ch->sibling->status & 0x3f) << 6; + ch->sibling->status &= SYNC; + } + qemu_irq_lower(ch->irq); + break; + + case 0x08: /* SYS_DMA_CSSA_L_CH0 */ + *value = ch->addr[0] & 0x0000ffff; + break; + + case 0x0a: /* SYS_DMA_CSSA_U_CH0 */ + *value = ch->addr[0] >> 16; + break; + + case 0x0c: /* SYS_DMA_CDSA_L_CH0 */ + *value = ch->addr[1] & 0x0000ffff; + break; + + case 0x0e: /* SYS_DMA_CDSA_U_CH0 */ + *value = ch->addr[1] >> 16; + break; + + case 0x10: /* SYS_DMA_CEN_CH0 */ + *value = ch->elements; + break; + + case 0x12: /* SYS_DMA_CFN_CH0 */ + *value = ch->frames; + break; + + case 0x14: /* SYS_DMA_CFI_CH0 */ + *value = ch->frame_index[0]; + break; + + case 0x16: /* SYS_DMA_CEI_CH0 */ + *value = ch->element_index[0]; + break; + + case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */ + if (ch->omap_3_1_compatible_disable) + *value = ch->active_set.src & 0xffff; /* CSAC */ + else + *value = ch->cpc; + break; + + case 0x1a: /* DMA_CDAC */ + *value = ch->active_set.dest & 0xffff; /* CDAC */ + break; + + case 0x1c: /* DMA_CDEI */ + *value = ch->element_index[1]; + break; + + case 0x1e: /* DMA_CDFI */ + *value = ch->frame_index[1]; + break; + + case 0x20: /* DMA_COLOR_L */ + *value = ch->color & 0xffff; + break; + + case 0x22: /* DMA_COLOR_U */ + *value = ch->color >> 16; + break; + + case 0x24: /* DMA_CCR2 */ + *value = (ch->bs << 2) | + (ch->transparent_copy << 1) | + ch->constant_fill; + break; + + case 0x28: /* DMA_CLNK_CTRL */ + *value = (ch->link_enabled << 15) | + (ch->link_next_ch & 0xf); + break; + + case 0x2a: /* DMA_LCH_CTRL */ + *value = (ch->interleave_disabled << 15) | + ch->type; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_ch_reg_write(struct omap_dma_s *s, + struct omap_dma_channel_s *ch, int reg, uint16_t value) +{ + switch (reg) { + case 0x00: /* SYS_DMA_CSDP_CH0 */ + ch->burst[1] = (value & 0xc000) >> 14; + ch->pack[1] = (value & 0x2000) >> 13; + ch->port[1] = (enum omap_dma_port) ((value & 0x1e00) >> 9); + ch->burst[0] = (value & 0x0180) >> 7; + ch->pack[0] = (value & 0x0040) >> 6; + ch->port[0] = (enum omap_dma_port) ((value & 0x003c) >> 2); + ch->data_type = 1 << (value & 3); + if (ch->port[0] >= __omap_dma_port_last) + printf("%s: invalid DMA port %i\n", __FUNCTION__, + ch->port[0]); + if (ch->port[1] >= __omap_dma_port_last) + printf("%s: invalid DMA port %i\n", __FUNCTION__, + ch->port[1]); + if ((value & 3) == 3) + printf("%s: bad data_type for DMA channel\n", __FUNCTION__); + break; + + case 0x02: /* SYS_DMA_CCR_CH0 */ + ch->mode[1] = (omap_dma_addressing_t) ((value & 0xc000) >> 14); + ch->mode[0] = (omap_dma_addressing_t) ((value & 0x3000) >> 12); + ch->end_prog = (value & 0x0800) >> 11; + if (s->model >= omap_dma_3_2) + ch->omap_3_1_compatible_disable = (value >> 10) & 0x1; + ch->repeat = (value & 0x0200) >> 9; + ch->auto_init = (value & 0x0100) >> 8; + ch->priority = (value & 0x0040) >> 6; + ch->fs = (value & 0x0020) >> 5; + ch->sync = value & 0x001f; + + if (value & 0x0080) + omap_dma_enable_channel(s, ch); + else + omap_dma_disable_channel(s, ch); + + if (ch->end_prog) + omap_dma_channel_end_prog(s, ch); + + break; + + case 0x04: /* SYS_DMA_CICR_CH0 */ + ch->interrupts = value & 0x3f; + break; + + case 0x06: /* SYS_DMA_CSR_CH0 */ + OMAP_RO_REG((hwaddr) reg); + break; + + case 0x08: /* SYS_DMA_CSSA_L_CH0 */ + ch->addr[0] &= 0xffff0000; + ch->addr[0] |= value; + break; + + case 0x0a: /* SYS_DMA_CSSA_U_CH0 */ + ch->addr[0] &= 0x0000ffff; + ch->addr[0] |= (uint32_t) value << 16; + break; + + case 0x0c: /* SYS_DMA_CDSA_L_CH0 */ + ch->addr[1] &= 0xffff0000; + ch->addr[1] |= value; + break; + + case 0x0e: /* SYS_DMA_CDSA_U_CH0 */ + ch->addr[1] &= 0x0000ffff; + ch->addr[1] |= (uint32_t) value << 16; + break; + + case 0x10: /* SYS_DMA_CEN_CH0 */ + ch->elements = value; + break; + + case 0x12: /* SYS_DMA_CFN_CH0 */ + ch->frames = value; + break; + + case 0x14: /* SYS_DMA_CFI_CH0 */ + ch->frame_index[0] = (int16_t) value; + break; + + case 0x16: /* SYS_DMA_CEI_CH0 */ + ch->element_index[0] = (int16_t) value; + break; + + case 0x18: /* SYS_DMA_CPC_CH0 or DMA_CSAC */ + OMAP_RO_REG((hwaddr) reg); + break; + + case 0x1c: /* DMA_CDEI */ + ch->element_index[1] = (int16_t) value; + break; + + case 0x1e: /* DMA_CDFI */ + ch->frame_index[1] = (int16_t) value; + break; + + case 0x20: /* DMA_COLOR_L */ + ch->color &= 0xffff0000; + ch->color |= value; + break; + + case 0x22: /* DMA_COLOR_U */ + ch->color &= 0xffff; + ch->color |= (uint32_t)value << 16; + break; + + case 0x24: /* DMA_CCR2 */ + ch->bs = (value >> 2) & 0x1; + ch->transparent_copy = (value >> 1) & 0x1; + ch->constant_fill = value & 0x1; + break; + + case 0x28: /* DMA_CLNK_CTRL */ + ch->link_enabled = (value >> 15) & 0x1; + if (value & (1 << 14)) { /* Stop_Lnk */ + ch->link_enabled = 0; + omap_dma_disable_channel(s, ch); + } + ch->link_next_ch = value & 0x1f; + break; + + case 0x2a: /* DMA_LCH_CTRL */ + ch->interleave_disabled = (value >> 15) & 0x1; + ch->type = value & 0xf; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_3_2_lcd_write(struct omap_dma_lcd_channel_s *s, int offset, + uint16_t value) +{ + switch (offset) { + case 0xbc0: /* DMA_LCD_CSDP */ + s->brust_f2 = (value >> 14) & 0x3; + s->pack_f2 = (value >> 13) & 0x1; + s->data_type_f2 = (1 << ((value >> 11) & 0x3)); + s->brust_f1 = (value >> 7) & 0x3; + s->pack_f1 = (value >> 6) & 0x1; + s->data_type_f1 = (1 << ((value >> 0) & 0x3)); + break; + + case 0xbc2: /* DMA_LCD_CCR */ + s->mode_f2 = (value >> 14) & 0x3; + s->mode_f1 = (value >> 12) & 0x3; + s->end_prog = (value >> 11) & 0x1; + s->omap_3_1_compatible_disable = (value >> 10) & 0x1; + s->repeat = (value >> 9) & 0x1; + s->auto_init = (value >> 8) & 0x1; + s->running = (value >> 7) & 0x1; + s->priority = (value >> 6) & 0x1; + s->bs = (value >> 4) & 0x1; + break; + + case 0xbc4: /* DMA_LCD_CTRL */ + s->dst = (value >> 8) & 0x1; + s->src = ((value >> 6) & 0x3) << 1; + s->condition = 0; + /* Assume no bus errors and thus no BUS_ERROR irq bits. */ + s->interrupts = (value >> 1) & 1; + s->dual = value & 1; + break; + + case 0xbc8: /* TOP_B1_L */ + s->src_f1_top &= 0xffff0000; + s->src_f1_top |= 0x0000ffff & value; + break; + + case 0xbca: /* TOP_B1_U */ + s->src_f1_top &= 0x0000ffff; + s->src_f1_top |= (uint32_t)value << 16; + break; + + case 0xbcc: /* BOT_B1_L */ + s->src_f1_bottom &= 0xffff0000; + s->src_f1_bottom |= 0x0000ffff & value; + break; + + case 0xbce: /* BOT_B1_U */ + s->src_f1_bottom &= 0x0000ffff; + s->src_f1_bottom |= (uint32_t) value << 16; + break; + + case 0xbd0: /* TOP_B2_L */ + s->src_f2_top &= 0xffff0000; + s->src_f2_top |= 0x0000ffff & value; + break; + + case 0xbd2: /* TOP_B2_U */ + s->src_f2_top &= 0x0000ffff; + s->src_f2_top |= (uint32_t) value << 16; + break; + + case 0xbd4: /* BOT_B2_L */ + s->src_f2_bottom &= 0xffff0000; + s->src_f2_bottom |= 0x0000ffff & value; + break; + + case 0xbd6: /* BOT_B2_U */ + s->src_f2_bottom &= 0x0000ffff; + s->src_f2_bottom |= (uint32_t) value << 16; + break; + + case 0xbd8: /* DMA_LCD_SRC_EI_B1 */ + s->element_index_f1 = value; + break; + + case 0xbda: /* DMA_LCD_SRC_FI_B1_L */ + s->frame_index_f1 &= 0xffff0000; + s->frame_index_f1 |= 0x0000ffff & value; + break; + + case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */ + s->frame_index_f1 &= 0x0000ffff; + s->frame_index_f1 |= (uint32_t) value << 16; + break; + + case 0xbdc: /* DMA_LCD_SRC_EI_B2 */ + s->element_index_f2 = value; + break; + + case 0xbde: /* DMA_LCD_SRC_FI_B2_L */ + s->frame_index_f2 &= 0xffff0000; + s->frame_index_f2 |= 0x0000ffff & value; + break; + + case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */ + s->frame_index_f2 &= 0x0000ffff; + s->frame_index_f2 |= (uint32_t) value << 16; + break; + + case 0xbe0: /* DMA_LCD_SRC_EN_B1 */ + s->elements_f1 = value; + break; + + case 0xbe4: /* DMA_LCD_SRC_FN_B1 */ + s->frames_f1 = value; + break; + + case 0xbe2: /* DMA_LCD_SRC_EN_B2 */ + s->elements_f2 = value; + break; + + case 0xbe6: /* DMA_LCD_SRC_FN_B2 */ + s->frames_f2 = value; + break; + + case 0xbea: /* DMA_LCD_LCH_CTRL */ + s->lch_type = value & 0xf; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_3_2_lcd_read(struct omap_dma_lcd_channel_s *s, int offset, + uint16_t *ret) +{ + switch (offset) { + case 0xbc0: /* DMA_LCD_CSDP */ + *ret = (s->brust_f2 << 14) | + (s->pack_f2 << 13) | + ((s->data_type_f2 >> 1) << 11) | + (s->brust_f1 << 7) | + (s->pack_f1 << 6) | + ((s->data_type_f1 >> 1) << 0); + break; + + case 0xbc2: /* DMA_LCD_CCR */ + *ret = (s->mode_f2 << 14) | + (s->mode_f1 << 12) | + (s->end_prog << 11) | + (s->omap_3_1_compatible_disable << 10) | + (s->repeat << 9) | + (s->auto_init << 8) | + (s->running << 7) | + (s->priority << 6) | + (s->bs << 4); + break; + + case 0xbc4: /* DMA_LCD_CTRL */ + qemu_irq_lower(s->irq); + *ret = (s->dst << 8) | + ((s->src & 0x6) << 5) | + (s->condition << 3) | + (s->interrupts << 1) | + s->dual; + break; + + case 0xbc8: /* TOP_B1_L */ + *ret = s->src_f1_top & 0xffff; + break; + + case 0xbca: /* TOP_B1_U */ + *ret = s->src_f1_top >> 16; + break; + + case 0xbcc: /* BOT_B1_L */ + *ret = s->src_f1_bottom & 0xffff; + break; + + case 0xbce: /* BOT_B1_U */ + *ret = s->src_f1_bottom >> 16; + break; + + case 0xbd0: /* TOP_B2_L */ + *ret = s->src_f2_top & 0xffff; + break; + + case 0xbd2: /* TOP_B2_U */ + *ret = s->src_f2_top >> 16; + break; + + case 0xbd4: /* BOT_B2_L */ + *ret = s->src_f2_bottom & 0xffff; + break; + + case 0xbd6: /* BOT_B2_U */ + *ret = s->src_f2_bottom >> 16; + break; + + case 0xbd8: /* DMA_LCD_SRC_EI_B1 */ + *ret = s->element_index_f1; + break; + + case 0xbda: /* DMA_LCD_SRC_FI_B1_L */ + *ret = s->frame_index_f1 & 0xffff; + break; + + case 0xbf4: /* DMA_LCD_SRC_FI_B1_U */ + *ret = s->frame_index_f1 >> 16; + break; + + case 0xbdc: /* DMA_LCD_SRC_EI_B2 */ + *ret = s->element_index_f2; + break; + + case 0xbde: /* DMA_LCD_SRC_FI_B2_L */ + *ret = s->frame_index_f2 & 0xffff; + break; + + case 0xbf6: /* DMA_LCD_SRC_FI_B2_U */ + *ret = s->frame_index_f2 >> 16; + break; + + case 0xbe0: /* DMA_LCD_SRC_EN_B1 */ + *ret = s->elements_f1; + break; + + case 0xbe4: /* DMA_LCD_SRC_FN_B1 */ + *ret = s->frames_f1; + break; + + case 0xbe2: /* DMA_LCD_SRC_EN_B2 */ + *ret = s->elements_f2; + break; + + case 0xbe6: /* DMA_LCD_SRC_FN_B2 */ + *ret = s->frames_f2; + break; + + case 0xbea: /* DMA_LCD_LCH_CTRL */ + *ret = s->lch_type; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_3_1_lcd_write(struct omap_dma_lcd_channel_s *s, int offset, + uint16_t value) +{ + switch (offset) { + case 0x300: /* SYS_DMA_LCD_CTRL */ + s->src = (value & 0x40) ? imif : emiff; + s->condition = 0; + /* Assume no bus errors and thus no BUS_ERROR irq bits. */ + s->interrupts = (value >> 1) & 1; + s->dual = value & 1; + break; + + case 0x302: /* SYS_DMA_LCD_TOP_F1_L */ + s->src_f1_top &= 0xffff0000; + s->src_f1_top |= 0x0000ffff & value; + break; + + case 0x304: /* SYS_DMA_LCD_TOP_F1_U */ + s->src_f1_top &= 0x0000ffff; + s->src_f1_top |= (uint32_t)value << 16; + break; + + case 0x306: /* SYS_DMA_LCD_BOT_F1_L */ + s->src_f1_bottom &= 0xffff0000; + s->src_f1_bottom |= 0x0000ffff & value; + break; + + case 0x308: /* SYS_DMA_LCD_BOT_F1_U */ + s->src_f1_bottom &= 0x0000ffff; + s->src_f1_bottom |= (uint32_t)value << 16; + break; + + case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */ + s->src_f2_top &= 0xffff0000; + s->src_f2_top |= 0x0000ffff & value; + break; + + case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */ + s->src_f2_top &= 0x0000ffff; + s->src_f2_top |= (uint32_t)value << 16; + break; + + case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */ + s->src_f2_bottom &= 0xffff0000; + s->src_f2_bottom |= 0x0000ffff & value; + break; + + case 0x310: /* SYS_DMA_LCD_BOT_F2_U */ + s->src_f2_bottom &= 0x0000ffff; + s->src_f2_bottom |= (uint32_t)value << 16; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_3_1_lcd_read(struct omap_dma_lcd_channel_s *s, int offset, + uint16_t *ret) +{ + int i; + + switch (offset) { + case 0x300: /* SYS_DMA_LCD_CTRL */ + i = s->condition; + s->condition = 0; + qemu_irq_lower(s->irq); + *ret = ((s->src == imif) << 6) | (i << 3) | + (s->interrupts << 1) | s->dual; + break; + + case 0x302: /* SYS_DMA_LCD_TOP_F1_L */ + *ret = s->src_f1_top & 0xffff; + break; + + case 0x304: /* SYS_DMA_LCD_TOP_F1_U */ + *ret = s->src_f1_top >> 16; + break; + + case 0x306: /* SYS_DMA_LCD_BOT_F1_L */ + *ret = s->src_f1_bottom & 0xffff; + break; + + case 0x308: /* SYS_DMA_LCD_BOT_F1_U */ + *ret = s->src_f1_bottom >> 16; + break; + + case 0x30a: /* SYS_DMA_LCD_TOP_F2_L */ + *ret = s->src_f2_top & 0xffff; + break; + + case 0x30c: /* SYS_DMA_LCD_TOP_F2_U */ + *ret = s->src_f2_top >> 16; + break; + + case 0x30e: /* SYS_DMA_LCD_BOT_F2_L */ + *ret = s->src_f2_bottom & 0xffff; + break; + + case 0x310: /* SYS_DMA_LCD_BOT_F2_U */ + *ret = s->src_f2_bottom >> 16; + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_sys_write(struct omap_dma_s *s, int offset, uint16_t value) +{ + switch (offset) { + case 0x400: /* SYS_DMA_GCR */ + s->gcr = value; + break; + + case 0x404: /* DMA_GSCR */ + if (value & 0x8) + omap_dma_disable_3_1_mapping(s); + else + omap_dma_enable_3_1_mapping(s); + break; + + case 0x408: /* DMA_GRST */ + if (value & 0x1) + omap_dma_reset(s->dma); + break; + + default: + return 1; + } + return 0; +} + +static int omap_dma_sys_read(struct omap_dma_s *s, int offset, + uint16_t *ret) +{ + switch (offset) { + case 0x400: /* SYS_DMA_GCR */ + *ret = s->gcr; + break; + + case 0x404: /* DMA_GSCR */ + *ret = s->omap_3_1_mapping_disabled << 3; + break; + + case 0x408: /* DMA_GRST */ + *ret = 0; + break; + + case 0x442: /* DMA_HW_ID */ + case 0x444: /* DMA_PCh2_ID */ + case 0x446: /* DMA_PCh0_ID */ + case 0x448: /* DMA_PCh1_ID */ + case 0x44a: /* DMA_PChG_ID */ + case 0x44c: /* DMA_PChD_ID */ + *ret = 1; + break; + + case 0x44e: /* DMA_CAPS_0_U */ + *ret = (s->caps[0] >> 16) & 0xffff; + break; + case 0x450: /* DMA_CAPS_0_L */ + *ret = (s->caps[0] >> 0) & 0xffff; + break; + + case 0x452: /* DMA_CAPS_1_U */ + *ret = (s->caps[1] >> 16) & 0xffff; + break; + case 0x454: /* DMA_CAPS_1_L */ + *ret = (s->caps[1] >> 0) & 0xffff; + break; + + case 0x456: /* DMA_CAPS_2 */ + *ret = s->caps[2]; + break; + + case 0x458: /* DMA_CAPS_3 */ + *ret = s->caps[3]; + break; + + case 0x45a: /* DMA_CAPS_4 */ + *ret = s->caps[4]; + break; + + case 0x460: /* DMA_PCh2_SR */ + case 0x480: /* DMA_PCh0_SR */ + case 0x482: /* DMA_PCh1_SR */ + case 0x4c0: /* DMA_PChD_SR_0 */ + printf("%s: Physical Channel Status Registers not implemented.\n", + __FUNCTION__); + *ret = 0xff; + break; + + default: + return 1; + } + return 0; +} + +static uint64_t omap_dma_read(void *opaque, hwaddr addr, + unsigned size) +{ + struct omap_dma_s *s = (struct omap_dma_s *) opaque; + int reg, ch; + uint16_t ret; + + if (size != 2) { + return omap_badwidth_read16(opaque, addr); + } + + switch (addr) { + case 0x300 ... 0x3fe: + if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) { + if (omap_dma_3_1_lcd_read(&s->lcd_ch, addr, &ret)) + break; + return ret; + } + /* Fall through. */ + case 0x000 ... 0x2fe: + reg = addr & 0x3f; + ch = (addr >> 6) & 0x0f; + if (omap_dma_ch_reg_read(s, &s->ch[ch], reg, &ret)) + break; + return ret; + + case 0x404 ... 0x4fe: + if (s->model <= omap_dma_3_1) + break; + /* Fall through. */ + case 0x400: + if (omap_dma_sys_read(s, addr, &ret)) + break; + return ret; + + case 0xb00 ... 0xbfe: + if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) { + if (omap_dma_3_2_lcd_read(&s->lcd_ch, addr, &ret)) + break; + return ret; + } + break; + } + + OMAP_BAD_REG(addr); + return 0; +} + +static void omap_dma_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + struct omap_dma_s *s = (struct omap_dma_s *) opaque; + int reg, ch; + + if (size != 2) { + omap_badwidth_write16(opaque, addr, value); + return; + } + + switch (addr) { + case 0x300 ... 0x3fe: + if (s->model <= omap_dma_3_1 || !s->omap_3_1_mapping_disabled) { + if (omap_dma_3_1_lcd_write(&s->lcd_ch, addr, value)) + break; + return; + } + /* Fall through. */ + case 0x000 ... 0x2fe: + reg = addr & 0x3f; + ch = (addr >> 6) & 0x0f; + if (omap_dma_ch_reg_write(s, &s->ch[ch], reg, value)) + break; + return; + + case 0x404 ... 0x4fe: + if (s->model <= omap_dma_3_1) + break; + case 0x400: + /* Fall through. */ + if (omap_dma_sys_write(s, addr, value)) + break; + return; + + case 0xb00 ... 0xbfe: + if (s->model == omap_dma_3_2 && s->omap_3_1_mapping_disabled) { + if (omap_dma_3_2_lcd_write(&s->lcd_ch, addr, value)) + break; + return; + } + break; + } + + OMAP_BAD_REG(addr); +} + +static const MemoryRegionOps omap_dma_ops = { + .read = omap_dma_read, + .write = omap_dma_write, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void omap_dma_request(void *opaque, int drq, int req) +{ + struct omap_dma_s *s = (struct omap_dma_s *) opaque; + /* The request pins are level triggered in QEMU. */ + if (req) { + if (~s->dma->drqbmp & (1ULL << drq)) { + s->dma->drqbmp |= 1ULL << drq; + omap_dma_process_request(s, drq); + } + } else + s->dma->drqbmp &= ~(1ULL << drq); +} + +/* XXX: this won't be needed once soc_dma knows about clocks. */ +static void omap_dma_clk_update(void *opaque, int line, int on) +{ + struct omap_dma_s *s = (struct omap_dma_s *) opaque; + int i; + + s->dma->freq = omap_clk_getrate(s->clk); + + for (i = 0; i < s->chans; i ++) + if (s->ch[i].active) + soc_dma_set_request(s->ch[i].dma, on); +} + +static void omap_dma_setcaps(struct omap_dma_s *s) +{ + switch (s->model) { + default: + 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 */ + (1 << 18); /* Transparent BLT Capability */ + s->caps[1] = + (1 << 1); /* 1-bit palettized capability (DMA 3.2 only) */ + s->caps[2] = + (1 << 8) | /* SEPARATE_SRC_AND_DST_INDEX_CPBLTY */ + (1 << 7) | /* DST_DOUBLE_INDEX_ADRS_CPBLTY */ + (1 << 6) | /* DST_SINGLE_INDEX_ADRS_CPBLTY */ + (1 << 5) | /* DST_POST_INCRMNT_ADRS_CPBLTY */ + (1 << 4) | /* DST_CONST_ADRS_CPBLTY */ + (1 << 3) | /* SRC_DOUBLE_INDEX_ADRS_CPBLTY */ + (1 << 2) | /* SRC_SINGLE_INDEX_ADRS_CPBLTY */ + (1 << 1) | /* SRC_POST_INCRMNT_ADRS_CPBLTY */ + (1 << 0); /* SRC_CONST_ADRS_CPBLTY */ + s->caps[3] = + (1 << 6) | /* BLOCK_SYNCHR_CPBLTY (DMA 4 only) */ + (1 << 7) | /* PKT_SYNCHR_CPBLTY (DMA 4 only) */ + (1 << 5) | /* CHANNEL_CHAINING_CPBLTY */ + (1 << 4) | /* LCh_INTERLEAVE_CPBLTY */ + (1 << 3) | /* AUTOINIT_REPEAT_CPBLTY (DMA 3.2 only) */ + (1 << 2) | /* AUTOINIT_ENDPROG_CPBLTY (DMA 3.2 only) */ + (1 << 1) | /* FRAME_SYNCHR_CPBLTY */ + (1 << 0); /* ELMNT_SYNCHR_CPBLTY */ + s->caps[4] = + (1 << 7) | /* PKT_INTERRUPT_CPBLTY (DMA 4 only) */ + (1 << 6) | /* SYNC_STATUS_CPBLTY */ + (1 << 5) | /* BLOCK_INTERRUPT_CPBLTY */ + (1 << 4) | /* LAST_FRAME_INTERRUPT_CPBLTY */ + (1 << 3) | /* FRAME_INTERRUPT_CPBLTY */ + (1 << 2) | /* HALF_FRAME_INTERRUPT_CPBLTY */ + (1 << 1) | /* EVENT_DROP_INTERRUPT_CPBLTY */ + (1 << 0); /* TIMEOUT_INTERRUPT_CPBLTY (DMA 3.2 only) */ + break; + } +} + +struct soc_dma_s *omap_dma_init(hwaddr base, qemu_irq *irqs, + MemoryRegion *sysmem, + qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk, + enum omap_dma_model model) +{ + int num_irqs, memsize, i; + struct omap_dma_s *s = (struct omap_dma_s *) + g_malloc0(sizeof(struct omap_dma_s)); + + if (model <= omap_dma_3_1) { + num_irqs = 6; + memsize = 0x800; + } else { + num_irqs = 16; + memsize = 0xc00; + } + s->model = model; + s->mpu = mpu; + s->clk = clk; + s->lcd_ch.irq = lcd_irq; + s->lcd_ch.mpu = mpu; + + s->dma = soc_dma_init((model <= omap_dma_3_1) ? 9 : 16); + s->dma->freq = omap_clk_getrate(clk); + 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, 32); + s->dma->opaque = s; + + while (num_irqs --) + s->ch[num_irqs].irq = irqs[num_irqs]; + for (i = 0; i < 3; i ++) { + s->ch[i].sibling = &s->ch[i + 6]; + s->ch[i + 6].sibling = &s->ch[i]; + } + for (i = (model <= omap_dma_3_1) ? 8 : 15; i >= 0; i --) { + s->ch[i].dma = &s->dma->ch[i]; + s->dma->ch[i].opaque = &s->ch[i]; + } + + 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, 1); + + memory_region_init_io(&s->iomem, NULL, &omap_dma_ops, s, "omap.dma", memsize); + memory_region_add_subregion(sysmem, base, &s->iomem); + + mpu->drq = s->dma->drq; + + 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 = (struct omap_dma_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 = (struct omap_dma_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 */ + fprintf(stderr, "%s: invalid DMA power mode\n", __FUNCTION__); + return; + + case 0x78: /* DMA4_GCR */ + s->gcr = value & 0x00ff00ff; + if ((value & 0xff) == 0x00) /* MAX_CHANNEL_FIFO_DEPTH */ + fprintf(stderr, "%s: wrong FIFO depth in GCR\n", __FUNCTION__); + 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) + fprintf(stderr, "%s: Buffering disable is not allowed in " + "destination synchronised mode\n", __FUNCTION__); + 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]) + fprintf(stderr, "%s: For a packet transfer at least one port " + "must be constant-addressed\n", __FUNCTION__); + 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]) + fprintf(stderr, "%s: DMA endiannes conversion enable attempt\n", + __FUNCTION__); + 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]) + fprintf(stderr, "%s: bad MReqAddressTranslate sideband signal\n", + __FUNCTION__); + ch->data_type = 1 << (value & 3); + if ((value & 3) == 3) + printf("%s: bad data_type for DMA channel\n", __FUNCTION__); + 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 = (struct omap_dma_s *) + g_malloc0(sizeof(struct omap_dma_s)); + + 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; + + return &s->lcd_ch; +} |