/*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include "qemu-common.h"
#include "qemu-timer.h"
#include "omap.h"
#include "irq.h"
struct omap_dma_channel_s {
/* transfer data */
int burst[2];
int pack[2];
enum omap_dma_port port[2];
target_phys_addr_t addr[2];
omap_dma_addressing_t mode[2];
uint16_t elements;
uint16_t frames;
int16_t frame_index[2];
int16_t element_index[2];
int data_type;
/* transfer type */
int transparent_copy;
int constant_fill;
uint32_t color;
/* 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;
/* state data */
int active;
int enable;
int sync;
int pending_request;
int waiting_end_prog;
uint16_t cpc;
/* 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 {
target_phys_addr_t src, dest;
int frame;
int element;
int frame_delta[2];
int elem_delta[2];
int frames;
int elements;
} active_set;
/* unused parameters */
int priority;
int interleave_disabled;
int type;
};
struct omap_dma_s {
QEMUTimer *tm;
struct omap_mpu_state_s *mpu;
target_phys_addr_t base;
omap_clk clk;
int64_t delay;
uint32_t drq;
enum omap_dma_model model;
int omap_3_1_mapping_disabled;
uint16_t gcr;
int run_count;
int chans;
struct omap_dma_channel_s ch[16];
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)
static void omap_dma_interrupts_update(struct omap_dma_s *s)
{
struct omap_dma_channel_s *ch = s->ch;
int i;
if (s->omap_3_1_mapping_disabled) {
for (i = 0; i < s->chans; i ++, ch ++)
if (ch->status)
qemu_irq_raise(ch->irq);
} else {
/* First three interrupts are shared between two channels each. */
for (i = 0; i < 6; i ++, ch ++) {
if (ch->status || (ch->sibling && ch->sibling->status))
qemu_irq_raise(ch->irq);
}
}
}
static void omap_dma_channel_load(struct omap_dma_s *s,
struct omap_dma_channel_s *ch)
{
struct omap_dma_reg_set_s *a = &ch->active_set;
int i;
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->frame = 0;
a->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;
}
}
static void omap_dma_activate_channel(struct omap_dma_s *s,
struct omap_dma_channel_s *ch)
{
if (!ch->active) {
ch->active = 1;
if (ch->sync)
ch->status |= SYNC;
s->run_count ++;
}
if (s->delay && !qemu_timer_pending(s->tm))
qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
}
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) {
/* Don't deactivate the channel */
ch->pending_request = 0;
if (ch->enable)
return;
}
/* Don't deactive the channel if it is synchronized and the DMA request is
active */
if (ch->sync && (s->drq & (1 << ch->sync)) && ch->enable)
return;
if (ch->active) {
ch->active = 0;
ch->status &= ~SYNC;
s->run_count --;
}
if (!s->run_count)
qemu_del_timer(s->tm);
}
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(s, ch);
if ((!ch->sync) || (s->drq & (1 << 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_enable_3_1_mapping(struct omap_dma_s *s)
{
s->omap_3_1_mapping_disabled = 0;
s->chans = 9;
}
static void omap_dma_disable_3_1_mapping(struct omap_dma_s *s)
{
s->omap_3_1_mapping_disabled = 1;
s->chans = 16;
}
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_channel_run(struct omap_dma_s *s)
{
int n = s->chans;
uint16_t status;
uint8_t value[4];
struct omap_dma_port_if_s *src_p, *dest_p;
struct omap_dma_reg_set_s *a;
struct omap_dma_channel_s *ch;
for (ch = s->ch; n; n --, ch ++) {
if (!ch->active)
continue;
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__, s->chans - n);
}
status = ch->status;
while (status == ch->status && ch->active) {
/* 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 ++;
/* 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 (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)
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(s, ch);
else {
ch->waiting_end_prog = 1;
omap_dma_deactivate_channel(s, ch);
}
}
if (ch->interrupts & END_BLOCK_INTR)
ch->status |= END_BLOCK_INTR;
}
}
}
}
omap_dma_interrupts_update(s);
if (s->run_count && s->delay)
qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
}
void omap_dma_reset(struct omap_dma_s *s)
{
int i;
qemu_del_timer(s->tm);
s->gcr = 0x0004;
s->drq = 0x00000000;
s->run_count = 0;
s->lcd_ch.src = emiff;
s->lcd_ch.condition = 0;
s->lcd_ch.interrupts = 0;
s->lcd_ch.dual = 0;
omap_dma_enable_3_1_mapping(s);
for (i = 0; i < s->chans; i ++) {
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].elements, 0, sizeof(s->ch[i].elements));
memset(&s->ch[i].frames, 0, sizeof(s->ch[i].frames));
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].data_type, 0, sizeof(s->ch[i].data_type));
memset(&s->ch[i].transparent_copy, 0,
sizeof(s->ch[i].transparent_copy));
memset(&s->ch[i].constant_fill, 0, sizeof(s->ch[i].constant_fill));
memset(&s->ch[i].color, 0, sizeof(s->ch[i].color));
memset(&s->ch[i].end_prog, 0, sizeof(s->ch[i].end_prog));
memset(&s->ch[i].repeat, 0, sizeof(s->ch[i].repeat));
memset(&s->ch[i].auto_init, 0, sizeof(s->ch[i].auto_init));
memset(&s->ch[i].link_enabled, 0, sizeof(s->ch[i].link_enabled));
memset(&s->ch[i].link_next_ch, 0, sizeof(s->ch[i].link_next_ch));
s->ch[i].interrupts = 0x0003;
memset(&s->ch[i].status, 0, sizeof(s->ch[i].status));
memset(&s->ch[i].active, 0, sizeof(s->ch[i].active));
memset(&s->ch[i].enable, 0, sizeof(s->ch[i].enable));
memset(&s->ch[i].sync, 0, sizeof(s->ch[i].sync));
memset(&s->ch[i].pending_request, 0, sizeof(s->ch[i].pending_request));
memset(&s->ch[i].waiting_end_prog, 0,
sizeof(s->ch[i].waiting_end_prog));
memset(&s->ch[i].cpc, 0, sizeof(s->ch[i].cpc));
memset(&s->ch[i].fs, 0, sizeof(s->ch[i].fs));
memset(&s->ch[i].bs, 0, sizeof(s->ch[i].bs));
memset(&s->ch[i].omap_3_1_compatible_disable, 0,
sizeof(s->ch[i].omap_3_1_compatible_disable));
memset(&s->ch[i].active_set, 0, sizeof(s->ch[i].active_set));
memset(&s->ch[i].priority, 0, sizeof(s->ch[i].priority));
memset(&s->ch[i].interleave_disabled, 0,
sizeof(s->ch[i].interleave_disabled));
memset(&s->ch[i].type, 0, sizeof(s->ch[i].type));
}
}
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_1)
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;
break;
case 0x06: /* SYS_DMA_CSR_CH0 */
OMAP_RO_REG((target_phys_addr_t) 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((target_phys_addr_t) 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 |= 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 |= 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 |= 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 |= 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 |= 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 |= 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);
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 = (1 << 3) | /* Constant Fill Capacity */
(1 << 2); /* Transparent BLT Capacity */
break;
case 0x450: /* DMA_CAPS_0_L */
case 0x452: /* DMA_CAPS_1_U */
*ret = 0;
break;
case 0x454: /* DMA_CAPS_1_L */
*ret = (1 << 1); /* 1-bit palletized capability */
break;
case 0x456: /* DMA_CAPS_2 */
*ret = (1 << 8) | /* SSDIC */
(1 << 7) | /* DDIAC */
(1 << 6) | /* DSIAC */
(1 << 5) | /* DPIAC */
(1 << 4) | /* DCAC */
(1 << 3) | /* SDIAC */
(1 << 2) | /* SSIAC */
(1 << 1) | /* SPIAC */
1; /* SCAC */
break;
case 0x458: /* DMA_CAPS_3 */
*ret = (1 << 5) | /* CCC */
(1 << 4) | /* IC */
(1 << 3) | /* ARC */
(1 << 2) | /* AEC */
(1 << 1) | /* FSC */
1; /* ESC */
break;
case 0x45a: /* DMA_CAPS_4 */
*ret = (1 << 6) | /* SSC */
(1 << 5) | /* BIC */
(1 << 4) | /* LFIC */
(1 << 3) | /* FIC */
(1 << 2) | /* HFIC */
(1 << 1) | /* EDIC */
1; /* TOIC */
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 uint32_t omap_dma_read(void *opaque, target_phys_addr_t addr)
{
struct omap_dma_s *s = (struct omap_dma_s *) opaque;
int reg, ch, offset = addr - s->base;
uint16_t ret;
switch (offset) {
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, offset, &ret))
break;
return ret;
}
/* Fall through. */
case 0x000 ... 0x2fe:
reg = offset & 0x3f;
ch = (offset >> 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, offset, &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, offset, &ret))
break;
return ret;
}
break;
}
OMAP_BAD_REG(addr);
return 0;
}
static void omap_dma_write(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
struct omap_dma_s *s = (struct omap_dma_s *) opaque;
int reg, ch, offset = addr - s->base;
switch (offset) {
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, offset, value))
break;
return;
}
/* Fall through. */
case 0x000 ... 0x2fe:
reg = offset & 0x3f;
ch = (offset >> 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, offset, 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, offset, value))
break;
return;
}
break;
}
OMAP_BAD_REG(addr);
}
static CPUReadMemoryFunc *omap_dma_readfn[] = {
omap_badwidth_read16,
omap_dma_read,
omap_badwidth_read16,
};
static CPUWriteMemoryFunc *omap_dma_writefn[] = {
omap_badwidth_write16,
omap_dma_write,
omap_badwidth_write16,
};
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. */
if (req) {
if (~s->drq & (1 << drq)) {
s->drq |= 1 << drq;
omap_dma_process_request(s, drq);
}
} else
s->drq &= ~(1 << drq);
}
static void omap_dma_clk_update(void *opaque, int line, int on)
{
struct omap_dma_s *s = (struct omap_dma_s *) opaque;
if (on) {
/* TODO: make a clever calculation */
s->delay = ticks_per_sec >> 8;
if (s->run_count)
qemu_mod_timer(s->tm, qemu_get_clock(vm_clock) + s->delay);
} else {
s->delay = 0;
qemu_del_timer(s->tm);
}
}
struct omap_dma_s *omap_dma_init(target_phys_addr_t base, qemu_irq *irqs,
qemu_irq lcd_irq, struct omap_mpu_state_s *mpu, omap_clk clk,
enum omap_dma_model model)
{
int iomemtype, num_irqs, memsize, i;
struct omap_dma_s *s = (struct omap_dma_s *)
qemu_mallocz(sizeof(struct omap_dma_s));
if (model == omap_dma_3_1) {
num_irqs = 6;
memsize = 0x800;
} else {
num_irqs = 16;
memsize = 0xc00;
}
s->base = base;
s->model = model;
s->mpu = mpu;
s->clk = clk;
s->lcd_ch.irq = lcd_irq;
s->lcd_ch.mpu = mpu;
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];
}
s->tm = qemu_new_timer(vm_clock, (QEMUTimerCB *) omap_dma_channel_run, s);
omap_clk_adduser(s->clk, qemu_allocate_irqs(omap_dma_clk_update, s, 1)[0]);
mpu->drq = qemu_allocate_irqs(omap_dma_request, s, 32);
omap_dma_reset(s);
omap_dma_clk_update(s, 0, 1);
iomemtype = cpu_register_io_memory(0, omap_dma_readfn,
omap_dma_writefn, s);
cpu_register_physical_memory(s->base, memsize, iomemtype);
return s;
}
struct omap_dma_lcd_channel_s *omap_dma_get_lcdch(struct omap_dma_s *s)
{
return &s->lcd_ch;
}