diff options
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/Makefile.objs | 6 | ||||
| -rw-r--r-- | hw/dma/etraxfs_dma.c | 781 | ||||
| -rw-r--r-- | hw/dma/omap_dma.c | 2101 | ||||
| -rw-r--r-- | hw/dma/pxa2xx_dma.c | 574 | ||||
| -rw-r--r-- | hw/dma/soc_dma.c | 366 | ||||
| -rw-r--r-- | hw/dma/sparc32_dma.c | 315 | ||||
| -rw-r--r-- | hw/dma/sun4m_iommu.c | 387 |
7 files changed, 4530 insertions, 0 deletions
diff --git a/hw/dma/Makefile.objs b/hw/dma/Makefile.objs index bce31cdf87..0e65ed0d74 100644 --- a/hw/dma/Makefile.objs +++ b/hw/dma/Makefile.objs @@ -5,3 +5,9 @@ common-obj-$(CONFIG_PL330) += pl330.o common-obj-$(CONFIG_I82374) += i82374.o common-obj-$(CONFIG_I8257) += i8257.o common-obj-$(CONFIG_XILINX_AXI) += xilinx_axidma.o +common-obj-$(CONFIG_ETRAXFS) += etraxfs_dma.o +common-obj-$(CONFIG_STP2000) += sparc32_dma.o +common-obj-$(CONFIG_SUN4M) += sun4m_iommu.o + +obj-$(CONFIG_OMAP) += omap_dma.o soc_dma.o +obj-$(CONFIG_PXA2XX) += pxa2xx_dma.o diff --git a/hw/dma/etraxfs_dma.c b/hw/dma/etraxfs_dma.c new file mode 100644 index 0000000000..6a8c222502 --- /dev/null +++ b/hw/dma/etraxfs_dma.c @@ -0,0 +1,781 @@ +/* + * QEMU ETRAX DMA Controller. + * + * Copyright (c) 2008 Edgar E. Iglesias, Axis Communications AB. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include <stdio.h> +#include <sys/time.h> +#include "hw/hw.h" +#include "exec/address-spaces.h" +#include "qemu-common.h" +#include "sysemu/sysemu.h" + +#include "hw/cris/etraxfs_dma.h" + +#define D(x) + +#define RW_DATA (0x0 / 4) +#define RW_SAVED_DATA (0x58 / 4) +#define RW_SAVED_DATA_BUF (0x5c / 4) +#define RW_GROUP (0x60 / 4) +#define RW_GROUP_DOWN (0x7c / 4) +#define RW_CMD (0x80 / 4) +#define RW_CFG (0x84 / 4) +#define RW_STAT (0x88 / 4) +#define RW_INTR_MASK (0x8c / 4) +#define RW_ACK_INTR (0x90 / 4) +#define R_INTR (0x94 / 4) +#define R_MASKED_INTR (0x98 / 4) +#define RW_STREAM_CMD (0x9c / 4) + +#define DMA_REG_MAX (0x100 / 4) + +/* descriptors */ + +// ------------------------------------------------------------ dma_descr_group +typedef struct dma_descr_group { + uint32_t next; + unsigned eol : 1; + unsigned tol : 1; + unsigned bol : 1; + unsigned : 1; + unsigned intr : 1; + unsigned : 2; + unsigned en : 1; + unsigned : 7; + unsigned dis : 1; + unsigned md : 16; + struct dma_descr_group *up; + union { + struct dma_descr_context *context; + struct dma_descr_group *group; + } down; +} dma_descr_group; + +// ---------------------------------------------------------- dma_descr_context +typedef struct dma_descr_context { + uint32_t next; + unsigned eol : 1; + unsigned : 3; + unsigned intr : 1; + unsigned : 1; + unsigned store_mode : 1; + unsigned en : 1; + unsigned : 7; + unsigned dis : 1; + unsigned md0 : 16; + unsigned md1; + unsigned md2; + unsigned md3; + unsigned md4; + uint32_t saved_data; + uint32_t saved_data_buf; +} dma_descr_context; + +// ------------------------------------------------------------- dma_descr_data +typedef struct dma_descr_data { + uint32_t next; + uint32_t buf; + unsigned eol : 1; + unsigned : 2; + unsigned out_eop : 1; + unsigned intr : 1; + unsigned wait : 1; + unsigned : 2; + unsigned : 3; + unsigned in_eop : 1; + unsigned : 4; + unsigned md : 16; + uint32_t after; +} dma_descr_data; + +/* Constants */ +enum { + regk_dma_ack_pkt = 0x00000100, + regk_dma_anytime = 0x00000001, + regk_dma_array = 0x00000008, + regk_dma_burst = 0x00000020, + regk_dma_client = 0x00000002, + regk_dma_copy_next = 0x00000010, + regk_dma_copy_up = 0x00000020, + regk_dma_data_at_eol = 0x00000001, + regk_dma_dis_c = 0x00000010, + regk_dma_dis_g = 0x00000020, + regk_dma_idle = 0x00000001, + regk_dma_intern = 0x00000004, + regk_dma_load_c = 0x00000200, + regk_dma_load_c_n = 0x00000280, + regk_dma_load_c_next = 0x00000240, + regk_dma_load_d = 0x00000140, + regk_dma_load_g = 0x00000300, + regk_dma_load_g_down = 0x000003c0, + regk_dma_load_g_next = 0x00000340, + regk_dma_load_g_up = 0x00000380, + regk_dma_next_en = 0x00000010, + regk_dma_next_pkt = 0x00000010, + regk_dma_no = 0x00000000, + regk_dma_only_at_wait = 0x00000000, + regk_dma_restore = 0x00000020, + regk_dma_rst = 0x00000001, + regk_dma_running = 0x00000004, + regk_dma_rw_cfg_default = 0x00000000, + regk_dma_rw_cmd_default = 0x00000000, + regk_dma_rw_intr_mask_default = 0x00000000, + regk_dma_rw_stat_default = 0x00000101, + regk_dma_rw_stream_cmd_default = 0x00000000, + regk_dma_save_down = 0x00000020, + regk_dma_save_up = 0x00000020, + regk_dma_set_reg = 0x00000050, + regk_dma_set_w_size1 = 0x00000190, + regk_dma_set_w_size2 = 0x000001a0, + regk_dma_set_w_size4 = 0x000001c0, + regk_dma_stopped = 0x00000002, + regk_dma_store_c = 0x00000002, + regk_dma_store_descr = 0x00000000, + regk_dma_store_g = 0x00000004, + regk_dma_store_md = 0x00000001, + regk_dma_sw = 0x00000008, + regk_dma_update_down = 0x00000020, + regk_dma_yes = 0x00000001 +}; + +enum dma_ch_state +{ + RST = 1, + STOPPED = 2, + RUNNING = 4 +}; + +struct fs_dma_channel +{ + qemu_irq irq; + struct etraxfs_dma_client *client; + + /* Internal status. */ + int stream_cmd_src; + enum dma_ch_state state; + + unsigned int input : 1; + unsigned int eol : 1; + + struct dma_descr_group current_g; + struct dma_descr_context current_c; + struct dma_descr_data current_d; + + /* Control registers. */ + uint32_t regs[DMA_REG_MAX]; +}; + +struct fs_dma_ctrl +{ + MemoryRegion mmio; + int nr_channels; + struct fs_dma_channel *channels; + + QEMUBH *bh; +}; + +static void DMA_run(void *opaque); +static int channel_out_run(struct fs_dma_ctrl *ctrl, int c); + +static inline uint32_t channel_reg(struct fs_dma_ctrl *ctrl, int c, int reg) +{ + return ctrl->channels[c].regs[reg]; +} + +static inline int channel_stopped(struct fs_dma_ctrl *ctrl, int c) +{ + return channel_reg(ctrl, c, RW_CFG) & 2; +} + +static inline int channel_en(struct fs_dma_ctrl *ctrl, int c) +{ + return (channel_reg(ctrl, c, RW_CFG) & 1) + && ctrl->channels[c].client; +} + +static inline int fs_channel(hwaddr addr) +{ + /* Every channel has a 0x2000 ctrl register map. */ + return addr >> 13; +} + +#ifdef USE_THIS_DEAD_CODE +static void channel_load_g(struct fs_dma_ctrl *ctrl, int c) +{ + hwaddr addr = channel_reg(ctrl, c, RW_GROUP); + + /* Load and decode. FIXME: handle endianness. */ + cpu_physical_memory_read (addr, + (void *) &ctrl->channels[c].current_g, + sizeof ctrl->channels[c].current_g); +} + +static void dump_c(int ch, struct dma_descr_context *c) +{ + printf("%s ch=%d\n", __func__, ch); + printf("next=%x\n", c->next); + printf("saved_data=%x\n", c->saved_data); + printf("saved_data_buf=%x\n", c->saved_data_buf); + printf("eol=%x\n", (uint32_t) c->eol); +} + +static void dump_d(int ch, struct dma_descr_data *d) +{ + printf("%s ch=%d\n", __func__, ch); + printf("next=%x\n", d->next); + printf("buf=%x\n", d->buf); + printf("after=%x\n", d->after); + printf("intr=%x\n", (uint32_t) d->intr); + printf("out_eop=%x\n", (uint32_t) d->out_eop); + printf("in_eop=%x\n", (uint32_t) d->in_eop); + printf("eol=%x\n", (uint32_t) d->eol); +} +#endif + +static void channel_load_c(struct fs_dma_ctrl *ctrl, int c) +{ + hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN); + + /* Load and decode. FIXME: handle endianness. */ + cpu_physical_memory_read (addr, + (void *) &ctrl->channels[c].current_c, + sizeof ctrl->channels[c].current_c); + + D(dump_c(c, &ctrl->channels[c].current_c)); + /* I guess this should update the current pos. */ + ctrl->channels[c].regs[RW_SAVED_DATA] = + (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data; + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = + (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data_buf; +} + +static void channel_load_d(struct fs_dma_ctrl *ctrl, int c) +{ + hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA); + + /* Load and decode. FIXME: handle endianness. */ + D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr)); + cpu_physical_memory_read (addr, + (void *) &ctrl->channels[c].current_d, + sizeof ctrl->channels[c].current_d); + + D(dump_d(c, &ctrl->channels[c].current_d)); + ctrl->channels[c].regs[RW_DATA] = addr; +} + +static void channel_store_c(struct fs_dma_ctrl *ctrl, int c) +{ + hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN); + + /* Encode and store. FIXME: handle endianness. */ + D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr)); + D(dump_d(c, &ctrl->channels[c].current_d)); + cpu_physical_memory_write (addr, + (void *) &ctrl->channels[c].current_c, + sizeof ctrl->channels[c].current_c); +} + +static void channel_store_d(struct fs_dma_ctrl *ctrl, int c) +{ + hwaddr addr = channel_reg(ctrl, c, RW_SAVED_DATA); + + /* Encode and store. FIXME: handle endianness. */ + D(printf("%s ch=%d addr=" TARGET_FMT_plx "\n", __func__, c, addr)); + cpu_physical_memory_write (addr, + (void *) &ctrl->channels[c].current_d, + sizeof ctrl->channels[c].current_d); +} + +static inline void channel_stop(struct fs_dma_ctrl *ctrl, int c) +{ + /* FIXME: */ +} + +static inline void channel_start(struct fs_dma_ctrl *ctrl, int c) +{ + if (ctrl->channels[c].client) + { + ctrl->channels[c].eol = 0; + ctrl->channels[c].state = RUNNING; + if (!ctrl->channels[c].input) + channel_out_run(ctrl, c); + } else + printf("WARNING: starting DMA ch %d with no client\n", c); + + qemu_bh_schedule_idle(ctrl->bh); +} + +static void channel_continue(struct fs_dma_ctrl *ctrl, int c) +{ + if (!channel_en(ctrl, c) + || channel_stopped(ctrl, c) + || ctrl->channels[c].state != RUNNING + /* Only reload the current data descriptor if it has eol set. */ + || !ctrl->channels[c].current_d.eol) { + D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n", + c, ctrl->channels[c].state, + channel_stopped(ctrl, c), + channel_en(ctrl,c), + ctrl->channels[c].eol)); + D(dump_d(c, &ctrl->channels[c].current_d)); + return; + } + + /* Reload the current descriptor. */ + channel_load_d(ctrl, c); + + /* If the current descriptor cleared the eol flag and we had already + reached eol state, do the continue. */ + if (!ctrl->channels[c].current_d.eol && ctrl->channels[c].eol) { + D(printf("continue %d ok %x\n", c, + ctrl->channels[c].current_d.next)); + ctrl->channels[c].regs[RW_SAVED_DATA] = + (uint32_t)(unsigned long)ctrl->channels[c].current_d.next; + channel_load_d(ctrl, c); + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = + (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf; + + channel_start(ctrl, c); + } + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = + (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf; +} + +static void channel_stream_cmd(struct fs_dma_ctrl *ctrl, int c, uint32_t v) +{ + unsigned int cmd = v & ((1 << 10) - 1); + + D(printf("%s ch=%d cmd=%x\n", + __func__, c, cmd)); + if (cmd & regk_dma_load_d) { + channel_load_d(ctrl, c); + if (cmd & regk_dma_burst) + channel_start(ctrl, c); + } + + if (cmd & regk_dma_load_c) { + channel_load_c(ctrl, c); + } +} + +static void channel_update_irq(struct fs_dma_ctrl *ctrl, int c) +{ + D(printf("%s %d\n", __func__, c)); + ctrl->channels[c].regs[R_INTR] &= + ~(ctrl->channels[c].regs[RW_ACK_INTR]); + + ctrl->channels[c].regs[R_MASKED_INTR] = + ctrl->channels[c].regs[R_INTR] + & ctrl->channels[c].regs[RW_INTR_MASK]; + + D(printf("%s: chan=%d masked_intr=%x\n", __func__, + c, + ctrl->channels[c].regs[R_MASKED_INTR])); + + qemu_set_irq(ctrl->channels[c].irq, + !!ctrl->channels[c].regs[R_MASKED_INTR]); +} + +static int channel_out_run(struct fs_dma_ctrl *ctrl, int c) +{ + uint32_t len; + uint32_t saved_data_buf; + unsigned char buf[2 * 1024]; + + struct dma_context_metadata meta; + bool send_context = true; + + if (ctrl->channels[c].eol) + return 0; + + do { + bool out_eop; + D(printf("ch=%d buf=%x after=%x\n", + c, + (uint32_t)ctrl->channels[c].current_d.buf, + (uint32_t)ctrl->channels[c].current_d.after)); + + if (send_context) { + if (ctrl->channels[c].client->client.metadata_push) { + meta.metadata = ctrl->channels[c].current_d.md; + ctrl->channels[c].client->client.metadata_push( + ctrl->channels[c].client->client.opaque, + &meta); + } + send_context = false; + } + + channel_load_d(ctrl, c); + saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF); + len = (uint32_t)(unsigned long) + ctrl->channels[c].current_d.after; + len -= saved_data_buf; + + if (len > sizeof buf) + len = sizeof buf; + cpu_physical_memory_read (saved_data_buf, buf, len); + + out_eop = ((saved_data_buf + len) == + ctrl->channels[c].current_d.after) && + ctrl->channels[c].current_d.out_eop; + + D(printf("channel %d pushes %x %u bytes eop=%u\n", c, + saved_data_buf, len, out_eop)); + + if (ctrl->channels[c].client->client.push) + ctrl->channels[c].client->client.push( + ctrl->channels[c].client->client.opaque, + buf, len, out_eop); + else + printf("WARNING: DMA ch%d dataloss," + " no attached client.\n", c); + + saved_data_buf += len; + + if (saved_data_buf == (uint32_t)(unsigned long) + ctrl->channels[c].current_d.after) { + /* Done. Step to next. */ + if (ctrl->channels[c].current_d.out_eop) { + send_context = true; + } + if (ctrl->channels[c].current_d.intr) { + /* data intr. */ + D(printf("signal intr %d eol=%d\n", + len, ctrl->channels[c].current_d.eol)); + ctrl->channels[c].regs[R_INTR] |= (1 << 2); + channel_update_irq(ctrl, c); + } + channel_store_d(ctrl, c); + if (ctrl->channels[c].current_d.eol) { + D(printf("channel %d EOL\n", c)); + ctrl->channels[c].eol = 1; + + /* Mark the context as disabled. */ + ctrl->channels[c].current_c.dis = 1; + channel_store_c(ctrl, c); + + channel_stop(ctrl, c); + } else { + ctrl->channels[c].regs[RW_SAVED_DATA] = + (uint32_t)(unsigned long)ctrl-> + channels[c].current_d.next; + /* Load new descriptor. */ + channel_load_d(ctrl, c); + saved_data_buf = (uint32_t)(unsigned long) + ctrl->channels[c].current_d.buf; + } + + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = + saved_data_buf; + D(dump_d(c, &ctrl->channels[c].current_d)); + } + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf; + } while (!ctrl->channels[c].eol); + return 1; +} + +static int channel_in_process(struct fs_dma_ctrl *ctrl, int c, + unsigned char *buf, int buflen, int eop) +{ + uint32_t len; + uint32_t saved_data_buf; + + if (ctrl->channels[c].eol == 1) + return 0; + + channel_load_d(ctrl, c); + saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF); + len = (uint32_t)(unsigned long)ctrl->channels[c].current_d.after; + len -= saved_data_buf; + + if (len > buflen) + len = buflen; + + cpu_physical_memory_write (saved_data_buf, buf, len); + saved_data_buf += len; + + if (saved_data_buf == + (uint32_t)(unsigned long)ctrl->channels[c].current_d.after + || eop) { + uint32_t r_intr = ctrl->channels[c].regs[R_INTR]; + + D(printf("in dscr end len=%d\n", + ctrl->channels[c].current_d.after + - ctrl->channels[c].current_d.buf)); + ctrl->channels[c].current_d.after = saved_data_buf; + + /* Done. Step to next. */ + if (ctrl->channels[c].current_d.intr) { + /* TODO: signal eop to the client. */ + /* data intr. */ + ctrl->channels[c].regs[R_INTR] |= 3; + } + if (eop) { + ctrl->channels[c].current_d.in_eop = 1; + ctrl->channels[c].regs[R_INTR] |= 8; + } + if (r_intr != ctrl->channels[c].regs[R_INTR]) + channel_update_irq(ctrl, c); + + channel_store_d(ctrl, c); + D(dump_d(c, &ctrl->channels[c].current_d)); + + if (ctrl->channels[c].current_d.eol) { + D(printf("channel %d EOL\n", c)); + ctrl->channels[c].eol = 1; + + /* Mark the context as disabled. */ + ctrl->channels[c].current_c.dis = 1; + channel_store_c(ctrl, c); + + channel_stop(ctrl, c); + } else { + ctrl->channels[c].regs[RW_SAVED_DATA] = + (uint32_t)(unsigned long)ctrl-> + channels[c].current_d.next; + /* Load new descriptor. */ + channel_load_d(ctrl, c); + saved_data_buf = (uint32_t)(unsigned long) + ctrl->channels[c].current_d.buf; + } + } + + ctrl->channels[c].regs[RW_SAVED_DATA_BUF] = saved_data_buf; + return len; +} + +static inline int channel_in_run(struct fs_dma_ctrl *ctrl, int c) +{ + if (ctrl->channels[c].client->client.pull) { + ctrl->channels[c].client->client.pull( + ctrl->channels[c].client->client.opaque); + return 1; + } else + return 0; +} + +static uint32_t dma_rinvalid (void *opaque, hwaddr addr) +{ + hw_error("Unsupported short raccess. reg=" TARGET_FMT_plx "\n", addr); + return 0; +} + +static uint64_t +dma_read(void *opaque, hwaddr addr, unsigned int size) +{ + struct fs_dma_ctrl *ctrl = opaque; + int c; + uint32_t r = 0; + + if (size != 4) { + dma_rinvalid(opaque, addr); + } + + /* Make addr relative to this channel and bounded to nr regs. */ + c = fs_channel(addr); + addr &= 0xff; + addr >>= 2; + switch (addr) + { + case RW_STAT: + r = ctrl->channels[c].state & 7; + r |= ctrl->channels[c].eol << 5; + r |= ctrl->channels[c].stream_cmd_src << 8; + break; + + default: + r = ctrl->channels[c].regs[addr]; + D(printf ("%s c=%d addr=" TARGET_FMT_plx "\n", + __func__, c, addr)); + break; + } + return r; +} + +static void +dma_winvalid (void *opaque, hwaddr addr, uint32_t value) +{ + hw_error("Unsupported short waccess. reg=" TARGET_FMT_plx "\n", addr); +} + +static void +dma_update_state(struct fs_dma_ctrl *ctrl, int c) +{ + if (ctrl->channels[c].regs[RW_CFG] & 2) + ctrl->channels[c].state = STOPPED; + if (!(ctrl->channels[c].regs[RW_CFG] & 1)) + ctrl->channels[c].state = RST; +} + +static void +dma_write(void *opaque, hwaddr addr, + uint64_t val64, unsigned int size) +{ + struct fs_dma_ctrl *ctrl = opaque; + uint32_t value = val64; + int c; + + if (size != 4) { + dma_winvalid(opaque, addr, value); + } + + /* Make addr relative to this channel and bounded to nr regs. */ + c = fs_channel(addr); + addr &= 0xff; + addr >>= 2; + switch (addr) + { + case RW_DATA: + ctrl->channels[c].regs[addr] = value; + break; + + case RW_CFG: + ctrl->channels[c].regs[addr] = value; + dma_update_state(ctrl, c); + break; + case RW_CMD: + /* continue. */ + if (value & ~1) + printf("Invalid store to ch=%d RW_CMD %x\n", + c, value); + ctrl->channels[c].regs[addr] = value; + channel_continue(ctrl, c); + break; + + case RW_SAVED_DATA: + case RW_SAVED_DATA_BUF: + case RW_GROUP: + case RW_GROUP_DOWN: + ctrl->channels[c].regs[addr] = value; + break; + + case RW_ACK_INTR: + case RW_INTR_MASK: + ctrl->channels[c].regs[addr] = value; + channel_update_irq(ctrl, c); + if (addr == RW_ACK_INTR) + ctrl->channels[c].regs[RW_ACK_INTR] = 0; + break; + + case RW_STREAM_CMD: + if (value & ~1023) + printf("Invalid store to ch=%d " + "RW_STREAMCMD %x\n", + c, value); + ctrl->channels[c].regs[addr] = value; + D(printf("stream_cmd ch=%d\n", c)); + channel_stream_cmd(ctrl, c, value); + break; + + default: + D(printf ("%s c=%d " TARGET_FMT_plx "\n", + __func__, c, addr)); + break; + } +} + +static const MemoryRegionOps dma_ops = { + .read = dma_read, + .write = dma_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4 + } +}; + +static int etraxfs_dmac_run(void *opaque) +{ + struct fs_dma_ctrl *ctrl = opaque; + int i; + int p = 0; + + for (i = 0; + i < ctrl->nr_channels; + i++) + { + if (ctrl->channels[i].state == RUNNING) + { + if (ctrl->channels[i].input) { + p += channel_in_run(ctrl, i); + } else { + p += channel_out_run(ctrl, i); + } + } + } + return p; +} + +int etraxfs_dmac_input(struct etraxfs_dma_client *client, + void *buf, int len, int eop) +{ + return channel_in_process(client->ctrl, client->channel, + buf, len, eop); +} + +/* Connect an IRQ line with a channel. */ +void etraxfs_dmac_connect(void *opaque, int c, qemu_irq *line, int input) +{ + struct fs_dma_ctrl *ctrl = opaque; + ctrl->channels[c].irq = *line; + ctrl->channels[c].input = input; +} + +void etraxfs_dmac_connect_client(void *opaque, int c, + struct etraxfs_dma_client *cl) +{ + struct fs_dma_ctrl *ctrl = opaque; + cl->ctrl = ctrl; + cl->channel = c; + ctrl->channels[c].client = cl; +} + + +static void DMA_run(void *opaque) +{ + struct fs_dma_ctrl *etraxfs_dmac = opaque; + int p = 1; + + if (runstate_is_running()) + p = etraxfs_dmac_run(etraxfs_dmac); + + if (p) + qemu_bh_schedule_idle(etraxfs_dmac->bh); +} + +void *etraxfs_dmac_init(hwaddr base, int nr_channels) +{ + struct fs_dma_ctrl *ctrl = NULL; + + ctrl = g_malloc0(sizeof *ctrl); + + ctrl->bh = qemu_bh_new(DMA_run, ctrl); + + ctrl->nr_channels = nr_channels; + ctrl->channels = g_malloc0(sizeof ctrl->channels[0] * nr_channels); + + memory_region_init_io(&ctrl->mmio, &dma_ops, ctrl, "etraxfs-dma", + nr_channels * 0x2000); + memory_region_add_subregion(get_system_memory(), base, &ctrl->mmio); + + return ctrl; +} diff --git a/hw/dma/omap_dma.c b/hw/dma/omap_dma.c new file mode 100644 index 0000000000..184fcee1a7 --- /dev/null +++ b/hw/dma/omap_dma.c @@ -0,0 +1,2101 @@ +/* + * 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) +{ + return 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 & (1 << 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 & (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_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 |= 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->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) { + return omap_badwidth_write16(opaque, addr, value); + } + + 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 & (1 << drq)) { + s->dma->drqbmp |= 1 << drq; + omap_dma_process_request(s, drq); + } + } else + s->dma->drqbmp &= ~(1 << 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_irqs(omap_dma_clk_update, s, 1)[0]); + omap_dma_reset(s->dma); + omap_dma_clk_update(s, 0, 1); + + memory_region_init_io(&s->iomem, &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) { + return omap_badwidth_write16(opaque, addr, value); + } + + 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_irqs(omap_dma_clk_update, s, 1)[0]); + omap_dma_reset(s->dma); + omap_dma_clk_update(s, 0, !!s->dma->freq); + + memory_region_init_io(&s->iomem, &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; +} diff --git a/hw/dma/pxa2xx_dma.c b/hw/dma/pxa2xx_dma.c new file mode 100644 index 0000000000..6e4c1f6d62 --- /dev/null +++ b/hw/dma/pxa2xx_dma.c @@ -0,0 +1,574 @@ +/* + * 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 "hw/hw.h" +#include "hw/arm/pxa.h" +#include "hw/sysbus.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; + +typedef struct PXA2xxDMAState { + SysBusDevice busdev; + 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; +} PXA2xxDMAState; + +#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, (uint8_t *) 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", __FUNCTION__, 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) { + hw_error("%s: Bad access width\n", __FUNCTION__); + 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; + } + } + + hw_error("%s: Bad offset 0x" TARGET_FMT_plx "\n", __FUNCTION__, 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) { + hw_error("%s: Bad access width\n", __FUNCTION__); + 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", + __FUNCTION__, (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: + hw_error("%s: Bad offset " TARGET_FMT_plx "\n", __FUNCTION__, 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", __FUNCTION__, 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 int pxa2xx_dma_init(SysBusDevice *dev) +{ + int i; + PXA2xxDMAState *s; + s = FROM_SYSBUS(PXA2xxDMAState, dev); + + if (s->channels <= 0) { + return -1; + } + + s->chan = g_malloc0(sizeof(PXA2xxDMAChannel) * s->channels); + + memset(s->chan, 0, sizeof(PXA2xxDMAChannel) * s->channels); + for (i = 0; i < s->channels; i ++) + s->chan[i].state = DCSR_STOPINTR; + + memset(s->req, 0, sizeof(uint8_t) * PXA2XX_DMA_NUM_REQUESTS); + + qdev_init_gpio_in(&dev->qdev, pxa2xx_dma_request, PXA2XX_DMA_NUM_REQUESTS); + + memory_region_init_io(&s->iomem, &pxa2xx_dma_ops, s, + "pxa2xx.dma", 0x00010000); + sysbus_init_mmio(dev, &s->iomem); + sysbus_init_irq(dev, &s->irq); + + return 0; +} + +DeviceState *pxa27x_dma_init(hwaddr base, qemu_irq irq) +{ + DeviceState *dev; + + dev = qdev_create(NULL, "pxa2xx-dma"); + qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS); + qdev_init_nofail(dev); + + 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_create(NULL, "pxa2xx-dma"); + qdev_prop_set_int32(dev, "channels", PXA27X_DMA_NUM_CHANNELS); + qdev_init_nofail(dev); + + 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 VMStateDescription vmstate_pxa2xx_dma_chan = { + .name = "pxa2xx_dma_chan", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .fields = (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 VMStateDescription vmstate_pxa2xx_dma = { + .name = "pxa2xx_dma", + .version_id = 1, + .minimum_version_id = 0, + .minimum_version_id_old = 0, + .fields = (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); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = pxa2xx_dma_init; + dc->desc = "PXA2xx DMA controller"; + dc->vmsd = &vmstate_pxa2xx_dma; + dc->props = pxa2xx_dma_properties; +} + +static const TypeInfo pxa2xx_dma_info = { + .name = "pxa2xx-dma", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(PXA2xxDMAState), + .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) diff --git a/hw/dma/soc_dma.c b/hw/dma/soc_dma.c new file mode 100644 index 0000000000..5e3491d373 --- /dev/null +++ b/hw/dma/soc_dma.c @@ -0,0 +1,366 @@ +/* + * On-chip DMA controller framework. + * + * Copyright (C) 2008 Nokia Corporation + * Written by Andrzej Zaborowski <andrew@openedhand.com> + * + * 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 or + * (at your option) version 3 of the License. + * + * 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/soc_dma.h" + +static void transfer_mem2mem(struct soc_dma_ch_s *ch) +{ + memcpy(ch->paddr[0], ch->paddr[1], ch->bytes); + ch->paddr[0] += ch->bytes; + ch->paddr[1] += ch->bytes; +} + +static void transfer_mem2fifo(struct soc_dma_ch_s *ch) +{ + ch->io_fn[1](ch->io_opaque[1], ch->paddr[0], ch->bytes); + ch->paddr[0] += ch->bytes; +} + +static void transfer_fifo2mem(struct soc_dma_ch_s *ch) +{ + ch->io_fn[0](ch->io_opaque[0], ch->paddr[1], ch->bytes); + ch->paddr[1] += ch->bytes; +} + +/* This is further optimisable but isn't very important because often + * DMA peripherals forbid this kind of transfers and even when they don't, + * oprating systems may not need to use them. */ +static void *fifo_buf; +static int fifo_size; +static void transfer_fifo2fifo(struct soc_dma_ch_s *ch) +{ + if (ch->bytes > fifo_size) + fifo_buf = g_realloc(fifo_buf, fifo_size = ch->bytes); + + /* Implement as transfer_fifo2linear + transfer_linear2fifo. */ + ch->io_fn[0](ch->io_opaque[0], fifo_buf, ch->bytes); + ch->io_fn[1](ch->io_opaque[1], fifo_buf, ch->bytes); +} + +struct dma_s { + struct soc_dma_s soc; + int chnum; + uint64_t ch_enable_mask; + int64_t channel_freq; + int enabled_count; + + struct memmap_entry_s { + enum soc_dma_port_type type; + hwaddr addr; + union { + struct { + void *opaque; + soc_dma_io_t fn; + int out; + } fifo; + struct { + void *base; + size_t size; + } mem; + } u; + } *memmap; + int memmap_size; + + struct soc_dma_ch_s ch[0]; +}; + +static void soc_dma_ch_schedule(struct soc_dma_ch_s *ch, int delay_bytes) +{ + int64_t now = qemu_get_clock_ns(vm_clock); + struct dma_s *dma = (struct dma_s *) ch->dma; + + qemu_mod_timer(ch->timer, now + delay_bytes / dma->channel_freq); +} + +static void soc_dma_ch_run(void *opaque) +{ + struct soc_dma_ch_s *ch = (struct soc_dma_ch_s *) opaque; + + ch->running = 1; + ch->dma->setup_fn(ch); + ch->transfer_fn(ch); + ch->running = 0; + + if (ch->enable) + soc_dma_ch_schedule(ch, ch->bytes); + ch->bytes = 0; +} + +static inline struct memmap_entry_s *soc_dma_lookup(struct dma_s *dma, + hwaddr addr) +{ + struct memmap_entry_s *lo; + int hi; + + lo = dma->memmap; + hi = dma->memmap_size; + + while (hi > 1) { + hi /= 2; + if (lo[hi].addr <= addr) + lo += hi; + } + + return lo; +} + +static inline enum soc_dma_port_type soc_dma_ch_update_type( + struct soc_dma_ch_s *ch, int port) +{ + struct dma_s *dma = (struct dma_s *) ch->dma; + struct memmap_entry_s *entry = soc_dma_lookup(dma, ch->vaddr[port]); + + if (entry->type == soc_dma_port_fifo) { + while (entry < dma->memmap + dma->memmap_size && + entry->u.fifo.out != port) + entry ++; + if (entry->addr != ch->vaddr[port] || entry->u.fifo.out != port) + return soc_dma_port_other; + + if (ch->type[port] != soc_dma_access_const) + return soc_dma_port_other; + + ch->io_fn[port] = entry->u.fifo.fn; + ch->io_opaque[port] = entry->u.fifo.opaque; + return soc_dma_port_fifo; + } else if (entry->type == soc_dma_port_mem) { + if (entry->addr > ch->vaddr[port] || + entry->addr + entry->u.mem.size <= ch->vaddr[port]) + return soc_dma_port_other; + + /* TODO: support constant memory address for source port as used for + * drawing solid rectangles by PalmOS(R). */ + if (ch->type[port] != soc_dma_access_const) + return soc_dma_port_other; + + ch->paddr[port] = (uint8_t *) entry->u.mem.base + + (ch->vaddr[port] - entry->addr); + /* TODO: save bytes left to the end of the mapping somewhere so we + * can check we're not reading beyond it. */ + return soc_dma_port_mem; + } else + return soc_dma_port_other; +} + +void soc_dma_ch_update(struct soc_dma_ch_s *ch) +{ + enum soc_dma_port_type src, dst; + + src = soc_dma_ch_update_type(ch, 0); + if (src == soc_dma_port_other) { + ch->update = 0; + ch->transfer_fn = ch->dma->transfer_fn; + return; + } + dst = soc_dma_ch_update_type(ch, 1); + + /* TODO: use src and dst as array indices. */ + if (src == soc_dma_port_mem && dst == soc_dma_port_mem) + ch->transfer_fn = transfer_mem2mem; + else if (src == soc_dma_port_mem && dst == soc_dma_port_fifo) + ch->transfer_fn = transfer_mem2fifo; + else if (src == soc_dma_port_fifo && dst == soc_dma_port_mem) + ch->transfer_fn = transfer_fifo2mem; + else if (src == soc_dma_port_fifo && dst == soc_dma_port_fifo) + ch->transfer_fn = transfer_fifo2fifo; + else + ch->transfer_fn = ch->dma->transfer_fn; + + ch->update = (dst != soc_dma_port_other); +} + +static void soc_dma_ch_freq_update(struct dma_s *s) +{ + if (s->enabled_count) + /* We completely ignore channel priorities and stuff */ + s->channel_freq = s->soc.freq / s->enabled_count; + else { + /* TODO: Signal that we want to disable the functional clock and let + * the platform code decide what to do with it, i.e. check that + * auto-idle is enabled in the clock controller and if we are stopping + * the clock, do the same with any parent clocks that had only one + * user keeping them on and auto-idle enabled. */ + } +} + +void soc_dma_set_request(struct soc_dma_ch_s *ch, int level) +{ + struct dma_s *dma = (struct dma_s *) ch->dma; + + dma->enabled_count += level - ch->enable; + + if (level) + dma->ch_enable_mask |= 1 << ch->num; + else + dma->ch_enable_mask &= ~(1 << ch->num); + + if (level != ch->enable) { + soc_dma_ch_freq_update(dma); + ch->enable = level; + + if (!ch->enable) + qemu_del_timer(ch->timer); + else if (!ch->running) + soc_dma_ch_run(ch); + else + soc_dma_ch_schedule(ch, 1); + } +} + +void soc_dma_reset(struct soc_dma_s *soc) +{ + struct dma_s *s = (struct dma_s *) soc; + + s->soc.drqbmp = 0; + s->ch_enable_mask = 0; + s->enabled_count = 0; + soc_dma_ch_freq_update(s); +} + +/* TODO: take a functional-clock argument */ +struct soc_dma_s *soc_dma_init(int n) +{ + int i; + struct dma_s *s = g_malloc0(sizeof(*s) + n * sizeof(*s->ch)); + + s->chnum = n; + s->soc.ch = s->ch; + for (i = 0; i < n; i ++) { + s->ch[i].dma = &s->soc; + s->ch[i].num = i; + s->ch[i].timer = qemu_new_timer_ns(vm_clock, soc_dma_ch_run, &s->ch[i]); + } + + soc_dma_reset(&s->soc); + fifo_size = 0; + + return &s->soc; +} + +void soc_dma_port_add_fifo(struct soc_dma_s *soc, hwaddr virt_base, + soc_dma_io_t fn, void *opaque, int out) +{ + struct memmap_entry_s *entry; + struct dma_s *dma = (struct dma_s *) soc; + + dma->memmap = g_realloc(dma->memmap, sizeof(*entry) * + (dma->memmap_size + 1)); + entry = soc_dma_lookup(dma, virt_base); + + if (dma->memmap_size) { + if (entry->type == soc_dma_port_mem) { + if (entry->addr <= virt_base && + entry->addr + entry->u.mem.size > virt_base) { + fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx + " collides with RAM region at " TARGET_FMT_lx + "-" TARGET_FMT_lx "\n", __FUNCTION__, + (target_ulong) virt_base, + (target_ulong) entry->addr, (target_ulong) + (entry->addr + entry->u.mem.size)); + exit(-1); + } + + if (entry->addr <= virt_base) + entry ++; + } else + while (entry < dma->memmap + dma->memmap_size && + entry->addr <= virt_base) { + if (entry->addr == virt_base && entry->u.fifo.out == out) { + fprintf(stderr, "%s: FIFO at " TARGET_FMT_lx + " collides FIFO at " TARGET_FMT_lx "\n", + __FUNCTION__, (target_ulong) virt_base, + (target_ulong) entry->addr); + exit(-1); + } + + entry ++; + } + + memmove(entry + 1, entry, + (uint8_t *) (dma->memmap + dma->memmap_size ++) - + (uint8_t *) entry); + } else + dma->memmap_size ++; + + entry->addr = virt_base; + entry->type = soc_dma_port_fifo; + entry->u.fifo.fn = fn; + entry->u.fifo.opaque = opaque; + entry->u.fifo.out = out; +} + +void soc_dma_port_add_mem(struct soc_dma_s *soc, uint8_t *phys_base, + hwaddr virt_base, size_t size) +{ + struct memmap_entry_s *entry; + struct dma_s *dma = (struct dma_s *) soc; + + dma->memmap = g_realloc(dma->memmap, sizeof(*entry) * + (dma->memmap_size + 1)); + entry = soc_dma_lookup(dma, virt_base); + + if (dma->memmap_size) { + if (entry->type == soc_dma_port_mem) { + if ((entry->addr >= virt_base && entry->addr < virt_base + size) || + (entry->addr <= virt_base && + entry->addr + entry->u.mem.size > virt_base)) { + fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx + " collides with RAM region at " TARGET_FMT_lx + "-" TARGET_FMT_lx "\n", __FUNCTION__, + (target_ulong) virt_base, + (target_ulong) (virt_base + size), + (target_ulong) entry->addr, (target_ulong) + (entry->addr + entry->u.mem.size)); + exit(-1); + } + + if (entry->addr <= virt_base) + entry ++; + } else { + if (entry->addr >= virt_base && + entry->addr < virt_base + size) { + fprintf(stderr, "%s: RAM at " TARGET_FMT_lx "-" TARGET_FMT_lx + " collides with FIFO at " TARGET_FMT_lx + "\n", __FUNCTION__, + (target_ulong) virt_base, + (target_ulong) (virt_base + size), + (target_ulong) entry->addr); + exit(-1); + } + + while (entry < dma->memmap + dma->memmap_size && + entry->addr <= virt_base) + entry ++; + } + + memmove(entry + 1, entry, + (uint8_t *) (dma->memmap + dma->memmap_size ++) - + (uint8_t *) entry); + } else + dma->memmap_size ++; + + entry->addr = virt_base; + entry->type = soc_dma_port_mem; + entry->u.mem.base = phys_base; + entry->u.mem.size = size; +} + +/* TODO: port removal for ports like PCMCIA memory */ diff --git a/hw/dma/sparc32_dma.c b/hw/dma/sparc32_dma.c new file mode 100644 index 0000000000..fd21533f15 --- /dev/null +++ b/hw/dma/sparc32_dma.c @@ -0,0 +1,315 @@ +/* + * QEMU Sparc32 DMA controller emulation + * + * Copyright (c) 2006 Fabrice Bellard + * + * Modifications: + * 2010-Feb-14 Artyom Tarasenko : reworked irq generation + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/hw.h" +#include "hw/sparc/sparc32_dma.h" +#include "hw/sparc/sun4m.h" +#include "hw/sysbus.h" +#include "trace.h" + +/* + * This is the DMA controller part of chip STP2000 (Master I/O), also + * produced as NCR89C100. See + * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt + * and + * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/DMA2.txt + */ + +#define DMA_REGS 4 +#define DMA_SIZE (4 * sizeof(uint32_t)) +/* We need the mask, because one instance of the device is not page + aligned (ledma, start address 0x0010) */ +#define DMA_MASK (DMA_SIZE - 1) +/* OBP says 0x20 bytes for ledma, the extras are aliased to espdma */ +#define DMA_ETH_SIZE (8 * sizeof(uint32_t)) +#define DMA_MAX_REG_OFFSET (2 * DMA_SIZE - 1) + +#define DMA_VER 0xa0000000 +#define DMA_INTR 1 +#define DMA_INTREN 0x10 +#define DMA_WRITE_MEM 0x100 +#define DMA_EN 0x200 +#define DMA_LOADED 0x04000000 +#define DMA_DRAIN_FIFO 0x40 +#define DMA_RESET 0x80 + +/* XXX SCSI and ethernet should have different read-only bit masks */ +#define DMA_CSR_RO_MASK 0xfe000007 + +typedef struct DMAState DMAState; + +struct DMAState { + SysBusDevice busdev; + MemoryRegion iomem; + uint32_t dmaregs[DMA_REGS]; + qemu_irq irq; + void *iommu; + qemu_irq gpio[2]; + uint32_t is_ledma; +}; + +enum { + GPIO_RESET = 0, + GPIO_DMA, +}; + +/* Note: on sparc, the lance 16 bit bus is swapped */ +void ledma_memory_read(void *opaque, hwaddr addr, + uint8_t *buf, int len, int do_bswap) +{ + DMAState *s = opaque; + int i; + + addr |= s->dmaregs[3]; + trace_ledma_memory_read(addr); + if (do_bswap) { + sparc_iommu_memory_read(s->iommu, addr, buf, len); + } else { + addr &= ~1; + len &= ~1; + sparc_iommu_memory_read(s->iommu, addr, buf, len); + for(i = 0; i < len; i += 2) { + bswap16s((uint16_t *)(buf + i)); + } + } +} + +void ledma_memory_write(void *opaque, hwaddr addr, + uint8_t *buf, int len, int do_bswap) +{ + DMAState *s = opaque; + int l, i; + uint16_t tmp_buf[32]; + + addr |= s->dmaregs[3]; + trace_ledma_memory_write(addr); + if (do_bswap) { + sparc_iommu_memory_write(s->iommu, addr, buf, len); + } else { + addr &= ~1; + len &= ~1; + while (len > 0) { + l = len; + if (l > sizeof(tmp_buf)) + l = sizeof(tmp_buf); + for(i = 0; i < l; i += 2) { + tmp_buf[i >> 1] = bswap16(*(uint16_t *)(buf + i)); + } + sparc_iommu_memory_write(s->iommu, addr, (uint8_t *)tmp_buf, l); + len -= l; + buf += l; + addr += l; + } + } +} + +static void dma_set_irq(void *opaque, int irq, int level) +{ + DMAState *s = opaque; + if (level) { + s->dmaregs[0] |= DMA_INTR; + if (s->dmaregs[0] & DMA_INTREN) { + trace_sparc32_dma_set_irq_raise(); + qemu_irq_raise(s->irq); + } + } else { + if (s->dmaregs[0] & DMA_INTR) { + s->dmaregs[0] &= ~DMA_INTR; + if (s->dmaregs[0] & DMA_INTREN) { + trace_sparc32_dma_set_irq_lower(); + qemu_irq_lower(s->irq); + } + } + } +} + +void espdma_memory_read(void *opaque, uint8_t *buf, int len) +{ + DMAState *s = opaque; + + trace_espdma_memory_read(s->dmaregs[1]); + sparc_iommu_memory_read(s->iommu, s->dmaregs[1], buf, len); + s->dmaregs[1] += len; +} + +void espdma_memory_write(void *opaque, uint8_t *buf, int len) +{ + DMAState *s = opaque; + + trace_espdma_memory_write(s->dmaregs[1]); + sparc_iommu_memory_write(s->iommu, s->dmaregs[1], buf, len); + s->dmaregs[1] += len; +} + +static uint64_t dma_mem_read(void *opaque, hwaddr addr, + unsigned size) +{ + DMAState *s = opaque; + uint32_t saddr; + + if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) { + /* aliased to espdma, but we can't get there from here */ + /* buggy driver if using undocumented behavior, just return 0 */ + trace_sparc32_dma_mem_readl(addr, 0); + return 0; + } + saddr = (addr & DMA_MASK) >> 2; + trace_sparc32_dma_mem_readl(addr, s->dmaregs[saddr]); + return s->dmaregs[saddr]; +} + +static void dma_mem_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + DMAState *s = opaque; + uint32_t saddr; + + if (s->is_ledma && (addr > DMA_MAX_REG_OFFSET)) { + /* aliased to espdma, but we can't get there from here */ + trace_sparc32_dma_mem_writel(addr, 0, val); + return; + } + saddr = (addr & DMA_MASK) >> 2; + trace_sparc32_dma_mem_writel(addr, s->dmaregs[saddr], val); + switch (saddr) { + case 0: + if (val & DMA_INTREN) { + if (s->dmaregs[0] & DMA_INTR) { + trace_sparc32_dma_set_irq_raise(); + qemu_irq_raise(s->irq); + } + } else { + if (s->dmaregs[0] & (DMA_INTR | DMA_INTREN)) { + trace_sparc32_dma_set_irq_lower(); + qemu_irq_lower(s->irq); + } + } + if (val & DMA_RESET) { + qemu_irq_raise(s->gpio[GPIO_RESET]); + qemu_irq_lower(s->gpio[GPIO_RESET]); + } else if (val & DMA_DRAIN_FIFO) { + val &= ~DMA_DRAIN_FIFO; + } else if (val == 0) + val = DMA_DRAIN_FIFO; + + if (val & DMA_EN && !(s->dmaregs[0] & DMA_EN)) { + trace_sparc32_dma_enable_raise(); + qemu_irq_raise(s->gpio[GPIO_DMA]); + } else if (!(val & DMA_EN) && !!(s->dmaregs[0] & DMA_EN)) { + trace_sparc32_dma_enable_lower(); + qemu_irq_lower(s->gpio[GPIO_DMA]); + } + + val &= ~DMA_CSR_RO_MASK; + val |= DMA_VER; + s->dmaregs[0] = (s->dmaregs[0] & DMA_CSR_RO_MASK) | val; + break; + case 1: + s->dmaregs[0] |= DMA_LOADED; + /* fall through */ + default: + s->dmaregs[saddr] = val; + break; + } +} + +static const MemoryRegionOps dma_mem_ops = { + .read = dma_mem_read, + .write = dma_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static void dma_reset(DeviceState *d) +{ + DMAState *s = container_of(d, DMAState, busdev.qdev); + + memset(s->dmaregs, 0, DMA_SIZE); + s->dmaregs[0] = DMA_VER; +} + +static const VMStateDescription vmstate_dma = { + .name ="sparc32_dma", + .version_id = 2, + .minimum_version_id = 2, + .minimum_version_id_old = 2, + .fields = (VMStateField []) { + VMSTATE_UINT32_ARRAY(dmaregs, DMAState, DMA_REGS), + VMSTATE_END_OF_LIST() + } +}; + +static int sparc32_dma_init1(SysBusDevice *dev) +{ + DMAState *s = FROM_SYSBUS(DMAState, dev); + int reg_size; + + sysbus_init_irq(dev, &s->irq); + + reg_size = s->is_ledma ? DMA_ETH_SIZE : DMA_SIZE; + memory_region_init_io(&s->iomem, &dma_mem_ops, s, "dma", reg_size); + sysbus_init_mmio(dev, &s->iomem); + + qdev_init_gpio_in(&dev->qdev, dma_set_irq, 1); + qdev_init_gpio_out(&dev->qdev, s->gpio, 2); + + return 0; +} + +static Property sparc32_dma_properties[] = { + DEFINE_PROP_PTR("iommu_opaque", DMAState, iommu), + DEFINE_PROP_UINT32("is_ledma", DMAState, is_ledma, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void sparc32_dma_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = sparc32_dma_init1; + dc->reset = dma_reset; + dc->vmsd = &vmstate_dma; + dc->props = sparc32_dma_properties; +} + +static const TypeInfo sparc32_dma_info = { + .name = "sparc32_dma", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(DMAState), + .class_init = sparc32_dma_class_init, +}; + +static void sparc32_dma_register_types(void) +{ + type_register_static(&sparc32_dma_info); +} + +type_init(sparc32_dma_register_types) diff --git a/hw/dma/sun4m_iommu.c b/hw/dma/sun4m_iommu.c new file mode 100644 index 0000000000..8312bff5fe --- /dev/null +++ b/hw/dma/sun4m_iommu.c @@ -0,0 +1,387 @@ +/* + * QEMU Sun4m iommu emulation + * + * Copyright (c) 2003-2005 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/sparc/sun4m.h" +#include "hw/sysbus.h" +#include "trace.h" + +/* + * I/O MMU used by Sun4m systems + * + * Chipset docs: + * "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01, + * http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf + */ + +#define IOMMU_NREGS (4*4096/4) +#define IOMMU_CTRL (0x0000 >> 2) +#define IOMMU_CTRL_IMPL 0xf0000000 /* Implementation */ +#define IOMMU_CTRL_VERS 0x0f000000 /* Version */ +#define IOMMU_CTRL_RNGE 0x0000001c /* Mapping RANGE */ +#define IOMMU_RNGE_16MB 0x00000000 /* 0xff000000 -> 0xffffffff */ +#define IOMMU_RNGE_32MB 0x00000004 /* 0xfe000000 -> 0xffffffff */ +#define IOMMU_RNGE_64MB 0x00000008 /* 0xfc000000 -> 0xffffffff */ +#define IOMMU_RNGE_128MB 0x0000000c /* 0xf8000000 -> 0xffffffff */ +#define IOMMU_RNGE_256MB 0x00000010 /* 0xf0000000 -> 0xffffffff */ +#define IOMMU_RNGE_512MB 0x00000014 /* 0xe0000000 -> 0xffffffff */ +#define IOMMU_RNGE_1GB 0x00000018 /* 0xc0000000 -> 0xffffffff */ +#define IOMMU_RNGE_2GB 0x0000001c /* 0x80000000 -> 0xffffffff */ +#define IOMMU_CTRL_ENAB 0x00000001 /* IOMMU Enable */ +#define IOMMU_CTRL_MASK 0x0000001d + +#define IOMMU_BASE (0x0004 >> 2) +#define IOMMU_BASE_MASK 0x07fffc00 + +#define IOMMU_TLBFLUSH (0x0014 >> 2) +#define IOMMU_TLBFLUSH_MASK 0xffffffff + +#define IOMMU_PGFLUSH (0x0018 >> 2) +#define IOMMU_PGFLUSH_MASK 0xffffffff + +#define IOMMU_AFSR (0x1000 >> 2) +#define IOMMU_AFSR_ERR 0x80000000 /* LE, TO, or BE asserted */ +#define IOMMU_AFSR_LE 0x40000000 /* SBUS reports error after + transaction */ +#define IOMMU_AFSR_TO 0x20000000 /* Write access took more than + 12.8 us. */ +#define IOMMU_AFSR_BE 0x10000000 /* Write access received error + acknowledge */ +#define IOMMU_AFSR_SIZE 0x0e000000 /* Size of transaction causing error */ +#define IOMMU_AFSR_S 0x01000000 /* Sparc was in supervisor mode */ +#define IOMMU_AFSR_RESV 0x00800000 /* Reserved, forced to 0x8 by + hardware */ +#define IOMMU_AFSR_ME 0x00080000 /* Multiple errors occurred */ +#define IOMMU_AFSR_RD 0x00040000 /* A read operation was in progress */ +#define IOMMU_AFSR_FAV 0x00020000 /* IOMMU afar has valid contents */ +#define IOMMU_AFSR_MASK 0xff0fffff + +#define IOMMU_AFAR (0x1004 >> 2) + +#define IOMMU_AER (0x1008 >> 2) /* Arbiter Enable Register */ +#define IOMMU_AER_EN_P0_ARB 0x00000001 /* MBus master 0x8 (Always 1) */ +#define IOMMU_AER_EN_P1_ARB 0x00000002 /* MBus master 0x9 */ +#define IOMMU_AER_EN_P2_ARB 0x00000004 /* MBus master 0xa */ +#define IOMMU_AER_EN_P3_ARB 0x00000008 /* MBus master 0xb */ +#define IOMMU_AER_EN_0 0x00010000 /* SBus slot 0 */ +#define IOMMU_AER_EN_1 0x00020000 /* SBus slot 1 */ +#define IOMMU_AER_EN_2 0x00040000 /* SBus slot 2 */ +#define IOMMU_AER_EN_3 0x00080000 /* SBus slot 3 */ +#define IOMMU_AER_EN_F 0x00100000 /* SBus on-board */ +#define IOMMU_AER_SBW 0x80000000 /* S-to-M asynchronous writes */ +#define IOMMU_AER_MASK 0x801f000f + +#define IOMMU_SBCFG0 (0x1010 >> 2) /* SBUS configration per-slot */ +#define IOMMU_SBCFG1 (0x1014 >> 2) /* SBUS configration per-slot */ +#define IOMMU_SBCFG2 (0x1018 >> 2) /* SBUS configration per-slot */ +#define IOMMU_SBCFG3 (0x101c >> 2) /* SBUS configration per-slot */ +#define IOMMU_SBCFG_SAB30 0x00010000 /* Phys-address bit 30 when + bypass enabled */ +#define IOMMU_SBCFG_BA16 0x00000004 /* Slave supports 16 byte bursts */ +#define IOMMU_SBCFG_BA8 0x00000002 /* Slave supports 8 byte bursts */ +#define IOMMU_SBCFG_BYPASS 0x00000001 /* Bypass IOMMU, treat all addresses + produced by this device as pure + physical. */ +#define IOMMU_SBCFG_MASK 0x00010003 + +#define IOMMU_ARBEN (0x2000 >> 2) /* SBUS arbitration enable */ +#define IOMMU_ARBEN_MASK 0x001f0000 +#define IOMMU_MID 0x00000008 + +#define IOMMU_MASK_ID (0x3018 >> 2) /* Mask ID */ +#define IOMMU_MASK_ID_MASK 0x00ffffff + +#define IOMMU_MSII_MASK 0x26000000 /* microSPARC II mask number */ +#define IOMMU_TS_MASK 0x23000000 /* turboSPARC mask number */ + +/* The format of an iopte in the page tables */ +#define IOPTE_PAGE 0xffffff00 /* Physical page number (PA[35:12]) */ +#define IOPTE_CACHE 0x00000080 /* Cached (in vme IOCACHE or + Viking/MXCC) */ +#define IOPTE_WRITE 0x00000004 /* Writable */ +#define IOPTE_VALID 0x00000002 /* IOPTE is valid */ +#define IOPTE_WAZ 0x00000001 /* Write as zeros */ + +#define IOMMU_PAGE_SHIFT 12 +#define IOMMU_PAGE_SIZE (1 << IOMMU_PAGE_SHIFT) +#define IOMMU_PAGE_MASK ~(IOMMU_PAGE_SIZE - 1) + +typedef struct IOMMUState { + SysBusDevice busdev; + MemoryRegion iomem; + uint32_t regs[IOMMU_NREGS]; + hwaddr iostart; + qemu_irq irq; + uint32_t version; +} IOMMUState; + +static uint64_t iommu_mem_read(void *opaque, hwaddr addr, + unsigned size) +{ + IOMMUState *s = opaque; + hwaddr saddr; + uint32_t ret; + + saddr = addr >> 2; + switch (saddr) { + default: + ret = s->regs[saddr]; + break; + case IOMMU_AFAR: + case IOMMU_AFSR: + ret = s->regs[saddr]; + qemu_irq_lower(s->irq); + break; + } + trace_sun4m_iommu_mem_readl(saddr, ret); + return ret; +} + +static void iommu_mem_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + IOMMUState *s = opaque; + hwaddr saddr; + + saddr = addr >> 2; + trace_sun4m_iommu_mem_writel(saddr, val); + switch (saddr) { + case IOMMU_CTRL: + switch (val & IOMMU_CTRL_RNGE) { + case IOMMU_RNGE_16MB: + s->iostart = 0xffffffffff000000ULL; + break; + case IOMMU_RNGE_32MB: + s->iostart = 0xfffffffffe000000ULL; + break; + case IOMMU_RNGE_64MB: + s->iostart = 0xfffffffffc000000ULL; + break; + case IOMMU_RNGE_128MB: + s->iostart = 0xfffffffff8000000ULL; + break; + case IOMMU_RNGE_256MB: + s->iostart = 0xfffffffff0000000ULL; + break; + case IOMMU_RNGE_512MB: + s->iostart = 0xffffffffe0000000ULL; + break; + case IOMMU_RNGE_1GB: + s->iostart = 0xffffffffc0000000ULL; + break; + default: + case IOMMU_RNGE_2GB: + s->iostart = 0xffffffff80000000ULL; + break; + } + trace_sun4m_iommu_mem_writel_ctrl(s->iostart); + s->regs[saddr] = ((val & IOMMU_CTRL_MASK) | s->version); + break; + case IOMMU_BASE: + s->regs[saddr] = val & IOMMU_BASE_MASK; + break; + case IOMMU_TLBFLUSH: + trace_sun4m_iommu_mem_writel_tlbflush(val); + s->regs[saddr] = val & IOMMU_TLBFLUSH_MASK; + break; + case IOMMU_PGFLUSH: + trace_sun4m_iommu_mem_writel_pgflush(val); + s->regs[saddr] = val & IOMMU_PGFLUSH_MASK; + break; + case IOMMU_AFAR: + s->regs[saddr] = val; + qemu_irq_lower(s->irq); + break; + case IOMMU_AER: + s->regs[saddr] = (val & IOMMU_AER_MASK) | IOMMU_AER_EN_P0_ARB; + break; + case IOMMU_AFSR: + s->regs[saddr] = (val & IOMMU_AFSR_MASK) | IOMMU_AFSR_RESV; + qemu_irq_lower(s->irq); + break; + case IOMMU_SBCFG0: + case IOMMU_SBCFG1: + case IOMMU_SBCFG2: + case IOMMU_SBCFG3: + s->regs[saddr] = val & IOMMU_SBCFG_MASK; + break; + case IOMMU_ARBEN: + // XXX implement SBus probing: fault when reading unmapped + // addresses, fault cause and address stored to MMU/IOMMU + s->regs[saddr] = (val & IOMMU_ARBEN_MASK) | IOMMU_MID; + break; + case IOMMU_MASK_ID: + s->regs[saddr] |= val & IOMMU_MASK_ID_MASK; + break; + default: + s->regs[saddr] = val; + break; + } +} + +static const MemoryRegionOps iommu_mem_ops = { + .read = iommu_mem_read, + .write = iommu_mem_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static uint32_t iommu_page_get_flags(IOMMUState *s, hwaddr addr) +{ + uint32_t ret; + hwaddr iopte; + hwaddr pa = addr; + + iopte = s->regs[IOMMU_BASE] << 4; + addr &= ~s->iostart; + iopte += (addr >> (IOMMU_PAGE_SHIFT - 2)) & ~3; + ret = ldl_be_phys(iopte); + trace_sun4m_iommu_page_get_flags(pa, iopte, ret); + return ret; +} + +static hwaddr iommu_translate_pa(hwaddr addr, + uint32_t pte) +{ + hwaddr pa; + + pa = ((pte & IOPTE_PAGE) << 4) + (addr & ~IOMMU_PAGE_MASK); + trace_sun4m_iommu_translate_pa(addr, pa, pte); + return pa; +} + +static void iommu_bad_addr(IOMMUState *s, hwaddr addr, + int is_write) +{ + trace_sun4m_iommu_bad_addr(addr); + s->regs[IOMMU_AFSR] = IOMMU_AFSR_ERR | IOMMU_AFSR_LE | IOMMU_AFSR_RESV | + IOMMU_AFSR_FAV; + if (!is_write) + s->regs[IOMMU_AFSR] |= IOMMU_AFSR_RD; + s->regs[IOMMU_AFAR] = addr; + qemu_irq_raise(s->irq); +} + +void sparc_iommu_memory_rw(void *opaque, hwaddr addr, + uint8_t *buf, int len, int is_write) +{ + int l; + uint32_t flags; + hwaddr page, phys_addr; + + while (len > 0) { + page = addr & IOMMU_PAGE_MASK; + l = (page + IOMMU_PAGE_SIZE) - addr; + if (l > len) + l = len; + flags = iommu_page_get_flags(opaque, page); + if (!(flags & IOPTE_VALID)) { + iommu_bad_addr(opaque, page, is_write); + return; + } + phys_addr = iommu_translate_pa(addr, flags); + if (is_write) { + if (!(flags & IOPTE_WRITE)) { + iommu_bad_addr(opaque, page, is_write); + return; + } + cpu_physical_memory_write(phys_addr, buf, l); + } else { + cpu_physical_memory_read(phys_addr, buf, l); + } + len -= l; + buf += l; + addr += l; + } +} + +static const VMStateDescription vmstate_iommu = { + .name ="iommu", + .version_id = 2, + .minimum_version_id = 2, + .minimum_version_id_old = 2, + .fields = (VMStateField []) { + VMSTATE_UINT32_ARRAY(regs, IOMMUState, IOMMU_NREGS), + VMSTATE_UINT64(iostart, IOMMUState), + VMSTATE_END_OF_LIST() + } +}; + +static void iommu_reset(DeviceState *d) +{ + IOMMUState *s = container_of(d, IOMMUState, busdev.qdev); + + memset(s->regs, 0, IOMMU_NREGS * 4); + s->iostart = 0; + s->regs[IOMMU_CTRL] = s->version; + s->regs[IOMMU_ARBEN] = IOMMU_MID; + s->regs[IOMMU_AFSR] = IOMMU_AFSR_RESV; + s->regs[IOMMU_AER] = IOMMU_AER_EN_P0_ARB | IOMMU_AER_EN_P1_ARB; + s->regs[IOMMU_MASK_ID] = IOMMU_TS_MASK; +} + +static int iommu_init1(SysBusDevice *dev) +{ + IOMMUState *s = FROM_SYSBUS(IOMMUState, dev); + + sysbus_init_irq(dev, &s->irq); + + memory_region_init_io(&s->iomem, &iommu_mem_ops, s, "iommu", + IOMMU_NREGS * sizeof(uint32_t)); + sysbus_init_mmio(dev, &s->iomem); + + return 0; +} + +static Property iommu_properties[] = { + DEFINE_PROP_HEX32("version", IOMMUState, version, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void iommu_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); + + k->init = iommu_init1; + dc->reset = iommu_reset; + dc->vmsd = &vmstate_iommu; + dc->props = iommu_properties; +} + +static const TypeInfo iommu_info = { + .name = "iommu", + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(IOMMUState), + .class_init = iommu_class_init, +}; + +static void iommu_register_types(void) +{ + type_register_static(&iommu_info); +} + +type_init(iommu_register_types) |