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@@ -160,38 +160,38 @@ enum {
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enum dma_ch_state
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{
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- RST = 1,
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- STOPPED = 2,
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- RUNNING = 4
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+ RST = 1,
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+ STOPPED = 2,
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+ RUNNING = 4
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};
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struct fs_dma_channel
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{
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- qemu_irq irq;
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- struct etraxfs_dma_client *client;
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+ qemu_irq irq;
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+ struct etraxfs_dma_client *client;
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- /* Internal status. */
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- int stream_cmd_src;
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- enum dma_ch_state state;
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+ /* Internal status. */
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+ int stream_cmd_src;
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+ enum dma_ch_state state;
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- unsigned int input : 1;
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- unsigned int eol : 1;
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+ unsigned int input : 1;
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+ unsigned int eol : 1;
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- struct dma_descr_group current_g;
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- struct dma_descr_context current_c;
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- struct dma_descr_data current_d;
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+ struct dma_descr_group current_g;
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+ struct dma_descr_context current_c;
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+ struct dma_descr_data current_d;
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- /* Control registers. */
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- uint32_t regs[DMA_REG_MAX];
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+ /* Control registers. */
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+ uint32_t regs[DMA_REG_MAX];
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};
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struct fs_dma_ctrl
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{
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- MemoryRegion mmio;
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- int nr_channels;
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- struct fs_dma_channel *channels;
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+ MemoryRegion mmio;
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+ int nr_channels;
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+ struct fs_dma_channel *channels;
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- QEMUBH *bh;
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+ QEMUBH *bh;
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};
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static void DMA_run(void *opaque);
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@@ -199,72 +199,72 @@ static int channel_out_run(struct fs_dma_ctrl *ctrl, int c);
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static inline uint32_t channel_reg(struct fs_dma_ctrl *ctrl, int c, int reg)
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{
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- return ctrl->channels[c].regs[reg];
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+ return ctrl->channels[c].regs[reg];
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}
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static inline int channel_stopped(struct fs_dma_ctrl *ctrl, int c)
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{
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- return channel_reg(ctrl, c, RW_CFG) & 2;
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+ return channel_reg(ctrl, c, RW_CFG) & 2;
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}
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static inline int channel_en(struct fs_dma_ctrl *ctrl, int c)
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{
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- return (channel_reg(ctrl, c, RW_CFG) & 1)
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- && ctrl->channels[c].client;
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+ return (channel_reg(ctrl, c, RW_CFG) & 1)
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+ && ctrl->channels[c].client;
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}
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static inline int fs_channel(hwaddr addr)
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{
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- /* Every channel has a 0x2000 ctrl register map. */
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- return addr >> 13;
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+ /* Every channel has a 0x2000 ctrl register map. */
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+ return addr >> 13;
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}
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#ifdef USE_THIS_DEAD_CODE
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static void channel_load_g(struct fs_dma_ctrl *ctrl, int c)
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{
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- hwaddr addr = channel_reg(ctrl, c, RW_GROUP);
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+ hwaddr addr = channel_reg(ctrl, c, RW_GROUP);
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- /* Load and decode. FIXME: handle endianness. */
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+ /* Load and decode. FIXME: handle endianness. */
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cpu_physical_memory_read(addr, &ctrl->channels[c].current_g,
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sizeof(ctrl->channels[c].current_g));
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}
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static void dump_c(int ch, struct dma_descr_context *c)
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{
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- printf("%s ch=%d\n", __func__, ch);
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- printf("next=%x\n", c->next);
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- printf("saved_data=%x\n", c->saved_data);
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- printf("saved_data_buf=%x\n", c->saved_data_buf);
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- printf("eol=%x\n", (uint32_t) c->eol);
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+ printf("%s ch=%d\n", __func__, ch);
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+ printf("next=%x\n", c->next);
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+ printf("saved_data=%x\n", c->saved_data);
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+ printf("saved_data_buf=%x\n", c->saved_data_buf);
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+ printf("eol=%x\n", (uint32_t) c->eol);
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}
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static void dump_d(int ch, struct dma_descr_data *d)
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{
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- printf("%s ch=%d\n", __func__, ch);
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- printf("next=%x\n", d->next);
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- printf("buf=%x\n", d->buf);
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- printf("after=%x\n", d->after);
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- printf("intr=%x\n", (uint32_t) d->intr);
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- printf("out_eop=%x\n", (uint32_t) d->out_eop);
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- printf("in_eop=%x\n", (uint32_t) d->in_eop);
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- printf("eol=%x\n", (uint32_t) d->eol);
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+ printf("%s ch=%d\n", __func__, ch);
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+ printf("next=%x\n", d->next);
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+ printf("buf=%x\n", d->buf);
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+ printf("after=%x\n", d->after);
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+ printf("intr=%x\n", (uint32_t) d->intr);
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+ printf("out_eop=%x\n", (uint32_t) d->out_eop);
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+ printf("in_eop=%x\n", (uint32_t) d->in_eop);
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+ printf("eol=%x\n", (uint32_t) d->eol);
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}
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#endif
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static void channel_load_c(struct fs_dma_ctrl *ctrl, int c)
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{
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- hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
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+ hwaddr addr = channel_reg(ctrl, c, RW_GROUP_DOWN);
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- /* Load and decode. FIXME: handle endianness. */
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+ /* Load and decode. FIXME: handle endianness. */
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cpu_physical_memory_read(addr, &ctrl->channels[c].current_c,
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sizeof(ctrl->channels[c].current_c));
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- D(dump_c(c, &ctrl->channels[c].current_c));
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- /* I guess this should update the current pos. */
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- ctrl->channels[c].regs[RW_SAVED_DATA] =
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- (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data;
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- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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- (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data_buf;
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+ D(dump_c(c, &ctrl->channels[c].current_c));
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+ /* I guess this should update the current pos. */
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+ ctrl->channels[c].regs[RW_SAVED_DATA] =
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+ (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data;
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+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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+ (uint32_t)(unsigned long)ctrl->channels[c].current_c.saved_data_buf;
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}
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static void channel_load_d(struct fs_dma_ctrl *ctrl, int c)
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@@ -303,273 +303,273 @@ static void channel_store_d(struct fs_dma_ctrl *ctrl, int c)
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static inline void channel_stop(struct fs_dma_ctrl *ctrl, int c)
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{
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- /* FIXME: */
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+ /* FIXME: */
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}
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static inline void channel_start(struct fs_dma_ctrl *ctrl, int c)
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{
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- if (ctrl->channels[c].client)
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- {
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- ctrl->channels[c].eol = 0;
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- ctrl->channels[c].state = RUNNING;
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- if (!ctrl->channels[c].input)
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- channel_out_run(ctrl, c);
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- } else
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- printf("WARNING: starting DMA ch %d with no client\n", c);
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+ if (ctrl->channels[c].client)
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+ {
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+ ctrl->channels[c].eol = 0;
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+ ctrl->channels[c].state = RUNNING;
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+ if (!ctrl->channels[c].input)
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+ channel_out_run(ctrl, c);
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+ } else
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+ printf("WARNING: starting DMA ch %d with no client\n", c);
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- qemu_bh_schedule_idle(ctrl->bh);
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+ qemu_bh_schedule_idle(ctrl->bh);
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}
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static void channel_continue(struct fs_dma_ctrl *ctrl, int c)
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{
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- if (!channel_en(ctrl, c)
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- || channel_stopped(ctrl, c)
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- || ctrl->channels[c].state != RUNNING
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- /* Only reload the current data descriptor if it has eol set. */
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- || !ctrl->channels[c].current_d.eol) {
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- D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n",
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- c, ctrl->channels[c].state,
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- channel_stopped(ctrl, c),
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- channel_en(ctrl,c),
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- ctrl->channels[c].eol));
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- D(dump_d(c, &ctrl->channels[c].current_d));
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- return;
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- }
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-
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- /* Reload the current descriptor. */
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- channel_load_d(ctrl, c);
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-
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- /* If the current descriptor cleared the eol flag and we had already
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- reached eol state, do the continue. */
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- if (!ctrl->channels[c].current_d.eol && ctrl->channels[c].eol) {
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- D(printf("continue %d ok %x\n", c,
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- ctrl->channels[c].current_d.next));
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- ctrl->channels[c].regs[RW_SAVED_DATA] =
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- (uint32_t)(unsigned long)ctrl->channels[c].current_d.next;
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- channel_load_d(ctrl, c);
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- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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- (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
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-
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- channel_start(ctrl, c);
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- }
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- ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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- (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
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+ if (!channel_en(ctrl, c)
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+ || channel_stopped(ctrl, c)
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+ || ctrl->channels[c].state != RUNNING
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+ /* Only reload the current data descriptor if it has eol set. */
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+ || !ctrl->channels[c].current_d.eol) {
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+ D(printf("continue failed ch=%d state=%d stopped=%d en=%d eol=%d\n",
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+ c, ctrl->channels[c].state,
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+ channel_stopped(ctrl, c),
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+ channel_en(ctrl,c),
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+ ctrl->channels[c].eol));
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+ D(dump_d(c, &ctrl->channels[c].current_d));
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+ return;
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+ }
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+
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+ /* Reload the current descriptor. */
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+ channel_load_d(ctrl, c);
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+
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+ /* If the current descriptor cleared the eol flag and we had already
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+ reached eol state, do the continue. */
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+ if (!ctrl->channels[c].current_d.eol && ctrl->channels[c].eol) {
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+ D(printf("continue %d ok %x\n", c,
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+ ctrl->channels[c].current_d.next));
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+ ctrl->channels[c].regs[RW_SAVED_DATA] =
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+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.next;
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+ channel_load_d(ctrl, c);
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+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
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+
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+ channel_start(ctrl, c);
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+ }
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+ ctrl->channels[c].regs[RW_SAVED_DATA_BUF] =
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+ (uint32_t)(unsigned long)ctrl->channels[c].current_d.buf;
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}
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static void channel_stream_cmd(struct fs_dma_ctrl *ctrl, int c, uint32_t v)
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{
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- unsigned int cmd = v & ((1 << 10) - 1);
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+ unsigned int cmd = v & ((1 << 10) - 1);
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- D(printf("%s ch=%d cmd=%x\n",
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- __func__, c, cmd));
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- if (cmd & regk_dma_load_d) {
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- channel_load_d(ctrl, c);
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- if (cmd & regk_dma_burst)
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- channel_start(ctrl, c);
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- }
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+ D(printf("%s ch=%d cmd=%x\n",
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+ __func__, c, cmd));
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+ if (cmd & regk_dma_load_d) {
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+ channel_load_d(ctrl, c);
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+ if (cmd & regk_dma_burst)
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+ channel_start(ctrl, c);
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+ }
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- if (cmd & regk_dma_load_c) {
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- channel_load_c(ctrl, c);
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- }
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+ if (cmd & regk_dma_load_c) {
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+ channel_load_c(ctrl, c);
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+ }
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}
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static void channel_update_irq(struct fs_dma_ctrl *ctrl, int c)
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{
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- D(printf("%s %d\n", __func__, c));
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- ctrl->channels[c].regs[R_INTR] &=
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- ~(ctrl->channels[c].regs[RW_ACK_INTR]);
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+ D(printf("%s %d\n", __func__, c));
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+ ctrl->channels[c].regs[R_INTR] &=
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+ ~(ctrl->channels[c].regs[RW_ACK_INTR]);
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- ctrl->channels[c].regs[R_MASKED_INTR] =
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- ctrl->channels[c].regs[R_INTR]
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- & ctrl->channels[c].regs[RW_INTR_MASK];
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+ ctrl->channels[c].regs[R_MASKED_INTR] =
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+ ctrl->channels[c].regs[R_INTR]
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+ & ctrl->channels[c].regs[RW_INTR_MASK];
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- D(printf("%s: chan=%d masked_intr=%x\n", __func__,
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- c,
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- ctrl->channels[c].regs[R_MASKED_INTR]));
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+ D(printf("%s: chan=%d masked_intr=%x\n", __func__,
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+ c,
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+ ctrl->channels[c].regs[R_MASKED_INTR]));
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- qemu_set_irq(ctrl->channels[c].irq,
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- !!ctrl->channels[c].regs[R_MASKED_INTR]);
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+ qemu_set_irq(ctrl->channels[c].irq,
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+ !!ctrl->channels[c].regs[R_MASKED_INTR]);
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}
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static int channel_out_run(struct fs_dma_ctrl *ctrl, int c)
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{
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- uint32_t len;
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- uint32_t saved_data_buf;
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- unsigned char buf[2 * 1024];
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-
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- struct dma_context_metadata meta;
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- bool send_context = true;
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-
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- if (ctrl->channels[c].eol)
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- return 0;
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-
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- do {
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- bool out_eop;
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- D(printf("ch=%d buf=%x after=%x\n",
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- c,
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- (uint32_t)ctrl->channels[c].current_d.buf,
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- (uint32_t)ctrl->channels[c].current_d.after));
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-
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- if (send_context) {
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- if (ctrl->channels[c].client->client.metadata_push) {
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- meta.metadata = ctrl->channels[c].current_d.md;
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- ctrl->channels[c].client->client.metadata_push(
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- ctrl->channels[c].client->client.opaque,
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- &meta);
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- }
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- send_context = false;
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- }
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-
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- channel_load_d(ctrl, c);
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- saved_data_buf = channel_reg(ctrl, c, RW_SAVED_DATA_BUF);
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- len = (uint32_t)(unsigned long)
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- ctrl->channels[c].current_d.after;
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- len -= saved_data_buf;
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-
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- if (len > sizeof buf)
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- len = sizeof buf;
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- cpu_physical_memory_read (saved_data_buf, buf, len);
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-
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- out_eop = ((saved_data_buf + len) ==
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- ctrl->channels[c].current_d.after) &&
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- ctrl->channels[c].current_d.out_eop;
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-
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- D(printf("channel %d pushes %x %u bytes eop=%u\n", c,
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- saved_data_buf, len, out_eop));
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-
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- if (ctrl->channels[c].client->client.push) {
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- if (len > 0) {
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- ctrl->channels[c].client->client.push(
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- ctrl->channels[c].client->client.opaque,
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- buf, len, out_eop);
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- }
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- } else {
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- printf("WARNING: DMA ch%d dataloss,"
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- " no attached client.\n", c);
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- }
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-
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- saved_data_buf += len;
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-
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- if (saved_data_buf == (uint32_t)(unsigned long)
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- ctrl->channels[c].current_d.after) {
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- /* Done. Step to next. */
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- if (ctrl->channels[c].current_d.out_eop) {
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- send_context = true;
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- }
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- if (ctrl->channels[c].current_d.intr) {
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- /* data intr. */
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|
|
- 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;
|
|
|
+ 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) {
|
|
|
+ if (len > 0) {
|
|
|
+ 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;
|
|
|
+ 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;
|
|
|
+ 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)
|
|
@@ -581,33 +581,33 @@ static uint32_t dma_rinvalid (void *opaque, hwaddr addr)
|
|
|
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=" HWADDR_FMT_plx "\n",
|
|
|
- __func__, c, addr));
|
|
|
- break;
|
|
|
- }
|
|
|
- return r;
|
|
|
+ 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=" HWADDR_FMT_plx "\n",
|
|
|
+ __func__, c, addr));
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return r;
|
|
|
}
|
|
|
|
|
|
static void
|
|
@@ -619,133 +619,133 @@ dma_winvalid (void *opaque, hwaddr addr, uint32_t value)
|
|
|
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;
|
|
|
+ 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)
|
|
|
+ uint64_t val64, unsigned int size)
|
|
|
{
|
|
|
- struct fs_dma_ctrl *ctrl = opaque;
|
|
|
- uint32_t value = val64;
|
|
|
- int c;
|
|
|
+ struct fs_dma_ctrl *ctrl = opaque;
|
|
|
+ uint32_t value = val64;
|
|
|
+ int c;
|
|
|
|
|
|
- if (size != 4) {
|
|
|
- dma_winvalid(opaque, addr, value);
|
|
|
- }
|
|
|
+ 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 " HWADDR_FMT_plx "\n",
|
|
|
- __func__, c, addr));
|
|
|
- break;
|
|
|
- }
|
|
|
+ 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 " HWADDR_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
|
|
|
- }
|
|
|
+ .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;
|
|
|
+ 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)
|
|
|
+ void *buf, int len, int eop)
|
|
|
{
|
|
|
- return channel_in_process(client->ctrl, client->channel,
|
|
|
- buf, len, 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;
|
|
|
+ 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 etraxfs_dma_client *cl)
|
|
|
{
|
|
|
- struct fs_dma_ctrl *ctrl = opaque;
|
|
|
- cl->ctrl = ctrl;
|
|
|
- cl->channel = c;
|
|
|
- ctrl->channels[c].client = cl;
|
|
|
+ struct fs_dma_ctrl *ctrl = opaque;
|
|
|
+ cl->ctrl = ctrl;
|
|
|
+ cl->channel = c;
|
|
|
+ ctrl->channels[c].client = cl;
|
|
|
}
|
|
|
|
|
|
|
|
@@ -763,18 +763,18 @@ static void DMA_run(void *opaque)
|
|
|
|
|
|
void *etraxfs_dmac_init(hwaddr base, int nr_channels)
|
|
|
{
|
|
|
- struct fs_dma_ctrl *ctrl = NULL;
|
|
|
+ struct fs_dma_ctrl *ctrl = NULL;
|
|
|
|
|
|
- ctrl = g_malloc0(sizeof *ctrl);
|
|
|
+ ctrl = g_malloc0(sizeof *ctrl);
|
|
|
|
|
|
- ctrl->bh = qemu_bh_new(DMA_run, ctrl);
|
|
|
+ ctrl->bh = qemu_bh_new(DMA_run, ctrl);
|
|
|
|
|
|
- ctrl->nr_channels = nr_channels;
|
|
|
- ctrl->channels = g_malloc0(sizeof ctrl->channels[0] * nr_channels);
|
|
|
+ ctrl->nr_channels = nr_channels;
|
|
|
+ ctrl->channels = g_malloc0(sizeof ctrl->channels[0] * nr_channels);
|
|
|
|
|
|
- memory_region_init_io(&ctrl->mmio, NULL, &dma_ops, ctrl, "etraxfs-dma",
|
|
|
- nr_channels * 0x2000);
|
|
|
- memory_region_add_subregion(get_system_memory(), base, &ctrl->mmio);
|
|
|
+ memory_region_init_io(&ctrl->mmio, NULL, &dma_ops, ctrl, "etraxfs-dma",
|
|
|
+ nr_channels * 0x2000);
|
|
|
+ memory_region_add_subregion(get_system_memory(), base, &ctrl->mmio);
|
|
|
|
|
|
- return ctrl;
|
|
|
+ return ctrl;
|
|
|
}
|