Lines Matching full:pl330
274 /* Populated by the PL330 core driver for DMA API driver's info */
290 * The PL330 core does not modify this and uses the last
402 * to the PL330 core. Not more than two descriptors
414 * by PL330 core
444 * Hardware channel thread of PL330 DMAC. NULL if the channel is
476 /* ioremap'ed address of PL330 registers. */
478 /* Populated by the PL330 core driver during pl330_add */
514 .quirk = "arm,pl330-broken-no-flushp",
518 .quirk = "arm,pl330-periph-burst",
530 /* Xfer for PL330 core */
1185 static inline int _ldst_peripheral(struct pl330_dmac *pl330, in _ldst_peripheral() argument
1196 if (!(pl330->quirks & PL330_QUIRK_BROKEN_NO_FLUSHP)) in _ldst_peripheral()
1209 static int _bursts(struct pl330_dmac *pl330, unsigned dry_run, u8 buf[], in _bursts() argument
1215 if (pl330->quirks & PL330_QUIRK_PERIPH_BURST) in _bursts()
1221 off += _ldst_peripheral(pl330, dry_run, &buf[off], pxs, cyc, in _bursts()
1243 static int _dregs(struct pl330_dmac *pl330, unsigned int dry_run, u8 buf[], in _dregs() argument
1271 off += _ldst_peripheral(pl330, dry_run, &buf[off], pxs, 1, in _dregs()
1290 static inline int _loop(struct pl330_dmac *pl330, unsigned dry_run, u8 buf[], in _loop() argument
1298 return _bursts(pl330, dry_run, buf, pxs, 1); in _loop()
1316 szbrst = _bursts(pl330, 1, buf, pxs, 1); in _loop()
1348 off += _bursts(pl330, dry_run, &buf[off], pxs, cyc); in _loop()
1371 static inline int _setup_loops(struct pl330_dmac *pl330, in _setup_loops() argument
1384 off += _loop(pl330, dry_run, &buf[off], &c, pxs); in _setup_loops()
1387 off += _dregs(pl330, dry_run, &buf[off], pxs, num_dregs); in _setup_loops()
1392 static inline int _setup_xfer(struct pl330_dmac *pl330, in _setup_xfer() argument
1405 off += _setup_loops(pl330, dry_run, &buf[off], pxs); in _setup_xfer()
1414 static int _setup_req(struct pl330_dmac *pl330, unsigned dry_run, in _setup_req() argument
1427 off += _setup_xfer(pl330, dry_run, &buf[off], pxs); in _setup_req()
1477 struct pl330_dmac *pl330 = thrd->dmac; in pl330_submit_req() local
1498 if (pl330->state == DYING in pl330_submit_req()
1499 || pl330->dmac_tbd.reset_chan & (1 << thrd->id)) { in pl330_submit_req()
1507 desc->peri >= pl330->pcfg.num_peri) { in pl330_submit_req()
1514 spin_lock_irqsave(&pl330->lock, flags); in pl330_submit_req()
1535 ret = _setup_req(pl330, 1, thrd, idx, &xs); in pl330_submit_req()
1539 if (ret > pl330->mcbufsz / 2) { in pl330_submit_req()
1540 dev_info(pl330->ddma.dev, "%s:%d Try increasing mcbufsz (%i/%i)\n", in pl330_submit_req()
1541 __func__, __LINE__, ret, pl330->mcbufsz / 2); in pl330_submit_req()
1549 _setup_req(pl330, 0, thrd, idx, &xs); in pl330_submit_req()
1554 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_submit_req()
1584 struct pl330_dmac *pl330 = from_tasklet(pl330, t, tasks); in pl330_dotask() local
1588 spin_lock_irqsave(&pl330->lock, flags); in pl330_dotask()
1591 if (pl330->dmac_tbd.reset_dmac) { in pl330_dotask()
1592 pl330->state = DYING; in pl330_dotask()
1594 pl330->dmac_tbd.reset_mngr = true; in pl330_dotask()
1596 pl330->dmac_tbd.reset_dmac = false; in pl330_dotask()
1599 if (pl330->dmac_tbd.reset_mngr) { in pl330_dotask()
1600 _stop(pl330->manager); in pl330_dotask()
1602 pl330->dmac_tbd.reset_chan = (1 << pl330->pcfg.num_chan) - 1; in pl330_dotask()
1604 pl330->dmac_tbd.reset_mngr = false; in pl330_dotask()
1607 for (i = 0; i < pl330->pcfg.num_chan; i++) { in pl330_dotask()
1609 if (pl330->dmac_tbd.reset_chan & (1 << i)) { in pl330_dotask()
1610 struct pl330_thread *thrd = &pl330->channels[i]; in pl330_dotask()
1611 void __iomem *regs = pl330->base; in pl330_dotask()
1621 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_dotask()
1624 spin_lock_irqsave(&pl330->lock, flags); in pl330_dotask()
1631 pl330->dmac_tbd.reset_chan &= ~(1 << i); in pl330_dotask()
1635 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_dotask()
1641 static int pl330_update(struct pl330_dmac *pl330) in pl330_update() argument
1649 regs = pl330->base; in pl330_update()
1651 spin_lock_irqsave(&pl330->lock, flags); in pl330_update()
1655 pl330->dmac_tbd.reset_mngr = true; in pl330_update()
1657 pl330->dmac_tbd.reset_mngr = false; in pl330_update()
1659 val = readl(regs + FSC) & ((1 << pl330->pcfg.num_chan) - 1); in pl330_update()
1660 pl330->dmac_tbd.reset_chan |= val; in pl330_update()
1663 while (i < pl330->pcfg.num_chan) { in pl330_update()
1665 dev_info(pl330->ddma.dev, in pl330_update()
1669 _stop(&pl330->channels[i]); in pl330_update()
1677 if (pl330->pcfg.num_events < 32 in pl330_update()
1678 && val & ~((1 << pl330->pcfg.num_events) - 1)) { in pl330_update()
1679 pl330->dmac_tbd.reset_dmac = true; in pl330_update()
1680 dev_err(pl330->ddma.dev, "%s:%d Unexpected!\n", __func__, in pl330_update()
1686 for (ev = 0; ev < pl330->pcfg.num_events; ev++) { in pl330_update()
1698 id = pl330->events[ev]; in pl330_update()
1700 thrd = &pl330->channels[id]; in pl330_update()
1716 list_add_tail(&descdone->rqd, &pl330->req_done); in pl330_update()
1721 while (!list_empty(&pl330->req_done)) { in pl330_update()
1722 descdone = list_first_entry(&pl330->req_done, in pl330_update()
1725 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_update()
1727 spin_lock_irqsave(&pl330->lock, flags); in pl330_update()
1731 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_update()
1733 if (pl330->dmac_tbd.reset_dmac in pl330_update()
1734 || pl330->dmac_tbd.reset_mngr in pl330_update()
1735 || pl330->dmac_tbd.reset_chan) { in pl330_update()
1737 tasklet_schedule(&pl330->tasks); in pl330_update()
1746 struct pl330_dmac *pl330 = thrd->dmac; in _alloc_event() local
1749 for (ev = 0; ev < pl330->pcfg.num_events; ev++) in _alloc_event()
1750 if (pl330->events[ev] == -1) { in _alloc_event()
1751 pl330->events[ev] = thrd->id; in _alloc_event()
1758 static bool _chan_ns(const struct pl330_dmac *pl330, int i) in _chan_ns() argument
1760 return pl330->pcfg.irq_ns & (1 << i); in _chan_ns()
1766 static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330) in pl330_request_channel() argument
1771 if (pl330->state == DYING) in pl330_request_channel()
1774 chans = pl330->pcfg.num_chan; in pl330_request_channel()
1777 thrd = &pl330->channels[i]; in pl330_request_channel()
1779 _chan_ns(pl330, i))) { in pl330_request_channel()
1799 struct pl330_dmac *pl330 = thrd->dmac; in _free_event() local
1802 if (ev >= 0 && ev < pl330->pcfg.num_events in _free_event()
1803 && pl330->events[ev] == thrd->id) in _free_event()
1804 pl330->events[ev] = -1; in _free_event()
1821 /* Initialize the structure for PL330 configuration, that can be used
1824 static void read_dmac_config(struct pl330_dmac *pl330) in read_dmac_config() argument
1826 void __iomem *regs = pl330->base; in read_dmac_config()
1831 pl330->pcfg.data_bus_width = 8 * (1 << val); in read_dmac_config()
1835 pl330->pcfg.data_buf_dep = val + 1; in read_dmac_config()
1840 pl330->pcfg.num_chan = val; in read_dmac_config()
1846 pl330->pcfg.num_peri = val; in read_dmac_config()
1847 pl330->pcfg.peri_ns = readl(regs + CR4); in read_dmac_config()
1849 pl330->pcfg.num_peri = 0; in read_dmac_config()
1854 pl330->pcfg.mode |= DMAC_MODE_NS; in read_dmac_config()
1856 pl330->pcfg.mode &= ~DMAC_MODE_NS; in read_dmac_config()
1861 pl330->pcfg.num_events = val; in read_dmac_config()
1863 pl330->pcfg.irq_ns = readl(regs + CR3); in read_dmac_config()
1868 struct pl330_dmac *pl330 = thrd->dmac; in _reset_thread() local
1870 thrd->req[0].mc_cpu = pl330->mcode_cpu in _reset_thread()
1871 + (thrd->id * pl330->mcbufsz); in _reset_thread()
1872 thrd->req[0].mc_bus = pl330->mcode_bus in _reset_thread()
1873 + (thrd->id * pl330->mcbufsz); in _reset_thread()
1877 + pl330->mcbufsz / 2; in _reset_thread()
1879 + pl330->mcbufsz / 2; in _reset_thread()
1885 static int dmac_alloc_threads(struct pl330_dmac *pl330) in dmac_alloc_threads() argument
1887 int chans = pl330->pcfg.num_chan; in dmac_alloc_threads()
1892 pl330->channels = kcalloc(1 + chans, sizeof(*thrd), in dmac_alloc_threads()
1894 if (!pl330->channels) in dmac_alloc_threads()
1899 thrd = &pl330->channels[i]; in dmac_alloc_threads()
1901 thrd->dmac = pl330; in dmac_alloc_threads()
1907 thrd = &pl330->channels[chans]; in dmac_alloc_threads()
1909 thrd->dmac = pl330; in dmac_alloc_threads()
1911 pl330->manager = thrd; in dmac_alloc_threads()
1916 static int dmac_alloc_resources(struct pl330_dmac *pl330) in dmac_alloc_resources() argument
1918 int chans = pl330->pcfg.num_chan; in dmac_alloc_resources()
1925 pl330->mcode_cpu = dma_alloc_attrs(pl330->ddma.dev, in dmac_alloc_resources()
1926 chans * pl330->mcbufsz, in dmac_alloc_resources()
1927 &pl330->mcode_bus, GFP_KERNEL, in dmac_alloc_resources()
1929 if (!pl330->mcode_cpu) { in dmac_alloc_resources()
1930 dev_err(pl330->ddma.dev, "%s:%d Can't allocate memory!\n", in dmac_alloc_resources()
1935 ret = dmac_alloc_threads(pl330); in dmac_alloc_resources()
1937 dev_err(pl330->ddma.dev, "%s:%d Can't to create channels for DMAC!\n", in dmac_alloc_resources()
1939 dma_free_attrs(pl330->ddma.dev, in dmac_alloc_resources()
1940 chans * pl330->mcbufsz, in dmac_alloc_resources()
1941 pl330->mcode_cpu, pl330->mcode_bus, in dmac_alloc_resources()
1949 static int pl330_add(struct pl330_dmac *pl330) in pl330_add() argument
1954 if ((pl330->pcfg.periph_id & 0xfffff) != PERIPH_ID_VAL) { in pl330_add()
1955 dev_err(pl330->ddma.dev, "PERIPH_ID 0x%x !\n", in pl330_add()
1956 pl330->pcfg.periph_id); in pl330_add()
1961 read_dmac_config(pl330); in pl330_add()
1963 if (pl330->pcfg.num_events == 0) { in pl330_add()
1964 dev_err(pl330->ddma.dev, "%s:%d Can't work without events!\n", in pl330_add()
1969 spin_lock_init(&pl330->lock); in pl330_add()
1971 INIT_LIST_HEAD(&pl330->req_done); in pl330_add()
1974 if (!pl330->mcbufsz) in pl330_add()
1975 pl330->mcbufsz = MCODE_BUFF_PER_REQ * 2; in pl330_add()
1978 for (i = 0; i < pl330->pcfg.num_events; i++) in pl330_add()
1979 pl330->events[i] = -1; in pl330_add()
1982 ret = dmac_alloc_resources(pl330); in pl330_add()
1984 dev_err(pl330->ddma.dev, "Unable to create channels for DMAC\n"); in pl330_add()
1988 tasklet_setup(&pl330->tasks, pl330_dotask); in pl330_add()
1990 pl330->state = INIT; in pl330_add()
1995 static int dmac_free_threads(struct pl330_dmac *pl330) in dmac_free_threads() argument
2001 for (i = 0; i < pl330->pcfg.num_chan; i++) { in dmac_free_threads()
2002 thrd = &pl330->channels[i]; in dmac_free_threads()
2007 kfree(pl330->channels); in dmac_free_threads()
2012 static void pl330_del(struct pl330_dmac *pl330) in pl330_del() argument
2014 pl330->state = UNINIT; in pl330_del()
2016 tasklet_kill(&pl330->tasks); in pl330_del()
2019 dmac_free_threads(pl330); in pl330_del()
2021 dma_free_attrs(pl330->ddma.dev, in pl330_del()
2022 pl330->pcfg.num_chan * pl330->mcbufsz, pl330->mcode_cpu, in pl330_del()
2023 pl330->mcode_bus, DMA_ATTR_PRIVILEGED); in pl330_del()
2098 /* Make sure the PL330 Channel thread is active */ in pl330_tasklet()
2148 struct pl330_dmac *pl330 = ofdma->of_dma_data; in of_dma_pl330_xlate() local
2151 if (!pl330) in of_dma_pl330_xlate()
2158 if (chan_id >= pl330->num_peripherals) in of_dma_pl330_xlate()
2161 return dma_get_slave_channel(&pl330->peripherals[chan_id].chan); in of_dma_pl330_xlate()
2167 struct pl330_dmac *pl330 = pch->dmac; in pl330_alloc_chan_resources() local
2170 spin_lock_irqsave(&pl330->lock, flags); in pl330_alloc_chan_resources()
2175 pch->thread = pl330_request_channel(pl330); in pl330_alloc_chan_resources()
2177 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_alloc_chan_resources()
2183 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_alloc_chan_resources()
2287 struct pl330_dmac *pl330 = pch->dmac; in pl330_terminate_all() local
2290 pm_runtime_get_sync(pl330->ddma.dev); in pl330_terminate_all()
2293 spin_lock(&pl330->lock); in pl330_terminate_all()
2298 spin_unlock(&pl330->lock); in pl330_terminate_all()
2314 list_splice_tail_init(&pch->submitted_list, &pl330->desc_pool); in pl330_terminate_all()
2315 list_splice_tail_init(&pch->work_list, &pl330->desc_pool); in pl330_terminate_all()
2316 list_splice_tail_init(&pch->completed_list, &pl330->desc_pool); in pl330_terminate_all()
2318 pm_runtime_mark_last_busy(pl330->ddma.dev); in pl330_terminate_all()
2320 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_terminate_all()
2321 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_terminate_all()
2336 struct pl330_dmac *pl330 = pch->dmac; in pl330_pause() local
2340 pm_runtime_get_sync(pl330->ddma.dev); in pl330_pause()
2343 spin_lock(&pl330->lock); in pl330_pause()
2345 spin_unlock(&pl330->lock); in pl330_pause()
2352 pm_runtime_mark_last_busy(pl330->ddma.dev); in pl330_pause()
2353 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_pause()
2361 struct pl330_dmac *pl330 = pch->dmac; in pl330_free_chan_resources() local
2367 spin_lock_irqsave(&pl330->lock, flags); in pl330_free_chan_resources()
2375 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_free_chan_resources()
2385 struct pl330_dmac *pl330 = pch->dmac; in pl330_get_current_xferred_count() local
2389 pm_runtime_get_sync(pl330->ddma.dev); in pl330_get_current_xferred_count()
2399 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_get_current_xferred_count()
2599 struct pl330_dmac *pl330 = pch->dmac; in pl330_get_desc() local
2604 desc = pluck_desc(&pl330->desc_pool, &pl330->pool_lock); in pl330_get_desc()
2670 struct pl330_dmac *pl330 = pch->dmac; in get_burst_len() local
2673 burst_len = pl330->pcfg.data_bus_width / 8; in get_burst_len()
2674 burst_len *= pl330->pcfg.data_buf_dep / pl330->pcfg.num_chan; in get_burst_len()
2691 struct pl330_dmac *pl330 = pch->dmac; in pl330_prep_dma_cyclic() local
2721 spin_lock_irqsave(&pl330->pool_lock, iflags); in pl330_prep_dma_cyclic()
2726 list_move_tail(&desc->node, &pl330->desc_pool); in pl330_prep_dma_cyclic()
2729 list_move_tail(&first->node, &pl330->desc_pool); in pl330_prep_dma_cyclic()
2731 spin_unlock_irqrestore(&pl330->pool_lock, iflags); in pl330_prep_dma_cyclic()
2782 struct pl330_dmac *pl330; in pl330_prep_dma_memcpy() local
2788 pl330 = pch->dmac; in pl330_prep_dma_memcpy()
2799 burst = pl330->pcfg.data_bus_width / 8; in pl330_prep_dma_memcpy()
2818 if (burst * 8 < pl330->pcfg.data_bus_width) in pl330_prep_dma_memcpy()
2828 static void __pl330_giveback_desc(struct pl330_dmac *pl330, in __pl330_giveback_desc() argument
2837 spin_lock_irqsave(&pl330->pool_lock, flags); in __pl330_giveback_desc()
2842 list_move_tail(&desc->node, &pl330->desc_pool); in __pl330_giveback_desc()
2845 list_move_tail(&first->node, &pl330->desc_pool); in __pl330_giveback_desc()
2847 spin_unlock_irqrestore(&pl330->pool_lock, flags); in __pl330_giveback_desc()
2874 struct pl330_dmac *pl330 = pch->dmac; in pl330_prep_slave_sg() local
2879 __pl330_giveback_desc(pl330, first); in pl330_prep_slave_sg()
2930 struct pl330_dmac *pl330 = s->private; in pl330_debugfs_show() local
2933 chans = pl330->pcfg.num_chan; in pl330_debugfs_show()
2934 pchs = pl330->num_peripherals; in pl330_debugfs_show()
2936 seq_puts(s, "PL330 physical channels:\n"); in pl330_debugfs_show()
2940 struct pl330_thread *thrd = &pl330->channels[ch]; in pl330_debugfs_show()
2944 struct dma_pl330_chan *pch = &pl330->peripherals[pr]; in pl330_debugfs_show()
2964 static inline void init_pl330_debugfs(struct pl330_dmac *pl330) in init_pl330_debugfs() argument
2966 debugfs_create_file(dev_name(pl330->ddma.dev), in init_pl330_debugfs()
2967 S_IFREG | 0444, NULL, pl330, in init_pl330_debugfs()
2971 static inline void init_pl330_debugfs(struct pl330_dmac *pl330) in init_pl330_debugfs() argument
3014 struct pl330_dmac *pl330; in pl330_probe() local
3027 pl330 = devm_kzalloc(&adev->dev, sizeof(*pl330), GFP_KERNEL); in pl330_probe()
3028 if (!pl330) in pl330_probe()
3031 pd = &pl330->ddma; in pl330_probe()
3034 pl330->mcbufsz = 0; in pl330_probe()
3039 pl330->quirks |= of_quirks[i].id; in pl330_probe()
3042 pl330->base = devm_ioremap_resource(&adev->dev, res); in pl330_probe()
3043 if (IS_ERR(pl330->base)) in pl330_probe()
3044 return PTR_ERR(pl330->base); in pl330_probe()
3046 amba_set_drvdata(adev, pl330); in pl330_probe()
3048 pl330->rstc = devm_reset_control_get_optional(&adev->dev, "dma"); in pl330_probe()
3049 if (IS_ERR(pl330->rstc)) { in pl330_probe()
3050 return dev_err_probe(&adev->dev, PTR_ERR(pl330->rstc), "Failed to get reset!\n"); in pl330_probe()
3052 ret = reset_control_deassert(pl330->rstc); in pl330_probe()
3059 pl330->rstc_ocp = devm_reset_control_get_optional(&adev->dev, "dma-ocp"); in pl330_probe()
3060 if (IS_ERR(pl330->rstc_ocp)) { in pl330_probe()
3061 return dev_err_probe(&adev->dev, PTR_ERR(pl330->rstc_ocp), in pl330_probe()
3064 ret = reset_control_deassert(pl330->rstc_ocp); in pl330_probe()
3076 dev_name(&adev->dev), pl330); in pl330_probe()
3084 pcfg = &pl330->pcfg; in pl330_probe()
3087 ret = pl330_add(pl330); in pl330_probe()
3091 INIT_LIST_HEAD(&pl330->desc_pool); in pl330_probe()
3092 spin_lock_init(&pl330->pool_lock); in pl330_probe()
3095 if (!add_desc(&pl330->desc_pool, &pl330->pool_lock, in pl330_probe()
3104 pl330->num_peripherals = num_chan; in pl330_probe()
3106 pl330->peripherals = kcalloc(num_chan, sizeof(*pch), GFP_KERNEL); in pl330_probe()
3107 if (!pl330->peripherals) { in pl330_probe()
3113 pch = &pl330->peripherals[i]; in pl330_probe()
3122 pch->dmac = pl330; in pl330_probe()
3160 of_dma_pl330_xlate, pl330); in pl330_probe()
3176 init_pl330_debugfs(pl330); in pl330_probe()
3178 "Loaded driver for PL330 DMAC-%x\n", adev->periphid); in pl330_probe()
3193 list_for_each_entry_safe(pch, _p, &pl330->ddma.channels, in pl330_probe()
3206 pl330_del(pl330); in pl330_probe()
3208 if (pl330->rstc_ocp) in pl330_probe()
3209 reset_control_assert(pl330->rstc_ocp); in pl330_probe()
3211 if (pl330->rstc) in pl330_probe()
3212 reset_control_assert(pl330->rstc); in pl330_probe()
3218 struct pl330_dmac *pl330 = amba_get_drvdata(adev); in pl330_remove() local
3222 pm_runtime_get_noresume(pl330->ddma.dev); in pl330_remove()
3230 devm_free_irq(&adev->dev, irq, pl330); in pl330_remove()
3233 dma_async_device_unregister(&pl330->ddma); in pl330_remove()
3236 list_for_each_entry_safe(pch, _p, &pl330->ddma.channels, in pl330_remove()
3249 pl330_del(pl330); in pl330_remove()
3251 if (pl330->rstc_ocp) in pl330_remove()
3252 reset_control_assert(pl330->rstc_ocp); in pl330_remove()
3254 if (pl330->rstc) in pl330_remove()
3255 reset_control_assert(pl330->rstc); in pl330_remove()
3271 .name = "dma-pl330",
3282 MODULE_DESCRIPTION("API Driver for PL330 DMAC");