Lines Matching refs:pl330
1378 struct pl330_dmac *pl330 = thrd->dmac; in pl330_submit_req() local
1385 if (pl330->state == DYING in pl330_submit_req()
1386 || pl330->dmac_tbd.reset_chan & (1 << thrd->id)) { in pl330_submit_req()
1394 desc->peri >= pl330->pcfg.num_peri) { in pl330_submit_req()
1401 spin_lock_irqsave(&pl330->lock, flags); in pl330_submit_req()
1426 if (ret > pl330->mcbufsz / 2) { in pl330_submit_req()
1427 dev_info(pl330->ddma.dev, "%s:%d Trying increasing mcbufsz\n", in pl330_submit_req()
1441 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_submit_req()
1471 struct pl330_dmac *pl330 = (struct pl330_dmac *) data; in pl330_dotask() local
1475 spin_lock_irqsave(&pl330->lock, flags); in pl330_dotask()
1478 if (pl330->dmac_tbd.reset_dmac) { in pl330_dotask()
1479 pl330->state = DYING; in pl330_dotask()
1481 pl330->dmac_tbd.reset_mngr = true; in pl330_dotask()
1483 pl330->dmac_tbd.reset_dmac = false; in pl330_dotask()
1486 if (pl330->dmac_tbd.reset_mngr) { in pl330_dotask()
1487 _stop(pl330->manager); in pl330_dotask()
1489 pl330->dmac_tbd.reset_chan = (1 << pl330->pcfg.num_chan) - 1; in pl330_dotask()
1491 pl330->dmac_tbd.reset_mngr = false; in pl330_dotask()
1494 for (i = 0; i < pl330->pcfg.num_chan; i++) { in pl330_dotask()
1496 if (pl330->dmac_tbd.reset_chan & (1 << i)) { in pl330_dotask()
1497 struct pl330_thread *thrd = &pl330->channels[i]; in pl330_dotask()
1498 void __iomem *regs = pl330->base; in pl330_dotask()
1508 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_dotask()
1511 spin_lock_irqsave(&pl330->lock, flags); in pl330_dotask()
1518 pl330->dmac_tbd.reset_chan &= ~(1 << i); in pl330_dotask()
1522 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_dotask()
1528 static int pl330_update(struct pl330_dmac *pl330) in pl330_update() argument
1536 regs = pl330->base; in pl330_update()
1538 spin_lock_irqsave(&pl330->lock, flags); in pl330_update()
1542 pl330->dmac_tbd.reset_mngr = true; in pl330_update()
1544 pl330->dmac_tbd.reset_mngr = false; in pl330_update()
1546 val = readl(regs + FSC) & ((1 << pl330->pcfg.num_chan) - 1); in pl330_update()
1547 pl330->dmac_tbd.reset_chan |= val; in pl330_update()
1550 while (i < pl330->pcfg.num_chan) { in pl330_update()
1552 dev_info(pl330->ddma.dev, in pl330_update()
1556 _stop(&pl330->channels[i]); in pl330_update()
1564 if (pl330->pcfg.num_events < 32 in pl330_update()
1565 && val & ~((1 << pl330->pcfg.num_events) - 1)) { in pl330_update()
1566 pl330->dmac_tbd.reset_dmac = true; in pl330_update()
1567 dev_err(pl330->ddma.dev, "%s:%d Unexpected!\n", __func__, in pl330_update()
1573 for (ev = 0; ev < pl330->pcfg.num_events; ev++) { in pl330_update()
1585 id = pl330->events[ev]; in pl330_update()
1587 thrd = &pl330->channels[id]; in pl330_update()
1603 list_add_tail(&descdone->rqd, &pl330->req_done); in pl330_update()
1608 list_for_each_entry_safe(descdone, tmp, &pl330->req_done, rqd) { in pl330_update()
1610 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_update()
1612 spin_lock_irqsave(&pl330->lock, flags); in pl330_update()
1616 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_update()
1618 if (pl330->dmac_tbd.reset_dmac in pl330_update()
1619 || pl330->dmac_tbd.reset_mngr in pl330_update()
1620 || pl330->dmac_tbd.reset_chan) { in pl330_update()
1622 tasklet_schedule(&pl330->tasks); in pl330_update()
1631 struct pl330_dmac *pl330 = thrd->dmac; in _alloc_event() local
1634 for (ev = 0; ev < pl330->pcfg.num_events; ev++) in _alloc_event()
1635 if (pl330->events[ev] == -1) { in _alloc_event()
1636 pl330->events[ev] = thrd->id; in _alloc_event()
1643 static bool _chan_ns(const struct pl330_dmac *pl330, int i) in _chan_ns() argument
1645 return pl330->pcfg.irq_ns & (1 << i); in _chan_ns()
1651 static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330) in pl330_request_channel() argument
1657 if (pl330->state == DYING) in pl330_request_channel()
1660 chans = pl330->pcfg.num_chan; in pl330_request_channel()
1662 spin_lock_irqsave(&pl330->lock, flags); in pl330_request_channel()
1665 thrd = &pl330->channels[i]; in pl330_request_channel()
1667 _chan_ns(pl330, i))) { in pl330_request_channel()
1681 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_request_channel()
1689 struct pl330_dmac *pl330 = thrd->dmac; in _free_event() local
1692 if (ev >= 0 && ev < pl330->pcfg.num_events in _free_event()
1693 && pl330->events[ev] == thrd->id) in _free_event()
1694 pl330->events[ev] = -1; in _free_event()
1699 struct pl330_dmac *pl330; in pl330_release_channel() local
1710 pl330 = thrd->dmac; in pl330_release_channel()
1712 spin_lock_irqsave(&pl330->lock, flags); in pl330_release_channel()
1715 spin_unlock_irqrestore(&pl330->lock, flags); in pl330_release_channel()
1721 static void read_dmac_config(struct pl330_dmac *pl330) in read_dmac_config() argument
1723 void __iomem *regs = pl330->base; in read_dmac_config()
1728 pl330->pcfg.data_bus_width = 8 * (1 << val); in read_dmac_config()
1732 pl330->pcfg.data_buf_dep = val + 1; in read_dmac_config()
1737 pl330->pcfg.num_chan = val; in read_dmac_config()
1743 pl330->pcfg.num_peri = val; in read_dmac_config()
1744 pl330->pcfg.peri_ns = readl(regs + CR4); in read_dmac_config()
1746 pl330->pcfg.num_peri = 0; in read_dmac_config()
1751 pl330->pcfg.mode |= DMAC_MODE_NS; in read_dmac_config()
1753 pl330->pcfg.mode &= ~DMAC_MODE_NS; in read_dmac_config()
1758 pl330->pcfg.num_events = val; in read_dmac_config()
1760 pl330->pcfg.irq_ns = readl(regs + CR3); in read_dmac_config()
1765 struct pl330_dmac *pl330 = thrd->dmac; in _reset_thread() local
1767 thrd->req[0].mc_cpu = pl330->mcode_cpu in _reset_thread()
1768 + (thrd->id * pl330->mcbufsz); in _reset_thread()
1769 thrd->req[0].mc_bus = pl330->mcode_bus in _reset_thread()
1770 + (thrd->id * pl330->mcbufsz); in _reset_thread()
1774 + pl330->mcbufsz / 2; in _reset_thread()
1776 + pl330->mcbufsz / 2; in _reset_thread()
1782 static int dmac_alloc_threads(struct pl330_dmac *pl330) in dmac_alloc_threads() argument
1784 int chans = pl330->pcfg.num_chan; in dmac_alloc_threads()
1789 pl330->channels = kzalloc((1 + chans) * sizeof(*thrd), in dmac_alloc_threads()
1791 if (!pl330->channels) in dmac_alloc_threads()
1796 thrd = &pl330->channels[i]; in dmac_alloc_threads()
1798 thrd->dmac = pl330; in dmac_alloc_threads()
1804 thrd = &pl330->channels[chans]; in dmac_alloc_threads()
1806 thrd->dmac = pl330; in dmac_alloc_threads()
1808 pl330->manager = thrd; in dmac_alloc_threads()
1813 static int dmac_alloc_resources(struct pl330_dmac *pl330) in dmac_alloc_resources() argument
1815 int chans = pl330->pcfg.num_chan; in dmac_alloc_resources()
1822 pl330->mcode_cpu = dma_alloc_coherent(pl330->ddma.dev, in dmac_alloc_resources()
1823 chans * pl330->mcbufsz, in dmac_alloc_resources()
1824 &pl330->mcode_bus, GFP_KERNEL); in dmac_alloc_resources()
1825 if (!pl330->mcode_cpu) { in dmac_alloc_resources()
1826 dev_err(pl330->ddma.dev, "%s:%d Can't allocate memory!\n", in dmac_alloc_resources()
1831 ret = dmac_alloc_threads(pl330); in dmac_alloc_resources()
1833 dev_err(pl330->ddma.dev, "%s:%d Can't to create channels for DMAC!\n", in dmac_alloc_resources()
1835 dma_free_coherent(pl330->ddma.dev, in dmac_alloc_resources()
1836 chans * pl330->mcbufsz, in dmac_alloc_resources()
1837 pl330->mcode_cpu, pl330->mcode_bus); in dmac_alloc_resources()
1844 static int pl330_add(struct pl330_dmac *pl330) in pl330_add() argument
1849 regs = pl330->base; in pl330_add()
1852 if ((pl330->pcfg.periph_id & 0xfffff) != PERIPH_ID_VAL) { in pl330_add()
1853 dev_err(pl330->ddma.dev, "PERIPH_ID 0x%x !\n", in pl330_add()
1854 pl330->pcfg.periph_id); in pl330_add()
1859 read_dmac_config(pl330); in pl330_add()
1861 if (pl330->pcfg.num_events == 0) { in pl330_add()
1862 dev_err(pl330->ddma.dev, "%s:%d Can't work without events!\n", in pl330_add()
1867 spin_lock_init(&pl330->lock); in pl330_add()
1869 INIT_LIST_HEAD(&pl330->req_done); in pl330_add()
1872 if (!pl330->mcbufsz) in pl330_add()
1873 pl330->mcbufsz = MCODE_BUFF_PER_REQ * 2; in pl330_add()
1876 for (i = 0; i < pl330->pcfg.num_events; i++) in pl330_add()
1877 pl330->events[i] = -1; in pl330_add()
1880 ret = dmac_alloc_resources(pl330); in pl330_add()
1882 dev_err(pl330->ddma.dev, "Unable to create channels for DMAC\n"); in pl330_add()
1886 tasklet_init(&pl330->tasks, pl330_dotask, (unsigned long) pl330); in pl330_add()
1888 pl330->state = INIT; in pl330_add()
1893 static int dmac_free_threads(struct pl330_dmac *pl330) in dmac_free_threads() argument
1899 for (i = 0; i < pl330->pcfg.num_chan; i++) { in dmac_free_threads()
1900 thrd = &pl330->channels[i]; in dmac_free_threads()
1905 kfree(pl330->channels); in dmac_free_threads()
1910 static void pl330_del(struct pl330_dmac *pl330) in pl330_del() argument
1912 pl330->state = UNINIT; in pl330_del()
1914 tasklet_kill(&pl330->tasks); in pl330_del()
1917 dmac_free_threads(pl330); in pl330_del()
1919 dma_free_coherent(pl330->ddma.dev, in pl330_del()
1920 pl330->pcfg.num_chan * pl330->mcbufsz, pl330->mcode_cpu, in pl330_del()
1921 pl330->mcode_bus); in pl330_del()
2058 struct pl330_dmac *pl330 = ofdma->of_dma_data; in of_dma_pl330_xlate() local
2061 if (!pl330) in of_dma_pl330_xlate()
2068 if (chan_id >= pl330->num_peripherals) in of_dma_pl330_xlate()
2071 return dma_get_slave_channel(&pl330->peripherals[chan_id].chan); in of_dma_pl330_xlate()
2077 struct pl330_dmac *pl330 = pch->dmac; in pl330_alloc_chan_resources() local
2085 pch->thread = pl330_request_channel(pl330); in pl330_alloc_chan_resources()
2127 struct pl330_dmac *pl330 = pch->dmac; in pl330_terminate_all() local
2130 pm_runtime_get_sync(pl330->ddma.dev); in pl330_terminate_all()
2132 spin_lock(&pl330->lock); in pl330_terminate_all()
2134 spin_unlock(&pl330->lock); in pl330_terminate_all()
2151 list_splice_tail_init(&pch->submitted_list, &pl330->desc_pool); in pl330_terminate_all()
2152 list_splice_tail_init(&pch->work_list, &pl330->desc_pool); in pl330_terminate_all()
2153 list_splice_tail_init(&pch->completed_list, &pl330->desc_pool); in pl330_terminate_all()
2155 pm_runtime_mark_last_busy(pl330->ddma.dev); in pl330_terminate_all()
2156 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_terminate_all()
2171 struct pl330_dmac *pl330 = pch->dmac; in pl330_pause() local
2174 pm_runtime_get_sync(pl330->ddma.dev); in pl330_pause()
2177 spin_lock(&pl330->lock); in pl330_pause()
2179 spin_unlock(&pl330->lock); in pl330_pause()
2182 pm_runtime_mark_last_busy(pl330->ddma.dev); in pl330_pause()
2183 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_pause()
2213 struct pl330_dmac *pl330 = pch->dmac; in pl330_get_current_xferred_count() local
2217 pm_runtime_get_sync(pl330->ddma.dev); in pl330_get_current_xferred_count()
2227 pm_runtime_put_autosuspend(pl330->ddma.dev); in pl330_get_current_xferred_count()
2357 static int add_desc(struct pl330_dmac *pl330, gfp_t flg, int count) in add_desc() argument
2367 spin_lock_irqsave(&pl330->pool_lock, flags); in add_desc()
2371 list_add_tail(&desc[i].node, &pl330->desc_pool); in add_desc()
2374 spin_unlock_irqrestore(&pl330->pool_lock, flags); in add_desc()
2379 static struct dma_pl330_desc *pluck_desc(struct pl330_dmac *pl330) in pluck_desc() argument
2384 spin_lock_irqsave(&pl330->pool_lock, flags); in pluck_desc()
2386 if (!list_empty(&pl330->desc_pool)) { in pluck_desc()
2387 desc = list_entry(pl330->desc_pool.next, in pluck_desc()
2396 spin_unlock_irqrestore(&pl330->pool_lock, flags); in pluck_desc()
2403 struct pl330_dmac *pl330 = pch->dmac; in pl330_get_desc() local
2408 desc = pluck_desc(pl330); in pl330_get_desc()
2412 if (!add_desc(pl330, GFP_ATOMIC, 1)) in pl330_get_desc()
2416 desc = pluck_desc(pl330); in pl330_get_desc()
2476 struct pl330_dmac *pl330 = pch->dmac; in get_burst_len() local
2479 burst_len = pl330->pcfg.data_bus_width / 8; in get_burst_len()
2480 burst_len *= pl330->pcfg.data_buf_dep / pl330->pcfg.num_chan; in get_burst_len()
2503 struct pl330_dmac *pl330 = pch->dmac; in pl330_prep_dma_cyclic() local
2526 spin_lock_irqsave(&pl330->pool_lock, flags); in pl330_prep_dma_cyclic()
2531 list_move_tail(&desc->node, &pl330->desc_pool); in pl330_prep_dma_cyclic()
2534 list_move_tail(&first->node, &pl330->desc_pool); in pl330_prep_dma_cyclic()
2536 spin_unlock_irqrestore(&pl330->pool_lock, flags); in pl330_prep_dma_cyclic()
2587 struct pl330_dmac *pl330 = pch->dmac; in pl330_prep_dma_memcpy() local
2602 burst = pl330->pcfg.data_bus_width / 8; in pl330_prep_dma_memcpy()
2620 if (desc->rqcfg.brst_size * 8 < pl330->pcfg.data_bus_width) in pl330_prep_dma_memcpy()
2631 static void __pl330_giveback_desc(struct pl330_dmac *pl330, in __pl330_giveback_desc() argument
2640 spin_lock_irqsave(&pl330->pool_lock, flags); in __pl330_giveback_desc()
2645 list_move_tail(&desc->node, &pl330->desc_pool); in __pl330_giveback_desc()
2648 list_move_tail(&first->node, &pl330->desc_pool); in __pl330_giveback_desc()
2650 spin_unlock_irqrestore(&pl330->pool_lock, flags); in __pl330_giveback_desc()
2675 struct pl330_dmac *pl330 = pch->dmac; in pl330_prep_slave_sg() local
2680 __pl330_giveback_desc(pl330, first); in pl330_prep_slave_sg()
2773 struct pl330_dmac *pl330; in pl330_probe() local
2787 pl330 = devm_kzalloc(&adev->dev, sizeof(*pl330), GFP_KERNEL); in pl330_probe()
2788 if (!pl330) { in pl330_probe()
2793 pd = &pl330->ddma; in pl330_probe()
2796 pl330->mcbufsz = pdat ? pdat->mcbuf_sz : 0; in pl330_probe()
2799 pl330->base = devm_ioremap_resource(&adev->dev, res); in pl330_probe()
2800 if (IS_ERR(pl330->base)) in pl330_probe()
2801 return PTR_ERR(pl330->base); in pl330_probe()
2803 amba_set_drvdata(adev, pl330); in pl330_probe()
2810 dev_name(&adev->dev), pl330); in pl330_probe()
2818 pcfg = &pl330->pcfg; in pl330_probe()
2821 ret = pl330_add(pl330); in pl330_probe()
2825 INIT_LIST_HEAD(&pl330->desc_pool); in pl330_probe()
2826 spin_lock_init(&pl330->pool_lock); in pl330_probe()
2829 if (!add_desc(pl330, GFP_KERNEL, NR_DEFAULT_DESC)) in pl330_probe()
2840 pl330->num_peripherals = num_chan; in pl330_probe()
2842 pl330->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL); in pl330_probe()
2843 if (!pl330->peripherals) { in pl330_probe()
2850 pch = &pl330->peripherals[i]; in pl330_probe()
2862 pch->dmac = pl330; in pl330_probe()
2902 of_dma_pl330_xlate, pl330); in pl330_probe()
2909 adev->dev.dma_parms = &pl330->dma_parms; in pl330_probe()
2936 list_for_each_entry_safe(pch, _p, &pl330->ddma.channels, in pl330_probe()
2949 pl330_del(pl330); in pl330_probe()
2956 struct pl330_dmac *pl330 = amba_get_drvdata(adev); in pl330_remove() local
2959 pm_runtime_get_noresume(pl330->ddma.dev); in pl330_remove()
2964 dma_async_device_unregister(&pl330->ddma); in pl330_remove()
2967 list_for_each_entry_safe(pch, _p, &pl330->ddma.channels, in pl330_remove()
2980 pl330_del(pl330); in pl330_remove()