drivers/dma/pl330.c

318  * One cycle of DMAC operation.
370 /* A DMAC Thread */
376 	/* Parent DMAC */
377 	struct pl330_dmac *dmac;  member
393 	/* In the DMAC pool */
433 	/* Pointer to the DMAC that manages this channel,
435 	 * As the parent, this DMAC also provides descriptors
438 	struct pl330_dmac *dmac;  member
444 	 * Hardware channel thread of PL330 DMAC. NULL if the channel is
469 	/* Pool of descriptors available for the DMAC's channels */
495 	/* State of DMAC operation */
500 	/* Peripheral channels connected to this DMAC */
546 	/* Hook to attach to DMAC's list of reqs with due callback */
566 	return thrd->dmac->manager == thrd;  in is_manager()
572 	return (thrd->dmac->pcfg.mode & DMAC_MODE_NS) ? true : false;  in _manager_ns()
658 	cnt--; /* DMAC increments by 1 internally */  in _emit_LP()
873 	void __iomem *regs = thrd->dmac->base;  in _until_dmac_idle()
893 	void __iomem *regs = thrd->dmac->base;  in _execute_DBGINSN()
898 		dev_err(thrd->dmac->ddma.dev, "DMAC halted!\n");  in _execute_DBGINSN()
918 	void __iomem *regs = thrd->dmac->base;  in _state()
976 	void __iomem *regs = thrd->dmac->base;  in _stop()
1003 	void __iomem *regs = thrd->dmac->base;  in _trigger()
1040 		dev_info(thrd->dmac->ddma.dev, "%s:%d Recipe for ABORT!\n",  in _trigger()
1477 	struct pl330_dmac *pl330 = thrd->dmac;  in pl330_submit_req()
1500 		dev_info(thrd->dmac->ddma.dev, "%s:%d\n",  in pl330_submit_req()
1508 		dev_info(thrd->dmac->ddma.dev,  in pl330_submit_req()
1588 	/* The DMAC itself gone nuts */  in pl330_dotask()
1744 	struct pl330_dmac *pl330 = thrd->dmac;  in _alloc_event()
1797 	struct pl330_dmac *pl330 = thrd->dmac;  in _free_event()
1820  * by the client driver the make best use of the DMAC
1866 	struct pl330_dmac *pl330 = thrd->dmac;  in _reset_thread()
1899 		thrd->dmac = pl330;  in dmac_alloc_threads()
1907 	thrd->dmac = pl330;  in dmac_alloc_threads()
1935 		dev_err(pl330->ddma.dev, "%s:%d Can't to create channels for DMAC!\n",  in dmac_alloc_resources()
1951 	/* Check if we can handle this DMAC */  in pl330_add()
1958 	/* Read the configuration of the DMAC */  in pl330_add()
1979 	/* Allocate resources needed by the DMAC */  in pl330_add()
1982 		dev_err(pl330->ddma.dev, "Unable to create channels for DMAC\n");  in pl330_add()
2016 	/* Free DMAC resources */  in pl330_del()
2057 			/* QFull or DMAC Dying */  in fill_queue()
2062 			dev_err(pch->dmac->ddma.dev, "%s:%d Bad Desc(%d)\n",  in fill_queue()
2090 		spin_lock(&pch->thread->dmac->lock);  in pl330_tasklet()
2092 		spin_unlock(&pch->thread->dmac->lock);  in pl330_tasklet()
2097 		spin_lock(&pch->thread->dmac->lock);  in pl330_tasklet()
2099 		spin_unlock(&pch->thread->dmac->lock);  in pl330_tasklet()
2115 				spin_lock(&pch->thread->dmac->lock);  in pl330_tasklet()
2117 				spin_unlock(&pch->thread->dmac->lock);  in pl330_tasklet()
2122 			list_move_tail(&desc->node, &pch->dmac->desc_pool);  in pl330_tasklet()
2137 		pm_runtime_mark_last_busy(pch->dmac->ddma.dev);  in pl330_tasklet()
2138 		pm_runtime_put_autosuspend(pch->dmac->ddma.dev);  in pl330_tasklet()
2165 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_alloc_chan_resources()
2187  * We need the data direction between the DMAC (the dma-mapping "device") and
2257 			pch->dmac->quirks);  in pl330_config_write()
2264 			pch->dmac->quirks);  in pl330_config_write()
2285 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_terminate_all()
2334 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_pause()
2359 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_free_chan_resources()
2364 	pm_runtime_get_sync(pch->dmac->ddma.dev);  in pl330_free_chan_resources()
2371 		list_splice_tail_init(&pch->work_list, &pch->dmac->desc_pool);  in pl330_free_chan_resources()
2374 	pm_runtime_mark_last_busy(pch->dmac->ddma.dev);  in pl330_free_chan_resources()
2375 	pm_runtime_put_autosuspend(pch->dmac->ddma.dev);  in pl330_free_chan_resources()
2383 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_get_current_xferred_count()
2384 	void __iomem *regs = thrd->dmac->base;  in pl330_get_current_xferred_count()
2396 	pm_runtime_mark_last_busy(pch->dmac->ddma.dev);  in pl330_get_current_xferred_count()
2425 	spin_lock(&pch->thread->dmac->lock);  in pl330_tx_status()
2471 	spin_unlock(&pch->thread->dmac->lock);  in pl330_tx_status()
2494 		pm_runtime_get_sync(pch->dmac->ddma.dev);  in pl330_issue_pending()
2548 /* Returns the number of descriptors added to the DMAC pool */
2598 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_get_desc()
2602 	/* Pluck one desc from the pool of DMAC */  in pl330_get_desc()
2605 	/* If the DMAC pool is empty, alloc new */  in pl330_get_desc()
2623 	desc->rqcfg.pcfg = &pch->dmac->pcfg;  in pl330_get_desc()
2645 		dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",  in __pl330_prep_dma_memcpy()
2669 	struct pl330_dmac *pl330 = pch->dmac;  in get_burst_len()
2690 	struct pl330_dmac *pl330 = pch->dmac;  in pl330_prep_dma_cyclic()
2699 		dev_err(pch->dmac->ddma.dev, "%s:%d Invalid dma direction\n",  in pl330_prep_dma_cyclic()
2714 			dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",  in pl330_prep_dma_cyclic()
2786 	pl330 = pch->dmac;  in pl330_prep_dma_memcpy()
2870 			struct pl330_dmac *pl330 = pch->dmac;  in pl330_prep_slave_sg()
2872 			dev_err(pch->dmac->ddma.dev,  in pl330_prep_slave_sg()
3021 	/* Allocate a new DMAC and its Channels */  in pl330_probe()
3117 		pch->dmac = pl330;  in pl330_probe()
3120 		/* Add the channel to the DMAC list */  in pl330_probe()
3149 		dev_err(&adev->dev, "unable to register DMAC\n");  in pl330_probe()
3170 		"Loaded driver for PL330 DMAC-%x\n", adev->periphid);  in pl330_probe()
3184 	/* Idle the DMAC */  in pl330_probe()
3227 	/* Idle the DMAC */  in pl330_remove()
3273 MODULE_DESCRIPTION("API Driver for PL330 DMAC");