Lines Matching +full:t8103 +full:- +full:pcie
1 // SPDX-License-Identifier: GPL-2.0-only
7 * Based on arm/arm-smmu/arm-ssmu.c and arm/arm-smmu-v3/arm-smmu-v3.c
10 * and on exynos-iommu.c
18 #include <linux/dma-mapping.h>
21 #include <linux/io-pgtable.h>
35 #include "dma-iommu.h"
145 #define DART_TCR(dart, sid) ((dart)->hw->tcr + ((sid) << 2))
147 #define DART_TTBR(dart, sid, idx) ((dart)->hw->ttbr + \
148 (((dart)->hw->ttbr_count * (sid)) << 2) + \
192 * @hw: SoC-specific hardware data
255 * @pgtbl_ops: pagetable ops allocated by io-pgtable
295 for (i = 0, stream_map = &(base)->stream_maps[0]; \
296 i < MAX_DARTS_PER_DEVICE && stream_map->dart; \
297 stream_map = &(base)->stream_maps[++i])
310 struct apple_dart *dart = stream_map->dart; in apple_dart_hw_enable_translation()
313 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) in apple_dart_hw_enable_translation()
314 writel(dart->hw->tcr_enabled, dart->regs + DART_TCR(dart, sid)); in apple_dart_hw_enable_translation()
319 struct apple_dart *dart = stream_map->dart; in apple_dart_hw_disable_dma()
322 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) in apple_dart_hw_disable_dma()
323 writel(dart->hw->tcr_disabled, dart->regs + DART_TCR(dart, sid)); in apple_dart_hw_disable_dma()
329 struct apple_dart *dart = stream_map->dart; in apple_dart_hw_enable_bypass()
332 WARN_ON(!stream_map->dart->supports_bypass); in apple_dart_hw_enable_bypass()
333 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) in apple_dart_hw_enable_bypass()
334 writel(dart->hw->tcr_bypass, in apple_dart_hw_enable_bypass()
335 dart->regs + DART_TCR(dart, sid)); in apple_dart_hw_enable_bypass()
341 struct apple_dart *dart = stream_map->dart; in apple_dart_hw_set_ttbr()
344 WARN_ON(paddr & ((1 << dart->hw->ttbr_shift) - 1)); in apple_dart_hw_set_ttbr()
345 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) in apple_dart_hw_set_ttbr()
346 writel(dart->hw->ttbr_valid | in apple_dart_hw_set_ttbr()
347 (paddr >> dart->hw->ttbr_shift) << dart->hw->ttbr_addr_field_shift, in apple_dart_hw_set_ttbr()
348 dart->regs + DART_TTBR(dart, sid, idx)); in apple_dart_hw_set_ttbr()
354 struct apple_dart *dart = stream_map->dart; in apple_dart_hw_clear_ttbr()
357 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) in apple_dart_hw_clear_ttbr()
358 writel(0, dart->regs + DART_TTBR(dart, sid, idx)); in apple_dart_hw_clear_ttbr()
366 for (i = 0; i < stream_map->dart->hw->ttbr_count; ++i) in apple_dart_hw_clear_all_ttbrs()
378 spin_lock_irqsave(&stream_map->dart->lock, flags); in apple_dart_t8020_hw_stream_command()
380 for (i = 0; i < BITS_TO_U32(stream_map->dart->num_streams); i++) in apple_dart_t8020_hw_stream_command()
381 writel(stream_map->sidmap[i], in apple_dart_t8020_hw_stream_command()
382 stream_map->dart->regs + DART_T8020_STREAM_SELECT + 4 * i); in apple_dart_t8020_hw_stream_command()
383 writel(command, stream_map->dart->regs + DART_T8020_STREAM_COMMAND); in apple_dart_t8020_hw_stream_command()
386 stream_map->dart->regs + DART_T8020_STREAM_COMMAND, command_reg, in apple_dart_t8020_hw_stream_command()
390 spin_unlock_irqrestore(&stream_map->dart->lock, flags); in apple_dart_t8020_hw_stream_command()
393 dev_err(stream_map->dart->dev, in apple_dart_t8020_hw_stream_command()
395 command, stream_map->sidmap[0]); in apple_dart_t8020_hw_stream_command()
406 struct apple_dart *dart = stream_map->dart; in apple_dart_t8110_hw_tlb_command()
411 spin_lock_irqsave(&dart->lock, flags); in apple_dart_t8110_hw_tlb_command()
413 for_each_set_bit(sid, stream_map->sidmap, dart->num_streams) { in apple_dart_t8110_hw_tlb_command()
416 writel(val, dart->regs + DART_T8110_TLB_CMD); in apple_dart_t8110_hw_tlb_command()
419 dart->regs + DART_T8110_TLB_CMD, val, in apple_dart_t8110_hw_tlb_command()
428 spin_unlock_irqrestore(&dart->lock, flags); in apple_dart_t8110_hw_tlb_command()
431 dev_err(stream_map->dart->dev, in apple_dart_t8110_hw_tlb_command()
460 config = readl(dart->regs + dart->hw->lock); in apple_dart_hw_reset()
461 if (config & dart->hw->lock_bit) { in apple_dart_hw_reset()
462 dev_err(dart->dev, "DART is locked down until reboot: %08x\n", in apple_dart_hw_reset()
464 return -EINVAL; in apple_dart_hw_reset()
469 bitmap_set(stream_map.sidmap, 0, dart->num_streams); in apple_dart_hw_reset()
474 for (i = 0; i < BITS_TO_U32(dart->num_streams); i++) in apple_dart_hw_reset()
475 writel(U32_MAX, dart->regs + dart->hw->enable_streams + 4 * i); in apple_dart_hw_reset()
478 writel(readl(dart->regs + dart->hw->error), dart->regs + dart->hw->error); in apple_dart_hw_reset()
480 if (dart->hw->type == DART_T8110) in apple_dart_hw_reset()
481 writel(0, dart->regs + DART_T8110_ERROR_MASK); in apple_dart_hw_reset()
483 return dart->hw->invalidate_tlb(&stream_map); in apple_dart_hw_reset()
493 stream_map.dart = domain_stream_map->dart; in apple_dart_domain_flush_tlb()
495 for (j = 0; j < BITS_TO_LONGS(stream_map.dart->num_streams); j++) in apple_dart_domain_flush_tlb()
496 stream_map.sidmap[j] = atomic_long_read(&domain_stream_map->sidmap[j]); in apple_dart_domain_flush_tlb()
498 stream_map.dart->hw->invalidate_tlb(&stream_map); in apple_dart_domain_flush_tlb()
524 struct io_pgtable_ops *ops = dart_domain->pgtbl_ops; in apple_dart_iova_to_phys()
529 return ops->iova_to_phys(ops, iova); in apple_dart_iova_to_phys()
538 struct io_pgtable_ops *ops = dart_domain->pgtbl_ops; in apple_dart_map_pages()
541 return -ENODEV; in apple_dart_map_pages()
543 return ops->map_pages(ops, iova, paddr, pgsize, pgcount, prot, gfp, in apple_dart_map_pages()
553 struct io_pgtable_ops *ops = dart_domain->pgtbl_ops; in apple_dart_unmap_pages()
555 return ops->unmap_pages(ops, iova, pgsize, pgcount, gather); in apple_dart_unmap_pages()
564 &io_pgtable_ops_to_pgtable(domain->pgtbl_ops)->cfg; in apple_dart_setup_translation()
566 for (i = 0; i < pgtbl_cfg->apple_dart_cfg.n_ttbrs; ++i) in apple_dart_setup_translation()
568 pgtbl_cfg->apple_dart_cfg.ttbr[i]); in apple_dart_setup_translation()
569 for (; i < stream_map->dart->hw->ttbr_count; ++i) in apple_dart_setup_translation()
573 stream_map->dart->hw->invalidate_tlb(stream_map); in apple_dart_setup_translation()
579 struct apple_dart *dart = cfg->stream_maps[0].dart; in apple_dart_finalize_domain()
584 if (dart->pgsize > PAGE_SIZE) in apple_dart_finalize_domain()
585 return -EINVAL; in apple_dart_finalize_domain()
587 mutex_lock(&dart_domain->init_lock); in apple_dart_finalize_domain()
589 if (dart_domain->finalized) in apple_dart_finalize_domain()
593 dart_domain->stream_maps[i].dart = cfg->stream_maps[i].dart; in apple_dart_finalize_domain()
594 for (j = 0; j < BITS_TO_LONGS(dart->num_streams); j++) in apple_dart_finalize_domain()
595 atomic_long_set(&dart_domain->stream_maps[i].sidmap[j], in apple_dart_finalize_domain()
596 cfg->stream_maps[i].sidmap[j]); in apple_dart_finalize_domain()
600 .pgsize_bitmap = dart->pgsize, in apple_dart_finalize_domain()
601 .ias = dart->ias, in apple_dart_finalize_domain()
602 .oas = dart->oas, in apple_dart_finalize_domain()
604 .iommu_dev = dart->dev, in apple_dart_finalize_domain()
607 dart_domain->pgtbl_ops = alloc_io_pgtable_ops(dart->hw->fmt, &pgtbl_cfg, in apple_dart_finalize_domain()
608 &dart_domain->domain); in apple_dart_finalize_domain()
609 if (!dart_domain->pgtbl_ops) { in apple_dart_finalize_domain()
610 ret = -ENOMEM; in apple_dart_finalize_domain()
614 dart_domain->domain.pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; in apple_dart_finalize_domain()
615 dart_domain->domain.geometry.aperture_start = 0; in apple_dart_finalize_domain()
616 dart_domain->domain.geometry.aperture_end = in apple_dart_finalize_domain()
617 (dma_addr_t)DMA_BIT_MASK(dart->ias); in apple_dart_finalize_domain()
618 dart_domain->domain.geometry.force_aperture = true; in apple_dart_finalize_domain()
620 dart_domain->finalized = true; in apple_dart_finalize_domain()
623 mutex_unlock(&dart_domain->init_lock); in apple_dart_finalize_domain()
636 return -EINVAL; in apple_dart_mod_streams()
642 for (j = 0; j < BITS_TO_LONGS(domain_maps[i].dart->num_streams); j++) { in apple_dart_mod_streams()
658 return apple_dart_mod_streams(domain->stream_maps, cfg->stream_maps, in apple_dart_domain_add_streams()
690 if (!cfg->supports_bypass) in apple_dart_attach_dev_identity()
691 return -EINVAL; in apple_dart_attach_dev_identity()
735 return ERR_PTR(-ENODEV); in apple_dart_probe_device()
739 dev, stream_map->dart->dev, in apple_dart_probe_device()
742 return &cfg->stream_maps[0].dart->iommu; in apple_dart_probe_device()
760 mutex_init(&dart_domain->init_lock); in apple_dart_domain_alloc_paging()
772 return &dart_domain->domain; in apple_dart_domain_alloc_paging()
779 free_io_pgtable_ops(dart_domain->pgtbl_ops); in apple_dart_domain_free()
788 struct platform_device *iommu_pdev = of_find_device_by_node(args->np); in apple_dart_of_xlate()
793 if (args->args_count != 1) in apple_dart_of_xlate()
794 return -EINVAL; in apple_dart_of_xlate()
795 sid = args->args[0]; in apple_dart_of_xlate()
800 return -ENOMEM; in apple_dart_of_xlate()
802 cfg->supports_bypass = true; in apple_dart_of_xlate()
806 cfg_dart = cfg->stream_maps[0].dart; in apple_dart_of_xlate()
808 if (cfg_dart->pgsize != dart->pgsize) in apple_dart_of_xlate()
809 return -EINVAL; in apple_dart_of_xlate()
812 cfg->supports_bypass &= dart->supports_bypass; in apple_dart_of_xlate()
815 if (cfg->stream_maps[i].dart == dart) { in apple_dart_of_xlate()
816 set_bit(sid, cfg->stream_maps[i].sidmap); in apple_dart_of_xlate()
821 if (!cfg->stream_maps[i].dart) { in apple_dart_of_xlate()
822 cfg->stream_maps[i].dart = dart; in apple_dart_of_xlate()
823 set_bit(sid, cfg->stream_maps[i].sidmap); in apple_dart_of_xlate()
828 return -EINVAL; in apple_dart_of_xlate()
842 for_each_set_bit(sid, stream_map->sidmap, stream_map->dart->num_streams) in apple_dart_release_group()
843 stream_map->dart->sid2group[sid] = NULL; in apple_dart_release_group()
855 * PCIe devices from the same bus across multiple DARTs such that we can in apple_dart_merge_master_cfg()
858 if (src->stream_maps[1].dart) in apple_dart_merge_master_cfg()
859 return -EINVAL; in apple_dart_merge_master_cfg()
860 if (dst->stream_maps[1].dart) in apple_dart_merge_master_cfg()
861 return -EINVAL; in apple_dart_merge_master_cfg()
862 if (src->stream_maps[0].dart != dst->stream_maps[0].dart) in apple_dart_merge_master_cfg()
863 return -EINVAL; in apple_dart_merge_master_cfg()
865 bitmap_or(dst->stream_maps[0].sidmap, in apple_dart_merge_master_cfg()
866 dst->stream_maps[0].sidmap, in apple_dart_merge_master_cfg()
867 src->stream_maps[0].sidmap, in apple_dart_merge_master_cfg()
868 dst->stream_maps[0].dart->num_streams); in apple_dart_merge_master_cfg()
879 struct iommu_group *res = ERR_PTR(-EINVAL); in apple_dart_device_group()
884 for_each_set_bit(sid, stream_map->sidmap, stream_map->dart->num_streams) { in apple_dart_device_group()
886 stream_map->dart->sid2group[sid]; in apple_dart_device_group()
889 res = ERR_PTR(-EINVAL); in apple_dart_device_group()
909 res = ERR_PTR(-ENOMEM); in apple_dart_device_group()
937 for_each_set_bit(sid, stream_map->sidmap, stream_map->dart->num_streams) in apple_dart_device_group()
938 stream_map->dart->sid2group[sid] = group; in apple_dart_device_group()
951 if (cfg->stream_maps[0].dart->pgsize > PAGE_SIZE) in apple_dart_def_domain_type()
953 if (!cfg->supports_bypass) in apple_dart_def_domain_type()
978 list_add_tail(®ion->list, head); in apple_dart_get_resv_regions()
1011 u32 error = readl(dart->regs + DART_T8020_ERROR); in apple_dart_t8020_irq()
1013 u32 addr_lo = readl(dart->regs + DART_T8020_ERROR_ADDR_LO); in apple_dart_t8020_irq()
1014 u32 addr_hi = readl(dart->regs + DART_T8020_ERROR_ADDR_HI); in apple_dart_t8020_irq()
1036 dart->dev, in apple_dart_t8020_irq()
1040 writel(error, dart->regs + DART_T8020_ERROR); in apple_dart_t8020_irq()
1048 u32 error = readl(dart->regs + DART_T8110_ERROR); in apple_dart_t8110_irq()
1050 u32 addr_lo = readl(dart->regs + DART_T8110_ERROR_ADDR_LO); in apple_dart_t8110_irq()
1051 u32 addr_hi = readl(dart->regs + DART_T8110_ERROR_ADDR_HI); in apple_dart_t8110_irq()
1075 dart->dev, in apple_dart_t8110_irq()
1079 writel(error, dart->regs + DART_T8110_ERROR); in apple_dart_t8110_irq()
1089 struct device *dev = &pdev->dev; in apple_dart_probe()
1093 return -ENOMEM; in apple_dart_probe()
1095 dart->dev = dev; in apple_dart_probe()
1096 dart->hw = of_device_get_match_data(dev); in apple_dart_probe()
1097 spin_lock_init(&dart->lock); in apple_dart_probe()
1099 dart->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res); in apple_dart_probe()
1100 if (IS_ERR(dart->regs)) in apple_dart_probe()
1101 return PTR_ERR(dart->regs); in apple_dart_probe()
1105 return -EINVAL; in apple_dart_probe()
1108 dart->irq = platform_get_irq(pdev, 0); in apple_dart_probe()
1109 if (dart->irq < 0) in apple_dart_probe()
1110 return -ENODEV; in apple_dart_probe()
1112 ret = devm_clk_bulk_get_all(dev, &dart->clks); in apple_dart_probe()
1115 dart->num_clks = ret; in apple_dart_probe()
1117 ret = clk_bulk_prepare_enable(dart->num_clks, dart->clks); in apple_dart_probe()
1121 dart_params[0] = readl(dart->regs + DART_PARAMS1); in apple_dart_probe()
1122 dart_params[1] = readl(dart->regs + DART_PARAMS2); in apple_dart_probe()
1123 dart->pgsize = 1 << FIELD_GET(DART_PARAMS1_PAGE_SHIFT, dart_params[0]); in apple_dart_probe()
1124 dart->supports_bypass = dart_params[1] & DART_PARAMS2_BYPASS_SUPPORT; in apple_dart_probe()
1126 switch (dart->hw->type) { in apple_dart_probe()
1129 dart->ias = 32; in apple_dart_probe()
1130 dart->oas = dart->hw->oas; in apple_dart_probe()
1131 dart->num_streams = dart->hw->max_sid_count; in apple_dart_probe()
1135 dart_params[2] = readl(dart->regs + DART_T8110_PARAMS3); in apple_dart_probe()
1136 dart_params[3] = readl(dart->regs + DART_T8110_PARAMS4); in apple_dart_probe()
1137 dart->ias = FIELD_GET(DART_T8110_PARAMS3_VA_WIDTH, dart_params[2]); in apple_dart_probe()
1138 dart->oas = FIELD_GET(DART_T8110_PARAMS3_PA_WIDTH, dart_params[2]); in apple_dart_probe()
1139 dart->num_streams = FIELD_GET(DART_T8110_PARAMS4_NUM_SIDS, dart_params[3]); in apple_dart_probe()
1143 if (dart->num_streams > DART_MAX_STREAMS) { in apple_dart_probe()
1144 dev_err(&pdev->dev, "Too many streams (%d > %d)\n", in apple_dart_probe()
1145 dart->num_streams, DART_MAX_STREAMS); in apple_dart_probe()
1146 ret = -EINVAL; in apple_dart_probe()
1154 ret = request_irq(dart->irq, dart->hw->irq_handler, IRQF_SHARED, in apple_dart_probe()
1155 "apple-dart fault handler", dart); in apple_dart_probe()
1161 ret = iommu_device_sysfs_add(&dart->iommu, dev, NULL, "apple-dart.%s", in apple_dart_probe()
1162 dev_name(&pdev->dev)); in apple_dart_probe()
1166 ret = iommu_device_register(&dart->iommu, &apple_dart_iommu_ops, dev); in apple_dart_probe()
1171 &pdev->dev, in apple_dart_probe()
1173 dart->pgsize, dart->num_streams, dart->supports_bypass, in apple_dart_probe()
1174 dart->pgsize > PAGE_SIZE); in apple_dart_probe()
1178 iommu_device_sysfs_remove(&dart->iommu); in apple_dart_probe()
1180 free_irq(dart->irq, dart); in apple_dart_probe()
1182 clk_bulk_disable_unprepare(dart->num_clks, dart->clks); in apple_dart_probe()
1192 free_irq(dart->irq, dart); in apple_dart_remove()
1194 iommu_device_unregister(&dart->iommu); in apple_dart_remove()
1195 iommu_device_sysfs_remove(&dart->iommu); in apple_dart_remove()
1197 clk_bulk_disable_unprepare(dart->num_clks, dart->clks); in apple_dart_remove()
1308 for (sid = 0; sid < dart->num_streams; sid++) { in apple_dart_suspend()
1309 dart->save_tcr[sid] = readl(dart->regs + DART_TCR(dart, sid)); in apple_dart_suspend()
1310 for (idx = 0; idx < dart->hw->ttbr_count; idx++) in apple_dart_suspend()
1311 dart->save_ttbr[sid][idx] = in apple_dart_suspend()
1312 readl(dart->regs + DART_TTBR(dart, sid, idx)); in apple_dart_suspend()
1330 for (sid = 0; sid < dart->num_streams; sid++) { in apple_dart_resume()
1331 for (idx = 0; idx < dart->hw->ttbr_count; idx++) in apple_dart_resume()
1332 writel(dart->save_ttbr[sid][idx], in apple_dart_resume()
1333 dart->regs + DART_TTBR(dart, sid, idx)); in apple_dart_resume()
1334 writel(dart->save_tcr[sid], dart->regs + DART_TCR(dart, sid)); in apple_dart_resume()
1343 { .compatible = "apple,t8103-dart", .data = &apple_dart_hw_t8103 },
1344 { .compatible = "apple,t8103-usb4-dart", .data = &apple_dart_hw_t8103_usb4 },
1345 { .compatible = "apple,t8110-dart", .data = &apple_dart_hw_t8110 },
1346 { .compatible = "apple,t6000-dart", .data = &apple_dart_hw_t6000 },
1353 .name = "apple-dart",