diff options
author | Sven Peter <sven@svenpeter.dev> | 2023-11-26 18:17:01 +0300 |
---|---|---|
committer | Joerg Roedel <jroedel@suse.de> | 2023-11-27 13:15:40 +0300 |
commit | 863c092323ab17a5bc4b2f3185d4136f9e57bbe3 (patch) | |
tree | 6d1be892e27b22441db724e273453468ae334605 /drivers/iommu | |
parent | c58a17a99753749aabd979bc62babb2243266dcc (diff) | |
download | linux-863c092323ab17a5bc4b2f3185d4136f9e57bbe3.tar.xz |
iommu/apple-dart: Add support for t8103 USB4 DART
This variant of the regular t8103 DART is used for the two
USB4/Thunderbolt PCIe controllers. It supports 64 instead of 16 streams
which requires a slightly different MMIO layout.
Acked-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20231126151701.16534-4-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r-- | drivers/iommu/apple-dart.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 8b6b0cdba9b5..f47f60c0a4d0 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -81,6 +81,7 @@ #define DART_T8020_TCR_BYPASS_DAPF BIT(12) #define DART_T8020_TTBR 0x200 +#define DART_T8020_USB4_TTBR 0x400 #define DART_T8020_TTBR_VALID BIT(31) #define DART_T8020_TTBR_ADDR_FIELD_SHIFT 0 #define DART_T8020_TTBR_SHIFT 12 @@ -1217,6 +1218,33 @@ static const struct apple_dart_hw apple_dart_hw_t8103 = { .ttbr_shift = DART_T8020_TTBR_SHIFT, .ttbr_count = 4, }; + +static const struct apple_dart_hw apple_dart_hw_t8103_usb4 = { + .type = DART_T8020, + .irq_handler = apple_dart_t8020_irq, + .invalidate_tlb = apple_dart_t8020_hw_invalidate_tlb, + .oas = 36, + .fmt = APPLE_DART, + .max_sid_count = 64, + + .enable_streams = DART_T8020_STREAMS_ENABLE, + .lock = DART_T8020_CONFIG, + .lock_bit = DART_T8020_CONFIG_LOCK, + + .error = DART_T8020_ERROR, + + .tcr = DART_T8020_TCR, + .tcr_enabled = DART_T8020_TCR_TRANSLATE_ENABLE, + .tcr_disabled = 0, + .tcr_bypass = 0, + + .ttbr = DART_T8020_USB4_TTBR, + .ttbr_valid = DART_T8020_TTBR_VALID, + .ttbr_addr_field_shift = DART_T8020_TTBR_ADDR_FIELD_SHIFT, + .ttbr_shift = DART_T8020_TTBR_SHIFT, + .ttbr_count = 4, +}; + static const struct apple_dart_hw apple_dart_hw_t6000 = { .type = DART_T6000, .irq_handler = apple_dart_t8020_irq, @@ -1309,6 +1337,7 @@ static DEFINE_SIMPLE_DEV_PM_OPS(apple_dart_pm_ops, apple_dart_suspend, apple_dar static const struct of_device_id apple_dart_of_match[] = { { .compatible = "apple,t8103-dart", .data = &apple_dart_hw_t8103 }, + { .compatible = "apple,t8103-usb4-dart", .data = &apple_dart_hw_t8103_usb4 }, { .compatible = "apple,t8110-dart", .data = &apple_dart_hw_t8110 }, { .compatible = "apple,t6000-dart", .data = &apple_dart_hw_t6000 }, {}, |