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iommu/apple-dart: Add support for t8103 USB4 DART

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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>
This commit is contained in:
Sven Peter 2023-11-26 16:17:01 +01:00 committed by Joerg Roedel
parent c58a17a997
commit 863c092323
1 changed files with 29 additions and 0 deletions
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29
drivers/iommu/apple-dart.c
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@ -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 },
{},