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Diffstat (limited to 'drivers/soc/apple')
-rw-r--r--drivers/soc/apple/Kconfig3
-rw-r--r--drivers/soc/apple/mailbox.c19
-rw-r--r--drivers/soc/apple/sart.c60
3 files changed, 76 insertions, 6 deletions
diff --git a/drivers/soc/apple/Kconfig b/drivers/soc/apple/Kconfig
index 6388cbe1e56b..ad6736889231 100644
--- a/drivers/soc/apple/Kconfig
+++ b/drivers/soc/apple/Kconfig
@@ -8,7 +8,6 @@ config APPLE_MAILBOX
tristate "Apple SoC mailboxes"
depends on PM
depends on ARCH_APPLE || (64BIT && COMPILE_TEST)
- default ARCH_APPLE
help
Apple SoCs have various co-processors required for certain
peripherals to work (NVMe, display controller, etc.). This
@@ -21,7 +20,6 @@ config APPLE_RTKIT
tristate "Apple RTKit co-processor IPC protocol"
depends on APPLE_MAILBOX
depends on ARCH_APPLE || COMPILE_TEST
- default ARCH_APPLE
help
Apple SoCs such as the M1 come with various co-processors running
their proprietary RTKit operating system. This option enables support
@@ -33,7 +31,6 @@ config APPLE_RTKIT
config APPLE_SART
tristate "Apple SART DMA address filter"
depends on ARCH_APPLE || COMPILE_TEST
- default ARCH_APPLE
help
Apple SART is a simple DMA address filter used on Apple SoCs such
as the M1. It is usually required for the NVMe coprocessor which does
diff --git a/drivers/soc/apple/mailbox.c b/drivers/soc/apple/mailbox.c
index 49a0955e82d6..8f29108dc69a 100644
--- a/drivers/soc/apple/mailbox.c
+++ b/drivers/soc/apple/mailbox.c
@@ -47,6 +47,9 @@
#define APPLE_ASC_MBOX_I2A_RECV0 0x830
#define APPLE_ASC_MBOX_I2A_RECV1 0x838
+#define APPLE_T8015_MBOX_A2I_CONTROL 0x108
+#define APPLE_T8015_MBOX_I2A_CONTROL 0x10c
+
#define APPLE_M3_MBOX_CONTROL_FULL BIT(16)
#define APPLE_M3_MBOX_CONTROL_EMPTY BIT(17)
@@ -382,6 +385,21 @@ static int apple_mbox_probe(struct platform_device *pdev)
return 0;
}
+static const struct apple_mbox_hw apple_mbox_t8015_hw = {
+ .control_full = APPLE_ASC_MBOX_CONTROL_FULL,
+ .control_empty = APPLE_ASC_MBOX_CONTROL_EMPTY,
+
+ .a2i_control = APPLE_T8015_MBOX_A2I_CONTROL,
+ .a2i_send0 = APPLE_ASC_MBOX_A2I_SEND0,
+ .a2i_send1 = APPLE_ASC_MBOX_A2I_SEND1,
+
+ .i2a_control = APPLE_T8015_MBOX_I2A_CONTROL,
+ .i2a_recv0 = APPLE_ASC_MBOX_I2A_RECV0,
+ .i2a_recv1 = APPLE_ASC_MBOX_I2A_RECV1,
+
+ .has_irq_controls = false,
+};
+
static const struct apple_mbox_hw apple_mbox_asc_hw = {
.control_full = APPLE_ASC_MBOX_CONTROL_FULL,
.control_empty = APPLE_ASC_MBOX_CONTROL_EMPTY,
@@ -418,6 +436,7 @@ static const struct apple_mbox_hw apple_mbox_m3_hw = {
static const struct of_device_id apple_mbox_of_match[] = {
{ .compatible = "apple,asc-mailbox-v4", .data = &apple_mbox_asc_hw },
+ { .compatible = "apple,t8015-asc-mailbox", .data = &apple_mbox_t8015_hw },
{ .compatible = "apple,m3-mailbox-v2", .data = &apple_mbox_m3_hw },
{}
};
diff --git a/drivers/soc/apple/sart.c b/drivers/soc/apple/sart.c
index afa111736899..4ff1942b82a7 100644
--- a/drivers/soc/apple/sart.c
+++ b/drivers/soc/apple/sart.c
@@ -25,8 +25,17 @@
#define APPLE_SART_MAX_ENTRIES 16
-/* This is probably a bitfield but the exact meaning of each bit is unknown. */
-#define APPLE_SART_FLAGS_ALLOW 0xff
+/* SARTv0 registers */
+#define APPLE_SART0_CONFIG(idx) (0x00 + 4 * (idx))
+#define APPLE_SART0_CONFIG_FLAGS GENMASK(28, 24)
+#define APPLE_SART0_CONFIG_SIZE GENMASK(18, 0)
+#define APPLE_SART0_CONFIG_SIZE_SHIFT 12
+#define APPLE_SART0_CONFIG_SIZE_MAX GENMASK(18, 0)
+
+#define APPLE_SART0_PADDR(idx) (0x40 + 4 * (idx))
+#define APPLE_SART0_PADDR_SHIFT 12
+
+#define APPLE_SART0_FLAGS_ALLOW 0xf
/* SARTv2 registers */
#define APPLE_SART2_CONFIG(idx) (0x00 + 4 * (idx))
@@ -38,6 +47,8 @@
#define APPLE_SART2_PADDR(idx) (0x40 + 4 * (idx))
#define APPLE_SART2_PADDR_SHIFT 12
+#define APPLE_SART2_FLAGS_ALLOW 0xff
+
/* SARTv3 registers */
#define APPLE_SART3_CONFIG(idx) (0x00 + 4 * (idx))
@@ -48,11 +59,15 @@
#define APPLE_SART3_SIZE_SHIFT 12
#define APPLE_SART3_SIZE_MAX GENMASK(29, 0)
+#define APPLE_SART3_FLAGS_ALLOW 0xff
+
struct apple_sart_ops {
void (*get_entry)(struct apple_sart *sart, int index, u8 *flags,
phys_addr_t *paddr, size_t *size);
void (*set_entry)(struct apple_sart *sart, int index, u8 flags,
phys_addr_t paddr_shifted, size_t size_shifted);
+ /* This is probably a bitfield but the exact meaning of each bit is unknown. */
+ unsigned int flags_allow;
unsigned int size_shift;
unsigned int paddr_shift;
size_t size_max;
@@ -68,6 +83,39 @@ struct apple_sart {
unsigned long used_entries;
};
+static void sart0_get_entry(struct apple_sart *sart, int index, u8 *flags,
+ phys_addr_t *paddr, size_t *size)
+{
+ u32 cfg = readl(sart->regs + APPLE_SART0_CONFIG(index));
+ phys_addr_t paddr_ = readl(sart->regs + APPLE_SART0_PADDR(index));
+ size_t size_ = FIELD_GET(APPLE_SART0_CONFIG_SIZE, cfg);
+
+ *flags = FIELD_GET(APPLE_SART0_CONFIG_FLAGS, cfg);
+ *size = size_ << APPLE_SART0_CONFIG_SIZE_SHIFT;
+ *paddr = paddr_ << APPLE_SART0_PADDR_SHIFT;
+}
+
+static void sart0_set_entry(struct apple_sart *sart, int index, u8 flags,
+ phys_addr_t paddr_shifted, size_t size_shifted)
+{
+ u32 cfg;
+
+ cfg = FIELD_PREP(APPLE_SART0_CONFIG_FLAGS, flags);
+ cfg |= FIELD_PREP(APPLE_SART0_CONFIG_SIZE, size_shifted);
+
+ writel(paddr_shifted, sart->regs + APPLE_SART0_PADDR(index));
+ writel(cfg, sart->regs + APPLE_SART0_CONFIG(index));
+}
+
+static struct apple_sart_ops sart_ops_v0 = {
+ .get_entry = sart0_get_entry,
+ .set_entry = sart0_set_entry,
+ .flags_allow = APPLE_SART0_FLAGS_ALLOW,
+ .size_shift = APPLE_SART0_CONFIG_SIZE_SHIFT,
+ .paddr_shift = APPLE_SART0_PADDR_SHIFT,
+ .size_max = APPLE_SART0_CONFIG_SIZE_MAX,
+};
+
static void sart2_get_entry(struct apple_sart *sart, int index, u8 *flags,
phys_addr_t *paddr, size_t *size)
{
@@ -95,6 +143,7 @@ static void sart2_set_entry(struct apple_sart *sart, int index, u8 flags,
static struct apple_sart_ops sart_ops_v2 = {
.get_entry = sart2_get_entry,
.set_entry = sart2_set_entry,
+ .flags_allow = APPLE_SART2_FLAGS_ALLOW,
.size_shift = APPLE_SART2_CONFIG_SIZE_SHIFT,
.paddr_shift = APPLE_SART2_PADDR_SHIFT,
.size_max = APPLE_SART2_CONFIG_SIZE_MAX,
@@ -122,6 +171,7 @@ static void sart3_set_entry(struct apple_sart *sart, int index, u8 flags,
static struct apple_sart_ops sart_ops_v3 = {
.get_entry = sart3_get_entry,
.set_entry = sart3_set_entry,
+ .flags_allow = APPLE_SART3_FLAGS_ALLOW,
.size_shift = APPLE_SART3_SIZE_SHIFT,
.paddr_shift = APPLE_SART3_PADDR_SHIFT,
.size_max = APPLE_SART3_SIZE_MAX,
@@ -233,7 +283,7 @@ int apple_sart_add_allowed_region(struct apple_sart *sart, phys_addr_t paddr,
if (test_and_set_bit(i, &sart->used_entries))
continue;
- ret = sart_set_entry(sart, i, APPLE_SART_FLAGS_ALLOW, paddr,
+ ret = sart_set_entry(sart, i, sart->ops->flags_allow, paddr,
size);
if (ret) {
dev_dbg(sart->dev,
@@ -314,6 +364,10 @@ static const struct of_device_id apple_sart_of_match[] = {
.compatible = "apple,t8103-sart",
.data = &sart_ops_v2,
},
+ {
+ .compatible = "apple,t8015-sart",
+ .data = &sart_ops_v0,
+ },
{}
};
MODULE_DEVICE_TABLE(of, apple_sart_of_match);
generated by cgit (git 2.34.1) at 2025-10-04 20:38:51 +0000