arm: apple: nvme: Add SART support and RTKit buffer management
The NVMe firmware in the macOS 13 beta blocks or crashes with u-boot's
current minimal RTKit implementation. It does not provide buffers for
the firmware's buffer requests. The ANS2 firmware included in macOS 11
and 12 tolerates this. The firmware included in the first macOS 13 beta
requires buffers for the crashlog and ioreport endpoints to function.
In the case of the NVMe the buffers are physical memory. Access to
physical memory is guarded by what Apple calls SART.
Import m1n1's SART driver (exclusively used for the NVMe controller).
Implement buffer management helpers for RTKit. These are generic since
other devices (none in u-boot so far) require different handling.
Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Tested-by: Mark Kettenis <kettenis@openbsd.org>
diff --git a/arch/arm/include/asm/arch-apple/rtkit.h b/arch/arm/include/asm/arch-apple/rtkit.h
index 51f77f2..eff18dd 100644
--- a/arch/arm/include/asm/arch-apple/rtkit.h
+++ b/arch/arm/include/asm/arch-apple/rtkit.h
@@ -7,5 +7,23 @@
#define APPLE_RTKIT_PWR_STATE_QUIESCED 0x10
#define APPLE_RTKIT_PWR_STATE_ON 0x20
-int apple_rtkit_init(struct mbox_chan *);
-int apple_rtkit_shutdown(struct mbox_chan *, int);
+struct apple_rtkit_buffer {
+ void *buffer;
+ u64 dva;
+ size_t size;
+ bool is_mapped;
+};
+
+typedef int (*apple_rtkit_shmem_setup)(void *cookie,
+ struct apple_rtkit_buffer *buf);
+typedef void (*apple_rtkit_shmem_destroy)(void *cookie,
+ struct apple_rtkit_buffer *buf);
+
+struct apple_rtkit;
+
+struct apple_rtkit *apple_rtkit_init(struct mbox_chan *chan, void *cookie,
+ apple_rtkit_shmem_setup shmem_setup,
+ apple_rtkit_shmem_destroy shmem_destroy);
+void apple_rtkit_free(struct apple_rtkit *rtk);
+int apple_rtkit_boot(struct apple_rtkit *rtk);
+int apple_rtkit_shutdown(struct apple_rtkit *rtk, int pwrstate);