[PATCH RFT v2 01/18] firmware: arm_ffa: Update the FF-A command list with v1.1 additions

From: Sudeep Holla
Date: Tue Sep 19 2023 - 13:41:25 EST


Arm Firmware Framework for A-profile(FFA) v1.1 introduces notifications
and indirect messaging based upon notifications support and extends some
of the memory interfaces.

Let us add all the newly supported FF-A function IDs in the spec.
Also update to the error values and associated handling.

Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
---
drivers/firmware/arm_ffa/driver.c | 3 ++-
include/linux/arm_ffa.h | 20 ++++++++++++++++++++
2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index 2109cd178ff7..6fc83fa6b81c 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -64,6 +64,7 @@ static const int ffa_linux_errmap[] = {
-EACCES, /* FFA_RET_DENIED */
-EAGAIN, /* FFA_RET_RETRY */
-ECANCELED, /* FFA_RET_ABORTED */
+ -ENODATA, /* FFA_RET_NO_DATA */
};

static inline int ffa_to_linux_errno(int errno)
@@ -336,7 +337,7 @@ static int ffa_mem_first_frag(u32 func_id, phys_addr_t buf, u32 buf_sz,
if (ret.a0 == FFA_ERROR)
return ffa_to_linux_errno((int)ret.a2);

- if (ret.a0 == FFA_SUCCESS) {
+ if (ret.a0 == FFA_SUCCESS || ret.a0 == FFA_FN64_SUCCESS) {
if (handle)
*handle = PACK_HANDLE(ret.a2, ret.a3);
} else if (ret.a0 == FFA_MEM_FRAG_RX) {
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index cc060da51bec..2ea1717a0825 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -20,6 +20,7 @@

#define FFA_ERROR FFA_SMC_32(0x60)
#define FFA_SUCCESS FFA_SMC_32(0x61)
+#define FFA_FN64_SUCCESS FFA_SMC_64(0x61)
#define FFA_INTERRUPT FFA_SMC_32(0x62)
#define FFA_VERSION FFA_SMC_32(0x63)
#define FFA_FEATURES FFA_SMC_32(0x64)
@@ -54,6 +55,23 @@
#define FFA_MEM_FRAG_RX FFA_SMC_32(0x7A)
#define FFA_MEM_FRAG_TX FFA_SMC_32(0x7B)
#define FFA_NORMAL_WORLD_RESUME FFA_SMC_32(0x7C)
+#define FFA_NOTIFICATION_BITMAP_CREATE FFA_SMC_32(0x7D)
+#define FFA_NOTIFICATION_BITMAP_DESTROY FFA_SMC_32(0x7E)
+#define FFA_NOTIFICATION_BIND FFA_SMC_32(0x7F)
+#define FFA_NOTIFICATION_UNBIND FFA_SMC_32(0x80)
+#define FFA_NOTIFICATION_SET FFA_SMC_32(0x81)
+#define FFA_NOTIFICATION_GET FFA_SMC_32(0x82)
+#define FFA_NOTIFICATION_INFO_GET FFA_SMC_32(0x83)
+#define FFA_FN64_NOTIFICATION_INFO_GET FFA_SMC_64(0x83)
+#define FFA_RX_ACQUIRE FFA_SMC_32(0x84)
+#define FFA_SPM_ID_GET FFA_SMC_32(0x85)
+#define FFA_MSG_SEND2 FFA_SMC_32(0x86)
+#define FFA_SECONDARY_EP_REGISTER FFA_SMC_32(0x87)
+#define FFA_FN64_SECONDARY_EP_REGISTER FFA_SMC_64(0x87)
+#define FFA_MEM_PERM_GET FFA_SMC_32(0x88)
+#define FFA_FN64_MEM_PERM_GET FFA_SMC_64(0x88)
+#define FFA_MEM_PERM_SET FFA_SMC_32(0x89)
+#define FFA_FN64_MEM_PERM_SET FFA_SMC_64(0x89)

/*
* For some calls it is necessary to use SMC64 to pass or return 64-bit values.
@@ -76,6 +94,7 @@
#define FFA_RET_DENIED (-6)
#define FFA_RET_RETRY (-7)
#define FFA_RET_ABORTED (-8)
+#define FFA_RET_NO_DATA (-9)

/* FFA version encoding */
#define FFA_MAJOR_VERSION_MASK GENMASK(30, 16)
@@ -86,6 +105,7 @@
(FIELD_PREP(FFA_MAJOR_VERSION_MASK, (major)) | \
FIELD_PREP(FFA_MINOR_VERSION_MASK, (minor)))
#define FFA_VERSION_1_0 FFA_PACK_VERSION_INFO(1, 0)
+#define FFA_VERSION_1_1 FFA_PACK_VERSION_INFO(1, 1)

/**
* FF-A specification mentions explicitly about '4K pages'. This should

--
2.42.0