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lib: utils: Implement get_attribute() for the RPMI shared memory mailbox

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To allow clients query service group version of a RPMI mailbox channel,
implement get_attribute() callback for the RPMI shared memory mailbox
controller.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
This commit is contained in:
Anup Patel
2025-01-12 11:22:00 +05:30
committed by Anup Patel
parent f8272946da
commit 91012b475d
2 changed files with 47 additions and 1 deletions
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13
include/sbi_utils/mailbox/rpmi_msgprot.h
View File

@@ -175,7 +175,7 @@ enum rpmi_error {
RPMI_ERR_VENDOR_START = -128, RPMI_ERR_VENDOR_START = -128,
}; };
/** RPMI Message Arguments */ /** RPMI Mailbox Message Arguments */
struct rpmi_message_args { struct rpmi_message_args {
u32 flags; u32 flags;
#define RPMI_MSG_FLAGS_NO_TX (1U << 0) #define RPMI_MSG_FLAGS_NO_TX (1U << 0)
@@ -189,6 +189,17 @@ struct rpmi_message_args {
u32 rx_data_len; u32 rx_data_len;
}; };
/** RPMI Mailbox Channel Attribute IDs */
enum rpmi_channel_attribute_id {
RPMI_CHANNEL_ATTR_PROTOCOL_VERSION = 0,
RPMI_CHANNEL_ATTR_MAX_DATA_LEN,
RPMI_CHANNEL_ATTR_TX_TIMEOUT,
RPMI_CHANNEL_ATTR_RX_TIMEOUT,
RPMI_CHANNEL_ATTR_SERVICEGROUP_ID,
RPMI_CHANNEL_ATTR_SERVICEGROUP_VERSION,
RPMI_CHANNEL_ATTR_MAX,
};
/* /*
* RPMI SERVICEGROUPS AND SERVICES * RPMI SERVICEGROUPS AND SERVICES
*/ */

35
lib/utils/mailbox/fdt_mailbox_rpmi_shmem.c
View File

@@ -490,6 +490,40 @@ static int rpmi_shmem_mbox_xfer(struct mbox_chan *chan, struct mbox_xfer *xfer)
return 0; return 0;
} }
static int rpmi_shmem_mbox_get_attribute(struct mbox_chan *chan,
int attr_id, void *out_value)
{
struct rpmi_shmem_mbox_controller *mctl =
container_of(chan->mbox,
struct rpmi_shmem_mbox_controller,
controller);
struct rpmi_srvgrp_chan *srvgrp_chan = to_srvgrp_chan(chan);
switch (attr_id) {
case RPMI_CHANNEL_ATTR_PROTOCOL_VERSION:
*((u32 *)out_value) = mctl->spec_version;
break;
case RPMI_CHANNEL_ATTR_MAX_DATA_LEN:
*((u32 *)out_value) = RPMI_MSG_DATA_SIZE(mctl->slot_size);
break;
case RPMI_CHANNEL_ATTR_TX_TIMEOUT:
*((u32 *)out_value) = RPMI_DEF_TX_TIMEOUT;
break;
case RPMI_CHANNEL_ATTR_RX_TIMEOUT:
*((u32 *)out_value) = RPMI_DEF_RX_TIMEOUT;
break;
case RPMI_CHANNEL_ATTR_SERVICEGROUP_ID:
*((u32 *)out_value) = srvgrp_chan->servicegroup_id;
break;
case RPMI_CHANNEL_ATTR_SERVICEGROUP_VERSION:
*((u32 *)out_value) = srvgrp_chan->servicegroup_version;
break;
default:
return SBI_ENOTSUPP;
}
return 0;
}
static struct mbox_chan *rpmi_shmem_mbox_request_chan( static struct mbox_chan *rpmi_shmem_mbox_request_chan(
struct mbox_controller *mbox, struct mbox_controller *mbox,
@@ -665,6 +699,7 @@ static int rpmi_shmem_mbox_init(const void *fdt, int nodeoff,
mctl->controller.request_chan = rpmi_shmem_mbox_request_chan; mctl->controller.request_chan = rpmi_shmem_mbox_request_chan;
mctl->controller.free_chan = rpmi_shmem_mbox_free_chan; mctl->controller.free_chan = rpmi_shmem_mbox_free_chan;
mctl->controller.xfer = rpmi_shmem_mbox_xfer; mctl->controller.xfer = rpmi_shmem_mbox_xfer;
mctl->controller.get_attribute = rpmi_shmem_mbox_get_attribute;
ret = mbox_controller_add(&mctl->controller); ret = mbox_controller_add(&mctl->controller);
if (ret) if (ret)
goto fail_free_controller; goto fail_free_controller;