diff options
| author | Peter Shih <pihsun@chromium.org> | 2018-12-25 14:01:58 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2019-03-04 22:42:55 -0800 |
| commit | 46222787a6b3c620836967f1010b8d22e1d96b31 (patch) | |
| tree | 23eff08d9b1f0466450bc49cfcf76482e6643587 /chip | |
| parent | 58fee9dbc2ef12bb436ceb18ad116ad2e421dd2d (diff) | |
| download | chrome-ec-46222787a6b3c620836967f1010b8d22e1d96b31.tar.gz | |
kukui_scp: Add rpmsg name service.
rpmsg name service provide a way for firmware to announce
available rpmsg channels and its IPI id to AP, without AP
having to hard-code all the IPI ids.
BUG=b:120953723
TEST=manually
BRANCH=none
Change-Id: I8ec539a45b58f20e70a798ede4abaad5a7bb4360
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1389986
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Yilun Lin <yllin@chromium.org>
Diffstat (limited to 'chip')
| -rw-r--r-- | chip/mt_scp/ipi.c | 11 | ||||
| -rw-r--r-- | chip/mt_scp/ipi_chip.h | 14 |
2 files changed, 25 insertions, 0 deletions
diff --git a/chip/mt_scp/ipi.c b/chip/mt_scp/ipi.c index a8bfce0a11..5ec49d318d 100644 --- a/chip/mt_scp/ipi.c +++ b/chip/mt_scp/ipi.c @@ -131,6 +131,9 @@ void ipi_inform_ap(void) { struct scp_run_t scp_run; int ret; +#ifdef CONFIG_RPMSG_NAME_SERVICE + struct rpmsg_ns_msg ns_msg; +#endif scp_run.signaled = 1; strncpy(scp_run.fw_ver, system_get_version(SYSTEM_IMAGE_RW), @@ -142,6 +145,14 @@ void ipi_inform_ap(void) if (ret) ccprintf("Failed to send initialization IPC messages.\n"); + +#ifdef CONFIG_RPMSG_NAME_SERVICE + ns_msg.id = IPI_HOST_COMMAND; + strncpy(ns_msg.name, "cros-ec-rpmsg", RPMSG_NAME_SIZE); + ret = ipi_send(IPI_NS_SERVICE, &ns_msg, sizeof(ns_msg), 1); + if (ret) + ccprintf("Failed to announce host command channel.\n"); +#endif } #ifdef HAS_TASK_HOSTCMD diff --git a/chip/mt_scp/ipi_chip.h b/chip/mt_scp/ipi_chip.h index 1c027b5d04..b6eeddfc87 100644 --- a/chip/mt_scp/ipi_chip.h +++ b/chip/mt_scp/ipi_chip.h @@ -49,6 +49,20 @@ struct ipc_shared_obj { /* Send a IPI contents to AP. */ int ipi_send(int32_t id, void *buf, uint32_t len, int wait); +/* Size of the rpmsg device name, should sync across kernel and EC. */ +#define RPMSG_NAME_SIZE 32 + +/* + * The layout of name service message. + * This should sync across kernel and EC. + */ +struct rpmsg_ns_msg { + /* Name of the corresponding rpmsg_driver. */ + char name[RPMSG_NAME_SIZE]; + /* IPC ID */ + uint32_t id; +}; + /* * IPC Handler. */ |