diff options
| author | Ling Xu <quic_lxu5@quicinc.com> | 2025-09-12 14:13:02 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-12 15:48:45 +0200 |
| commit | 698de37f78c7c0100f5506df36871c64588636e9 (patch) | |
| tree | de8bfcb64fac413662b3f2a389287da6062c1a2a | |
| parent | fb4679f628956e09467e66835025f9a9bcead238 (diff) | |
misc: fastrpc: add support for gdsp remoteproc
Some platforms (like lemans) feature one or more GPDSPs (General
Purpose DSPs). Similar to other kinds of Hexagon DSPs, they provide
a FastRPC implementation, allowing code execution in both signed and
unsigned protection domains. Extend the checks to allow domain names
starting with "gdsp" (possibly followed by an index).
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
Signed-off-by: Ling Xu <quic_lxu5@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://lore.kernel.org/r/20250912131302.303199-5-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/misc/fastrpc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 5fc7dec65ed8..8e1d97873423 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -27,6 +27,7 @@ #define MDSP_DOMAIN_ID (1) #define SDSP_DOMAIN_ID (2) #define CDSP_DOMAIN_ID (3) +#define GDSP_DOMAIN_ID (4) #define FASTRPC_MAX_SESSIONS 14 #define FASTRPC_MAX_VMIDS 16 #define FASTRPC_ALIGN 128 @@ -2249,6 +2250,8 @@ static int fastrpc_get_domain_id(const char *domain) return MDSP_DOMAIN_ID; else if (!strncmp(domain, "sdsp", 4)) return SDSP_DOMAIN_ID; + else if (!strncmp(domain, "gdsp", 4)) + return GDSP_DOMAIN_ID; return -EINVAL; } @@ -2318,13 +2321,14 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) case ADSP_DOMAIN_ID: case MDSP_DOMAIN_ID: case SDSP_DOMAIN_ID: - /* Unsigned PD offloading is only supported on CDSP */ + /* Unsigned PD offloading is only supported on CDSP and GDSP */ data->unsigned_support = false; err = fastrpc_device_register(rdev, data, secure_dsp, domain); if (err) goto err_free_data; break; case CDSP_DOMAIN_ID: + case GDSP_DOMAIN_ID: data->unsigned_support = true; /* Create both device nodes so that we can allow both Signed and Unsigned PD */ err = fastrpc_device_register(rdev, data, true, domain); |