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path: root/drivers/misc/fastrpc.c
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Diffstat (limited to 'drivers/misc/fastrpc.c')
-rw-r--r--drivers/misc/fastrpc.c65
1 files changed, 56 insertions, 9 deletions
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 8fbb24d763bd..ae7586d7956f 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -17,6 +17,7 @@
#include <linux/rpmsg.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
+#include <linux/qcom_scm.h>
#include <uapi/misc/fastrpc.h>
#define ADSP_DOMAIN_ID (0)
@@ -25,6 +26,7 @@
#define CDSP_DOMAIN_ID (3)
#define FASTRPC_DEV_MAX 4 /* adsp, mdsp, slpi, cdsp*/
#define FASTRPC_MAX_SESSIONS 13 /*12 compute, 1 cpz*/
+#define FASTRPC_MAX_VMIDS 16
#define FASTRPC_ALIGN 128
#define FASTRPC_MAX_FDLIST 16
#define FASTRPC_MAX_CRCLIST 64
@@ -195,6 +197,7 @@ struct fastrpc_map {
void *va;
u64 len;
u64 raddr;
+ u32 attr;
struct kref refcount;
};
@@ -232,6 +235,9 @@ struct fastrpc_session_ctx {
struct fastrpc_channel_ctx {
int domain_id;
int sesscount;
+ int vmcount;
+ u32 perms;
+ struct qcom_scm_vmperm vmperms[FASTRPC_MAX_VMIDS];
struct rpmsg_device *rpdev;
struct fastrpc_session_ctx session[FASTRPC_MAX_SESSIONS];
spinlock_t lock;
@@ -279,6 +285,20 @@ static void fastrpc_free_map(struct kref *ref)
map = container_of(ref, struct fastrpc_map, refcount);
if (map->table) {
+ if (map->attr & FASTRPC_ATTR_SECUREMAP) {
+ struct qcom_scm_vmperm perm;
+ int err = 0;
+
+ perm.vmid = QCOM_SCM_VMID_HLOS;
+ perm.perm = QCOM_SCM_PERM_RWX;
+ err = qcom_scm_assign_mem(map->phys, map->size,
+ &(map->fl->cctx->vmperms[0].vmid), &perm, 1);
+ if (err) {
+ dev_err(map->fl->sctx->dev, "Failed to assign memory phys 0x%llx size 0x%llx err %d",
+ map->phys, map->size, err);
+ return;
+ }
+ }
dma_buf_unmap_attachment(map->attach, map->table,
DMA_BIDIRECTIONAL);
dma_buf_detach(map->buf, map->attach);
@@ -655,7 +675,7 @@ static const struct dma_buf_ops fastrpc_dma_buf_ops = {
};
static int fastrpc_map_create(struct fastrpc_user *fl, int fd,
- u64 len, struct fastrpc_map **ppmap)
+ u64 len, u32 attr, struct fastrpc_map **ppmap)
{
struct fastrpc_session_ctx *sess = fl->sctx;
struct fastrpc_map *map = NULL;
@@ -697,6 +717,22 @@ static int fastrpc_map_create(struct fastrpc_user *fl, int fd,
map->len = len;
kref_init(&map->refcount);
+ if (attr & FASTRPC_ATTR_SECUREMAP) {
+ /*
+ * If subsystem VMIDs are defined in DTSI, then do
+ * hyp_assign from HLOS to those VM(s)
+ */
+ unsigned int perms = BIT(QCOM_SCM_VMID_HLOS);
+
+ map->attr = attr;
+ err = qcom_scm_assign_mem(map->phys, (u64)map->size, &perms,
+ fl->cctx->vmperms, fl->cctx->vmcount);
+ if (err) {
+ dev_err(sess->dev, "Failed to assign memory with phys 0x%llx size 0x%llx err %d",
+ map->phys, map->size, err);
+ goto map_err;
+ }
+ }
spin_lock(&fl->lock);
list_add_tail(&map->node, &fl->maps);
spin_unlock(&fl->lock);
@@ -781,16 +817,13 @@ static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx)
int i, err;
for (i = 0; i < ctx->nscalars; ++i) {
- /* Make sure reserved field is set to 0 */
- if (ctx->args[i].reserved)
- return -EINVAL;
if (ctx->args[i].fd == 0 || ctx->args[i].fd == -1 ||
ctx->args[i].length == 0)
continue;
err = fastrpc_map_create(ctx->fl, ctx->args[i].fd,
- ctx->args[i].length, &ctx->maps[i]);
+ ctx->args[i].length, ctx->args[i].attr, &ctx->maps[i]);
if (err) {
dev_err(dev, "Error Creating map %d\n", err);
return -EINVAL;
@@ -1124,7 +1157,7 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
fl->pd = USER_PD;
if (init.filelen && init.filefd) {
- err = fastrpc_map_create(fl, init.filefd, init.filelen, &map);
+ err = fastrpc_map_create(fl, init.filefd, init.filelen, 0, &map);
if (err)
goto err;
}
@@ -1233,7 +1266,6 @@ static int fastrpc_release_current_dsp_process(struct fastrpc_user *fl)
args[0].ptr = (u64)(uintptr_t) &tgid;
args[0].length = sizeof(tgid);
args[0].fd = -1;
- args[0].reserved = 0;
sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_RELEASE, 1, 0);
return fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE,
@@ -1381,7 +1413,6 @@ static int fastrpc_init_attach(struct fastrpc_user *fl, int pd)
args[0].ptr = (u64)(uintptr_t) &tgid;
args[0].length = sizeof(tgid);
args[0].fd = -1;
- args[0].reserved = 0;
sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_ATTACH, 1, 0);
fl->pd = pd;
@@ -1954,9 +1985,10 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
{
struct device *rdev = &rpdev->dev;
struct fastrpc_channel_ctx *data;
- int i, err, domain_id = -1;
+ int i, err, domain_id = -1, vmcount;
const char *domain;
bool secure_dsp;
+ unsigned int vmids[FASTRPC_MAX_VMIDS];
err = of_property_read_string(rdev->of_node, "label", &domain);
if (err) {
@@ -1976,10 +2008,25 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
return -EINVAL;
}
+ vmcount = of_property_read_variable_u32_array(rdev->of_node,
+ "qcom,vmids", &vmids[0], 0, FASTRPC_MAX_VMIDS);
+ if (vmcount < 0)
+ vmcount = 0;
+ else if (!qcom_scm_is_available())
+ return -EPROBE_DEFER;
+
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
+ if (vmcount) {
+ data->vmcount = vmcount;
+ data->perms = BIT(QCOM_SCM_VMID_HLOS);
+ for (i = 0; i < data->vmcount; i++) {
+ data->vmperms[i].vmid = vmids[i];
+ data->vmperms[i].perm = QCOM_SCM_PERM_RWX;
+ }
+ }
secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain"));
data->secure = secure_dsp;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-13 22:08:51 +0000