[PATCH v3 00/12] misc: fastrpc: Add missing DSP FastRPC features

[PATCH v3 00/12] misc: fastrpc: Add missing DSP FastRPC features

[Srinivas Kandagatla]

This patchset adds below DSP FastRPC features that have been missing in
upstream fastrpc driver and also cleans up channel context structure with kref.

- Add ablity to reflect if the DSP domain is secure/unsecure by creating
 seperate device nodes for secured domain, this would used by SE policy
 to restrict applications loading process on the DSP.
- Add new IOCTL to get DSP capabilites
- Add IOCTL to support mapping memory on the DSP.
- Add support for allocating secure memory for DSP
- Handle fdlist in put args
- Handle dma fds in invoke request.

Tested this series on DragonBoard 845c with TensoFlowLite.

Changes since v2:
- Add support for Secure Memory allocations.
- added handling fdlist and dmalist in and after invoke.
- removed unnecessary debug log
- removed dependency on yaml bindings and added new bindings to .txt


Jeya R (5):
  misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
  misc: fastrpc: Add support to get DSP capabilities
  dt-bindings: misc: add property to support non-secure DSP
  misc: fastrpc: check before loading process to the DSP
  arm64: dts: qcom: add non-secure domain property to fastrpc nodes

Srinivas Kandagatla (2):
  misc: fastrpc: separate fastrpc device from channel context
  misc: fastrpc: add secure domain support

Vamsi Krishna Gattupalli (5):
  dt-bindings: misc: add fastrpc domain vmid property
  misc: fastrpc: Add support to secure memory map
  misc: fastrpc: Add helper function to get list and page
  misc: fastrpc: Add fdlist implementation
  misc: fastrpc: Add dma handle implementation

 .../devicetree/bindings/misc/qcom,fastrpc.txt |  10 +
 arch/arm64/boot/dts/qcom/msm8916.dtsi         |   1 +
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |   2 +
 arch/arm64/boot/dts/qcom/sm8150.dtsi          |   3 +
 arch/arm64/boot/dts/qcom/sm8250.dtsi          |   3 +
 arch/arm64/boot/dts/qcom/sm8350.dtsi          |   3 +
 drivers/misc/fastrpc.c                        | 552 ++++++++++++++++--
 include/uapi/misc/fastrpc.h                   |  81 ++-
 8 files changed, 607 insertions(+), 48 deletions(-)

-- 
2.21.0

[PATCH v3 01/12] misc: fastrpc: separate fastrpc device from channel context

[Srinivas Kandagatla]

Currently fastrpc misc device instance is within channel context struct
with a kref. So we have 2 structs with refcount, both of them managing the
same channel context structure.

Separate fastrpc device from channel context and by adding a dedicated
fastrpc_device structure, this should clean the structures a bit and also help
when adding secure device node support.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c | 48 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 39 insertions(+), 9 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 4ccbf43e6bfa..00cf0dbb6084 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -78,7 +78,7 @@
 #define USER_PD		(1)
 #define SENSORS_PD	(2)
 
-#define miscdev_to_cctx(d) container_of(d, struct fastrpc_channel_ctx, miscdev)
+#define miscdev_to_fdevice(d) container_of(d, struct fastrpc_device, miscdev)
 
 static const char *domains[FASTRPC_DEV_MAX] = { "adsp", "mdsp",
 						"sdsp", "cdsp"};
@@ -212,8 +212,13 @@ struct fastrpc_channel_ctx {
 	spinlock_t lock;
 	struct idr ctx_idr;
 	struct list_head users;
-	struct miscdevice miscdev;
 	struct kref refcount;
+	struct fastrpc_device *fdevice;
+};
+
+struct fastrpc_device {
+	struct fastrpc_channel_ctx *cctx;
+	struct miscdevice miscdev;
 };
 
 struct fastrpc_user {
@@ -1220,10 +1225,14 @@ static int fastrpc_device_release(struct inode *inode, struct file *file)
 
 static int fastrpc_device_open(struct inode *inode, struct file *filp)
 {
-	struct fastrpc_channel_ctx *cctx = miscdev_to_cctx(filp->private_data);
+	struct fastrpc_channel_ctx *cctx = NULL;
+	struct fastrpc_device *fdevice = NULL;
 	struct fastrpc_user *fl = NULL;
 	unsigned long flags;
 
+	fdevice = miscdev_to_fdevice(filp->private_data);
+	cctx = fdevice->cctx;
+
 	fl = kzalloc(sizeof(*fl), GFP_KERNEL);
 	if (!fl)
 		return -ENOMEM;
@@ -1608,6 +1617,29 @@ static struct platform_driver fastrpc_cb_driver = {
 	},
 };
 
+static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ctx *cctx,
+				   const char *domain)
+{
+	struct fastrpc_device *fdev;
+	int err;
+
+	fdev = devm_kzalloc(dev, sizeof(*fdev), GFP_KERNEL);
+	if (!fdev)
+		return -ENOMEM;
+
+	fdev->cctx = cctx;
+	fdev->miscdev.minor = MISC_DYNAMIC_MINOR;
+	fdev->miscdev.fops = &fastrpc_fops;
+	fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s", domain);
+	err = misc_register(&fdev->miscdev);
+	if (err)
+		kfree(fdev);
+	else
+		cctx->fdevice = fdev;
+
+	return err;
+}
+
 static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 {
 	struct device *rdev = &rpdev->dev;
@@ -1637,11 +1669,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 	if (!data)
 		return -ENOMEM;
 
-	data->miscdev.minor = MISC_DYNAMIC_MINOR;
-	data->miscdev.name = devm_kasprintf(rdev, GFP_KERNEL, "fastrpc-%s",
-					    domains[domain_id]);
-	data->miscdev.fops = &fastrpc_fops;
-	err = misc_register(&data->miscdev);
+	err = fastrpc_device_register(rdev, data, domains[domain_id]);
 	if (err) {
 		kfree(data);
 		return err;
@@ -1681,7 +1709,9 @@ static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev)
 		fastrpc_notify_users(user);
 	spin_unlock_irqrestore(&cctx->lock, flags);
 
-	misc_deregister(&cctx->miscdev);
+	if (cctx->fdevice)
+		misc_deregister(&cctx->fdevice->miscdev);
+
 	of_platform_depopulate(&rpdev->dev);
 
 	cctx->rpdev = NULL;
-- 
2.21.0

[PATCH v3 02/12] misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP

[Srinivas Kandagatla]

From: Jeya R <jeyr@codeaurora.org>

Add support for IOCTL requests to map and unmap on DSP based on map
flags.

Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c      | 155 ++++++++++++++++++++++++++++++++++++
 include/uapi/misc/fastrpc.h |  51 ++++++++++++
 2 files changed, 206 insertions(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 00cf0dbb6084..a840b8dabf0e 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -72,6 +72,8 @@
 #define FASTRPC_RMID_INIT_CREATE	6
 #define FASTRPC_RMID_INIT_CREATE_ATTR	7
 #define FASTRPC_RMID_INIT_CREATE_STATIC	8
+#define FASTRPC_RMID_INIT_MEM_MAP      10
+#define FASTRPC_RMID_INIT_MEM_UNMAP    11
 
 /* Protection Domain(PD) ids */
 #define AUDIO_PD	(0) /* also GUEST_OS PD? */
@@ -108,12 +110,29 @@ struct fastrpc_mmap_req_msg {
 	s32 num;
 };
 
+struct fastrpc_mem_map_req_msg {
+	s32 pgid;
+	s32 fd;
+	s32 offset;
+	u32 flags;
+	u64 vaddrin;
+	s32 num;
+	s32 data_len;
+};
+
 struct fastrpc_munmap_req_msg {
 	s32 pgid;
 	u64 vaddr;
 	u64 size;
 };
 
+struct fastrpc_mem_unmap_req_msg {
+	s32 pgid;
+	s32 fd;
+	u64 vaddrin;
+	u64 len;
+};
+
 struct fastrpc_msg {
 	int pid;		/* process group id */
 	int tid;		/* thread id */
@@ -170,6 +189,7 @@ struct fastrpc_map {
 	u64 size;
 	void *va;
 	u64 len;
+	u64 raddr;
 	struct kref refcount;
 };
 
@@ -1493,6 +1513,135 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
 	return err;
 }
 
+static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req)
+{
+	struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
+	struct fastrpc_map *map = NULL, *m;
+	struct fastrpc_mem_unmap_req_msg req_msg = { 0 };
+	int err = 0;
+	u32 sc;
+	struct device *dev = fl->sctx->dev;
+
+	spin_lock(&fl->lock);
+	list_for_each_entry_safe(map, m, &fl->maps, node) {
+		if ((req->fd < 0 || map->fd == req->fd) && (map->raddr == req->vaddr))
+			break;
+		map = NULL;
+	}
+
+	spin_unlock(&fl->lock);
+
+	if (!map) {
+		dev_err(dev, "map not in list\n");
+		return -EINVAL;
+	}
+
+	req_msg.pgid = fl->tgid;
+	req_msg.len = map->len;
+	req_msg.vaddrin = map->raddr;
+	req_msg.fd = map->fd;
+
+	args[0].ptr = (u64) &req_msg;
+	args[0].length = sizeof(req_msg);
+
+	sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
+	err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
+				      &args[0]);
+	fastrpc_map_put(map);
+	if (err)
+		dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n",  map->fd, map->raddr);
+
+	return err;
+}
+
+static int fastrpc_req_mem_unmap(struct fastrpc_user *fl, char __user *argp)
+{
+	struct fastrpc_mem_unmap req;
+
+	if (copy_from_user(&req, argp, sizeof(req)))
+		return -EFAULT;
+
+	return fastrpc_req_mem_unmap_impl(fl, &req);
+}
+
+static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
+{
+	struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } };
+	struct fastrpc_mem_map_req_msg req_msg = { 0 };
+	struct fastrpc_mmap_rsp_msg rsp_msg = { 0 };
+	struct fastrpc_mem_unmap req_unmap = { 0 };
+	struct fastrpc_phy_page pages = { 0 };
+	struct fastrpc_mem_map req;
+	struct device *dev = fl->sctx->dev;
+	struct fastrpc_map *map = NULL;
+	int err;
+	u32 sc;
+
+	if (copy_from_user(&req, argp, sizeof(req)))
+		return -EFAULT;
+
+	/* create SMMU mapping */
+	err = fastrpc_map_create(fl, req.fd, req.length, &map);
+	if (err) {
+		dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
+		return err;
+	}
+
+	req_msg.pgid = fl->tgid;
+	req_msg.fd = req.fd;
+	req_msg.offset = req.offset;
+	req_msg.vaddrin = req.vaddrin;
+	map->va = (void *) req.vaddrin;
+	req_msg.flags = req.flags;
+	req_msg.num = sizeof(pages);
+	req_msg.data_len = 0;
+
+	args[0].ptr = (u64) &req_msg;
+	args[0].length = sizeof(req_msg);
+
+	pages.addr = map->phys;
+	pages.size = map->size;
+
+	args[1].ptr = (u64) &pages;
+	args[1].length = sizeof(pages);
+
+	args[2].ptr = (u64) &pages;
+	args[2].length = 0;
+
+	args[3].ptr = (u64) &rsp_msg;
+	args[3].length = sizeof(rsp_msg);
+
+	sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
+	err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]);
+	if (err) {
+		dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n",
+			req.fd, req.vaddrin, map->size);
+		goto err_invoke;
+	}
+
+	/* update the buffer to be able to deallocate the memory on the DSP */
+	map->raddr = rsp_msg.vaddr;
+
+	/* let the client know the address to use */
+	req.vaddrout = rsp_msg.vaddr;
+
+	if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
+		/* unmap the memory and release the buffer */
+		req_unmap.vaddr = (uintptr_t) rsp_msg.vaddr;
+		req_unmap.length = map->size;
+		fastrpc_req_mem_unmap_impl(fl, &req_unmap);
+		return -EFAULT;
+	}
+
+	return 0;
+
+err_invoke:
+	if (map)
+		fastrpc_map_put(map);
+
+	return err;
+}
+
 static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
 				 unsigned long arg)
 {
@@ -1522,6 +1671,12 @@ static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
 	case FASTRPC_IOCTL_MUNMAP:
 		err = fastrpc_req_munmap(fl, argp);
 		break;
+	case FASTRPC_IOCTL_MEM_MAP:
+		err = fastrpc_req_mem_map(fl, argp);
+		break;
+	case FASTRPC_IOCTL_MEM_UNMAP:
+		err = fastrpc_req_mem_unmap(fl, argp);
+		break;
 	default:
 		err = -ENOTTY;
 		break;
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index 0a89f95463f6..d248eeb20e67 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -13,6 +13,37 @@
 #define FASTRPC_IOCTL_MMAP		_IOWR('R', 6, struct fastrpc_req_mmap)
 #define FASTRPC_IOCTL_MUNMAP		_IOWR('R', 7, struct fastrpc_req_munmap)
 #define FASTRPC_IOCTL_INIT_ATTACH_SNS	_IO('R', 8)
+#define FASTRPC_IOCTL_MEM_MAP		_IOWR('R', 10, struct fastrpc_mem_map)
+#define FASTRPC_IOCTL_MEM_UNMAP		_IOWR('R', 11, struct fastrpc_mem_unmap)
+
+/**
+ * enum fastrpc_map_flags - control flags for mapping memory on DSP user process
+ * @FASTRPC_MAP_STATIC: Map memory pages with RW- permission and CACHE WRITEBACK.
+ * The driver is responsible for cache maintenance when passed
+ * the buffer to FastRPC calls. Same virtual address will be
+ * assigned for subsequent FastRPC calls.
+ * @FASTRPC_MAP_RESERVED: Reserved
+ * @FASTRPC_MAP_FD: Map memory pages with RW- permission and CACHE WRITEBACK.
+ * Mapping tagged with a file descriptor. User is responsible for
+ * CPU and DSP cache maintenance for the buffer. Get virtual address
+ * of buffer on DSP using HAP_mmap_get() and HAP_mmap_put() APIs.
+ * @FASTRPC_MAP_FD_DELAYED: Mapping delayed until user call HAP_mmap() and HAP_munmap()
+ * functions on DSP. It is useful to map a buffer with cache modes
+ * other than default modes. User is responsible for CPU and DSP
+ * cache maintenance for the buffer.
+ * @FASTRPC_MAP_FD_NOMAP: This flag is used to skip CPU mapping,
+ * otherwise behaves similar to FASTRPC_MAP_FD_DELAYED flag.
+ * @FASTRPC_MAP_MAX: max count for flags
+ *
+ */
+enum fastrpc_map_flags {
+	FASTRPC_MAP_STATIC = 0,
+	FASTRPC_MAP_RESERVED,
+	FASTRPC_MAP_FD = 2,
+	FASTRPC_MAP_FD_DELAYED,
+	FASTRPC_MAP_FD_NOMAP = 16,
+	FASTRPC_MAP_MAX,
+};
 
 struct fastrpc_invoke_args {
 	__u64 ptr;
@@ -49,9 +80,29 @@ struct fastrpc_req_mmap {
 	__u64 vaddrout;	/* dsp virtual address */
 };
 
+struct fastrpc_mem_map {
+	__s32 version;
+	__s32 fd;		/* fd */
+	__s32 offset;		/* buffer offset */
+	__u32 flags;		/* flags defined in enum fastrpc_map_flags */
+	__u64 vaddrin;		/* buffer virtual address */
+	__u64 length;		/* buffer length */
+	__u64 vaddrout;		/* [out] remote virtual address */
+	__s32 attrs;		/* buffer attributes used for SMMU mapping */
+	__s32 reserved[4];
+};
+
 struct fastrpc_req_munmap {
 	__u64 vaddrout;	/* address to unmap */
 	__u64 size;	/* size */
 };
 
+struct fastrpc_mem_unmap {
+	__s32 vesion;
+	__s32 fd;		/* fd */
+	__u64 vaddr;		/* remote process (dsp) virtual address */
+	__u64 length;		/* buffer size */
+	__s32 reserved[5];
+};
+
 #endif /* __QCOM_FASTRPC_H__ */
-- 
2.21.0

[PATCH v3 03/12] misc: fastrpc: Add support to get DSP capabilities

[Srinivas Kandagatla]

From: Jeya R <jeyr@codeaurora.org>

Add support to get DSP capabilities. The capability information is cached
on driver.

Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c      | 105 ++++++++++++++++++++++++++++++++++++
 include/uapi/misc/fastrpc.h |   8 +++
 2 files changed, 113 insertions(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index a840b8dabf0e..d5fafbe3c709 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -31,10 +31,14 @@
 #define FASTRPC_PHYS(p)	((p) & 0xffffffff)
 #define FASTRPC_CTX_MAX (256)
 #define FASTRPC_INIT_HANDLE	1
+#define FASTRPC_DSP_UTILITIES_HANDLE	2
 #define FASTRPC_CTXID_MASK (0xFF0)
 #define INIT_FILELEN_MAX (2 * 1024 * 1024)
 #define FASTRPC_DEVICE_NAME	"fastrpc"
 #define ADSP_MMAP_ADD_PAGES 0x1000
+#define DSP_UNSUPPORTED_API (0x80000414)
+/* MAX NUMBER of DSP ATTRIBUTES SUPPORTED */
+#define FASTRPC_MAX_DSP_ATTRIBUTES (256)
 
 /* Retrives number of input buffers from the scalars parameter */
 #define REMOTE_SCALARS_INBUFS(sc)	(((sc) >> 16) & 0x0ff)
@@ -233,6 +237,9 @@ struct fastrpc_channel_ctx {
 	struct idr ctx_idr;
 	struct list_head users;
 	struct kref refcount;
+	/* Flag if dsp attributes are cached */
+	bool valid_attributes;
+	u32 dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
 	struct fastrpc_device *fdevice;
 };
 
@@ -1371,6 +1378,101 @@ static int fastrpc_invoke(struct fastrpc_user *fl, char __user *argp)
 	return err;
 }
 
+static int fastrpc_get_info_from_dsp(struct fastrpc_user *fl, uint32_t *dsp_attr_buf,
+				     uint32_t dsp_attr_buf_len)
+{
+	struct fastrpc_invoke_args args[2] = { 0 };
+
+	/* Capability filled in userspace */
+	dsp_attr_buf[0] = 0;
+
+	args[0].ptr = (u64)(uintptr_t)&dsp_attr_buf_len;
+	args[0].length = sizeof(dsp_attr_buf_len);
+	args[0].fd = -1;
+	args[1].ptr = (u64)(uintptr_t)&dsp_attr_buf[1];
+	args[1].length = dsp_attr_buf_len * sizeof(uint32_t);
+	args[1].fd = -1;
+	fl->pd = 1;
+
+	return fastrpc_internal_invoke(fl, true, FASTRPC_DSP_UTILITIES_HANDLE,
+				       FASTRPC_SCALARS(0, 1, 1), args);
+}
+
+static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
+					struct fastrpc_user *fl)
+{
+	struct fastrpc_channel_ctx *cctx = fl->cctx;
+	uint32_t attribute_id = cap->attribute_id;
+	uint32_t dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
+	unsigned long flags;
+	uint32_t domain = cap->domain;
+	int err;
+
+	spin_lock_irqsave(&cctx->lock, flags);
+	/* check if we already have queried dsp for attributes */
+	if (cctx->valid_attributes) {
+		spin_unlock_irqrestore(&cctx->lock, flags);
+		goto done;
+	}
+	spin_unlock_irqrestore(&cctx->lock, flags);
+
+	err = fastrpc_get_info_from_dsp(fl, &dsp_attributes[0], FASTRPC_MAX_DSP_ATTRIBUTES);
+	if (err == DSP_UNSUPPORTED_API) {
+		dev_info(&cctx->rpdev->dev,
+			 "Warning: DSP capabilities not supported on domain: %d\n", domain);
+		return -EOPNOTSUPP;
+	} else if (err) {
+		dev_err(&cctx->rpdev->dev, "Error: dsp information is incorrect err: %d\n", err);
+		return err;
+	}
+
+	spin_lock_irqsave(&cctx->lock, flags);
+	memcpy(cctx->dsp_attributes, dsp_attributes, sizeof(u32) * FASTRPC_MAX_DSP_ATTRIBUTES);
+	cctx->valid_attributes = true;
+	spin_unlock_irqrestore(&cctx->lock, flags);
+done:
+	cap->capability = cctx->dsp_attributes[attribute_id];
+
+	return 0;
+}
+
+static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp)
+{
+	struct fastrpc_ioctl_capability cap = {0};
+	int err = 0;
+
+	if (copy_from_user(&cap, argp, sizeof(cap)))
+		return  -EFAULT;
+
+	cap.capability = 0;
+	if (cap.domain >= FASTRPC_DEV_MAX) {
+		dev_err(&fl->cctx->rpdev->dev, "Error: Invalid domain id:%d, err:%d\n",
+			cap.domain, err);
+		return -ECHRNG;
+	}
+
+	/* Fastrpc Capablities does not support modem domain */
+	if (cap.domain == MDSP_DOMAIN_ID) {
+		dev_err(&fl->cctx->rpdev->dev, "Error: modem not supported %d\n", err);
+		return -ECHRNG;
+	}
+
+	if (cap.attribute_id >= FASTRPC_MAX_DSP_ATTRIBUTES) {
+		dev_err(&fl->cctx->rpdev->dev, "Error: invalid attribute: %d, err: %d\n",
+			cap.attribute_id, err);
+		return -EOVERFLOW;
+	}
+
+	err = fastrpc_get_info_from_kernel(&cap, fl);
+	if (err)
+		return err;
+
+	if (copy_to_user(argp, &cap.capability, sizeof(cap.capability)))
+		return -EFAULT;
+
+	return 0;
+}
+
 static int fastrpc_req_munmap_impl(struct fastrpc_user *fl,
 				   struct fastrpc_req_munmap *req)
 {
@@ -1677,6 +1779,9 @@ static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
 	case FASTRPC_IOCTL_MEM_UNMAP:
 		err = fastrpc_req_mem_unmap(fl, argp);
 		break;
+	case FASTRPC_IOCTL_GET_DSP_INFO:
+		err = fastrpc_get_dsp_info(fl, argp);
+		break;
 	default:
 		err = -ENOTTY;
 		break;
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index d248eeb20e67..7cc9d342078a 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -15,6 +15,7 @@
 #define FASTRPC_IOCTL_INIT_ATTACH_SNS	_IO('R', 8)
 #define FASTRPC_IOCTL_MEM_MAP		_IOWR('R', 10, struct fastrpc_mem_map)
 #define FASTRPC_IOCTL_MEM_UNMAP		_IOWR('R', 11, struct fastrpc_mem_unmap)
+#define FASTRPC_IOCTL_GET_DSP_INFO	_IOWR('R', 13, struct fastrpc_ioctl_capability)
 
 /**
  * enum fastrpc_map_flags - control flags for mapping memory on DSP user process
@@ -105,4 +106,11 @@ struct fastrpc_mem_unmap {
 	__s32 reserved[5];
 };
 
+struct fastrpc_ioctl_capability {
+	__u32 domain;
+	__u32 attribute_id;
+	__u32 capability;   /* dsp capability */
+	__u32 reserved[4];
+};
+
 #endif /* __QCOM_FASTRPC_H__ */
-- 
2.21.0

[PATCH v3 04/12] dt-bindings: misc: add property to support non-secure DSP

[Srinivas Kandagatla]

From: Jeya R <jeyr@codeaurora.org>

Add property to set DSP domain as non-secure.

ADSP/MDSP/SDSP are by default secured, where as CDSP can be either be
secured/unsecured.
non-secured Compute DSP would allow users to load unsigned process
and run hexagon instructions, but limiting access to secured hardware
within the DSP.

Based on this flag device nodes for secured and unsecured are created.

Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 Documentation/devicetree/bindings/misc/qcom,fastrpc.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
index 2a1827ab50d2..f9a01e2b4c96 100644
--- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
@@ -17,6 +17,11 @@ other tasks.
 	Definition: should specify the dsp domain name this fastrpc
 	corresponds to. must be one of this: "adsp", "mdsp", "sdsp", "cdsp"
 
+- qcom,non-secure-domain:
+	Usage: required
+	Value type: <boolean>
+	Definition: Property to specify that dsp domain is non-secure.
+
 - #address-cells
 	Usage: required
 	Value type: <u32>
-- 
2.21.0

[PATCH v3 05/12] misc: fastrpc: add secure domain support

[Srinivas Kandagatla]

ADSP/MDSP/SDSP are by default secured, which means it can only be loaded
with a Signed process.
Where as CDSP can be either be secured/unsecured. non-secured Compute DSP
would allow users to load unsigned process and run hexagon instructions,
but blocking access to secured hardware within the DSP. Where as signed
process with secure CDSP would be allowed to access all the dsp resources.

This patch adds basic code to create device nodes as per device tree property.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c | 57 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 47 insertions(+), 10 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index d5fafbe3c709..9eadbcf451ef 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -240,12 +240,15 @@ struct fastrpc_channel_ctx {
 	/* Flag if dsp attributes are cached */
 	bool valid_attributes;
 	u32 dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
+	struct fastrpc_device *secure_fdevice;
 	struct fastrpc_device *fdevice;
+	bool secure;
 };
 
 struct fastrpc_device {
 	struct fastrpc_channel_ctx *cctx;
 	struct miscdevice miscdev;
+	bool secure;
 };
 
 struct fastrpc_user {
@@ -1683,7 +1686,7 @@ static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
 		return -EFAULT;
 
 	/* create SMMU mapping */
-	err = fastrpc_map_create(fl, req.fd, req.length, &map);
+	err = fastrpc_map_create(fl, req.fd, req.length, 0, &map);
 	if (err) {
 		dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
 		return err;
@@ -1878,7 +1881,7 @@ static struct platform_driver fastrpc_cb_driver = {
 };
 
 static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ctx *cctx,
-				   const char *domain)
+				   bool is_secured, const char *domain)
 {
 	struct fastrpc_device *fdev;
 	int err;
@@ -1887,15 +1890,21 @@ static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ct
 	if (!fdev)
 		return -ENOMEM;
 
+	fdev->secure = is_secured;
 	fdev->cctx = cctx;
 	fdev->miscdev.minor = MISC_DYNAMIC_MINOR;
 	fdev->miscdev.fops = &fastrpc_fops;
-	fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s", domain);
+	fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s%s",
+					    domain, is_secured ? "-secure" : "");
 	err = misc_register(&fdev->miscdev);
-	if (err)
+	if (err) {
 		kfree(fdev);
-	else
-		cctx->fdevice = fdev;
+	} else {
+		if (is_secured)
+			cctx->secure_fdevice = fdev;
+		else
+			cctx->fdevice = fdev;
+	}
 
 	return err;
 }
@@ -1906,6 +1915,7 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 	struct fastrpc_channel_ctx *data;
 	int i, err, domain_id = -1;
 	const char *domain;
+	bool secure_dsp;
 
 	err = of_property_read_string(rdev->of_node, "label", &domain);
 	if (err) {
@@ -1929,10 +1939,31 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 	if (!data)
 		return -ENOMEM;
 
-	err = fastrpc_device_register(rdev, data, domains[domain_id]);
-	if (err) {
-		kfree(data);
-		return err;
+
+	secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain"));
+	data->secure = secure_dsp;
+
+	switch (domain_id) {
+	case ADSP_DOMAIN_ID:
+	case MDSP_DOMAIN_ID:
+	case SDSP_DOMAIN_ID:
+		err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]);
+		if (err)
+			goto fdev_error;
+		break;
+	case CDSP_DOMAIN_ID:
+		/* Create both device nodes so that we can allow both Signed and Unsigned PD */
+		err = fastrpc_device_register(rdev, data, true, domains[domain_id]);
+		if (err)
+			goto fdev_error;
+
+		err = fastrpc_device_register(rdev, data, false, domains[domain_id]);
+		if (err)
+			goto fdev_error;
+		break;
+	default:
+		err = -EINVAL;
+		goto fdev_error;
 	}
 
 	kref_init(&data->refcount);
@@ -1946,6 +1977,9 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 	data->rpdev = rpdev;
 
 	return of_platform_populate(rdev->of_node, NULL, NULL, rdev);
+fdev_error:
+	kfree(data);
+	return err;
 }
 
 static void fastrpc_notify_users(struct fastrpc_user *user)
@@ -1972,6 +2006,9 @@ static void fastrpc_rpmsg_remove(struct rpmsg_device *rpdev)
 	if (cctx->fdevice)
 		misc_deregister(&cctx->fdevice->miscdev);
 
+	if (cctx->secure_fdevice)
+		misc_deregister(&cctx->secure_fdevice->miscdev);
+
 	of_platform_depopulate(&rpdev->dev);
 
 	cctx->rpdev = NULL;
-- 
2.21.0

[PATCH v3 06/12] misc: fastrpc: check before loading process to the DSP

[Srinivas Kandagatla]

From: Jeya R <jeyr@codeaurora.org>

Reject session if DSP domain is secure, device node is non-secure and signed
PD is requested. Secure device node can access DSP without any restriction.

Unsigned PD offload is only allowed for the DSP domain that can support
unsigned offloading.

Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c      | 33 +++++++++++++++++++++++++++++++++
 include/uapi/misc/fastrpc.h | 17 +++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 9eadbcf451ef..8e780e2d5d9d 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -243,6 +243,7 @@ struct fastrpc_channel_ctx {
 	struct fastrpc_device *secure_fdevice;
 	struct fastrpc_device *fdevice;
 	bool secure;
+	bool unsigned_support;
 };
 
 struct fastrpc_device {
@@ -263,6 +264,7 @@ struct fastrpc_user {
 
 	int tgid;
 	int pd;
+	bool is_secure_dev;
 	/* Lock for lists */
 	spinlock_t lock;
 	/* lock for allocations */
@@ -1051,6 +1053,24 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl,  u32 kernel,
 	return err;
 }
 
+static bool is_session_rejected(struct fastrpc_user *fl, bool unsigned_pd_request)
+{
+	/* Check if the device node is non-secure and channel is secure*/
+	if (!fl->is_secure_dev && fl->cctx->secure) {
+		/*
+		 * Allow untrusted applications to offload only to Unsigned PD when
+		 * channel is configured as secure and block untrusted apps on channel
+		 * that does not support unsigned PD offload
+		 */
+		if (!fl->cctx->unsigned_support || !unsigned_pd_request) {
+			dev_err(&fl->cctx->rpdev->dev, "Error: Untrusted application trying to offload to signed PD");
+			return true;
+		}
+	}
+
+	return false;
+}
+
 static int fastrpc_init_create_process(struct fastrpc_user *fl,
 					char __user *argp)
 {
@@ -1070,6 +1090,7 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
 		u32 siglen;
 	} inbuf;
 	u32 sc;
+	bool unsigned_module = false;
 
 	args = kcalloc(FASTRPC_CREATE_PROCESS_NARGS, sizeof(*args), GFP_KERNEL);
 	if (!args)
@@ -1080,6 +1101,14 @@ static int fastrpc_init_create_process(struct fastrpc_user *fl,
 		goto err;
 	}
 
+	if (init.attrs & FASTRPC_MODE_UNSIGNED_MODULE)
+		unsigned_module = true;
+
+	if (is_session_rejected(fl, unsigned_module)) {
+		err = -ECONNREFUSED;
+		goto err;
+	}
+
 	if (init.filelen > INIT_FILELEN_MAX) {
 		err = -EINVAL;
 		goto err;
@@ -1279,6 +1308,7 @@ static int fastrpc_device_open(struct inode *inode, struct file *filp)
 	INIT_LIST_HEAD(&fl->user);
 	fl->tgid = current->tgid;
 	fl->cctx = cctx;
+	fl->is_secure_dev = fdevice->secure;
 
 	fl->sctx = fastrpc_session_alloc(cctx);
 	if (!fl->sctx) {
@@ -1947,11 +1977,14 @@ 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*/
+		data->unsigned_support = false;
 		err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]);
 		if (err)
 			goto fdev_error;
 		break;
 	case CDSP_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, domains[domain_id]);
 		if (err)
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index 7cc9d342078a..f39edac20305 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -46,6 +46,23 @@ enum fastrpc_map_flags {
 	FASTRPC_MAP_MAX,
 };
 
+enum fastrpc_proc_attr {
+	/* Macro for Debug attr */
+	FASTRPC_MODE_DEBUG		= (1 << 0),
+	/* Macro for Ptrace */
+	FASTRPC_MODE_PTRACE		= (1 << 1),
+	/* Macro for CRC Check */
+	FASTRPC_MODE_CRC		= (1 << 2),
+	/* Macro for Unsigned PD */
+	FASTRPC_MODE_UNSIGNED_MODULE	= (1 << 3),
+	/* Macro for Adaptive QoS */
+	FASTRPC_MODE_ADAPTIVE_QOS	= (1 << 4),
+	/* Macro for System Process */
+	FASTRPC_MODE_SYSTEM_PROCESS	= (1 << 5),
+	/* Macro for Prvileged Process */
+	FASTRPC_MODE_PRIVILEGED		= (1 << 6),
+};
+
 struct fastrpc_invoke_args {
 	__u64 ptr;
 	__u64 length;
-- 
2.21.0

[PATCH v3 07/12] dt-bindings: misc: add fastrpc domain vmid property

[Srinivas Kandagatla]

From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>

Add fastrpc domain virtual machine IDs property. This property is used to
setup memory protection for remote processor.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 Documentation/devicetree/bindings/misc/qcom,fastrpc.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
index f9a01e2b4c96..5ec124b138a6 100644
--- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
@@ -22,6 +22,11 @@ other tasks.
 	Value type: <boolean>
 	Definition: Property to specify that dsp domain is non-secure.
 
+- qcom,vmids:
+	Usage: optional
+	Value type: <u32 array>
+	Definition: Virtual machine IDs for remote processor.
+
 - #address-cells
 	Usage: required
 	Value type: <u32>
-- 
2.21.0

[PATCH v3 08/12] misc: fastrpc: Add support to secure memory map

[Srinivas Kandagatla]

From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>

This patch adds support to secure memory allocations for DSP.
It repurposes the reserved field in struct fastrpc_invoke_args
to add attributes to invoke request, for example to setup a secure memory
map for dsp. Secure memory is assigned to DSP Virtual Machine IDs using
Qualcomm SCM calls.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c      | 65 ++++++++++++++++++++++++++++++++-----
 include/uapi/misc/fastrpc.h |  5 ++-
 2 files changed, 60 insertions(+), 10 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 8e780e2d5d9d..0090085bfbb9 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
@@ -194,6 +196,7 @@ struct fastrpc_map {
 	void *va;
 	u64 len;
 	u64 raddr;
+	u32 attr;
 	struct kref refcount;
 };
 
@@ -231,6 +234,9 @@ 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;
@@ -278,6 +284,20 @@ 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);
@@ -654,7 +674,7 @@ 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;
@@ -696,6 +716,22 @@ 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);
@@ -780,16 +816,13 @@ 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;
@@ -1123,7 +1156,7 @@ 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;
 	}
@@ -1232,7 +1265,6 @@ 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,
@@ -1373,7 +1405,6 @@ 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;
 
@@ -1943,9 +1974,10 @@ 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) {
@@ -1965,10 +1997,25 @@ 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;
diff --git a/include/uapi/misc/fastrpc.h b/include/uapi/misc/fastrpc.h
index f39edac20305..5e29f2cfa42d 100644
--- a/include/uapi/misc/fastrpc.h
+++ b/include/uapi/misc/fastrpc.h
@@ -63,11 +63,14 @@ enum fastrpc_proc_attr {
 	FASTRPC_MODE_PRIVILEGED		= (1 << 6),
 };
 
+/* Fastrpc attribute for memory protection of buffers */
+#define FASTRPC_ATTR_SECUREMAP	(1)
+
 struct fastrpc_invoke_args {
 	__u64 ptr;
 	__u64 length;
 	__s32 fd;
-	__u32 reserved;
+	__u32 attr;
 };
 
 struct fastrpc_invoke {
-- 
2.21.0

[PATCH v3 09/12] misc: fastrpc: Add helper function to get list and page

[Srinivas Kandagatla]

From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>

Add helper functions to get invoke buffer and page start pointers.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 0090085bfbb9..1c1815bed2c2 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -832,6 +832,16 @@ static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx)
 	return 0;
 }
 
+static struct fastrpc_invoke_buf *fastrpc_invoke_buf_start(union fastrpc_remote_arg *pra, int len)
+{
+	return (struct fastrpc_invoke_buf *)(&pra[len]);
+}
+
+static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf *buf, int len)
+{
+	return (struct fastrpc_phy_page *)(&buf[len]);
+}
+
 static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 {
 	struct device *dev = ctx->fl->sctx->dev;
@@ -859,9 +869,8 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 		return err;
 
 	rpra = ctx->buf->virt;
-	list = ctx->buf->virt + ctx->nscalars * sizeof(*rpra);
-	pages = ctx->buf->virt + ctx->nscalars * (sizeof(*list) +
-		sizeof(*rpra));
+	list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
+	pages = fastrpc_phy_page_start(list, ctx->nscalars);
 	args = (uintptr_t)ctx->buf->virt + metalen;
 	rlen = pkt_size - metalen;
 	ctx->rpra = rpra;
-- 
2.21.0

[PATCH v3 10/12] misc: fastrpc: Add fdlist implementation

[Srinivas Kandagatla]

From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>

Add fdlist implementation to support dma handles. fdlist is populated by
DSP if any map is no longer used and it is freed during put_args.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c | 36 ++++++++++++++++++++++++++++++++----
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 1c1815bed2c2..6052a9cb9e2c 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -319,7 +319,8 @@ static void fastrpc_map_get(struct fastrpc_map *map)
 		kref_get(&map->refcount);
 }
 
-static int fastrpc_map_find(struct fastrpc_user *fl, int fd,
+
+static int fastrpc_map_lookup(struct fastrpc_user *fl, int fd,
 			    struct fastrpc_map **ppmap)
 {
 	struct fastrpc_map *map = NULL;
@@ -327,7 +328,6 @@ static int fastrpc_map_find(struct fastrpc_user *fl, int fd,
 	mutex_lock(&fl->mutex);
 	list_for_each_entry(map, &fl->maps, node) {
 		if (map->fd == fd) {
-			fastrpc_map_get(map);
 			*ppmap = map;
 			mutex_unlock(&fl->mutex);
 			return 0;
@@ -338,6 +338,17 @@ static int fastrpc_map_find(struct fastrpc_user *fl, int fd,
 	return -ENOENT;
 }
 
+static int fastrpc_map_find(struct fastrpc_user *fl, int fd,
+			    struct fastrpc_map **ppmap)
+{
+	int ret = fastrpc_map_lookup(fl, fd, ppmap);
+
+	if (!ret)
+		fastrpc_map_get(*ppmap);
+
+	return ret;
+}
+
 static void fastrpc_buf_free(struct fastrpc_buf *buf)
 {
 	dma_free_coherent(buf->dev, buf->size, buf->virt,
@@ -410,7 +421,7 @@ static void fastrpc_context_free(struct kref *ref)
 	ctx = container_of(ref, struct fastrpc_invoke_ctx, refcount);
 	cctx = ctx->cctx;
 
-	for (i = 0; i < ctx->nscalars; i++)
+	for (i = 0; i < ctx->nbufs; i++)
 		fastrpc_map_put(ctx->maps[i]);
 
 	if (ctx->buf)
@@ -968,9 +979,19 @@ static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
 			    u32 kernel)
 {
 	struct fastrpc_remote_arg *rpra = ctx->rpra;
-	int i, inbufs;
+	struct fastrpc_user *fl = ctx->fl;
+	struct fastrpc_map *mmap = NULL;
+	struct fastrpc_invoke_buf *list;
+	struct fastrpc_phy_page *pages;
+	u64 *fdlist;
+	int i, inbufs, outbufs, handles;
 
 	inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
+	outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc);
+	handles = REMOTE_SCALARS_INHANDLES(ctx->sc) + REMOTE_SCALARS_OUTHANDLES(ctx->sc);
+	list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
+	pages = fastrpc_phy_page_start(list, ctx->nscalars);
+	fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
 
 	for (i = inbufs; i < ctx->nbufs; ++i) {
 		if (!ctx->maps[i]) {
@@ -987,6 +1008,13 @@ static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
 		}
 	}
 
+	for (i = 0; i < FASTRPC_MAX_FDLIST; i++) {
+		if (!fdlist[i])
+			break;
+		if (!fastrpc_map_lookup(fl, (int)fdlist[i], &mmap))
+			fastrpc_map_put(mmap);
+	}
+
 	return 0;
 }
 
-- 
2.21.0

[PATCH v3 11/12] misc: fastrpc: Add dma handle implementation

[Srinivas Kandagatla]

From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>

The remote arguments carry both remote buffers and dma handles. Add proper
dma handle instructions to make it compatible with DSP implementation.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/misc/fastrpc.c | 52 +++++++++++++++++++++++++++---------------
 1 file changed, 33 insertions(+), 19 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 6052a9cb9e2c..56ec7170b698 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -100,9 +100,20 @@ struct fastrpc_invoke_buf {
 	u32 pgidx;		/* index to start of contiguous region */
 };
 
-struct fastrpc_remote_arg {
-	u64 pv;
-	u64 len;
+struct fastrpc_remote_dmahandle {
+	s32 fd;		/* dma handle fd */
+	u32 offset;	/* dma handle offset */
+	u32 len;	/* dma handle length */
+};
+
+struct fastrpc_remote_buf {
+	u64 pv;		/* buffer pointer */
+	u64 len;	/* length of buffer */
+};
+
+union fastrpc_remote_arg {
+	struct fastrpc_remote_buf buf;
+	struct fastrpc_remote_dmahandle dma;
 };
 
 struct fastrpc_mmap_rsp_msg {
@@ -216,7 +227,7 @@ struct fastrpc_invoke_ctx {
 	struct work_struct put_work;
 	struct fastrpc_msg msg;
 	struct fastrpc_user *fl;
-	struct fastrpc_remote_arg *rpra;
+	union fastrpc_remote_arg *rpra;
 	struct fastrpc_map **maps;
 	struct fastrpc_buf *buf;
 	struct fastrpc_invoke_args *args;
@@ -766,7 +777,7 @@ static int fastrpc_map_create(struct fastrpc_user *fl, int fd,
  * >>>>>>  START of METADATA <<<<<<<<<
  * +---------------------------------+
  * |           Arguments             |
- * | type:(struct fastrpc_remote_arg)|
+ * | type:(union fastrpc_remote_arg)|
  * |             (0 - N)             |
  * +---------------------------------+
  * |         Invoke Buffer list      |
@@ -791,7 +802,7 @@ static int fastrpc_get_meta_size(struct fastrpc_invoke_ctx *ctx)
 {
 	int size = 0;
 
-	size = (sizeof(struct fastrpc_remote_arg) +
+	size = (sizeof(struct fastrpc_remote_buf) +
 		sizeof(struct fastrpc_invoke_buf) +
 		sizeof(struct fastrpc_phy_page)) * ctx->nscalars +
 		sizeof(u64) * FASTRPC_MAX_FDLIST +
@@ -856,7 +867,7 @@ static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf
 static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 {
 	struct device *dev = ctx->fl->sctx->dev;
-	struct fastrpc_remote_arg *rpra;
+	union fastrpc_remote_arg *rpra;
 	struct fastrpc_invoke_buf *list;
 	struct fastrpc_phy_page *pages;
 	int inbufs, i, oix, err = 0;
@@ -892,8 +903,8 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 		i = ctx->olaps[oix].raix;
 		len = ctx->args[i].length;
 
-		rpra[i].pv = 0;
-		rpra[i].len = len;
+		rpra[i].buf.pv = 0;
+		rpra[i].buf.len = len;
 		list[i].num = len ? 1 : 0;
 		list[i].pgidx = i;
 
@@ -903,7 +914,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 		if (ctx->maps[i]) {
 			struct vm_area_struct *vma = NULL;
 
-			rpra[i].pv = (u64) ctx->args[i].ptr;
+			rpra[i].buf.pv = (u64) ctx->args[i].ptr;
 			pages[i].addr = ctx->maps[i]->phys;
 
 			mmap_read_lock(current->mm);
@@ -930,7 +941,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 			if (rlen < mlen)
 				goto bail;
 
-			rpra[i].pv = args - ctx->olaps[oix].offset;
+			rpra[i].buf.pv = args - ctx->olaps[oix].offset;
 			pages[i].addr = ctx->buf->phys -
 					ctx->olaps[oix].offset +
 					(pkt_size - rlen);
@@ -944,7 +955,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 		}
 
 		if (i < inbufs && !ctx->maps[i]) {
-			void *dst = (void *)(uintptr_t)rpra[i].pv;
+			void *dst = (void *)(uintptr_t)rpra[i].buf.pv;
 			void *src = (void *)(uintptr_t)ctx->args[i].ptr;
 
 			if (!kernel) {
@@ -960,12 +971,15 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 	}
 
 	for (i = ctx->nbufs; i < ctx->nscalars; ++i) {
-		rpra[i].pv = (u64) ctx->args[i].ptr;
-		rpra[i].len = ctx->args[i].length;
 		list[i].num = ctx->args[i].length ? 1 : 0;
 		list[i].pgidx = i;
-		pages[i].addr = ctx->maps[i]->phys;
-		pages[i].size = ctx->maps[i]->size;
+		if (ctx->maps[i]) {
+			pages[i].addr = ctx->maps[i]->phys;
+			pages[i].size = ctx->maps[i]->size;
+		}
+		rpra[i].dma.fd = ctx->args[i].fd;
+		rpra[i].dma.len = ctx->args[i].length;
+		rpra[i].dma.offset = (u64) ctx->args[i].ptr;
 	}
 
 bail:
@@ -978,7 +992,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
 static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
 			    u32 kernel)
 {
-	struct fastrpc_remote_arg *rpra = ctx->rpra;
+	union fastrpc_remote_arg *rpra = ctx->rpra;
 	struct fastrpc_user *fl = ctx->fl;
 	struct fastrpc_map *mmap = NULL;
 	struct fastrpc_invoke_buf *list;
@@ -995,9 +1009,9 @@ static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
 
 	for (i = inbufs; i < ctx->nbufs; ++i) {
 		if (!ctx->maps[i]) {
-			void *src = (void *)(uintptr_t)rpra[i].pv;
+			void *src = (void *)(uintptr_t)rpra[i].buf.pv;
 			void *dst = (void *)(uintptr_t)ctx->args[i].ptr;
-			u64 len = rpra[i].len;
+			u64 len = rpra[i].buf.len;
 
 			if (!kernel) {
 				if (copy_to_user((void __user *)dst, src, len))
-- 
2.21.0

[PATCH v3 12/12] arm64: dts: qcom: add non-secure domain property to fastrpc nodes

[Srinivas Kandagatla]

From: Jeya R <jeyr@codeaurora.org>

FastRPC DSP domain would be set as secure if non-secure dsp property is not
added to the fastrpc DT node. Add this property to DT files of msm8916,
sdm845, sm8150, sm8250 and sm8350 so that nothing is broken after secure
domain patchset.

This patch is purely for backward compatibility reasons.

Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 arch/arm64/boot/dts/qcom/msm8916.dtsi | 1 +
 arch/arm64/boot/dts/qcom/sdm845.dtsi  | 2 ++
 arch/arm64/boot/dts/qcom/sm8150.dtsi  | 3 +++
 arch/arm64/boot/dts/qcom/sm8250.dtsi  | 3 +++
 arch/arm64/boot/dts/qcom/sm8350.dtsi  | 3 +++
 5 files changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 41897eb3736a..a1543012c4fa 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -1370,6 +1370,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,smd-channels = "fastrpcsmd-apps-dsp";
 					label = "adsp";
+					qcom,non-secure-domain;
 
 					#address-cells = <1>;
 					#size-cells = <0>;
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
index cfdeaa81f1bb..c9d613063966 100644
--- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
@@ -838,6 +838,7 @@
 				compatible = "qcom,fastrpc";
 				qcom,glink-channels = "fastrpcglink-apps-dsp";
 				label = "adsp";
+				qcom,non-secure-domain;
 				#address-cells = <1>;
 				#size-cells = <0>;
 
@@ -888,6 +889,7 @@
 				compatible = "qcom,fastrpc";
 				qcom,glink-channels = "fastrpcglink-apps-dsp";
 				label = "cdsp";
+				qcom,non-secure-domain;
 				#address-cells = <1>;
 				#size-cells = <0>;
 
diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index 9255982adb69..637c6a6d4054 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -1755,6 +1755,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "sdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -2997,6 +2998,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "cdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -3442,6 +3444,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "adsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index c97ea638f6aa..3be4e630c2fe 100644
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -2594,6 +2594,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "sdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -2659,6 +2660,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "cdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -4429,6 +4431,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "adsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi
index 53b39e718fb6..a9a11c747a3a 100644
--- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
@@ -1996,6 +1996,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "sdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -2065,6 +2066,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "cdsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
@@ -2367,6 +2369,7 @@
 					compatible = "qcom,fastrpc";
 					qcom,glink-channels = "fastrpcglink-apps-dsp";
 					label = "adsp";
+					qcom,non-secure-domain;
 					#address-cells = <1>;
 					#size-cells = <0>;
 
-- 
2.21.0

Re: [PATCH v3 02/12] misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP

[kernel test robot]

Hi Srinivas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc1 next-20220125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: nds32-randconfig-r014-20220126 (https://download.01.org/0day-ci/archive/20220127/202201270134.bsVprnF9-lkp@intel.com/config)
compiler: nds32le-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/b1c0b7969aa491881596e862a90a07afae4bdfd7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
        git checkout b1c0b7969aa491881596e862a90a07afae4bdfd7
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_unmap_impl':
>> drivers/misc/fastrpc.c:1544:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1544 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_map':
>> drivers/misc/fastrpc.c:1594:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
    1594 |         map->va = (void *) req.vaddrin;
         |                   ^
   drivers/misc/fastrpc.c:1599:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1599 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c:1605:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1605 |         args[1].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1608:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1608 |         args[2].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1611:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1611 |         args[3].ptr = (u64) &rsp_msg;
         |                       ^


vim +1544 drivers/misc/fastrpc.c

  1515	
  1516	static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req)
  1517	{
  1518		struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
  1519		struct fastrpc_map *map = NULL, *m;
  1520		struct fastrpc_mem_unmap_req_msg req_msg = { 0 };
  1521		int err = 0;
  1522		u32 sc;
  1523		struct device *dev = fl->sctx->dev;
  1524	
  1525		spin_lock(&fl->lock);
  1526		list_for_each_entry_safe(map, m, &fl->maps, node) {
  1527			if ((req->fd < 0 || map->fd == req->fd) && (map->raddr == req->vaddr))
  1528				break;
  1529			map = NULL;
  1530		}
  1531	
  1532		spin_unlock(&fl->lock);
  1533	
  1534		if (!map) {
  1535			dev_err(dev, "map not in list\n");
  1536			return -EINVAL;
  1537		}
  1538	
  1539		req_msg.pgid = fl->tgid;
  1540		req_msg.len = map->len;
  1541		req_msg.vaddrin = map->raddr;
  1542		req_msg.fd = map->fd;
  1543	
> 1544		args[0].ptr = (u64) &req_msg;
  1545		args[0].length = sizeof(req_msg);
  1546	
  1547		sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
  1548		err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
  1549					      &args[0]);
  1550		fastrpc_map_put(map);
  1551		if (err)
  1552			dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n",  map->fd, map->raddr);
  1553	
  1554		return err;
  1555	}
  1556	
  1557	static int fastrpc_req_mem_unmap(struct fastrpc_user *fl, char __user *argp)
  1558	{
  1559		struct fastrpc_mem_unmap req;
  1560	
  1561		if (copy_from_user(&req, argp, sizeof(req)))
  1562			return -EFAULT;
  1563	
  1564		return fastrpc_req_mem_unmap_impl(fl, &req);
  1565	}
  1566	
  1567	static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
  1568	{
  1569		struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } };
  1570		struct fastrpc_mem_map_req_msg req_msg = { 0 };
  1571		struct fastrpc_mmap_rsp_msg rsp_msg = { 0 };
  1572		struct fastrpc_mem_unmap req_unmap = { 0 };
  1573		struct fastrpc_phy_page pages = { 0 };
  1574		struct fastrpc_mem_map req;
  1575		struct device *dev = fl->sctx->dev;
  1576		struct fastrpc_map *map = NULL;
  1577		int err;
  1578		u32 sc;
  1579	
  1580		if (copy_from_user(&req, argp, sizeof(req)))
  1581			return -EFAULT;
  1582	
  1583		/* create SMMU mapping */
  1584		err = fastrpc_map_create(fl, req.fd, req.length, &map);
  1585		if (err) {
  1586			dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
  1587			return err;
  1588		}
  1589	
  1590		req_msg.pgid = fl->tgid;
  1591		req_msg.fd = req.fd;
  1592		req_msg.offset = req.offset;
  1593		req_msg.vaddrin = req.vaddrin;
> 1594		map->va = (void *) req.vaddrin;
  1595		req_msg.flags = req.flags;
  1596		req_msg.num = sizeof(pages);
  1597		req_msg.data_len = 0;
  1598	
  1599		args[0].ptr = (u64) &req_msg;
  1600		args[0].length = sizeof(req_msg);
  1601	
  1602		pages.addr = map->phys;
  1603		pages.size = map->size;
  1604	
  1605		args[1].ptr = (u64) &pages;
  1606		args[1].length = sizeof(pages);
  1607	
  1608		args[2].ptr = (u64) &pages;
  1609		args[2].length = 0;
  1610	
  1611		args[3].ptr = (u64) &rsp_msg;
  1612		args[3].length = sizeof(rsp_msg);
  1613	
  1614		sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
  1615		err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]);
  1616		if (err) {
  1617			dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n",
  1618				req.fd, req.vaddrin, map->size);
  1619			goto err_invoke;
  1620		}
  1621	
  1622		/* update the buffer to be able to deallocate the memory on the DSP */
  1623		map->raddr = rsp_msg.vaddr;
  1624	
  1625		/* let the client know the address to use */
  1626		req.vaddrout = rsp_msg.vaddr;
  1627	
  1628		if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
  1629			/* unmap the memory and release the buffer */
  1630			req_unmap.vaddr = (uintptr_t) rsp_msg.vaddr;
  1631			req_unmap.length = map->size;
  1632			fastrpc_req_mem_unmap_impl(fl, &req_unmap);
  1633			return -EFAULT;
  1634		}
  1635	
  1636		return 0;
  1637	
  1638	err_invoke:
  1639		if (map)
  1640			fastrpc_map_put(map);
  1641	
  1642		return err;
  1643	}
  1644	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 11/12] misc: fastrpc: Add dma handle implementation

[kernel test robot]

Hi Srinivas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc1 next-20220125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: hexagon-randconfig-r041-20220124 (https://download.01.org/0day-ci/archive/20220127/202201270440.GvskN5kg-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2a1b7aa016c0f4b5598806205bdfbab1ea2d92c4)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/70d5973b9373ab26b6a1ed520ee07b71c7bdba63
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
        git checkout 70d5973b9373ab26b6a1ed520ee07b71c7bdba63
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/misc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/misc/fastrpc.c:1862:13: warning: stack frame size (1256) exceeds limit (1024) in 'fastrpc_device_ioctl' [-Wframe-larger-than]
   static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
               ^
   1 warning generated.


vim +/fastrpc_device_ioctl +1862 drivers/misc/fastrpc.c

b1c0b7969aa4918 Jeya R              2022-01-26  1861  
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08 @1862  static long fastrpc_device_ioctl(struct file *file, unsigned int cmd,
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1863  				 unsigned long arg)
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1864  {
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1865  	struct fastrpc_user *fl = (struct fastrpc_user *)file->private_data;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1866  	char __user *argp = (char __user *)arg;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1867  	int err;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1868  
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1869  	switch (cmd) {
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1870  	case FASTRPC_IOCTL_INVOKE:
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1871  		err = fastrpc_invoke(fl, argp);
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1872  		break;
d73f71c7c6ee158 Srinivas Kandagatla 2019-02-08  1873  	case FASTRPC_IOCTL_INIT_ATTACH:
6010d9befc8df89 Jonathan Marek      2020-09-08  1874  		err = fastrpc_init_attach(fl, AUDIO_PD);
6010d9befc8df89 Jonathan Marek      2020-09-08  1875  		break;
6010d9befc8df89 Jonathan Marek      2020-09-08  1876  	case FASTRPC_IOCTL_INIT_ATTACH_SNS:
6010d9befc8df89 Jonathan Marek      2020-09-08  1877  		err = fastrpc_init_attach(fl, SENSORS_PD);
d73f71c7c6ee158 Srinivas Kandagatla 2019-02-08  1878  		break;
d73f71c7c6ee158 Srinivas Kandagatla 2019-02-08  1879  	case FASTRPC_IOCTL_INIT_CREATE:
d73f71c7c6ee158 Srinivas Kandagatla 2019-02-08  1880  		err = fastrpc_init_create_process(fl, argp);
d73f71c7c6ee158 Srinivas Kandagatla 2019-02-08  1881  		break;
6cffd79504ce040 Srinivas Kandagatla 2019-02-08  1882  	case FASTRPC_IOCTL_ALLOC_DMA_BUFF:
6cffd79504ce040 Srinivas Kandagatla 2019-02-08  1883  		err = fastrpc_dmabuf_alloc(fl, argp);
6cffd79504ce040 Srinivas Kandagatla 2019-02-08  1884  		break;
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1885  	case FASTRPC_IOCTL_MMAP:
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1886  		err = fastrpc_req_mmap(fl, argp);
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1887  		break;
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1888  	case FASTRPC_IOCTL_MUNMAP:
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1889  		err = fastrpc_req_munmap(fl, argp);
2419e55e532de14 Jorge Ramirez-Ortiz 2019-10-09  1890  		break;
b1c0b7969aa4918 Jeya R              2022-01-26  1891  	case FASTRPC_IOCTL_MEM_MAP:
b1c0b7969aa4918 Jeya R              2022-01-26  1892  		err = fastrpc_req_mem_map(fl, argp);
b1c0b7969aa4918 Jeya R              2022-01-26  1893  		break;
b1c0b7969aa4918 Jeya R              2022-01-26  1894  	case FASTRPC_IOCTL_MEM_UNMAP:
b1c0b7969aa4918 Jeya R              2022-01-26  1895  		err = fastrpc_req_mem_unmap(fl, argp);
b1c0b7969aa4918 Jeya R              2022-01-26  1896  		break;
a22465bb4904fac Jeya R              2022-01-26  1897  	case FASTRPC_IOCTL_GET_DSP_INFO:
a22465bb4904fac Jeya R              2022-01-26  1898  		err = fastrpc_get_dsp_info(fl, argp);
a22465bb4904fac Jeya R              2022-01-26  1899  		break;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1900  	default:
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1901  		err = -ENOTTY;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1902  		break;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1903  	}
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1904  
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1905  	return err;
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1906  }
c68cfb718c8f97b Srinivas Kandagatla 2019-02-08  1907  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 11/12] misc: fastrpc: Add dma handle implementation

[kernel test robot]

Hi Srinivas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc1 next-20220125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: arc-randconfig-r003-20220126 (https://download.01.org/0day-ci/archive/20220127/202201270412.QDMYUTEr-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/70d5973b9373ab26b6a1ed520ee07b71c7bdba63
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
        git checkout 70d5973b9373ab26b6a1ed520ee07b71c7bdba63
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/misc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_unmap_impl':
   drivers/misc/fastrpc.c:1761:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1761 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_map':
   drivers/misc/fastrpc.c:1811:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
    1811 |         map->va = (void *) req.vaddrin;
         |                   ^
   drivers/misc/fastrpc.c:1816:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1816 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c:1822:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1822 |         args[1].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1825:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1825 |         args[2].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1828:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1828 |         args[3].ptr = (u64) &rsp_msg;
         |                       ^
   drivers/misc/fastrpc.c: In function 'fastrpc_get_info_from_kernel.constprop':
>> drivers/misc/fastrpc.c:1552:1: warning: the frame size of 1076 bytes is larger than 1024 bytes [-Wframe-larger-than=]
    1552 | }
         | ^


vim +1552 drivers/misc/fastrpc.c

a22465bb4904fac Jeya R 2022-01-26  1515  
a22465bb4904fac Jeya R 2022-01-26  1516  static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
a22465bb4904fac Jeya R 2022-01-26  1517  					struct fastrpc_user *fl)
a22465bb4904fac Jeya R 2022-01-26  1518  {
a22465bb4904fac Jeya R 2022-01-26  1519  	struct fastrpc_channel_ctx *cctx = fl->cctx;
a22465bb4904fac Jeya R 2022-01-26  1520  	uint32_t attribute_id = cap->attribute_id;
a22465bb4904fac Jeya R 2022-01-26  1521  	uint32_t dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
a22465bb4904fac Jeya R 2022-01-26  1522  	unsigned long flags;
a22465bb4904fac Jeya R 2022-01-26  1523  	uint32_t domain = cap->domain;
a22465bb4904fac Jeya R 2022-01-26  1524  	int err;
a22465bb4904fac Jeya R 2022-01-26  1525  
a22465bb4904fac Jeya R 2022-01-26  1526  	spin_lock_irqsave(&cctx->lock, flags);
a22465bb4904fac Jeya R 2022-01-26  1527  	/* check if we already have queried dsp for attributes */
a22465bb4904fac Jeya R 2022-01-26  1528  	if (cctx->valid_attributes) {
a22465bb4904fac Jeya R 2022-01-26  1529  		spin_unlock_irqrestore(&cctx->lock, flags);
a22465bb4904fac Jeya R 2022-01-26  1530  		goto done;
a22465bb4904fac Jeya R 2022-01-26  1531  	}
a22465bb4904fac Jeya R 2022-01-26  1532  	spin_unlock_irqrestore(&cctx->lock, flags);
a22465bb4904fac Jeya R 2022-01-26  1533  
a22465bb4904fac Jeya R 2022-01-26  1534  	err = fastrpc_get_info_from_dsp(fl, &dsp_attributes[0], FASTRPC_MAX_DSP_ATTRIBUTES);
a22465bb4904fac Jeya R 2022-01-26  1535  	if (err == DSP_UNSUPPORTED_API) {
a22465bb4904fac Jeya R 2022-01-26  1536  		dev_info(&cctx->rpdev->dev,
a22465bb4904fac Jeya R 2022-01-26  1537  			 "Warning: DSP capabilities not supported on domain: %d\n", domain);
a22465bb4904fac Jeya R 2022-01-26  1538  		return -EOPNOTSUPP;
a22465bb4904fac Jeya R 2022-01-26  1539  	} else if (err) {
a22465bb4904fac Jeya R 2022-01-26  1540  		dev_err(&cctx->rpdev->dev, "Error: dsp information is incorrect err: %d\n", err);
a22465bb4904fac Jeya R 2022-01-26  1541  		return err;
a22465bb4904fac Jeya R 2022-01-26  1542  	}
a22465bb4904fac Jeya R 2022-01-26  1543  
a22465bb4904fac Jeya R 2022-01-26  1544  	spin_lock_irqsave(&cctx->lock, flags);
a22465bb4904fac Jeya R 2022-01-26  1545  	memcpy(cctx->dsp_attributes, dsp_attributes, sizeof(u32) * FASTRPC_MAX_DSP_ATTRIBUTES);
a22465bb4904fac Jeya R 2022-01-26  1546  	cctx->valid_attributes = true;
a22465bb4904fac Jeya R 2022-01-26  1547  	spin_unlock_irqrestore(&cctx->lock, flags);
a22465bb4904fac Jeya R 2022-01-26  1548  done:
a22465bb4904fac Jeya R 2022-01-26  1549  	cap->capability = cctx->dsp_attributes[attribute_id];
a22465bb4904fac Jeya R 2022-01-26  1550  
a22465bb4904fac Jeya R 2022-01-26  1551  	return 0;
a22465bb4904fac Jeya R 2022-01-26 @1552  }
a22465bb4904fac Jeya R 2022-01-26  1553  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 03/12] misc: fastrpc: Add support to get DSP capabilities

[kernel test robot]

Hi Srinivas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc1 next-20220125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: nds32-randconfig-r014-20220126 (https://download.01.org/0day-ci/archive/20220127/202201270435.PxFnOyYn-lkp@intel.com/config)
compiler: nds32le-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/a22465bb4904facca8fe21d23f74410cf6cb1fd0
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
        git checkout a22465bb4904facca8fe21d23f74410cf6cb1fd0
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_unmap_impl':
   drivers/misc/fastrpc.c:1646:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1646 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c: In function 'fastrpc_req_mem_map':
   drivers/misc/fastrpc.c:1696:19: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
    1696 |         map->va = (void *) req.vaddrin;
         |                   ^
   drivers/misc/fastrpc.c:1701:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1701 |         args[0].ptr = (u64) &req_msg;
         |                       ^
   drivers/misc/fastrpc.c:1707:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1707 |         args[1].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1710:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1710 |         args[2].ptr = (u64) &pages;
         |                       ^
   drivers/misc/fastrpc.c:1713:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
    1713 |         args[3].ptr = (u64) &rsp_msg;
         |                       ^
   drivers/misc/fastrpc.c: In function 'fastrpc_get_info_from_kernel.constprop':
>> drivers/misc/fastrpc.c:1437:1: warning: the frame size of 1080 bytes is larger than 1024 bytes [-Wframe-larger-than=]
    1437 | }
         | ^


vim +1437 drivers/misc/fastrpc.c

  1400	
  1401	static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
  1402						struct fastrpc_user *fl)
  1403	{
  1404		struct fastrpc_channel_ctx *cctx = fl->cctx;
  1405		uint32_t attribute_id = cap->attribute_id;
  1406		uint32_t dsp_attributes[FASTRPC_MAX_DSP_ATTRIBUTES];
  1407		unsigned long flags;
  1408		uint32_t domain = cap->domain;
  1409		int err;
  1410	
  1411		spin_lock_irqsave(&cctx->lock, flags);
  1412		/* check if we already have queried dsp for attributes */
  1413		if (cctx->valid_attributes) {
  1414			spin_unlock_irqrestore(&cctx->lock, flags);
  1415			goto done;
  1416		}
  1417		spin_unlock_irqrestore(&cctx->lock, flags);
  1418	
  1419		err = fastrpc_get_info_from_dsp(fl, &dsp_attributes[0], FASTRPC_MAX_DSP_ATTRIBUTES);
  1420		if (err == DSP_UNSUPPORTED_API) {
  1421			dev_info(&cctx->rpdev->dev,
  1422				 "Warning: DSP capabilities not supported on domain: %d\n", domain);
  1423			return -EOPNOTSUPP;
  1424		} else if (err) {
  1425			dev_err(&cctx->rpdev->dev, "Error: dsp information is incorrect err: %d\n", err);
  1426			return err;
  1427		}
  1428	
  1429		spin_lock_irqsave(&cctx->lock, flags);
  1430		memcpy(cctx->dsp_attributes, dsp_attributes, sizeof(u32) * FASTRPC_MAX_DSP_ATTRIBUTES);
  1431		cctx->valid_attributes = true;
  1432		spin_unlock_irqrestore(&cctx->lock, flags);
  1433	done:
  1434		cap->capability = cctx->dsp_attributes[attribute_id];
  1435	
  1436		return 0;
> 1437	}
  1438	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 02/12] misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP

[kernel test robot]

Hi Srinivas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on robh/for-next linux/master linus/master v5.17-rc1 next-20220125]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: csky-randconfig-s031-20220124 (https://download.01.org/0day-ci/archive/20220127/202201271240.IB5pvRUs-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/b1c0b7969aa491881596e862a90a07afae4bdfd7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
        git checkout b1c0b7969aa491881596e862a90a07afae4bdfd7
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/misc/fastrpc.c:1544:30: sparse: sparse: non size-preserving pointer to integer cast
   drivers/misc/fastrpc.c:1599:30: sparse: sparse: non size-preserving pointer to integer cast
   drivers/misc/fastrpc.c:1605:30: sparse: sparse: non size-preserving pointer to integer cast
   drivers/misc/fastrpc.c:1608:30: sparse: sparse: non size-preserving pointer to integer cast
   drivers/misc/fastrpc.c:1611:30: sparse: sparse: non size-preserving pointer to integer cast

vim +1544 drivers/misc/fastrpc.c

  1515	
  1516	static int fastrpc_req_mem_unmap_impl(struct fastrpc_user *fl, struct fastrpc_mem_unmap *req)
  1517	{
  1518		struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
  1519		struct fastrpc_map *map = NULL, *m;
  1520		struct fastrpc_mem_unmap_req_msg req_msg = { 0 };
  1521		int err = 0;
  1522		u32 sc;
  1523		struct device *dev = fl->sctx->dev;
  1524	
  1525		spin_lock(&fl->lock);
  1526		list_for_each_entry_safe(map, m, &fl->maps, node) {
  1527			if ((req->fd < 0 || map->fd == req->fd) && (map->raddr == req->vaddr))
  1528				break;
  1529			map = NULL;
  1530		}
  1531	
  1532		spin_unlock(&fl->lock);
  1533	
  1534		if (!map) {
  1535			dev_err(dev, "map not in list\n");
  1536			return -EINVAL;
  1537		}
  1538	
  1539		req_msg.pgid = fl->tgid;
  1540		req_msg.len = map->len;
  1541		req_msg.vaddrin = map->raddr;
  1542		req_msg.fd = map->fd;
  1543	
> 1544		args[0].ptr = (u64) &req_msg;
  1545		args[0].length = sizeof(req_msg);
  1546	
  1547		sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_UNMAP, 1, 0);
  1548		err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc,
  1549					      &args[0]);
  1550		fastrpc_map_put(map);
  1551		if (err)
  1552			dev_err(dev, "unmmap\tpt fd = %d, 0x%09llx error\n",  map->fd, map->raddr);
  1553	
  1554		return err;
  1555	}
  1556	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 01/12] misc: fastrpc: separate fastrpc device from channel context

[Dan Carpenter]

Hi Srinivas,

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: openrisc-randconfig-m031-20220124 (https://download.01.org/0day-ci/archive/20220127/202201271857.MGiOkhFo-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/misc/fastrpc.c:1636 fastrpc_device_register() warn: passing devm_ allocated variable to kfree. 'fdev'

vim +/fdev +1636 drivers/misc/fastrpc.c

99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1620  static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ctx *cctx,
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1621  				   const char *domain)
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1622  {
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1623  	struct fastrpc_device *fdev;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1624  	int err;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1625  
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1626  	fdev = devm_kzalloc(dev, sizeof(*fdev), GFP_KERNEL);
                                                        ^^^^^^^^^^^^^^^^^^^

99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1627  	if (!fdev)
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1628  		return -ENOMEM;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1629  
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1630  	fdev->cctx = cctx;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1631  	fdev->miscdev.minor = MISC_DYNAMIC_MINOR;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1632  	fdev->miscdev.fops = &fastrpc_fops;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1633  	fdev->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "fastrpc-%s", domain);
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1634  	err = misc_register(&fdev->miscdev);
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1635  	if (err)
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26 @1636  		kfree(fdev);
                                                                ^^^^^^^^^^^
Double free

99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1637  	else
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1638  		cctx->fdevice = fdev;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1639  
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1640  	return err;
99d9d7a1c5f2dae Srinivas Kandagatla 2022-01-26  1641  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 11/12] misc: fastrpc: Add dma handle implementation

[Dan Carpenter]

Hi Srinivas,

url:    https://github.com/0day-ci/linux/commits/Srinivas-Kandagatla/misc-fastrpc-Add-missing-DSP-FastRPC-features/20220126-215705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 515a2f507491e7c3818e74ef4f4e088c1fecb190
config: openrisc-randconfig-m031-20220124 (https://download.01.org/0day-ci/archive/20220127/202201272146.Ci8W6Th6-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

New smatch warnings:
drivers/misc/fastrpc.c:1856 fastrpc_req_mem_map() warn: variable dereferenced before check 'map' (see line 1834)

vim +/map +1856 drivers/misc/fastrpc.c

b1c0b7969aa491 Jeya R              2022-01-26  1784  static int fastrpc_req_mem_map(struct fastrpc_user *fl, char __user *argp)
b1c0b7969aa491 Jeya R              2022-01-26  1785  {
b1c0b7969aa491 Jeya R              2022-01-26  1786  	struct fastrpc_invoke_args args[4] = { [0 ... 3] = { 0 } };
b1c0b7969aa491 Jeya R              2022-01-26  1787  	struct fastrpc_mem_map_req_msg req_msg = { 0 };
b1c0b7969aa491 Jeya R              2022-01-26  1788  	struct fastrpc_mmap_rsp_msg rsp_msg = { 0 };
b1c0b7969aa491 Jeya R              2022-01-26  1789  	struct fastrpc_mem_unmap req_unmap = { 0 };
b1c0b7969aa491 Jeya R              2022-01-26  1790  	struct fastrpc_phy_page pages = { 0 };
b1c0b7969aa491 Jeya R              2022-01-26  1791  	struct fastrpc_mem_map req;
b1c0b7969aa491 Jeya R              2022-01-26  1792  	struct device *dev = fl->sctx->dev;
b1c0b7969aa491 Jeya R              2022-01-26  1793  	struct fastrpc_map *map = NULL;
b1c0b7969aa491 Jeya R              2022-01-26  1794  	int err;
b1c0b7969aa491 Jeya R              2022-01-26  1795  	u32 sc;
b1c0b7969aa491 Jeya R              2022-01-26  1796  
b1c0b7969aa491 Jeya R              2022-01-26  1797  	if (copy_from_user(&req, argp, sizeof(req)))
b1c0b7969aa491 Jeya R              2022-01-26  1798  		return -EFAULT;
b1c0b7969aa491 Jeya R              2022-01-26  1799  
b1c0b7969aa491 Jeya R              2022-01-26  1800  	/* create SMMU mapping */
e52e7cb4a5a6f3 Srinivas Kandagatla 2022-01-26  1801  	err = fastrpc_map_create(fl, req.fd, req.length, 0, &map);
b1c0b7969aa491 Jeya R              2022-01-26  1802  	if (err) {
b1c0b7969aa491 Jeya R              2022-01-26  1803  		dev_err(dev, "failed to map buffer, fd = %d\n", req.fd);
b1c0b7969aa491 Jeya R              2022-01-26  1804  		return err;
b1c0b7969aa491 Jeya R              2022-01-26  1805  	}
b1c0b7969aa491 Jeya R              2022-01-26  1806  
b1c0b7969aa491 Jeya R              2022-01-26  1807  	req_msg.pgid = fl->tgid;
b1c0b7969aa491 Jeya R              2022-01-26  1808  	req_msg.fd = req.fd;
b1c0b7969aa491 Jeya R              2022-01-26  1809  	req_msg.offset = req.offset;
b1c0b7969aa491 Jeya R              2022-01-26  1810  	req_msg.vaddrin = req.vaddrin;
b1c0b7969aa491 Jeya R              2022-01-26  1811  	map->va = (void *) req.vaddrin;
b1c0b7969aa491 Jeya R              2022-01-26  1812  	req_msg.flags = req.flags;
b1c0b7969aa491 Jeya R              2022-01-26  1813  	req_msg.num = sizeof(pages);
b1c0b7969aa491 Jeya R              2022-01-26  1814  	req_msg.data_len = 0;
b1c0b7969aa491 Jeya R              2022-01-26  1815  
b1c0b7969aa491 Jeya R              2022-01-26  1816  	args[0].ptr = (u64) &req_msg;
b1c0b7969aa491 Jeya R              2022-01-26  1817  	args[0].length = sizeof(req_msg);
b1c0b7969aa491 Jeya R              2022-01-26  1818  
b1c0b7969aa491 Jeya R              2022-01-26  1819  	pages.addr = map->phys;
b1c0b7969aa491 Jeya R              2022-01-26  1820  	pages.size = map->size;
b1c0b7969aa491 Jeya R              2022-01-26  1821  
b1c0b7969aa491 Jeya R              2022-01-26  1822  	args[1].ptr = (u64) &pages;
b1c0b7969aa491 Jeya R              2022-01-26  1823  	args[1].length = sizeof(pages);
b1c0b7969aa491 Jeya R              2022-01-26  1824  
b1c0b7969aa491 Jeya R              2022-01-26  1825  	args[2].ptr = (u64) &pages;
b1c0b7969aa491 Jeya R              2022-01-26  1826  	args[2].length = 0;
b1c0b7969aa491 Jeya R              2022-01-26  1827  
b1c0b7969aa491 Jeya R              2022-01-26  1828  	args[3].ptr = (u64) &rsp_msg;
b1c0b7969aa491 Jeya R              2022-01-26  1829  	args[3].length = sizeof(rsp_msg);
b1c0b7969aa491 Jeya R              2022-01-26  1830  
b1c0b7969aa491 Jeya R              2022-01-26  1831  	sc = FASTRPC_SCALARS(FASTRPC_RMID_INIT_MEM_MAP, 3, 1);
b1c0b7969aa491 Jeya R              2022-01-26  1832  	err = fastrpc_internal_invoke(fl, true, FASTRPC_INIT_HANDLE, sc, &args[0]);
b1c0b7969aa491 Jeya R              2022-01-26  1833  	if (err) {
b1c0b7969aa491 Jeya R              2022-01-26 @1834  		dev_err(dev, "mem mmap error, fd %d, vaddr %llx, size %lld\n",
b1c0b7969aa491 Jeya R              2022-01-26  1835  			req.fd, req.vaddrin, map->size);
b1c0b7969aa491 Jeya R              2022-01-26  1836  		goto err_invoke;
b1c0b7969aa491 Jeya R              2022-01-26  1837  	}
b1c0b7969aa491 Jeya R              2022-01-26  1838  
b1c0b7969aa491 Jeya R              2022-01-26  1839  	/* update the buffer to be able to deallocate the memory on the DSP */
b1c0b7969aa491 Jeya R              2022-01-26  1840  	map->raddr = rsp_msg.vaddr;
b1c0b7969aa491 Jeya R              2022-01-26  1841  
b1c0b7969aa491 Jeya R              2022-01-26  1842  	/* let the client know the address to use */
b1c0b7969aa491 Jeya R              2022-01-26  1843  	req.vaddrout = rsp_msg.vaddr;
b1c0b7969aa491 Jeya R              2022-01-26  1844  
b1c0b7969aa491 Jeya R              2022-01-26  1845  	if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
b1c0b7969aa491 Jeya R              2022-01-26  1846  		/* unmap the memory and release the buffer */
b1c0b7969aa491 Jeya R              2022-01-26  1847  		req_unmap.vaddr = (uintptr_t) rsp_msg.vaddr;
b1c0b7969aa491 Jeya R              2022-01-26  1848  		req_unmap.length = map->size;
b1c0b7969aa491 Jeya R              2022-01-26  1849  		fastrpc_req_mem_unmap_impl(fl, &req_unmap);
b1c0b7969aa491 Jeya R              2022-01-26  1850  		return -EFAULT;
b1c0b7969aa491 Jeya R              2022-01-26  1851  	}
b1c0b7969aa491 Jeya R              2022-01-26  1852  
b1c0b7969aa491 Jeya R              2022-01-26  1853  	return 0;
b1c0b7969aa491 Jeya R              2022-01-26  1854  
b1c0b7969aa491 Jeya R              2022-01-26  1855  err_invoke:
b1c0b7969aa491 Jeya R              2022-01-26 @1856  	if (map)
b1c0b7969aa491 Jeya R              2022-01-26  1857  		fastrpc_map_put(map);

"map" can't be NULL.

b1c0b7969aa491 Jeya R              2022-01-26  1858  
b1c0b7969aa491 Jeya R              2022-01-26  1859  	return err;
b1c0b7969aa491 Jeya R              2022-01-26  1860  }

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Re: [PATCH v3 04/12] dt-bindings: misc: add property to support non-secure DSP

[Rob Herring]

On Wed, 26 Jan 2022 13:52:56 +0000, Srinivas Kandagatla wrote:
> From: Jeya R <jeyr@codeaurora.org>
> 
> Add property to set DSP domain as non-secure.
> 
> ADSP/MDSP/SDSP are by default secured, where as CDSP can be either be
> secured/unsecured.
> non-secured Compute DSP would allow users to load unsigned process
> and run hexagon instructions, but limiting access to secured hardware
> within the DSP.
> 
> Based on this flag device nodes for secured and unsecured are created.
> 
> Signed-off-by: Jeya R <jeyr@codeaurora.org>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
>  Documentation/devicetree/bindings/misc/qcom,fastrpc.txt | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

Re: [PATCH v3 07/12] dt-bindings: misc: add fastrpc domain vmid property

[Rob Herring]

On Wed, 26 Jan 2022 13:52:59 +0000, Srinivas Kandagatla wrote:
> From: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
> 
> Add fastrpc domain virtual machine IDs property. This property is used to
> setup memory protection for remote processor.
> 
> Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> ---
>  Documentation/devicetree/bindings/misc/qcom,fastrpc.txt | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>