TI-SCI message protocol provides support for controlling the firewall
configurations available in SoC.
Introduce support for the set of TI-SCI message protocol APIs that
provide us with this capability of controlling firewalls.
Signed-off-by: Andrew F. Davis <a...@ti.com>
Reviewed-by: Tom Rini <tr...@konsulko.com>
Reviewed-by: Andreas Dannenberg <dannenb...@ti.com>
---
drivers/firmware/ti_sci.c | 177 +++++++++++++++++++++++++
drivers/firmware/ti_sci.h | 121 +++++++++++++++++
include/linux/soc/ti/ti_sci_protocol.h | 64 +++++++++
3 files changed, 362 insertions(+)
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 9148126041..534a1e6497 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -1803,6 +1803,178 @@ static int ti_sci_cmd_get_proc_boot_status(const struct
ti_sci_handle *handle,
return ret;
}
+/**
+ * ti_sci_cmd_set_fwl_region() - Request for configuring a firewall region
+ * @handle: pointer to TI SCI handle
+ * @region: region configuration parameters
+ *
+ * Return: 0 if all went well, else returns appropriate error value.
+ */
+static int ti_sci_cmd_set_fwl_region(const struct ti_sci_handle *handle,
+ const struct ti_sci_msg_fwl_region *region)
+{
+ struct ti_sci_msg_fwl_set_firewall_region_req req;
+ struct ti_sci_msg_hdr *resp;
+ struct ti_sci_info *info;
+ struct ti_sci_xfer *xfer;
+ int ret = 0;
+
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (!handle)
+ return -EINVAL;
+
+ info = handle_to_ti_sci_info(handle);
+
+ xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_SET,
+ TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+ (u32 *)&req, sizeof(req), sizeof(*resp));
+ if (IS_ERR(xfer)) {
+ ret = PTR_ERR(xfer);
+ dev_err(info->dev, "Message alloc failed(%d)\n", ret);
+ return ret;
+ }
+
+ req.fwl_id = region->fwl_id;
+ req.region = region->region;
+ req.n_permission_regs = region->n_permission_regs;
+ req.control = region->control;
+ req.permissions[0] = region->permissions[0];
+ req.permissions[1] = region->permissions[1];
+ req.permissions[2] = region->permissions[2];
+ req.start_address = region->start_address;
+ req.end_address = region->end_address;
+
+ ret = ti_sci_do_xfer(info, xfer);
+ if (ret) {
+ dev_err(info->dev, "Mbox send fail %d\n", ret);
+ return ret;
+ }
+
+ resp = (struct ti_sci_msg_hdr *)xfer->tx_message.buf;
+
+ if (!ti_sci_is_response_ack(resp))
+ return -ENODEV;
+
+ return 0;
+}
+
+/**
+ * ti_sci_cmd_get_fwl_region() - Request for getting a firewall region
+ * @handle: pointer to TI SCI handle
+ * @region: region configuration parameters
+ *
+ * Return: 0 if all went well, else returns appropriate error value.
+ */
+static int ti_sci_cmd_get_fwl_region(const struct ti_sci_handle *handle,
+ struct ti_sci_msg_fwl_region *region)
+{
+ struct ti_sci_msg_fwl_get_firewall_region_req req;
+ struct ti_sci_msg_fwl_get_firewall_region_resp *resp;
+ struct ti_sci_info *info;
+ struct ti_sci_xfer *xfer;
+ int ret = 0;
+
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (!handle)
+ return -EINVAL;
+
+ info = handle_to_ti_sci_info(handle);
+
+ xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_GET,
+ TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+ (u32 *)&req, sizeof(req), sizeof(*resp));
+ if (IS_ERR(xfer)) {
+ ret = PTR_ERR(xfer);
+ dev_err(info->dev, "Message alloc failed(%d)\n", ret);
+ return ret;
+ }
+
+ req.fwl_id = region->fwl_id;
+ req.region = region->region;
+ req.n_permission_regs = region->n_permission_regs;
+
+ ret = ti_sci_do_xfer(info, xfer);
+ if (ret) {
+ dev_err(info->dev, "Mbox send fail %d\n", ret);
+ return ret;
+ }
+
+ resp = (struct ti_sci_msg_fwl_get_firewall_region_resp
*)xfer->tx_message.buf;
+
+ if (!ti_sci_is_response_ack(resp))
+ return -ENODEV;
+
+ region->fwl_id = resp->fwl_id;
+ region->region = resp->region;
+ region->n_permission_regs = resp->n_permission_regs;
+ region->control = resp->control;
+ region->permissions[0] = resp->permissions[0];
+ region->permissions[1] = resp->permissions[1];
+ region->permissions[2] = resp->permissions[2];
+ region->start_address = resp->start_address;
+ region->end_address = resp->end_address;
+
+ return 0;
+}
+
+/**
+ * ti_sci_cmd_change_fwl_owner() - Request for changing a firewall owner
+ * @handle: pointer to TI SCI handle
+ * @region: region configuration parameters
+ *
+ * Return: 0 if all went well, else returns appropriate error value.
+ */
+static int ti_sci_cmd_change_fwl_owner(const struct ti_sci_handle *handle,
+ struct ti_sci_msg_fwl_owner *owner)
+{
+ struct ti_sci_msg_fwl_change_owner_info_req req;
+ struct ti_sci_msg_fwl_change_owner_info_resp *resp;
+ struct ti_sci_info *info;
+ struct ti_sci_xfer *xfer;
+ int ret = 0;
+
+ if (IS_ERR(handle))
+ return PTR_ERR(handle);
+ if (!handle)
+ return -EINVAL;
+
+ info = handle_to_ti_sci_info(handle);
+
+ xfer = ti_sci_setup_one_xfer(info, TISCI_MSG_FWL_GET,
+ TISCI_MSG_FWL_CHANGE_OWNER,
+ (u32 *)&req, sizeof(req), sizeof(*resp));
+ if (IS_ERR(xfer)) {
+ ret = PTR_ERR(xfer);
+ dev_err(info->dev, "Message alloc failed(%d)\n", ret);
+ return ret;
+ }
+
+ req.fwl_id = owner->fwl_id;
+ req.region = owner->region;
+ req.owner_index = owner->owner_index;
+
+ ret = ti_sci_do_xfer(info, xfer);
+ if (ret) {
+ dev_err(info->dev, "Mbox send fail %d\n", ret);
+ return ret;
+ }
+
+ resp = (struct ti_sci_msg_fwl_change_owner_info_resp
*)xfer->tx_message.buf;
+
+ if (!ti_sci_is_response_ack(resp))
+ return -ENODEV;
+
+ owner->fwl_id = resp->fwl_id;
+ owner->region = resp->region;
+ owner->owner_index = resp->owner_index;
+ owner->owner_privid = resp->owner_privid;
+ owner->owner_permission_bits = resp->owner_permission_bits;
+
+ return ret;
+}
+
/*
* ti_sci_setup_ops() - Setup the operations structures
* @info: pointer to TISCI pointer
@@ -1815,6 +1987,7 @@ static void ti_sci_setup_ops(struct ti_sci_info *info)
struct ti_sci_clk_ops *cops = &ops->clk_ops;
struct ti_sci_core_ops *core_ops = &ops->core_ops;
struct ti_sci_proc_ops *pops = &ops->proc_ops;
+ struct ti_sci_fwl_ops *fwl_ops = &ops->fwl_ops;
bops->board_config = ti_sci_cmd_set_board_config;
bops->board_config_rm = ti_sci_cmd_set_board_config_rm;
@@ -1857,6 +2030,10 @@ static void ti_sci_setup_ops(struct ti_sci_info *info)
pops->set_proc_boot_ctrl = ti_sci_cmd_set_proc_boot_ctrl;
pops->proc_auth_boot_image = ti_sci_cmd_proc_auth_boot_image;
pops->get_proc_boot_status = ti_sci_cmd_get_proc_boot_status;
+
+ fwl_ops->set_fwl_region = ti_sci_cmd_set_fwl_region;
+ fwl_ops->get_fwl_region = ti_sci_cmd_get_fwl_region;
+ fwl_ops->change_fwl_owner = ti_sci_cmd_change_fwl_owner;
}
/**
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
index 81591fb0c7..3b1f637f04 100644
--- a/drivers/firmware/ti_sci.h
+++ b/drivers/firmware/ti_sci.h
@@ -50,6 +50,10 @@
#define TISCI_MSG_PROC_AUTH_BOOT_IMIAGE 0xc120
#define TISCI_MSG_GET_PROC_BOOT_STATUS 0xc400
+#define TISCI_MSG_FWL_SET 0x9000
+#define TISCI_MSG_FWL_GET 0x9001
+#define TISCI_MSG_FWL_CHANGE_OWNER 0x9002
+
/**
* struct ti_sci_msg_hdr - Generic Message Header for All messages and
responses
* @type: Type of messages: One of TI_SCI_MSG* values
@@ -677,4 +681,121 @@ struct ti_sci_msg_resp_get_proc_boot_status {
u32 status_flags;
} __packed;
+#define FWL_MAX_PRIVID_SLOTS 3U
+
+/**
+ * struct ti_sci_msg_fwl_set_firewall_region_req - Request for configuring the
firewall permissions.
+ *
+ * @hdr: Generic Header
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number to set config info
+ * This field is unused in case of a simple firewall and
must be initialized
+ * to zero. In case of a region based firewall, this
field indicates the
+ * region in question. (index starting from 0) In case of
a channel based
+ * firewall, this field indicates the channel in question
(index starting
+ * from 0)
+ * @n_permission_regs: Number of permission registers to set
+ * @control: Contents of the firewall CONTROL register to set
+ * @permissions: Contents of the firewall PERMISSION register to set
+ * @start_address: Contents of the firewall START_ADDRESS register to set
+ * @end_address: Contents of the firewall END_ADDRESS register to set
+ */
+
+struct ti_sci_msg_fwl_set_firewall_region_req {
+ struct ti_sci_msg_hdr hdr;
+ u16 fwl_id;
+ u16 region;
+ u32 n_permission_regs;
+ u32 control;
+ u32 permissions[FWL_MAX_PRIVID_SLOTS];
+ u64 start_address;
+ u64 end_address;
+} __packed;
+
+/**
+ * struct ti_sci_msg_fwl_get_firewall_region_req - Request for retrieving the
firewall permissions
+ *
+ * @hdr: Generic Header
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number to get config info
+ * This field is unused in case of a simple firewall and
must be initialized
+ * to zero. In case of a region based firewall, this
field indicates the
+ * region in question (index starting from 0). In case of
a channel based
+ * firewall, this field indicates the channel in question
(index starting
+ * from 0).
+ * @n_permission_regs: Number of permission registers to retrieve
+ */
+struct ti_sci_msg_fwl_get_firewall_region_req {
+ struct ti_sci_msg_hdr hdr;
+ u16 fwl_id;
+ u16 region;
+ u32 n_permission_regs;
+} __packed;
+
+/**
+ * struct ti_sci_msg_fwl_get_firewall_region_resp - Response for retrieving
the firewall permissions
+ *
+ * @hdr: Generic Header
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number to set config info This field
is
+ * unused in case of a simple firewall and must be
initialized to zero. In
+ * case of a region based firewall, this field indicates
the region in
+ * question. (index starting from 0) In case of a channel
based firewall, this
+ * field indicates the channel in question (index starting
from 0)
+ * @n_permission_regs: Number of permission registers retrieved
+ * @control: Contents of the firewall CONTROL register
+ * @permissions: Contents of the firewall PERMISSION registers
+ * @start_address: Contents of the firewall START_ADDRESS register This is
not applicable for channelized firewalls.
+ * @end_address: Contents of the firewall END_ADDRESS register This is
not applicable for channelized firewalls.
+ */
+struct ti_sci_msg_fwl_get_firewall_region_resp {
+ struct ti_sci_msg_hdr hdr;
+ u16 fwl_id;
+ u16 region;
+ u32 n_permission_regs;
+ u32 control;
+ u32 permissions[FWL_MAX_PRIVID_SLOTS];
+ u64 start_address;
+ u64 end_address;
+} __packed;
+
+/**
+ * struct ti_sci_msg_fwl_change_owner_info_req - Request for a firewall owner
change
+ *
+ * @hdr: Generic Header
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number if applicable
+ * @owner_index: New owner index to transfer ownership to
+ */
+struct ti_sci_msg_fwl_change_owner_info_req {
+ struct ti_sci_msg_hdr hdr;
+ u16 fwl_id;
+ u16 region;
+ u8 owner_index;
+} __packed;
+
+/**
+ * struct ti_sci_msg_fwl_change_owner_info_resp - Response for a firewall
owner change
+ *
+ * @hdr: Generic Header
+ *
+ * @fwl_id: Firewall ID specified in request
+ * @region: Region or channel number specified in request
+ * @owner_index: Owner index specified in request
+ * @owner_privid: New owner priv-ID returned by DMSC.
+ * @owner_permission_bits: New owner permission bits returned by DMSC.
+ */
+struct ti_sci_msg_fwl_change_owner_info_resp {
+ struct ti_sci_msg_hdr hdr;
+ u16 fwl_id;
+ u16 region;
+ u8 owner_index;
+ u8 owner_privid;
+ u16 owner_permission_bits;
+} __packed;
+
#endif /* __TI_SCI_H */
diff --git a/include/linux/soc/ti/ti_sci_protocol.h
b/include/linux/soc/ti/ti_sci_protocol.h
index 90d5053636..f3c5b72860 100644
--- a/include/linux/soc/ti/ti_sci_protocol.h
+++ b/include/linux/soc/ti/ti_sci_protocol.h
@@ -257,6 +257,68 @@ struct ti_sci_proc_ops {
u32 *sts_flags);
};
+/**
+ * struct ti_sci_msg_fwl_region_cfg - Request and Response for firewalls
settings
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number to set config info
+ * This field is unused in case of a simple firewall and
must be initialized
+ * to zero. In case of a region based firewall, this
field indicates the
+ * region in question. (index starting from 0) In case of
a channel based
+ * firewall, this field indicates the channel in question
(index starting
+ * from 0)
+ * @n_permission_regs: Number of permission registers to set
+ * @control: Contents of the firewall CONTROL register to set
+ * @permissions: Contents of the firewall PERMISSION register to set
+ * @start_address: Contents of the firewall START_ADDRESS register to set
+ * @end_address: Contents of the firewall END_ADDRESS register to set
+ */
+struct ti_sci_msg_fwl_region {
+ u16 fwl_id;
+ u16 region;
+ u32 n_permission_regs;
+ u32 control;
+ u32 permissions[3];
+ u64 start_address;
+ u64 end_address;
+} __packed;
+
+/**
+ * \brief Request and Response for firewall owner change
+ *
+ * @fwl_id: Firewall ID in question
+ * @region: Region or channel number to set config info
+ * This field is unused in case of a simple firewall and
must be initialized
+ * to zero. In case of a region based firewall, this
field indicates the
+ * region in question. (index starting from 0) In case of
a channel based
+ * firewall, this field indicates the channel in question
(index starting
+ * from 0)
+ * @n_permission_regs: Number of permission registers <= 3
+ * @control: Control register value for this region
+ * @owner_index: New owner index to change to. Owner indexes are setup
in DMSC firmware boot configuration data
+ * @owner_privid: New owner priv-id, used to lookup owner_index is not
known, must be set to zero otherwise
+ * @owner_permission_bits: New owner permission bits
+ */
+struct ti_sci_msg_fwl_owner {
+ u16 fwl_id;
+ u16 region;
+ u8 owner_index;
+ u8 owner_privid;
+ u16 owner_permission_bits;
+} __packed;
+
+/**
+ * struct ti_sci_fwl_ops - Firewall specific operations
+ * @set_fwl_region: Request for configuring the firewall permissions.
+ * @get_fwl_region: Request for retrieving the firewall permissions.
+ * @change_fwl_owner: Request for a change of firewall owner.
+ */
+struct ti_sci_fwl_ops {
+ int (*set_fwl_region)(const struct ti_sci_handle *handle, const struct
ti_sci_msg_fwl_region *region);
+ int (*get_fwl_region)(const struct ti_sci_handle *handle, struct
ti_sci_msg_fwl_region *region);
+ int (*change_fwl_owner)(const struct ti_sci_handle *handle, struct
ti_sci_msg_fwl_owner *owner);
+};
+
/**
* struct ti_sci_ops - Function support for TI SCI
* @board_ops: Miscellaneous operations
@@ -264,6 +326,7 @@ struct ti_sci_proc_ops {
* @clk_ops: Clock specific operations
* @core_ops: Core specific operations
* @proc_ops: Processor specific operations
+ * @fw_ops: Firewall specific operations
*/
struct ti_sci_ops {
struct ti_sci_board_ops board_ops;
@@ -271,6 +334,7 @@ struct ti_sci_ops {
struct ti_sci_clk_ops clk_ops;
struct ti_sci_core_ops core_ops;
struct ti_sci_proc_ops proc_ops;
+ struct ti_sci_fwl_ops fwl_ops;
};
/**
--
2.19.1
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