From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/remoteproc.h | 158 +++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 137 insertions(+), 21 deletions(-)
diff --git a/kernel/include/linux/remoteproc.h b/kernel/include/linux/remoteproc.h
index e3c5d85..fa1e7f6 100644
--- a/kernel/include/linux/remoteproc.h
+++ b/kernel/include/linux/remoteproc.h
@@ -38,6 +38,7 @@
#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/virtio.h>
+#include <linux/cdev.h>
#include <linux/completion.h>
#include <linux/idr.h>
#include <linux/of.h>
@@ -73,7 +74,7 @@
u32 ver;
u32 num;
u32 reserved[2];
- u32 offset[0];
+ u32 offset[];
} __packed;
/**
@@ -87,7 +88,7 @@
*/
struct fw_rsc_hdr {
u32 type;
- u8 data[0];
+ u8 data[];
} __packed;
/**
@@ -100,7 +101,9 @@
* the remote processor will be writing logs.
* @RSC_VDEV: declare support for a virtio device, and serve as its
* virtio header.
- * @RSC_LAST: just keep this one at the end
+ * @RSC_LAST: just keep this one at the end of standard resources
+ * @RSC_VENDOR_START: start of the vendor specific resource types range
+ * @RSC_VENDOR_END: end of the vendor specific resource types range
*
* For more details regarding a specific resource type, please see its
* dedicated structure below.
@@ -111,11 +114,13 @@
* please update it as needed.
*/
enum fw_resource_type {
- RSC_CARVEOUT = 0,
- RSC_DEVMEM = 1,
- RSC_TRACE = 2,
- RSC_VDEV = 3,
- RSC_LAST = 4,
+ RSC_CARVEOUT = 0,
+ RSC_DEVMEM = 1,
+ RSC_TRACE = 2,
+ RSC_VDEV = 3,
+ RSC_LAST = 4,
+ RSC_VENDOR_START = 128,
+ RSC_VENDOR_END = 512,
};
#define FW_RSC_ADDR_ANY (-1)
@@ -302,54 +307,96 @@
u8 status;
u8 num_of_vrings;
u8 reserved[2];
- struct fw_rsc_vdev_vring vring[0];
+ struct fw_rsc_vdev_vring vring[];
} __packed;
+
+struct rproc;
/**
* struct rproc_mem_entry - memory entry descriptor
* @va: virtual address
+ * @is_iomem: io memory
* @dma: dma address
* @len: length, in bytes
* @da: device address
+ * @release: release associated memory
* @priv: associated data
+ * @name: associated memory region name (optional)
* @node: list node
+ * @rsc_offset: offset in resource table
+ * @flags: iommu protection flags
+ * @of_resm_idx: reserved memory phandle index
+ * @alloc: specific memory allocator function
*/
struct rproc_mem_entry {
void *va;
+ bool is_iomem;
dma_addr_t dma;
- int len;
+ size_t len;
u32 da;
void *priv;
+ char name[32];
struct list_head node;
+ u32 rsc_offset;
+ u32 flags;
+ u32 of_resm_idx;
+ int (*alloc)(struct rproc *rproc, struct rproc_mem_entry *mem);
+ int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
};
-struct rproc;
struct firmware;
/**
+ * enum rsc_handling_status - return status of rproc_ops handle_rsc hook
+ * @RSC_HANDLED: resource was handled
+ * @RSC_IGNORED: resource was ignored
+ */
+enum rsc_handling_status {
+ RSC_HANDLED = 0,
+ RSC_IGNORED = 1,
+};
+
+/**
* struct rproc_ops - platform-specific device handlers
+ * @prepare: prepare device for code loading
+ * @unprepare: unprepare device after stop
* @start: power on the device and boot it
* @stop: power off the device
+ * @attach: attach to a device that his already powered up
* @kick: kick a virtqueue (virtqueue id given as a parameter)
* @da_to_va: optional platform hook to perform address translations
+ * @parse_fw: parse firmware to extract information (e.g. resource table)
+ * @handle_rsc: optional platform hook to handle vendor resources. Should return
+ * RSC_HANDLED if resource was handled, RSC_IGNORED if not handled and a
+ * negative value on error
* @load_rsc_table: load resource table from firmware image
* @find_loaded_rsc_table: find the loaded resouce table
- * @load: load firmeware to memory, where the remote processor
+ * @load: load firmware to memory, where the remote processor
* expects to find it
* @sanity_check: sanity check the fw image
* @get_boot_addr: get boot address to entry point specified in firmware
+ * @panic: optional callback to react to system panic, core will delay
+ * panic at least the returned number of milliseconds
+ * @coredump: collect firmware dump after the subsystem is shutdown
*/
struct rproc_ops {
+ int (*prepare)(struct rproc *rproc);
+ int (*unprepare)(struct rproc *rproc);
int (*start)(struct rproc *rproc);
int (*stop)(struct rproc *rproc);
+ int (*attach)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);
- void * (*da_to_va)(struct rproc *rproc, u64 da, int len);
+ void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);
+ int (*handle_rsc)(struct rproc *rproc, u32 rsc_type, void *rsc,
+ int offset, int avail);
struct resource_table *(*find_loaded_rsc_table)(
struct rproc *rproc, const struct firmware *fw);
int (*load)(struct rproc *rproc, const struct firmware *fw);
int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
- u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
+ u64 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
+ unsigned long (*panic)(struct rproc *rproc);
+ void (*coredump)(struct rproc *rproc);
};
/**
@@ -360,6 +407,8 @@
* @RPROC_RUNNING: device is up and running
* @RPROC_CRASHED: device has crashed; need to start recovery
* @RPROC_DELETED: device is deleted
+ * @RPROC_DETACHED: device has been booted by another entity and waiting
+ * for the core to attach to it
* @RPROC_LAST: just keep this one at the end
*
* Please note that the values of these states are used as indices
@@ -374,7 +423,8 @@
RPROC_RUNNING = 2,
RPROC_CRASHED = 3,
RPROC_DELETED = 4,
- RPROC_LAST = 5,
+ RPROC_DETACHED = 5,
+ RPROC_LAST = 6,
};
/**
@@ -395,10 +445,27 @@
};
/**
+ * enum rproc_dump_mechanism - Coredump options for core
+ * @RPROC_COREDUMP_DISABLED: Don't perform any dump
+ * @RPROC_COREDUMP_ENABLED: Copy dump to separate buffer and carry on with
+ recovery
+ * @RPROC_COREDUMP_INLINE: Read segments directly from device memory. Stall
+ recovery until all segments are read
+ */
+enum rproc_dump_mechanism {
+ RPROC_COREDUMP_DISABLED,
+ RPROC_COREDUMP_ENABLED,
+ RPROC_COREDUMP_INLINE,
+};
+
+/**
* struct rproc_dump_segment - segment info from ELF header
* @node: list node related to the rproc segment list
* @da: device address of the segment
* @size: size of the segment
+ * @priv: private data associated with the dump_segment
+ * @dump: custom dump function to fill device memory segment associated
+ * with coredump
*/
struct rproc_dump_segment {
struct list_head node;
@@ -406,6 +473,9 @@
dma_addr_t da;
size_t size;
+ void *priv;
+ void (*dump)(struct rproc *rproc, struct rproc_dump_segment *segment,
+ void *dest, size_t offset, size_t size);
loff_t offset;
};
@@ -420,6 +490,7 @@
* @dev: virtual device for refcounting and common remoteproc behavior
* @power: refcount of users who need this rproc powered up
* @state: state of the device
+ * @dump_conf: Currently selected coredump configuration
* @lock: lock which protects concurrent manipulations of the rproc
* @dbg_dir: debugfs directory of this rproc device
* @traces: list of trace buffers
@@ -439,25 +510,31 @@
* @cached_table: copy of the resource table
* @table_sz: size of @cached_table
* @has_iommu: flag to indicate if remote processor is behind an MMU
+ * @auto_boot: flag to indicate if remote processor should be auto-started
+ * @autonomous: true if an external entity has booted the remote processor
* @dump_segments: list of segments in the firmware
+ * @nb_vdev: number of vdev currently handled by rproc
+ * @char_dev: character device of the rproc
+ * @cdev_put_on_release: flag to indicate if remoteproc should be shutdown on @char_dev release
*/
struct rproc {
struct list_head node;
struct iommu_domain *domain;
const char *name;
- char *firmware;
+ const char *firmware;
void *priv;
struct rproc_ops *ops;
struct device dev;
atomic_t power;
unsigned int state;
+ enum rproc_dump_mechanism dump_conf;
struct mutex lock;
struct dentry *dbg_dir;
struct list_head traces;
int num_traces;
struct list_head carveouts;
struct list_head mappings;
- u32 bootaddr;
+ u64 bootaddr;
struct list_head rvdevs;
struct list_head subdevs;
struct idr notifyids;
@@ -471,7 +548,13 @@
size_t table_sz;
bool has_iommu;
bool auto_boot;
+ bool autonomous;
struct list_head dump_segments;
+ int nb_vdev;
+ u8 elf_class;
+ u16 elf_machine;
+ struct cdev cdev;
+ bool cdev_put_on_release;
};
/**
@@ -499,7 +582,6 @@
/**
* struct rproc_vring - remoteproc vring state
* @va: virtual address
- * @dma: dma address
* @len: length, in bytes
* @da: device address
* @align: vring alignment
@@ -509,7 +591,6 @@
*/
struct rproc_vring {
void *va;
- dma_addr_t dma;
int len;
u32 da;
u32 align;
@@ -528,18 +609,20 @@
* @vdev: the virio device
* @vring: the vrings for this vdev
* @rsc_offset: offset of the vdev's resource entry
+ * @index: vdev position versus other vdev declared in resource table
*/
struct rproc_vdev {
struct kref refcount;
struct rproc_subdev subdev;
+ struct device dev;
unsigned int id;
struct list_head node;
struct rproc *rproc;
- struct virtio_device vdev;
struct rproc_vring vring[RVDEV_NUM_VRINGS];
u32 rsc_offset;
+ u32 index;
};
struct rproc *rproc_get_by_phandle(phandle phandle);
@@ -552,15 +635,48 @@
int rproc_add(struct rproc *rproc);
int rproc_del(struct rproc *rproc);
void rproc_free(struct rproc *rproc);
+void rproc_resource_cleanup(struct rproc *rproc);
+
+struct rproc *devm_rproc_alloc(struct device *dev, const char *name,
+ const struct rproc_ops *ops,
+ const char *firmware, int len);
+int devm_rproc_add(struct device *dev, struct rproc *rproc);
+
+void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
+
+struct rproc_mem_entry *
+rproc_mem_entry_init(struct device *dev,
+ void *va, dma_addr_t dma, size_t len, u32 da,
+ int (*alloc)(struct rproc *, struct rproc_mem_entry *),
+ int (*release)(struct rproc *, struct rproc_mem_entry *),
+ const char *name, ...);
+
+struct rproc_mem_entry *
+rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
+ u32 da, const char *name, ...);
int rproc_boot(struct rproc *rproc);
void rproc_shutdown(struct rproc *rproc);
+int rproc_set_firmware(struct rproc *rproc, const char *fw_name);
void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);
+
+/* from remoteproc_coredump.c */
+void rproc_coredump_cleanup(struct rproc *rproc);
+void rproc_coredump(struct rproc *rproc);
+void rproc_coredump_using_sections(struct rproc *rproc);
int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size);
+int rproc_coredump_add_custom_segment(struct rproc *rproc,
+ dma_addr_t da, size_t size,
+ void (*dumpfn)(struct rproc *rproc,
+ struct rproc_dump_segment *segment,
+ void *dest, size_t offset,
+ size_t size),
+ void *priv);
+int rproc_coredump_set_elf_info(struct rproc *rproc, u8 class, u16 machine);
static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev)
{
- return container_of(vdev, struct rproc_vdev, vdev);
+ return container_of(vdev->dev.parent, struct rproc_vdev, dev);
}
static inline struct rproc *vdev_to_rproc(struct virtio_device *vdev)
--
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