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habanalabs: implement INFO IOCTL

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This patch implements the INFO IOCTL. That IOCTL is used by the user to
query information that is relevant/needed by the user in order to submit
deep learning jobs to Goya.

The information is divided into several categories, such as H/W IP, Events
that happened, DDR usage and more.

Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oded Gabbay
2019-02-16 00:39:23 +02:00
committed by Greg Kroah-Hartman
parent 0feaf86d4e
commit d8dd7b0a81
4 changed files with 208 additions and 1 deletions
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include/uapi/misc/habanalabs.h
+74 -1
View File
@@ -45,6 +45,62 @@ enum goya_queue_id {
GOYA_QUEUE_ID_SIZE
};
/* Opcode for management ioctl */
#define HL_INFO_HW_IP_INFO 0
#define HL_INFO_HW_EVENTS 1
#define HL_INFO_DRAM_USAGE 2
#define HL_INFO_HW_IDLE 3
#define HL_INFO_VERSION_MAX_LEN 128
struct hl_info_hw_ip_info {
__u64 sram_base_address;
__u64 dram_base_address;
__u64 dram_size;
__u32 sram_size;
__u32 num_of_events;
__u32 device_id; /* PCI Device ID */
__u32 reserved[3];
__u32 armcp_cpld_version;
__u32 psoc_pci_pll_nr;
__u32 psoc_pci_pll_nf;
__u32 psoc_pci_pll_od;
__u32 psoc_pci_pll_div_factor;
__u8 tpc_enabled_mask;
__u8 dram_enabled;
__u8 pad[2];
__u8 armcp_version[HL_INFO_VERSION_MAX_LEN];
};
struct hl_info_dram_usage {
__u64 dram_free_mem;
__u64 ctx_dram_mem;
};
struct hl_info_hw_idle {
__u32 is_idle;
__u32 pad;
};
struct hl_info_args {
/* Location of relevant struct in userspace */
__u64 return_pointer;
/*
* The size of the return value. Just like "size" in "snprintf",
* it limits how many bytes the kernel can write
*
* For hw_events array, the size should be
* hl_info_hw_ip_info.num_of_events * sizeof(__u32)
*/
__u32 return_size;
/* HL_INFO_* */
__u32 op;
/* Context ID - Currently not in use */
__u32 ctx_id;
__u32 pad;
};
/* Opcode to create a new command buffer */
#define HL_CB_OP_CREATE 0
@@ -264,6 +320,23 @@ union hl_mem_args {
struct hl_mem_out out;
};
/*
* Various information operations such as:
* - H/W IP information
* - Current dram usage
*
* The user calls this IOCTL with an opcode that describes the required
* information. The user should supply a pointer to a user-allocated memory
* chunk, which will be filled by the driver with the requested information.
*
* The user supplies the maximum amount of size to copy into the user's memory,
* in order to prevent data corruption in case of differences between the
* definitions of structures in kernel and userspace, e.g. in case of old
* userspace and new kernel driver
*/
#define HL_IOCTL_INFO \
_IOWR('H', 0x01, struct hl_info_args)
/*
* Command Buffer
* - Request a Command Buffer
@@ -365,7 +438,7 @@ union hl_mem_args {
#define HL_IOCTL_MEMORY \
_IOWR('H', 0x05, union hl_mem_args)
#define HL_COMMAND_START 0x02
#define HL_COMMAND_START 0x01
#define HL_COMMAND_END 0x06
#endif /* HABANALABS_H_ */