tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NVIDIA: SAUCE: drivers: tegra: virt: support hvc call to get nvlog buffer

Browse Source 
http://nvbugs/4985113
http://nvbugs/4551265

Signed-off-by: Manish Bhardwaj <mbhardwaj@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Tested-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vishwaroop A <va@nvidia.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
This commit is contained in:
Manish Bhardwaj
2024-12-20 09:39:43 +00:00
committed by Noah Wager
parent b4275efbf8
commit ccd02d5289
1 changed files with 56 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/soc/tegra/virt/syscalls.h
+56
View File
@@ -18,11 +18,13 @@
#define HVC_NR_READ_HYP_INFO 9
#define HVC_NR_GUEST_RESET 10
#define HVC_NR_SYSINFO_IPA 13
#define HVC_NR_READ_VM_INFO 16
#define HVC_NR_TRACE_GET_EVENT_MASK 0x8003U
#define HVC_NR_TRACE_SET_EVENT_MASK 0x8004U
#define GUEST_PRIMARY 0
#define GUEST_IVC_SERVER 0
#define MAX_NVLOG_PRODUCERS 32U
#define HVC_NR_CPU_FREQ 0xC6000022
#define NGUESTS_MAX 16
@@ -33,6 +35,45 @@
#include <linux/types.h>
#endif
/*
* @brief Structure describing a single NvLog producer. A producer can have
* multiple buffers (if it has multiple threads) and the buffers are stored
* contiguously in memory as an array. This structure provides the base
* address, stride, and length of the array so that the consumer can locate all
* of the buffers belonging to the producer.
*/
struct nvlog_producer {
/* Base IPA of an array of NvLog buffers belonging to the producer. */
uint64_t ipa;
/* Size of the IPA region containing the NvLog buffer array. */
uint64_t region_size;
/* Size of a single NvLog buffer. This is the stride of the array of
* NvLog buffers belonging to the producer.
*/
uint64_t buf_size;
/* Number of NvLog buffers belonging to the producer. */
uint64_t buf_count;
/* Name of the NvLog producer. */
char name[32];
};
/*
* Data structure for the VM Information Region.
*
* The Intermediate Physical Address (IPA) of this structure is returned by the
* hyp_read_vm_info Hypercall.
*/
struct vm_info_region {
/*
* Table of NvLog producers.
*
* This table is only populated for VMs that have the 'log_access' PCT flag
* set. Valid entries in the table have non-zero 'region_ipa', 'buf_size',
* and buf_count' fields.
*/
struct nvlog_producer nvlog_producers[MAX_NVLOG_PRODUCERS];
};
struct tegra_hv_queue_data {
uint32_t id; /* IVC id */
uint32_t peers[2];
@@ -212,6 +253,21 @@ static inline int hyp_read_nguests(unsigned int *nguests)
return (int)r0;
}
__attribute__((no_sanitize_address))
static inline int hyp_read_vm_info(uint64_t *vm_info_region_pa)
{
register uint64_t r0 asm("x0");
register uint64_t r1 asm("x1");
asm("hvc %2"
: "=r"(r0), "=r"(r1)
: "i"(HVC_NR_READ_VM_INFO)
: "x2", "x3", _X4_X17);
*vm_info_region_pa = r1;
return (int)r0;
}
__attribute__((no_sanitize_address))
static inline int hyp_read_ivc_info(uint64_t *ivc_info_page_pa)
{