diff options
Diffstat (limited to 'kernel/gsp_phys_gpu.h')
| -rw-r--r-- | kernel/gsp_phys_gpu.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/kernel/gsp_phys_gpu.h b/kernel/gsp_phys_gpu.h index 73b0822..e2be7a8 100644 --- a/kernel/gsp_phys_gpu.h +++ b/kernel/gsp_phys_gpu.h @@ -3,6 +3,8 @@ #include <linux/types.h> +struct nv_vgpu_device; + /* * Physical GPU ownership (real-GSP execution backend, bring-up rung 1). * Claim is disabled unless the gsp_phys_gpu module parameter is set. @@ -429,21 +431,50 @@ bool gsp_phys_rmcall_vas_shared_value(void); int gsp_phys_gpa_to_hpa(u64 gpa, u64 *hpa_out); /* + * Per-mdev variant: translate the GPA for the named owning vgpu (a captured + * forwarding request, a held release). The vgpu's own guest-RAM record is + * authoritative; the legacy record still serves the FIRST open mdev so + * single-guest callers are unchanged. NULL keeps the historical resolution + * (first open mdev). A named vgpu whose session is closed returns -ENODEV + * rather than being retargeted at another guest. + */ +int gsp_phys_gpa_to_hpa_vgpu(struct nv_vgpu_device *vgpu, u64 gpa, + u64 *hpa_out); + +/* * Guest RAM backing-file configuration (debugfs gsp-phys-guest-ram). One - * shared file per module cycle, up to four GPA->file-offset ranges keyed by + * record per guest session, up to four GPA->file-offset ranges keyed by * gpa_base. The first configure opens the file; the same path adds/replaces * ranges, a different path is refused -EBUSY, and the ranges are dropped and - * the file closed by gsp_phys_guest_ram_clear() on physical-GPU release. The + * the file closed by gsp_phys_guest_ram_clear() on physical-GPU release (or + * gsp_phys_guest_ram_vgpu_clear() when one mdev is removed). The + * gsp_phys_guest_ram_configure() entry point configures the legacy record + * (the historical top-level debugfs write: serves the first/only open mdev); + * gsp_phys_guest_ram_configure_vgpu() binds the record to one mdev. The * state accessor is lock-safe and writes "active=0" or the active path, * range count and per-range gpa/off/size into the caller's buffer. */ int gsp_phys_guest_ram_configure(const char *path, u64 gpa_base, u64 file_offset, u64 size); +int gsp_phys_guest_ram_configure_vgpu(struct nv_vgpu_device *vgpu, + const char *path, u64 gpa_base, + u64 file_offset, u64 size); void gsp_phys_guest_ram_clear(void); +void gsp_phys_guest_ram_vgpu_clear(struct nv_vgpu_device *vgpu); bool gsp_phys_guest_ram_active(void); void gsp_phys_guest_ram_state(char *buf, size_t len); /* + * Open-mdev helpers for the per-mdev debugfs selector and the single-guest + * guards: count the mdevs whose VFIO device is open, or resolve one open + * mdev by its device name (the mdev UUID). The returned device is not + * reference-counted; the caller must only use it while that mdev's fd is + * known to be open. + */ +int gsp_phys_open_mdev_count(void); +struct nv_vgpu_device *gsp_phys_open_mdev_by_name(const char *name); + +/* * Domain shape of the physical (claimed) device, as the P6a engine path * needs it: the module programs raw host PAs into the CE page tables, so the * engine may only run when the physical device's DMA addresses ARE host PAs. |