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dm: add ssram support for user VM

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Hook ssram init && de-init functions to vdev
 devices lifecycle management:

 1) initialize ssram when vdev devices
    are initialized.

 2) de-initialize ssram when vdev devices
    are reset or destroyed.

 notes:
 ssram configuration data can be released only when
 user VM shutdown, hence it can't be done in deinit_vssram().

  - VM reboot:
    do deinit_vssram() only.

  - VM shutdown:
    do both deinit_vssram() and clean_vssram_config().

Tracked-On: #7010
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Wang Yu1 <yu1.wang@intel.com>
This commit is contained in:
Yonghua Huang 2022-01-06 17:27:43 +03:00 committed by acrnsi-robot
parent 5ff532b08c
commit 6bf70e3e35
3 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
devicemodel/core/main.c
View File

@ -484,6 +484,9 @@ vm_init_vdevs(struct vmctx *ctx)
if (debugexit_enabled)
init_debugexit();
if ((ssram) && (init_vssram(ctx) < 0))
goto ssram_fail;
ret = monitor_init(ctx);
if (ret < 0)
goto monitor_fail;
@ -505,6 +508,9 @@ pci_fail:
deinit_mmio_devs(ctx);
mmio_dev_fail:
monitor_close();
ssram_fail:
if (ssram)
deinit_vssram(ctx);
monitor_fail:
if (debugexit_enabled)
deinit_debugexit();
@ -539,6 +545,9 @@ vm_deinit_vdevs(struct vmctx *ctx)
if (debugexit_enabled)
deinit_debugexit();
if (ssram)
deinit_vssram(ctx);
vhpet_deinit(ctx);
vpit_deinit(ctx);
vrtc_deinit(ctx);
@ -574,6 +583,9 @@ vm_reset_vdevs(struct vmctx *ctx)
if (debugexit_enabled)
deinit_debugexit();
if (ssram)
deinit_vssram(ctx);
vhpet_deinit(ctx);
vpit_deinit(ctx);
vrtc_deinit(ctx);
@ -591,6 +603,9 @@ vm_reset_vdevs(struct vmctx *ctx)
if (debugexit_enabled)
init_debugexit();
if (ssram)
init_vssram(ctx);
ioapic_init(ctx);
init_pci(ctx);

22
devicemodel/hw/platform/vssram/vssram.c
View File

@ -1302,6 +1302,28 @@ exit:
}
return status;
}
/**
* @brief De-initialize software SRAM device
*
* @param ctx Pointer to context of user VM.
*
* @return void
*/
void deinit_vssram(struct vmctx *ctx)
{
vssram_close_buffers();
if (vssram_buffers) {
free(vssram_buffers);
vssram_buffers = NULL;
}
if (vrtct_table != NULL) {
free(vrtct_table);
vrtct_table = NULL;
}
}
/**
* @brief Cleanup vSSRAM configurations resource.
*

1
devicemodel/include/vssram.h
View File

@ -52,6 +52,7 @@ uint64_t get_vssram_size(void);
uint8_t *get_vssram_vrtct(void);
void clean_vssram_configs(void);
int init_vssram(struct vmctx *ctx);
void deinit_vssram(struct vmctx *ctx);
int parse_vssram_buf_params(const char *opt);
#endif /* RTCT_H */