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ppc/pnv: Introduce a num_pecs class attribute for PHB4 PEC devices

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POWER9 processor comes with 3 PHB4 PEC (PCI Express Controller) and
each PEC can have several PHBs :

  * PEC0 provides 1 PHB  (PHB0)
  * PEC1 provides 2 PHBs (PHB1 and PHB2)
  * PEC2 provides 3 PHBs (PHB3, PHB4 and PHB5)

A num_pecs class attribute represents better the logic units of the
POWER9 chip. Use that instead of num_phbs which fits POWER8 chips.
This will ease adding support for user created devices.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20211213132830.108372-8-clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Cédric Le Goater 2021-12-17 17:57:19 +01:00
parent 2ff73dda02
commit 422fd92e61
2 changed files with 10 additions and 11 deletions
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2
include/hw/ppc/pnv.h
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@ -53,6 +53,7 @@ struct PnvChip {
PnvCore **cores;
uint32_t num_phbs;
uint32_t num_pecs;
MemoryRegion xscom_mmio;
MemoryRegion xscom;
@ -136,6 +137,7 @@ struct PnvChipClass {
uint64_t chip_cfam_id;
uint64_t cores_mask;
uint32_t num_phbs;
uint32_t num_pecs;
DeviceRealize parent_realize;