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[PATCH 03/17] pnv_phb3.h: change TYPE_PNV_PHB3_ROOT_BUS name
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH 03/17] pnv_phb3.h: change TYPE_PNV_PHB3_ROOT_BUS name |
Date: |
Tue, 28 Dec 2021 16:37:52 -0300 |
The TYPE_PNV_PHB3_ROOT_BUS name is used as the default bus name when
the dev has no 'id'. However, pnv-phb3-root-bus is a bit too long to be
used as a bus name.
Most common QEMU buses and PCI controllers are named based on their bus
type (e.g. pSeries spapr-pci-host-bridge is called 'pci'). The most
common name for a PCIE bus controller in QEMU is 'pcie'. Naming it
'pcie' would break the documented use of the pnv-phb3 device, since
'pcie.0' would now refer to the root bus instead of the first root port.
There's nothing particularly wrong with the 'root-bus' name used before,
aside from the fact that 'root-bus' is being used for pnv-phb3 and
pnv-phb4 created buses, which is not quite correct since these buses
aren't implemented the same way in QEMU - you can't plug a
pnv-phb4-root-port into a pnv-phb3 root bus, for example.
This patch renames it as 'phb3-root', which is a compromise between the
existing and the previously used name. Creating 3 phbs without ID will
result in an "info qtree" output similar to this:
bus: main-system-bus
type System
dev: pnv-phb3, id ""
index = 2 (0x2)
chip-id = 0 (0x0)
x-config-reg-migration-enabled = true
bypass-iommu = false
bus: phb3-root.2
type phb3-root
dev: pnv-phb3, id ""
index = 1 (0x1)
chip-id = 0 (0x0)
x-config-reg-migration-enabled = true
bypass-iommu = false
bus: phb3-root.1
type phb3-root
dev: pnv-phb3, id ""
index = 0 (0x0)
chip-id = 0 (0x0)
x-config-reg-migration-enabled = true
bypass-iommu = false
bus: phb3-root.0
type phb3-root
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
include/hw/pci-host/pnv_phb3.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/hw/pci-host/pnv_phb3.h b/include/hw/pci-host/pnv_phb3.h
index 2e423c3890..658ee40e13 100644
--- a/include/hw/pci-host/pnv_phb3.h
+++ b/include/hw/pci-host/pnv_phb3.h
@@ -105,7 +105,7 @@ struct PnvPBCQState {
/*
* PHB3 PCIe Root port
*/
-#define TYPE_PNV_PHB3_ROOT_BUS "pnv-phb3-root-bus"
+#define TYPE_PNV_PHB3_ROOT_BUS "phb3-root"
#define TYPE_PNV_PHB3_ROOT_PORT "pnv-phb3-root-port"
--
2.33.1
- [PATCH 00/17] ppc/pnv: enable pnv-phb4 user devices, Daniel Henrique Barboza, 2021/12/28
- [PATCH 01/17] pnv_phb3.c: add unique chassis and slot for pnv_phb3_root_port, Daniel Henrique Barboza, 2021/12/28
- [PATCH 02/17] pnv_phb3.c: do not set 'root-bus' as bus name, Daniel Henrique Barboza, 2021/12/28
- [PATCH 06/17] pnv_phb4.c: attach default root port in phb4 realize(), Daniel Henrique Barboza, 2021/12/28
- [PATCH 04/17] pnv_phb4.c: add unique chassis and slot for pnv_phb4_root_port, Daniel Henrique Barboza, 2021/12/28
- [PATCH 07/17] pnv_phb4.c: check if root port exists in rc_config functions, Daniel Henrique Barboza, 2021/12/28
- [PATCH 03/17] pnv_phb3.h: change TYPE_PNV_PHB3_ROOT_BUS name,
Daniel Henrique Barboza <=
- [PATCH 08/17] pnv_phb4.c: introduce pnv_phb4_set_stack_phb_props(), Daniel Henrique Barboza, 2021/12/28
- [PATCH 09/17] pnv_phb4_pec.c: move pnv_pec_phb_offset() to pnv_phb4.c, Daniel Henrique Barboza, 2021/12/28
- [PATCH 05/17] pnv.c: simplify pnv_phb_attach_root_port(), Daniel Henrique Barboza, 2021/12/28
- [PATCH 11/17] pnv_phb4_pec.c: use pnv_pec_get_phb_id() in pnv_pec_dt_xscom(), Daniel Henrique Barboza, 2021/12/28
- [PATCH 13/17] pnv_phb4.h: turn phb into a pointer in struct PnvPhb4PecStack, Daniel Henrique Barboza, 2021/12/28
- [PATCH 14/17] Revert "ppc/pnv: Introduce support for user created PHB4 devices", Daniel Henrique Barboza, 2021/12/28
- [PATCH 15/17] ppc/pnv: Introduce user creatable pnv-phb4 devices, Daniel Henrique Barboza, 2021/12/28
- [PATCH 10/17] pnv_phb4.c: introduce pnv_pec_init_stack_xscom(), Daniel Henrique Barboza, 2021/12/28
- [PATCH 12/17] pnv_phb4_pec.c: use 'default_enabled()' to init stack->phb, Daniel Henrique Barboza, 2021/12/28
- [PATCH 16/17] pnv_phb4.c: do not set 'root-bus' as bus name, Daniel Henrique Barboza, 2021/12/28