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| author | Thomas Petazzoni <thomas.petazzoni@bootlin.com> | 2019-02-20 10:48:40 +0100 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2019-02-22 10:47:30 +0000 |
| commit | 59f81c35e0df840f7112cb296dde48df84a67c79 (patch) | |
| tree | 236d36aa6f21f2908153a0c44cc38fcfddf372bf /drivers/pci/pci-bridge-emul.h | |
| parent | bfeffd155283772bbe78c6a05dec7c0128ee500c (diff) | |
| download | linux-59f81c35e0df840f7112cb296dde48df84a67c79.tar.gz | |
PCI: pci-bridge-emul: Create per-bridge copy of register behavior
The behavior of the different registers of the PCI-to-PCI bridge is
currently encoded in two global arrays, shared by all instances of
PCI-to-PCI bridge emulation.
However, we will need to tweak the behavior on a per-bridge basis, to
accommodate for different capabilities of the platforms where this
code is used. In preparation for this, create a per-bridge copy of the
register behavior arrays, so that they can later be tweaked on a
per-bridge basis.
Fixes: 1f08673eef123 ("PCI: mvebu: Convert to PCI emulated bridge config space")
Reported-by: Luís Mendes <luis.p.mendes@gmail.com>
Reported-by: Leigh Brown <leigh@solinno.co.uk>
Tested-by: Leigh Brown <leigh@solinno.co.uk>
Tested-by: Luis Mendes <luis.p.mendes@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Cc: Luís Mendes <luis.p.mendes@gmail.com>
Cc: Leigh Brown <leigh@solinno.co.uk>
Diffstat (limited to 'drivers/pci/pci-bridge-emul.h')
| -rw-r--r-- | drivers/pci/pci-bridge-emul.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/pci/pci-bridge-emul.h b/drivers/pci/pci-bridge-emul.h index 9d510ccf738b..f04637bb3222 100644 --- a/drivers/pci/pci-bridge-emul.h +++ b/drivers/pci/pci-bridge-emul.h @@ -107,15 +107,21 @@ struct pci_bridge_emul_ops { u32 old, u32 new, u32 mask); }; +struct pci_bridge_reg_behavior; + struct pci_bridge_emul { struct pci_bridge_emul_conf conf; struct pci_bridge_emul_pcie_conf pcie_conf; struct pci_bridge_emul_ops *ops; + struct pci_bridge_reg_behavior *pci_regs_behavior; + struct pci_bridge_reg_behavior *pcie_cap_regs_behavior; void *data; bool has_pcie; }; -void pci_bridge_emul_init(struct pci_bridge_emul *bridge); +int pci_bridge_emul_init(struct pci_bridge_emul *bridge); +void pci_bridge_emul_cleanup(struct pci_bridge_emul *bridge); + int pci_bridge_emul_conf_read(struct pci_bridge_emul *bridge, int where, int size, u32 *value); int pci_bridge_emul_conf_write(struct pci_bridge_emul *bridge, int where, |