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authorThomas Petazzoni <thomas.petazzoni@bootlin.com>2019-02-20 12:48:40 +0300
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2019-02-22 13:47:30 +0300
commit59f81c35e0df840f7112cb296dde48df84a67c79 (patch)
tree236d36aa6f21f2908153a0c44cc38fcfddf372bf /drivers/pci/pci-bridge-emul.h
parentbfeffd155283772bbe78c6a05dec7c0128ee500c (diff)
downloadlinux-59f81c35e0df840f7112cb296dde48df84a67c79.tar.xz
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.h8
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,