powerpc/powernv: Specialise pci_controller_ops for each controller type

Remove powernv generic PCI controller operations. Replace it with
controller ops for each of the two supported PHBs.

As an added bonus, make the two new structs const, which will help
guard against bugs such as the one introduced in 65ebf4b63
("powerpc/powernv: Move controller ops from ppc_md to controller_ops")

Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index f8bc950efcae39a63f213290b65d36fec1667b60..23125f46f86547551c6d8eff2ec8422a82f7e6b5 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -2648,6 +2648,17 @@ static void pnv_pci_ioda_shutdown(struct pnv_phb *phb)
                       OPAL_ASSERT_RESET);
 }
 
+static const struct pci_controller_ops pnv_pci_ioda_controller_ops = {
+       .dma_dev_setup = pnv_pci_dma_dev_setup,
+#ifdef CONFIG_PCI_MSI
+       .setup_msi_irqs = pnv_setup_msi_irqs,
+       .teardown_msi_irqs = pnv_teardown_msi_irqs,
+#endif
+       .enable_device_hook = pnv_pci_enable_device_hook,
+       .window_alignment = pnv_pci_window_alignment,
+       .reset_secondary_bus = pnv_pci_reset_secondary_bus,
+};
+
 static void __init pnv_pci_init_ioda_phb(struct device_node *np,
                                         u64 hub_id, int ioda_type)
 {
@@ -2808,10 +2819,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
         * the child P2P bridges) can form individual PE.
         */
        ppc_md.pcibios_fixup = pnv_pci_ioda_fixup;
-       pnv_pci_controller_ops.enable_device_hook = pnv_pci_enable_device_hook;
-       pnv_pci_controller_ops.window_alignment = pnv_pci_window_alignment;
-       pnv_pci_controller_ops.reset_secondary_bus = pnv_pci_reset_secondary_bus;
-       hose->controller_ops = pnv_pci_controller_ops;
+       hose->controller_ops = pnv_pci_ioda_controller_ops;
 
 #ifdef CONFIG_PCI_IOV
        ppc_md.pcibios_fixup_sriov = pnv_pci_ioda_fixup_iov_resources;

diff --git a/arch/powerpc/platforms/powernv/pci-p5ioc2.c b/arch/powerpc/platforms/powernv/pci-p5ioc2.c
index 4729ca793813cfe908e0d5818766ac130cfdafd6..7f826e8cc1d4fb16584eb195739022cb616bd49a 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci-p5ioc2.c
+++ b/arch/powerpc/platforms/powernv/pci-p5ioc2.c
@@ -95,6 +95,14 @@ static void pnv_pci_p5ioc2_dma_dev_setup(struct pnv_phb *phb,
        set_iommu_table_base_and_group(&pdev->dev, &phb->p5ioc2.iommu_table);
 }
 
+static const struct pci_controller_ops pnv_pci_p5ioc2_controller_ops = {
+       .dma_dev_setup = pnv_pci_dma_dev_setup,
+#ifdef CONFIG_PCI_MSI
+       .setup_msi_irqs = pnv_setup_msi_irqs,
+       .teardown_msi_irqs = pnv_teardown_msi_irqs,
+#endif
+};
+
 static void __init pnv_pci_init_p5ioc2_phb(struct device_node *np, u64 hub_id,
                                           void *tce_mem, u64 tce_size)
 {
@@ -133,7 +141,7 @@ static void __init pnv_pci_init_p5ioc2_phb(struct device_node *np, u64 hub_id,
        phb->hose->first_busno = 0;
        phb->hose->last_busno = 0xff;
        phb->hose->private_data = phb;
-       phb->hose->controller_ops = pnv_pci_controller_ops;
+       phb->hose->controller_ops = pnv_pci_p5ioc2_controller_ops;
        phb->hub_id = hub_id;
        phb->opal_id = phb_id;
        phb->type = PNV_PHB_P5IOC2;

diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 0f04940b7fb029e1c21ac326da605c0a7575238f..dfad2ba13bdf076b5b8a2ae34e462662a25e048e 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -45,7 +45,7 @@
 //#define cfg_dbg(fmt...)      printk(fmt)
 
 #ifdef CONFIG_PCI_MSI
-static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
+int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 {
        struct pci_controller *hose = pci_bus_to_host(pdev->bus);
        struct pnv_phb *phb = hose->private_data;
@@ -94,7 +94,7 @@ static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
        return 0;
 }
 
-static void pnv_teardown_msi_irqs(struct pci_dev *pdev)
+void pnv_teardown_msi_irqs(struct pci_dev *pdev)
 {
        struct pci_controller *hose = pci_bus_to_host(pdev->bus);
        struct pnv_phb *phb = hose->private_data;
@@ -662,7 +662,7 @@ void pnv_pci_setup_iommu_table(struct iommu_table *tbl,
        tbl->it_type = TCE_PCI;
 }
 
-static void pnv_pci_dma_dev_setup(struct pci_dev *pdev)
+void pnv_pci_dma_dev_setup(struct pci_dev *pdev)
 {
        struct pci_controller *hose = pci_bus_to_host(pdev->bus);
        struct pnv_phb *phb = hose->private_data;
@@ -771,11 +771,3 @@ void __init pnv_pci_init(void)
 }
 
 machine_subsys_initcall_sync(powernv, tce_iommu_bus_notifier_init);
-
-struct pci_controller_ops pnv_pci_controller_ops = {
-       .dma_dev_setup = pnv_pci_dma_dev_setup,
-#ifdef CONFIG_PCI_MSI
-       .setup_msi_irqs = pnv_setup_msi_irqs,
-       .teardown_msi_irqs = pnv_teardown_msi_irqs,
-#endif
-};

diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index 070ee888fc95cef223337e3bd945726ffc7ac7cc..15fde52cb5cd68e6345f3dc828254b000f17a8b0 100644 (file)
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -218,4 +218,8 @@ extern void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl,
 extern void pnv_pci_reset_secondary_bus(struct pci_dev *dev);
 extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option);
 
+extern void pnv_pci_dma_dev_setup(struct pci_dev *pdev);
+extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
+extern void pnv_teardown_msi_irqs(struct pci_dev *pdev);
+
 #endif /* __POWERNV_PCI_H */

diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h
index f907f0a494dae0a106792354235521d01252c267..addd15cdbabc2606ed9110990670d680ab759fa9 100644 (file)
--- a/arch/powerpc/platforms/powernv/powernv.h
+++ b/arch/powerpc/platforms/powernv/powernv.h
@@ -29,8 +29,6 @@ static inline u64 pnv_pci_dma_get_required_mask(struct pci_dev *pdev)
 }
 #endif
 
-extern struct pci_controller_ops pnv_pci_controller_ops;
-
 extern u32 pnv_get_supported_cpuidle_states(void);
 
 extern void pnv_lpc_init(void);