| Message ID | 1414669490-1217-2-git-send-email-lorenzo.pieralisi@arm.com |
|---|---|
| State | Superseded |
| Headers | show |
2014-10-30 12:44 GMT+01:00 Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>: [...] > @@ -323,6 +308,14 @@ static int cns3xxx_pcie_abort_handler(unsigned long addr, unsigned int fsr, > void __init cns3xxx_pcie_init_late(void) > { > int i; > + void *private_data; > + struct hw_pci hw_pci = { > + .nr_controllers = 1, > + .ops = &cns3xxx_pcie_ops, > + .setup = cns3xxx_pci_setup, > + .map_irq = cns3xxx_pcie_map_irq, > + .private_data = &private_data, > + }; > > pcibios_min_io = 0; > pcibios_min_mem = 0; > @@ -335,7 +328,8 @@ void __init cns3xxx_pcie_init_late(void) > cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i)); > cns3xxx_pcie_check_link(&cns3xxx_pcie[i]); > cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]); > - pci_common_init(&cns3xxx_pcie[i].hw_pci); > + private_data = &cns3xxx_pcie[i]; > + pci_common_init(&hw_pci); > } This looks weird. hw_pci.private_data is a pointer to a (temporary) pointer to private data? Best Regards, Michał Mirosław -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Saturday 01 November 2014 13:32:08 Michał Mirosław wrote: > > @@ -335,7 +328,8 @@ void __init cns3xxx_pcie_init_late(void) > > cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i)); > > cns3xxx_pcie_check_link(&cns3xxx_pcie[i]); > > cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]); > > - pci_common_init(&cns3xxx_pcie[i].hw_pci); > > + private_data = &cns3xxx_pcie[i]; > > + pci_common_init(&hw_pci); > > } > > This looks weird. hw_pci.private_data is a pointer to a (temporary) > pointer to private data? > hw_pci is a local data structure that is only used to pass arguments to pci_common_init. hw_pci->private_data is a pointer to an array of pointers to the private data in each host bridge that is created in the new domain during the call to pci_common_init. Like most other callers, cns3xxx creates only one host bridge per domain, so it's an array that contains only one entry. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c index 45d6bd0..f6bf9f6 100644 --- a/arch/arm/mach-cns3xxx/pcie.c +++ b/arch/arm/mach-cns3xxx/pcie.c @@ -30,18 +30,15 @@ struct cns3xxx_pcie { unsigned int irqs[2]; struct resource res_io; struct resource res_mem; - struct hw_pci hw_pci; - + int port; bool linked; }; -static struct cns3xxx_pcie cns3xxx_pcie[]; /* forward decl. */ - static struct cns3xxx_pcie *sysdata_to_cnspci(void *sysdata) { struct pci_sys_data *root = sysdata; - return &cns3xxx_pcie[root->domain]; + return root->private_data; } static struct cns3xxx_pcie *pdev_to_cnspci(const struct pci_dev *dev) @@ -192,13 +189,7 @@ static struct cns3xxx_pcie cns3xxx_pcie[] = { .flags = IORESOURCE_MEM, }, .irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, }, - .hw_pci = { - .domain = 0, - .nr_controllers = 1, - .ops = &cns3xxx_pcie_ops, - .setup = cns3xxx_pci_setup, - .map_irq = cns3xxx_pcie_map_irq, - }, + .port = 0, }, [1] = { .host_regs = (void __iomem *)CNS3XXX_PCIE1_HOST_BASE_VIRT, @@ -217,19 +208,13 @@ static struct cns3xxx_pcie cns3xxx_pcie[] = { .flags = IORESOURCE_MEM, }, .irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, }, - .hw_pci = { - .domain = 1, - .nr_controllers = 1, - .ops = &cns3xxx_pcie_ops, - .setup = cns3xxx_pci_setup, - .map_irq = cns3xxx_pcie_map_irq, - }, + .port = 1, }, }; static void __init cns3xxx_pcie_check_link(struct cns3xxx_pcie *cnspci) { - int port = cnspci->hw_pci.domain; + int port = cnspci->port; u32 reg; unsigned long time; @@ -260,9 +245,9 @@ static void __init cns3xxx_pcie_check_link(struct cns3xxx_pcie *cnspci) static void __init cns3xxx_pcie_hw_init(struct cns3xxx_pcie *cnspci) { - int port = cnspci->hw_pci.domain; + int port = cnspci->port; struct pci_sys_data sd = { - .domain = port, + .private_data = cnspci, }; struct pci_bus bus = { .number = 0, @@ -323,6 +308,14 @@ static int cns3xxx_pcie_abort_handler(unsigned long addr, unsigned int fsr, void __init cns3xxx_pcie_init_late(void) { int i; + void *private_data; + struct hw_pci hw_pci = { + .nr_controllers = 1, + .ops = &cns3xxx_pcie_ops, + .setup = cns3xxx_pci_setup, + .map_irq = cns3xxx_pcie_map_irq, + .private_data = &private_data, + }; pcibios_min_io = 0; pcibios_min_mem = 0; @@ -335,7 +328,8 @@ void __init cns3xxx_pcie_init_late(void) cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i)); cns3xxx_pcie_check_link(&cns3xxx_pcie[i]); cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]); - pci_common_init(&cns3xxx_pcie[i].hw_pci); + private_data = &cns3xxx_pcie[i]; + pci_common_init(&hw_pci); } pci_assign_unassigned_resources();