diff options
Diffstat (limited to 'drivers/pci')
-rw-r--r-- | drivers/pci/dwc/pci-keystone-dw.c | 2 | ||||
-rw-r--r-- | drivers/pci/dwc/pci-keystone.h | 3 | ||||
-rw-r--r-- | drivers/pci/dwc/pci-layerscape.c | 3 | ||||
-rw-r--r-- | drivers/pci/dwc/pcie-designware-host.c | 190 | ||||
-rw-r--r-- | drivers/pci/dwc/pcie-designware.h | 2 |
5 files changed, 5 insertions, 195 deletions
diff --git a/drivers/pci/dwc/pci-keystone-dw.c b/drivers/pci/dwc/pci-keystone-dw.c index 86e613afb019..0682213328e9 100644 --- a/drivers/pci/dwc/pci-keystone-dw.c +++ b/drivers/pci/dwc/pci-keystone-dw.c @@ -157,7 +157,7 @@ void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq) BIT(bit_pos)); } -int ks_dw_pcie_msi_host_init(struct pcie_port *pp, struct msi_controller *chip) +int ks_dw_pcie_msi_host_init(struct pcie_port *pp) { return dw_pcie_allocate_domains(pp); } diff --git a/drivers/pci/dwc/pci-keystone.h b/drivers/pci/dwc/pci-keystone.h index aa504483e83a..8a13da391543 100644 --- a/drivers/pci/dwc/pci-keystone.h +++ b/drivers/pci/dwc/pci-keystone.h @@ -53,6 +53,5 @@ void ks_dw_pcie_msi_irq_ack(int i, struct pcie_port *pp); void ks_dw_pcie_msi_set_irq(struct pcie_port *pp, int irq); void ks_dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq); void ks_dw_pcie_v3_65_scan_bus(struct pcie_port *pp); -int ks_dw_pcie_msi_host_init(struct pcie_port *pp, - struct msi_controller *chip); +int ks_dw_pcie_msi_host_init(struct pcie_port *pp); int ks_dw_pcie_link_up(struct dw_pcie *pci); diff --git a/drivers/pci/dwc/pci-layerscape.c b/drivers/pci/dwc/pci-layerscape.c index a7b4159631ae..3724d3ef7008 100644 --- a/drivers/pci/dwc/pci-layerscape.c +++ b/drivers/pci/dwc/pci-layerscape.c @@ -182,8 +182,7 @@ static int ls1021_pcie_host_init(struct pcie_port *pp) return ls_pcie_host_init(pp); } -static int ls_pcie_msi_host_init(struct pcie_port *pp, - struct msi_controller *chip) +static int ls_pcie_msi_host_init(struct pcie_port *pp) { struct dw_pcie *pci = to_dw_pcie_from_pp(pp); struct device *dev = pci->dev; diff --git a/drivers/pci/dwc/pcie-designware-host.c b/drivers/pci/dwc/pcie-designware-host.c index a28c496f58ac..193a0fa7b709 100644 --- a/drivers/pci/dwc/pcie-designware-host.c +++ b/drivers/pci/dwc/pcie-designware-host.c @@ -43,14 +43,6 @@ static int dw_pcie_wr_own_conf(struct pcie_port *pp, int where, int size, return dw_pcie_write(pci->dbi_base + where, size, val); } -static struct irq_chip dw_msi_irq_chip = { - .name = "PCI-MSI", - .irq_enable = pci_msi_unmask_irq, - .irq_disable = pci_msi_mask_irq, - .irq_mask = pci_msi_mask_irq, - .irq_unmask = pci_msi_unmask_irq, -}; - static void dw_msi_ack_irq(struct irq_data *d) { irq_chip_ack_parent(d); @@ -320,186 +312,6 @@ void dw_pcie_msi_init(struct pcie_port *pp) upper_32_bits(msi_target)); } -static void dw_pcie_msi_clear_irq(struct pcie_port *pp, int irq) -{ - unsigned int res, bit, ctrl; - - ctrl = irq / 32; - res = ctrl * 12; - bit = irq % 32; - pp->irq_status[ctrl] &= ~(1 << bit); - dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, - pp->irq_status[ctrl]); -} - -static void clear_irq_range(struct pcie_port *pp, unsigned int irq_base, - unsigned int nvec, unsigned int pos) -{ - unsigned int i; - - for (i = 0; i < nvec; i++) { - irq_set_msi_desc_off(irq_base, i, NULL); - /* Disable corresponding interrupt on MSI controller */ - if (pp->ops->msi_clear_irq) - pp->ops->msi_clear_irq(pp, pos + i); - else - dw_pcie_msi_clear_irq(pp, pos + i); - } - - bitmap_release_region(pp->msi_irq_in_use, pos, order_base_2(nvec)); -} - -static void dw_pcie_msi_set_irq(struct pcie_port *pp, int irq) -{ - unsigned int res, bit, ctrl; - - ctrl = irq / 32; - res = ctrl * 12; - bit = irq % 32; - pp->irq_status[ctrl] |= 1 << bit; - dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_ENABLE + res, 4, - pp->irq_status[ctrl]); -} - -static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos) -{ - int irq, pos0, i; - struct pcie_port *pp; - - pp = (struct pcie_port *)msi_desc_to_pci_sysdata(desc); - pos0 = bitmap_find_free_region(pp->msi_irq_in_use, MAX_MSI_IRQS, - order_base_2(no_irqs)); - if (pos0 < 0) - goto no_valid_irq; - - irq = irq_find_mapping(pp->irq_domain, pos0); - if (!irq) - goto no_valid_irq; - - /* - * irq_create_mapping (called from dw_pcie_host_init) pre-allocates - * descs so there is no need to allocate descs here. We can therefore - * assume that if irq_find_mapping above returns non-zero, then the - * descs are also successfully allocated. - */ - - for (i = 0; i < no_irqs; i++) { - if (irq_set_msi_desc_off(irq, i, desc) != 0) { - clear_irq_range(pp, irq, i, pos0); - goto no_valid_irq; - } - /*Enable corresponding interrupt in MSI interrupt controller */ - if (pp->ops->msi_set_irq) - pp->ops->msi_set_irq(pp, pos0 + i); - else - dw_pcie_msi_set_irq(pp, pos0 + i); - } - - *pos = pos0; - desc->nvec_used = no_irqs; - desc->msi_attrib.multiple = order_base_2(no_irqs); - - return irq; - -no_valid_irq: - *pos = pos0; - return -ENOSPC; -} - -static void dw_msi_setup_msg(struct pcie_port *pp, unsigned int irq, u32 pos) -{ - struct msi_msg msg; - u64 msi_target; - - if (pp->ops->get_msi_addr) - msi_target = pp->ops->get_msi_addr(pp); - else - msi_target = (u64)pp->msi_data; - - msg.address_lo = (u32)(msi_target & 0xffffffff); - msg.address_hi = (u32)(msi_target >> 32 & 0xffffffff); - - if (pp->ops->get_msi_data) - msg.data = pp->ops->get_msi_data(pp, pos); - else - msg.data = pos; - - pci_write_msi_msg(irq, &msg); -} - -static int dw_msi_setup_irq(struct msi_controller *chip, struct pci_dev *pdev, - struct msi_desc *desc) -{ - int irq, pos; - struct pcie_port *pp = pdev->bus->sysdata; - - if (desc->msi_attrib.is_msix) - return -EINVAL; - - irq = assign_irq(1, desc, &pos); - if (irq < 0) - return irq; - - dw_msi_setup_msg(pp, irq, pos); - - return 0; -} - -static int dw_msi_setup_irqs(struct msi_controller *chip, struct pci_dev *pdev, - int nvec, int type) -{ -#ifdef CONFIG_PCI_MSI - int irq, pos; - struct msi_desc *desc; - struct pcie_port *pp = pdev->bus->sysdata; - - /* MSI-X interrupts are not supported */ - if (type == PCI_CAP_ID_MSIX) - return -EINVAL; - - WARN_ON(!list_is_singular(&pdev->dev.msi_list)); - desc = list_entry(pdev->dev.msi_list.next, struct msi_desc, list); - - irq = assign_irq(nvec, desc, &pos); - if (irq < 0) - return irq; - - dw_msi_setup_msg(pp, irq, pos); - - return 0; -#else - return -EINVAL; -#endif -} - -static void dw_msi_teardown_irq(struct msi_controller *chip, unsigned int irq) -{ - struct irq_data *data = irq_get_irq_data(irq); - struct msi_desc *msi = irq_data_get_msi_desc(data); - struct pcie_port *pp = (struct pcie_port *)msi_desc_to_pci_sysdata(msi); - - clear_irq_range(pp, irq, 1, data->hwirq); -} - -static struct msi_controller dw_pcie_msi_chip = { - .setup_irq = dw_msi_setup_irq, - .setup_irqs = dw_msi_setup_irqs, - .teardown_irq = dw_msi_teardown_irq, -}; - -static int dw_pcie_msi_map(struct irq_domain *domain, unsigned int irq, - irq_hw_number_t hwirq) -{ - irq_set_chip_and_handler(irq, &dw_msi_irq_chip, handle_simple_irq); - irq_set_chip_data(irq, domain->host_data); - - return 0; -} - -static const struct irq_domain_ops msi_domain_ops = { - .map = dw_pcie_msi_map, -}; - int dw_pcie_host_init(struct pcie_port *pp) { struct dw_pcie *pci = to_dw_pcie_from_pp(pp); @@ -639,7 +451,7 @@ int dw_pcie_host_init(struct pcie_port *pp) dw_chained_msi_isr, pp); } else { - ret = pp->ops->msi_host_init(pp, &dw_pcie_msi_chip); + ret = pp->ops->msi_host_init(pp); if (ret < 0) goto error; } diff --git a/drivers/pci/dwc/pcie-designware.h b/drivers/pci/dwc/pcie-designware.h index c80ee868e017..923f9565a385 100644 --- a/drivers/pci/dwc/pcie-designware.h +++ b/drivers/pci/dwc/pcie-designware.h @@ -151,7 +151,7 @@ struct dw_pcie_host_ops { u32 (*get_msi_data)(struct pcie_port *pp, int pos); void (*scan_bus)(struct pcie_port *pp); void (*set_num_vectors)(struct pcie_port *pp); - int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip); + int (*msi_host_init)(struct pcie_port *pp); void (*msi_irq_ack)(int irq, struct pcie_port *pp); }; |