diff options
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware-ep.c')
-rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-ep.c | 82 |
1 files changed, 45 insertions, 37 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index 0eda8236c125..cf1627679716 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -154,9 +154,8 @@ static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, u8 vfunc_no, return 0; } -static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, u8 func_no, - enum pci_barno bar, dma_addr_t cpu_addr, - enum dw_pcie_as_type as_type) +static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, u8 func_no, int type, + dma_addr_t cpu_addr, enum pci_barno bar) { int ret; u32 free_win; @@ -168,8 +167,8 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, u8 func_no, return -EINVAL; } - ret = dw_pcie_prog_inbound_atu(pci, func_no, free_win, bar, cpu_addr, - as_type); + ret = dw_pcie_prog_inbound_atu(pci, func_no, free_win, type, + cpu_addr, bar); if (ret < 0) { dev_err(pci->dev, "Failed to program IB window\n"); return ret; @@ -185,8 +184,9 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, u8 func_no, phys_addr_t phys_addr, u64 pci_addr, size_t size) { - u32 free_win; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); + u32 free_win; + int ret; free_win = find_first_zero_bit(ep->ob_window_map, pci->num_ob_windows); if (free_win >= pci->num_ob_windows) { @@ -194,8 +194,10 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, u8 func_no, return -EINVAL; } - dw_pcie_prog_ep_outbound_atu(pci, func_no, free_win, PCIE_ATU_TYPE_MEM, - phys_addr, pci_addr, size); + ret = dw_pcie_prog_ep_outbound_atu(pci, func_no, free_win, PCIE_ATU_TYPE_MEM, + phys_addr, pci_addr, size); + if (ret) + return ret; set_bit(free_win, ep->ob_window_map); ep->outbound_addr[free_win] = phys_addr; @@ -213,7 +215,7 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, u8 vfunc_no, __dw_pcie_ep_reset_bar(pci, func_no, bar, epf_bar->flags); - dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_INBOUND); + dw_pcie_disable_atu(pci, PCIE_ATU_REGION_DIR_IB, atu_index); clear_bit(atu_index, ep->ib_window_map); ep->epf_bar[bar] = NULL; } @@ -221,27 +223,25 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, u8 vfunc_no, static int dw_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no, u8 vfunc_no, struct pci_epf_bar *epf_bar) { - int ret; struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); enum pci_barno bar = epf_bar->barno; size_t size = epf_bar->size; int flags = epf_bar->flags; - enum dw_pcie_as_type as_type; - u32 reg; unsigned int func_offset = 0; + int ret, type; + u32 reg; func_offset = dw_pcie_ep_func_select(ep, func_no); reg = PCI_BASE_ADDRESS_0 + (4 * bar) + func_offset; if (!(flags & PCI_BASE_ADDRESS_SPACE)) - as_type = DW_PCIE_AS_MEM; + type = PCIE_ATU_TYPE_MEM; else - as_type = DW_PCIE_AS_IO; + type = PCIE_ATU_TYPE_IO; - ret = dw_pcie_ep_inbound_atu(ep, func_no, bar, - epf_bar->phys_addr, as_type); + ret = dw_pcie_ep_inbound_atu(ep, func_no, type, epf_bar->phys_addr, bar); if (ret) return ret; @@ -289,7 +289,7 @@ static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, u8 vfunc_no, if (ret < 0) return; - dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_OUTBOUND); + dw_pcie_disable_atu(pci, PCIE_ATU_REGION_DIR_OB, atu_index); clear_bit(atu_index, ep->ob_window_map); } @@ -435,8 +435,7 @@ static void dw_pcie_ep_stop(struct pci_epc *epc) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - if (pci->ops && pci->ops->stop_link) - pci->ops->stop_link(pci); + dw_pcie_stop_link(pci); } static int dw_pcie_ep_start(struct pci_epc *epc) @@ -444,10 +443,7 @@ static int dw_pcie_ep_start(struct pci_epc *epc) struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - if (!pci->ops || !pci->ops->start_link) - return -EINVAL; - - return pci->ops->start_link(pci); + return dw_pcie_start_link(pci); } static const struct pci_epc_features* @@ -699,17 +695,15 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) if (!pci->dbi_base2) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi2"); - if (!res) + if (!res) { pci->dbi_base2 = pci->dbi_base + SZ_4K; - else { + } else { pci->dbi_base2 = devm_pci_remap_cfg_resource(dev, res); if (IS_ERR(pci->dbi_base2)) return PTR_ERR(pci->dbi_base2); } } - dw_pcie_iatu_detect(pci); - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space"); if (!res) return -EINVAL; @@ -717,17 +711,17 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->phys_base = res->start; ep->addr_size = resource_size(res); - ep->ib_window_map = devm_kcalloc(dev, - BITS_TO_LONGS(pci->num_ib_windows), - sizeof(long), - GFP_KERNEL); + dw_pcie_version_detect(pci); + + dw_pcie_iatu_detect(pci); + + ep->ib_window_map = devm_bitmap_zalloc(dev, pci->num_ib_windows, + GFP_KERNEL); if (!ep->ib_window_map) return -ENOMEM; - ep->ob_window_map = devm_kcalloc(dev, - BITS_TO_LONGS(pci->num_ob_windows), - sizeof(long), - GFP_KERNEL); + ep->ob_window_map = devm_bitmap_zalloc(dev, pci->num_ob_windows, + GFP_KERNEL); if (!ep->ob_window_map) return -ENOMEM; @@ -780,8 +774,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->msi_mem = pci_epc_mem_alloc_addr(epc, &ep->msi_mem_phys, epc->mem->window.page_size); if (!ep->msi_mem) { + ret = -ENOMEM; dev_err(dev, "Failed to reserve memory for MSI/MSI-X\n"); - return -ENOMEM; + goto err_exit_epc_mem; } if (ep->ops->get_features) { @@ -790,6 +785,19 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) return 0; } - return dw_pcie_ep_init_complete(ep); + ret = dw_pcie_ep_init_complete(ep); + if (ret) + goto err_free_epc_mem; + + return 0; + +err_free_epc_mem: + pci_epc_mem_free_addr(epc, ep->msi_mem_phys, ep->msi_mem, + epc->mem->window.page_size); + +err_exit_epc_mem: + pci_epc_mem_exit(epc); + + return ret; } EXPORT_SYMBOL_GPL(dw_pcie_ep_init); |