diff options
Diffstat (limited to 'drivers/pci/dwc/pcie-designware-ep.c')
| -rw-r--r-- | drivers/pci/dwc/pcie-designware-ep.c | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/drivers/pci/dwc/pcie-designware-ep.c b/drivers/pci/dwc/pcie-designware-ep.c index 52edcb19da36..d3fc67048e3b 100644 --- a/drivers/pci/dwc/pcie-designware-ep.c +++ b/drivers/pci/dwc/pcie-designware-ep.c @@ -74,8 +74,7 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, u32 free_win; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - free_win = find_first_zero_bit(&ep->ib_window_map, - sizeof(ep->ib_window_map)); + free_win = find_first_zero_bit(ep->ib_window_map, ep->num_ib_windows); if (free_win >= ep->num_ib_windows) { dev_err(pci->dev, "no free inbound window\n"); return -EINVAL; @@ -89,7 +88,7 @@ static int dw_pcie_ep_inbound_atu(struct dw_pcie_ep *ep, enum pci_barno bar, } ep->bar_to_atu[bar] = free_win; - set_bit(free_win, &ep->ib_window_map); + set_bit(free_win, ep->ib_window_map); return 0; } @@ -100,8 +99,7 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, u32 free_win; struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - free_win = find_first_zero_bit(&ep->ob_window_map, - sizeof(ep->ob_window_map)); + free_win = find_first_zero_bit(ep->ob_window_map, ep->num_ob_windows); if (free_win >= ep->num_ob_windows) { dev_err(pci->dev, "no free outbound window\n"); return -EINVAL; @@ -110,7 +108,7 @@ static int dw_pcie_ep_outbound_atu(struct dw_pcie_ep *ep, phys_addr_t phys_addr, dw_pcie_prog_outbound_atu(pci, free_win, PCIE_ATU_TYPE_MEM, phys_addr, pci_addr, size); - set_bit(free_win, &ep->ob_window_map); + set_bit(free_win, ep->ob_window_map); ep->outbound_addr[free_win] = phys_addr; return 0; @@ -126,7 +124,7 @@ static void dw_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, dw_pcie_ep_reset_bar(pci, bar); dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_INBOUND); - clear_bit(atu_index, &ep->ib_window_map); + clear_bit(atu_index, ep->ib_window_map); } static int dw_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no, @@ -184,7 +182,7 @@ static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, return; dw_pcie_disable_atu(pci, atu_index, DW_PCIE_REGION_OUTBOUND); - clear_bit(atu_index, &ep->ob_window_map); + clear_bit(atu_index, ep->ob_window_map); } static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, @@ -207,20 +205,14 @@ static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, static int dw_pcie_ep_get_msi(struct pci_epc *epc, u8 func_no) { int val; - u32 lower_addr; - u32 upper_addr; struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - val = dw_pcie_readb_dbi(pci, MSI_MESSAGE_CONTROL); - val = (val & MSI_CAP_MME_MASK) >> MSI_CAP_MME_SHIFT; - - lower_addr = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_L32); - upper_addr = dw_pcie_readl_dbi(pci, MSI_MESSAGE_ADDR_U32); - - if (!(lower_addr || upper_addr)) + val = dw_pcie_readw_dbi(pci, MSI_MESSAGE_CONTROL); + if (!(val & MSI_CAP_MSI_EN_MASK)) return -EINVAL; + val = (val & MSI_CAP_MME_MASK) >> MSI_CAP_MME_SHIFT; return val; } @@ -350,12 +342,32 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) dev_err(dev, "unable to read *num-ib-windows* property\n"); return ret; } + if (ep->num_ib_windows > MAX_IATU_IN) { + dev_err(dev, "invalid *num-ib-windows*\n"); + return -EINVAL; + } ret = of_property_read_u32(np, "num-ob-windows", &ep->num_ob_windows); if (ret < 0) { dev_err(dev, "unable to read *num-ob-windows* property\n"); return ret; } + if (ep->num_ob_windows > MAX_IATU_OUT) { + dev_err(dev, "invalid *num-ob-windows*\n"); + return -EINVAL; + } + + ep->ib_window_map = devm_kzalloc(dev, sizeof(long) * + BITS_TO_LONGS(ep->num_ib_windows), + GFP_KERNEL); + if (!ep->ib_window_map) + return -ENOMEM; + + ep->ob_window_map = devm_kzalloc(dev, sizeof(long) * + BITS_TO_LONGS(ep->num_ob_windows), + GFP_KERNEL); + if (!ep->ob_window_map) + return -ENOMEM; addr = devm_kzalloc(dev, sizeof(phys_addr_t) * ep->num_ob_windows, GFP_KERNEL); |