diff options
Diffstat (limited to 'usr/src')
| -rw-r--r-- | usr/src/uts/common/io/pci_cap.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/usr/src/uts/common/io/pci_cap.c b/usr/src/uts/common/io/pci_cap.c index 538d362f64..2fc8a3bf2d 100644 --- a/usr/src/uts/common/io/pci_cap.c +++ b/usr/src/uts/common/io/pci_cap.c @@ -33,6 +33,7 @@ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. + * Copyright 2022 Oxide Computer Company */ /* @@ -51,8 +52,8 @@ uint_t pci_cap_debug = 0; * pci_cap_probe: returns the capid and base based upon a given index */ int -pci_cap_probe(ddi_acc_handle_t h, uint16_t index, - uint32_t *id_p, uint16_t *base_p) +pci_cap_probe(ddi_acc_handle_t h, uint16_t index, uint32_t *id_p, + uint16_t *base_p) { int i, search_ext = 0; uint16_t base, pcix_cmd, status; @@ -125,7 +126,7 @@ int pci_lcap_locate(ddi_acc_handle_t h, uint8_t id, uint16_t *base_p) { uint8_t header; - uint16_t status, base; + uint16_t status, base, ncaps; status = pci_config_get16(h, PCI_CONF_STAT); @@ -149,12 +150,17 @@ pci_lcap_locate(ddi_acc_handle_t h, uint8_t id, uint16_t *base_p) return (DDI_FAILURE); } + ncaps = 0; for (base = pci_config_get8(h, base); base; base = pci_config_get8(h, base + PCI_CAP_NEXT_PTR)) { if (pci_config_get8(h, base) == id) { *base_p = base; return (DDI_SUCCESS); } + + ncaps++; + if (ncaps >= PCI_CAP_MAX_PTR) + break; } *base_p = PCI_CAP_NEXT_PTR_NULL; @@ -168,13 +174,14 @@ int pci_xcap_locate(ddi_acc_handle_t h, uint16_t id, uint16_t *base_p) { uint16_t status, base; - uint32_t xcaps_hdr; + uint32_t xcaps_hdr, ncaps; status = pci_config_get16(h, PCI_CONF_STAT); if (status == PCI_CAP_EINVAL16 || !(status & PCI_STAT_CAP)) return (DDI_FAILURE); + ncaps = 0; for (base = PCIE_EXT_CAP; base; base = (xcaps_hdr >> PCIE_EXT_CAP_NEXT_PTR_SHIFT) & PCIE_EXT_CAP_NEXT_PTR_MASK) { @@ -186,6 +193,10 @@ pci_xcap_locate(ddi_acc_handle_t h, uint16_t id, uint16_t *base_p) *base_p = base; return (DDI_SUCCESS); } + + ncaps++; + if (ncaps >= PCIE_EXT_CAP_MAX_PTR) + break; } *base_p = PCI_CAP_NEXT_PTR_NULL; @@ -249,8 +260,8 @@ pci_htcap_locate(ddi_acc_handle_t h, uint16_t reg_mask, uint16_t reg_val, * because no cap list traversal is required. */ uint32_t -pci_cap_get(ddi_acc_handle_t h, pci_cap_config_size_t size, - uint32_t id, uint16_t base, uint16_t offset) +pci_cap_get(ddi_acc_handle_t h, pci_cap_config_size_t size, uint32_t id, + uint16_t base, uint16_t offset) { uint32_t data; @@ -291,8 +302,7 @@ pci_cap_get(ddi_acc_handle_t h, pci_cap_config_size_t size, */ int pci_cap_put(ddi_acc_handle_t h, pci_cap_config_size_t size, - uint32_t id, uint16_t base, uint16_t offset, - uint32_t data) + uint32_t id, uint16_t base, uint16_t offset, uint32_t data) { /* @@ -327,7 +337,7 @@ pci_cap_put(ddi_acc_handle_t h, pci_cap_config_size_t size, */ int pci_cap_read(ddi_acc_handle_t h, uint32_t id, uint16_t base, - uint32_t *buf_p, uint32_t nwords) + uint32_t *buf_p, uint32_t nwords) { int i; |