diff options
author | Surabhi Vishnoi <svishnoi@codeaurora.org> | 2017-08-31 17:54:50 +0530 |
---|---|---|
committer | snandini <snandini@codeaurora.org> | 2017-11-05 20:37:06 -0800 |
commit | 6f752b487b336ddb12610dea95cb122fc26589b1 (patch) | |
tree | 5b145afb50c0062e6917e0544e8f38d5267bbf9d /hif | |
parent | 5b55c8e85787b7706c24ceb53923ada9a48a6a11 (diff) | |
download | qca-wfi-host-cmn-6f752b487b336ddb12610dea95cb122fc26589b1.tar.gz |
qcacmn: Check target address boundary before access
Athdiag procfs entry does not have address sanity check, this is
resulting in invalid ioread32/iowrite32 if out of PCIE BAR address
is used.
Fix this by allowing address with in PCIE BAR range.
Change-Id: I8365eacca7ccc4f489b7d0bda6c998384d0fec7b
CRs-Fixed: 2112270
Diffstat (limited to 'hif')
-rw-r--r-- | hif/src/ath_procfs.c | 16 | ||||
-rw-r--r-- | hif/src/dispatcher/dummy.c | 5 | ||||
-rw-r--r-- | hif/src/dispatcher/dummy.h | 2 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus.h | 1 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus_ahb.c | 1 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus_pci.c | 1 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus_sdio.c | 1 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus_snoc.c | 1 | ||||
-rw-r--r-- | hif/src/dispatcher/multibus_usb.c | 1 | ||||
-rw-r--r-- | hif/src/pcie/if_pci.c | 16 | ||||
-rw-r--r-- | hif/src/pcie/if_pci.h | 6 |
11 files changed, 44 insertions, 7 deletions
diff --git a/hif/src/ath_procfs.c b/hif/src/ath_procfs.c index 6a9ae11dd..d18b82a3f 100644 --- a/hif/src/ath_procfs.c +++ b/hif/src/ath_procfs.c @@ -73,17 +73,21 @@ static ssize_t ath_procfs_diag_read(struct file *file, char __user *buf, uint32_t offset = 0, memtype = 0; struct hif_target_info *tgt_info; + hif_hdl = get_hif_hdl_from_file(file); + scn = HIF_GET_SOFTC(hif_hdl); + + if (scn->bus_ops.hif_addr_in_boundary(hif_hdl, (uint32_t)(*pos))) + return -EINVAL; + read_buffer = qdf_mem_malloc(count); if (NULL == read_buffer) { HIF_ERROR("%s: cdf_mem_alloc failed", __func__); return -ENOMEM; } - hif_hdl = get_hif_hdl_from_file(file); HIF_DBG("rd buff 0x%pK cnt %zu offset 0x%x buf 0x%pK", read_buffer, count, (int)*pos, buf); - scn = HIF_GET_SOFTC(hif_hdl); tgt_info = hif_get_target_info_handle(GET_HIF_OPAQUE_HDL(hif_hdl)); if (scn->bus_type == QDF_BUS_TYPE_SNOC || (scn->bus_type == QDF_BUS_TYPE_PCI && @@ -133,6 +137,12 @@ static ssize_t ath_procfs_diag_write(struct file *file, uint32_t offset = 0, memtype = 0; struct hif_target_info *tgt_info; + hif_hdl = get_hif_hdl_from_file(file); + scn = HIF_GET_SOFTC(hif_hdl); + + if (scn->bus_ops.hif_addr_in_boundary(hif_hdl, (uint32_t)(*pos))) + return -EINVAL; + write_buffer = qdf_mem_malloc(count); if (NULL == write_buffer) { HIF_ERROR("%s: cdf_mem_alloc failed", __func__); @@ -145,12 +155,10 @@ static ssize_t ath_procfs_diag_write(struct file *file, return -EFAULT; } - hif_hdl = get_hif_hdl_from_file(file); HIF_DBG("wr buff 0x%pK buf 0x%pK cnt %zu offset 0x%x value 0x%x", write_buffer, buf, count, (int)*pos, *((uint32_t *) write_buffer)); - scn = HIF_GET_SOFTC(hif_hdl); tgt_info = hif_get_target_info_handle(GET_HIF_OPAQUE_HDL(hif_hdl)); if (scn->bus_type == QDF_BUS_TYPE_SNOC || (scn->bus_type == QDF_BUS_TYPE_PCI && diff --git a/hif/src/dispatcher/dummy.c b/hif/src/dispatcher/dummy.c index 88dc45c7b..b88293a3b 100644 --- a/hif/src/dispatcher/dummy.c +++ b/hif/src/dispatcher/dummy.c @@ -372,3 +372,8 @@ int hif_dummy_map_ce_to_irq(struct hif_softc *scn, int ce_id) return -(1); } +int hif_dummy_addr_in_boundary(struct hif_softc *scn, uint32_t offset) +{ + return 0; +} + diff --git a/hif/src/dispatcher/dummy.h b/hif/src/dispatcher/dummy.h index b32df0974..b02183234 100644 --- a/hif/src/dispatcher/dummy.h +++ b/hif/src/dispatcher/dummy.h @@ -66,4 +66,4 @@ void hif_dummy_set_bundle_mode(struct hif_softc *hif_ctx, bool enabled, int rx_bundle_cnt); int hif_dummy_bus_reset_resume(struct hif_softc *hif_ctx); int hif_dummy_map_ce_to_irq(struct hif_softc *scn, int ce_id); - +int hif_dummy_addr_in_boundary(struct hif_softc *scn, uint32_t offset); diff --git a/hif/src/dispatcher/multibus.h b/hif/src/dispatcher/multibus.h index 8acab762a..2bbb586d2 100644 --- a/hif/src/dispatcher/multibus.h +++ b/hif/src/dispatcher/multibus.h @@ -87,6 +87,7 @@ struct hif_bus_ops { int rx_bundle_cnt); int (*hif_bus_reset_resume)(struct hif_softc *hif_ctx); int (*hif_map_ce_to_irq)(struct hif_softc *hif_sc, int ce_id); + int (*hif_addr_in_boundary)(struct hif_softc *scn, uint32_t offset); }; #ifdef HIF_SNOC diff --git a/hif/src/dispatcher/multibus_ahb.c b/hif/src/dispatcher/multibus_ahb.c index 0b6e40750..960f8cea6 100644 --- a/hif/src/dispatcher/multibus_ahb.c +++ b/hif/src/dispatcher/multibus_ahb.c @@ -67,6 +67,7 @@ QDF_STATUS hif_initialize_ahb_ops(struct hif_bus_ops *bus_ops) bus_ops->hif_disable_power_management = &hif_dummy_disable_power_management; bus_ops->hif_grp_irq_configure = &hif_ahb_configure_grp_irq; + bus_ops->hif_addr_in_boundary = &hif_dummy_addr_in_boundary; return QDF_STATUS_SUCCESS; } diff --git a/hif/src/dispatcher/multibus_pci.c b/hif/src/dispatcher/multibus_pci.c index 4c93600d1..332e3b047 100644 --- a/hif/src/dispatcher/multibus_pci.c +++ b/hif/src/dispatcher/multibus_pci.c @@ -88,6 +88,7 @@ QDF_STATUS hif_initialize_pci_ops(struct hif_softc *hif_sc) &hif_pci_display_stats; bus_ops->hif_clear_stats = &hif_pci_clear_stats; + bus_ops->hif_addr_in_boundary = &hif_pci_addr_in_boundary; /* default to legacy mapping handler; override as needed */ bus_ops->hif_map_ce_to_irq = &hif_pci_legacy_map_ce_to_irq; diff --git a/hif/src/dispatcher/multibus_sdio.c b/hif/src/dispatcher/multibus_sdio.c index 4b5163fed..ab1641cd4 100644 --- a/hif/src/dispatcher/multibus_sdio.c +++ b/hif/src/dispatcher/multibus_sdio.c @@ -64,6 +64,7 @@ QDF_STATUS hif_initialize_sdio_ops(struct hif_softc *hif_sc) &hif_dummy_enable_power_management; bus_ops->hif_disable_power_management = &hif_dummy_disable_power_management; + bus_ops->hif_addr_in_boundary = &hif_dummy_addr_in_boundary; return QDF_STATUS_SUCCESS; } diff --git a/hif/src/dispatcher/multibus_snoc.c b/hif/src/dispatcher/multibus_snoc.c index 5edb37124..9c2193b9d 100644 --- a/hif/src/dispatcher/multibus_snoc.c +++ b/hif/src/dispatcher/multibus_snoc.c @@ -82,6 +82,7 @@ QDF_STATUS hif_initialize_snoc_ops(struct hif_bus_ops *bus_ops) bus_ops->hif_clear_stats = &hif_snoc_clear_stats; bus_ops->hif_map_ce_to_irq = &hif_snoc_map_ce_to_irq; + bus_ops->hif_addr_in_boundary = &hif_dummy_addr_in_boundary; return QDF_STATUS_SUCCESS; } diff --git a/hif/src/dispatcher/multibus_usb.c b/hif/src/dispatcher/multibus_usb.c index bbe5d9b34..68f73bc7c 100644 --- a/hif/src/dispatcher/multibus_usb.c +++ b/hif/src/dispatcher/multibus_usb.c @@ -64,6 +64,7 @@ QDF_STATUS hif_initialize_usb_ops(struct hif_bus_ops *bus_ops) &hif_dummy_disable_power_management; bus_ops->hif_set_bundle_mode = hif_usb_set_bundle_mode; bus_ops->hif_bus_reset_resume = hif_usb_bus_reset_resume; + bus_ops->hif_addr_in_boundary = &hif_dummy_addr_in_boundary; return QDF_STATUS_SUCCESS; } diff --git a/hif/src/pcie/if_pci.c b/hif/src/pcie/if_pci.c index e4392142b..ddd147746 100644 --- a/hif/src/pcie/if_pci.c +++ b/hif/src/pcie/if_pci.c @@ -2208,6 +2208,7 @@ static int hif_enable_pci(struct hif_pci_softc *sc, __func__, sc->mem); } + sc->mem_len = pci_resource_len(pdev, BAR_NUM); ol_sc->mem = mem; ol_sc->mem_pa = pci_resource_start(pdev, BAR_NUM); sc->pci_enabled = true; @@ -4464,3 +4465,18 @@ int hif_pci_legacy_map_ce_to_irq(struct hif_softc *scn, int ce_id) /* legacy case only has one irq */ return pci_scn->irq; } + +int hif_pci_addr_in_boundary(struct hif_softc *scn, uint32_t offset) +{ + struct hif_pci_softc *sc = HIF_GET_PCI_SOFTC(scn); + + if ((offset >= DRAM_BASE_ADDRESS && offset <= DRAM_BASE_ADDRESS + DRAM_SIZE) + || (offset + sizeof(unsigned int) <= sc->mem_len)) { + return 0; + } + + HIF_TRACE("Refusing to read memory at 0x%x - 0x%lx (max 0x%zx)\n", + offset, offset + sizeof(unsigned int), sc->mem_len); + + return -EINVAL; +} diff --git a/hif/src/pcie/if_pci.h b/hif/src/pcie/if_pci.h index 98bfbd726..991be8379 100644 --- a/hif/src/pcie/if_pci.h +++ b/hif/src/pcie/if_pci.h @@ -33,6 +33,7 @@ #include <linux/interrupt.h> #define ATH_DBG_DEFAULT 0 +#define DRAM_SIZE 0x000a8000 #include "hif.h" #include "cepci.h" #include "ce_main.h" @@ -109,9 +110,9 @@ struct hif_msi_info { struct hif_pci_softc { struct HIF_CE_state ce_sc; void __iomem *mem; /* PCI address. */ - /* For efficiency, should be first in struct */ + size_t mem_len; - struct device *dev; + struct device *dev; /* For efficiency, should be first in struct */ struct pci_dev *pdev; int num_msi_intrs; /* number of MSI interrupts granted */ /* 0 --> using legacy PCI line interrupts */ @@ -148,6 +149,7 @@ int hif_configure_irq(struct hif_softc *sc); void hif_pci_cancel_deferred_target_sleep(struct hif_softc *scn); void wlan_tasklet(unsigned long data); irqreturn_t hif_pci_interrupt_handler(int irq, void *arg); +int hif_pci_addr_in_boundary(struct hif_softc *scn, uint32_t offset); /* * A firmware interrupt to the Host is indicated by the |