This implements the .coredump() driver callback obtaining binary data from the device and using devcoredump function to expose it in sysfs.
Signed-off-by: Arend van Spriel <[email protected]> --- .../wireless/broadcom/brcm80211/brcmfmac/pcie.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c index 3c87157..55d0d25 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c @@ -22,6 +22,7 @@ #include <linux/interrupt.h> #include <linux/bcma/bcma.h> #include <linux/sched.h> +#include <linux/devcoredump.h> #include <asm/unaligned.h> #include <soc.h> @@ -1744,6 +1745,26 @@ static void brcmf_pcie_setup(struct device *dev, int ret, device_release_driver(dev); } +static int brcmf_pcie_dev_coredump(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pciedev *buspub = bus_if->bus_priv.pcie; + struct brcmf_pciedev_info *devinfo = buspub->devinfo; + size_t len; + void *dump; + + len = devinfo->ci->ramsize - devinfo->ci->srsize; + dump = vzalloc(len); + if (!dump) + return -ENOMEM; + + brcmf_dbg(PCIE, "dump at 0x%08X: len=%zu\n", devinfo->ci->rambase, len); + brcmf_pcie_copy_dev_tomem(devinfo, devinfo->ci->rambase, dump, len); + + dev_coredumpv(dev, dump, len, GFP_KERNEL); + return 0; +} + static int brcmf_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) { @@ -2002,6 +2023,7 @@ static int brcmf_pcie_pm_leave_D3(struct device *dev) .id_table = brcmf_pcie_devid_table, .probe = brcmf_pcie_probe, .remove = brcmf_pcie_remove, + .driver.coredump = brcmf_pcie_dev_coredump, #ifdef CONFIG_PM .driver.pm = &brcmf_pciedrvr_pm, #endif -- 1.9.1
