static int genwqe_sriov_configure(struct pci_dev *dev, int numvfs)
{
struct genwqe_dev *cd = dev_get_drvdata(&dev->dev);
if (numvfs > 0) {
genwqe_setup_vf_jtimer(cd);
pci_enable_sriov(dev, numvfs);
return numvfs;
}
if (numvfs == 0) {
pci_disable_sriov(dev);
return 0;
}
return 0;
}
static int genwqe_start(struct genwqe_dev *cd)
{
int err;
struct pci_dev *pci_dev = cd->pci_dev;
err = genwqe_read_ids(cd);
if (err)
return err;
if (genwqe_is_privileged(cd)) {
/* do this after the tweaks. alloc fail is acceptable */
genwqe_ffdc_buffs_alloc(cd);
genwqe_stop_traps(cd);
/* Collect registers e.g. FIRs, UNITIDs, traces ... */
genwqe_read_ffdc_regs(cd, cd->ffdc[GENWQE_DBG_REGS].regs,
cd->ffdc[GENWQE_DBG_REGS].entries, 0);
genwqe_ffdc_buff_read(cd, GENWQE_DBG_UNIT0,
cd->ffdc[GENWQE_DBG_UNIT0].regs,
cd->ffdc[GENWQE_DBG_UNIT0].entries);
genwqe_ffdc_buff_read(cd, GENWQE_DBG_UNIT1,
cd->ffdc[GENWQE_DBG_UNIT1].regs,
cd->ffdc[GENWQE_DBG_UNIT1].entries);
genwqe_ffdc_buff_read(cd, GENWQE_DBG_UNIT2,
cd->ffdc[GENWQE_DBG_UNIT2].regs,
cd->ffdc[GENWQE_DBG_UNIT2].entries);
genwqe_start_traps(cd);
if (cd->card_state == GENWQE_CARD_FATAL_ERROR) {
dev_warn(&pci_dev->dev,
"[%s] chip reload/recovery!\n", __func__);
/*
* Stealth Mode: Reload chip on either hot
* reset or PERST.
*/
cd->softreset = 0x7Cull;
__genwqe_writeq(cd, IO_SLC_CFGREG_SOFTRESET,
cd->softreset);
err = genwqe_bus_reset(cd);
if (err != 0) {
dev_err(&pci_dev->dev,
"[%s] err: bus reset failed!\n",
__func__);
goto out;
}
/*
* Re-read the IDs because
* it could happen that the bitstream load
* failed!
*/
err = genwqe_read_ids(cd);
if (err)
goto out;
}
}
err = genwqe_setup_service_layer(cd); /* does a reset to the card */
if (err != 0) {
dev_err(&pci_dev->dev,
"[%s] err: could not setup servicelayer!\n", __func__);
err = -ENODEV;
goto out;
}
if (genwqe_is_privileged(cd)) { /* code is running _after_ reset */
genwqe_tweak_hardware(cd);
genwqe_setup_pf_jtimer(cd);
genwqe_setup_vf_jtimer(cd);
}
err = genwqe_device_create(cd);
if (err < 0) {
dev_err(&pci_dev->dev,
"err: chdev init failed! (err=%d)\n", err);
goto out_release_service_layer;
}
return 0;
out_release_service_layer:
genwqe_release_service_layer(cd);
out:
if (genwqe_is_privileged(cd))
genwqe_ffdc_buffs_free(cd);
return -EIO;
}
