static ssize_t appid_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
char app_name[5];
struct genwqe_dev *cd = dev_get_drvdata(dev);
genwqe_read_app_id(cd, app_name, sizeof(app_name));
return sprintf(buf, "%s\n", app_name);
}
static int genwqe_read_ids(struct genwqe_dev *cd)
{
int err = 0;
int slu_id;
struct pci_dev *pci_dev = cd->pci_dev;
cd->slu_unitcfg = __genwqe_readq(cd, IO_SLU_UNITCFG);
if (cd->slu_unitcfg == IO_ILLEGAL_VALUE) {
dev_err(&pci_dev->dev,
"err: SLUID=%016llx\n", cd->slu_unitcfg);
err = -EIO;
goto out_err;
}
slu_id = genwqe_get_slu_id(cd);
if (slu_id < GENWQE_SLU_ARCH_REQ || slu_id == 0xff) {
dev_err(&pci_dev->dev,
"err: incompatible SLU Architecture %u\n", slu_id);
err = -ENOENT;
goto out_err;
}
cd->app_unitcfg = __genwqe_readq(cd, IO_APP_UNITCFG);
if (cd->app_unitcfg == IO_ILLEGAL_VALUE) {
dev_err(&pci_dev->dev,
"err: APPID=%016llx\n", cd->app_unitcfg);
err = -EIO;
goto out_err;
}
genwqe_read_app_id(cd, cd->app_name, sizeof(cd->app_name));
/*
* Is access to all registers possible? If we are a VF the
* answer is obvious. If we run fully virtualized, we need to
* check if we can access all registers. If we do not have
* full access we will cause an UR and some informational FIRs
* in the PF, but that should not harm.
*/
if (pci_dev->is_virtfn)
cd->is_privileged = 0;
else
cd->is_privileged = (__genwqe_readq(cd, IO_SLU_BITSTREAM)
!= IO_ILLEGAL_VALUE);
out_err:
return err;
}
