in hw/intel/ntb_hw_gen1.c [491:755]
static ssize_t ndev_ntb_debugfs_read(struct file *filp, char __user *ubuf,
size_t count, loff_t *offp)
{
struct intel_ntb_dev *ndev;
struct pci_dev *pdev;
void __iomem *mmio;
char *buf;
size_t buf_size;
ssize_t ret, off;
union { u64 v64; u32 v32; u16 v16; u8 v8; } u;
ndev = filp->private_data;
pdev = ndev->ntb.pdev;
mmio = ndev->self_mmio;
buf_size = min(count, 0x800ul);
buf = kmalloc(buf_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
off = 0;
off += scnprintf(buf + off, buf_size - off,
"NTB Device Information:\n");
off += scnprintf(buf + off, buf_size - off,
"Connection Topology -\t%s\n",
ntb_topo_string(ndev->ntb.topo));
if (ndev->b2b_idx != UINT_MAX) {
off += scnprintf(buf + off, buf_size - off,
"B2B MW Idx -\t\t%u\n", ndev->b2b_idx);
off += scnprintf(buf + off, buf_size - off,
"B2B Offset -\t\t%#lx\n", ndev->b2b_off);
}
off += scnprintf(buf + off, buf_size - off,
"BAR4 Split -\t\t%s\n",
ndev->bar4_split ? "yes" : "no");
off += scnprintf(buf + off, buf_size - off,
"NTB CTL -\t\t%#06x\n", ndev->ntb_ctl);
off += scnprintf(buf + off, buf_size - off,
"LNK STA -\t\t%#06x\n", ndev->lnk_sta);
if (!ndev->reg->link_is_up(ndev)) {
off += scnprintf(buf + off, buf_size - off,
"Link Status -\t\tDown\n");
} else {
off += scnprintf(buf + off, buf_size - off,
"Link Status -\t\tUp\n");
off += scnprintf(buf + off, buf_size - off,
"Link Speed -\t\tPCI-E Gen %u\n",
NTB_LNK_STA_SPEED(ndev->lnk_sta));
off += scnprintf(buf + off, buf_size - off,
"Link Width -\t\tx%u\n",
NTB_LNK_STA_WIDTH(ndev->lnk_sta));
}
off += scnprintf(buf + off, buf_size - off,
"Memory Window Count -\t%u\n", ndev->mw_count);
off += scnprintf(buf + off, buf_size - off,
"Scratchpad Count -\t%u\n", ndev->spad_count);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Count -\t%u\n", ndev->db_count);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Vector Count -\t%u\n", ndev->db_vec_count);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Vector Shift -\t%u\n", ndev->db_vec_shift);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Valid Mask -\t%#llx\n", ndev->db_valid_mask);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Link Mask -\t%#llx\n", ndev->db_link_mask);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Mask Cached -\t%#llx\n", ndev->db_mask);
u.v64 = ndev_db_read(ndev, mmio + ndev->self_reg->db_mask);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Mask -\t\t%#llx\n", u.v64);
u.v64 = ndev_db_read(ndev, mmio + ndev->self_reg->db_bell);
off += scnprintf(buf + off, buf_size - off,
"Doorbell Bell -\t\t%#llx\n", u.v64);
off += scnprintf(buf + off, buf_size - off,
"\nNTB Window Size:\n");
pci_read_config_byte(pdev, XEON_PBAR23SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"PBAR23SZ %hhu\n", u.v8);
if (!ndev->bar4_split) {
pci_read_config_byte(pdev, XEON_PBAR45SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"PBAR45SZ %hhu\n", u.v8);
} else {
pci_read_config_byte(pdev, XEON_PBAR4SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"PBAR4SZ %hhu\n", u.v8);
pci_read_config_byte(pdev, XEON_PBAR5SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"PBAR5SZ %hhu\n", u.v8);
}
pci_read_config_byte(pdev, XEON_SBAR23SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"SBAR23SZ %hhu\n", u.v8);
if (!ndev->bar4_split) {
pci_read_config_byte(pdev, XEON_SBAR45SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"SBAR45SZ %hhu\n", u.v8);
} else {
pci_read_config_byte(pdev, XEON_SBAR4SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"SBAR4SZ %hhu\n", u.v8);
pci_read_config_byte(pdev, XEON_SBAR5SZ_OFFSET, &u.v8);
off += scnprintf(buf + off, buf_size - off,
"SBAR5SZ %hhu\n", u.v8);
}
off += scnprintf(buf + off, buf_size - off,
"\nNTB Incoming XLAT:\n");
u.v64 = ioread64(mmio + bar2_off(ndev->xlat_reg->bar2_xlat, 2));
off += scnprintf(buf + off, buf_size - off,
"XLAT23 -\t\t%#018llx\n", u.v64);
if (ndev->bar4_split) {
u.v32 = ioread32(mmio + bar2_off(ndev->xlat_reg->bar2_xlat, 4));
off += scnprintf(buf + off, buf_size - off,
"XLAT4 -\t\t\t%#06x\n", u.v32);
u.v32 = ioread32(mmio + bar2_off(ndev->xlat_reg->bar2_xlat, 5));
off += scnprintf(buf + off, buf_size - off,
"XLAT5 -\t\t\t%#06x\n", u.v32);
} else {
u.v64 = ioread64(mmio + bar2_off(ndev->xlat_reg->bar2_xlat, 4));
off += scnprintf(buf + off, buf_size - off,
"XLAT45 -\t\t%#018llx\n", u.v64);
}
u.v64 = ioread64(mmio + bar2_off(ndev->xlat_reg->bar2_limit, 2));
off += scnprintf(buf + off, buf_size - off,
"LMT23 -\t\t\t%#018llx\n", u.v64);
if (ndev->bar4_split) {
u.v32 = ioread32(mmio + bar2_off(ndev->xlat_reg->bar2_limit, 4));
off += scnprintf(buf + off, buf_size - off,
"LMT4 -\t\t\t%#06x\n", u.v32);
u.v32 = ioread32(mmio + bar2_off(ndev->xlat_reg->bar2_limit, 5));
off += scnprintf(buf + off, buf_size - off,
"LMT5 -\t\t\t%#06x\n", u.v32);
} else {
u.v64 = ioread64(mmio + bar2_off(ndev->xlat_reg->bar2_limit, 4));
off += scnprintf(buf + off, buf_size - off,
"LMT45 -\t\t\t%#018llx\n", u.v64);
}
if (pdev_is_gen1(pdev)) {
if (ntb_topo_is_b2b(ndev->ntb.topo)) {
off += scnprintf(buf + off, buf_size - off,
"\nNTB Outgoing B2B XLAT:\n");
u.v64 = ioread64(mmio + XEON_PBAR23XLAT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B XLAT23 -\t\t%#018llx\n", u.v64);
if (ndev->bar4_split) {
u.v32 = ioread32(mmio + XEON_PBAR4XLAT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B XLAT4 -\t\t%#06x\n",
u.v32);
u.v32 = ioread32(mmio + XEON_PBAR5XLAT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B XLAT5 -\t\t%#06x\n",
u.v32);
} else {
u.v64 = ioread64(mmio + XEON_PBAR45XLAT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B XLAT45 -\t\t%#018llx\n",
u.v64);
}
u.v64 = ioread64(mmio + XEON_PBAR23LMT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B LMT23 -\t\t%#018llx\n", u.v64);
if (ndev->bar4_split) {
u.v32 = ioread32(mmio + XEON_PBAR4LMT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B LMT4 -\t\t%#06x\n",
u.v32);
u.v32 = ioread32(mmio + XEON_PBAR5LMT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B LMT5 -\t\t%#06x\n",
u.v32);
} else {
u.v64 = ioread64(mmio + XEON_PBAR45LMT_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"B2B LMT45 -\t\t%#018llx\n",
u.v64);
}
off += scnprintf(buf + off, buf_size - off,
"\nNTB Secondary BAR:\n");
u.v64 = ioread64(mmio + XEON_SBAR0BASE_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"SBAR01 -\t\t%#018llx\n", u.v64);
u.v64 = ioread64(mmio + XEON_SBAR23BASE_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"SBAR23 -\t\t%#018llx\n", u.v64);
if (ndev->bar4_split) {
u.v32 = ioread32(mmio + XEON_SBAR4BASE_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"SBAR4 -\t\t\t%#06x\n", u.v32);
u.v32 = ioread32(mmio + XEON_SBAR5BASE_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"SBAR5 -\t\t\t%#06x\n", u.v32);
} else {
u.v64 = ioread64(mmio + XEON_SBAR45BASE_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"SBAR45 -\t\t%#018llx\n",
u.v64);
}
}
off += scnprintf(buf + off, buf_size - off,
"\nXEON NTB Statistics:\n");
u.v16 = ioread16(mmio + XEON_USMEMMISS_OFFSET);
off += scnprintf(buf + off, buf_size - off,
"Upstream Memory Miss -\t%u\n", u.v16);
off += scnprintf(buf + off, buf_size - off,
"\nXEON NTB Hardware Errors:\n");
if (!pci_read_config_word(pdev,
XEON_DEVSTS_OFFSET, &u.v16))
off += scnprintf(buf + off, buf_size - off,
"DEVSTS -\t\t%#06x\n", u.v16);
if (!pci_read_config_word(pdev,
XEON_LINK_STATUS_OFFSET, &u.v16))
off += scnprintf(buf + off, buf_size - off,
"LNKSTS -\t\t%#06x\n", u.v16);
if (!pci_read_config_dword(pdev,
XEON_UNCERRSTS_OFFSET, &u.v32))
off += scnprintf(buf + off, buf_size - off,
"UNCERRSTS -\t\t%#06x\n", u.v32);
if (!pci_read_config_dword(pdev,
XEON_CORERRSTS_OFFSET, &u.v32))
off += scnprintf(buf + off, buf_size - off,
"CORERRSTS -\t\t%#06x\n", u.v32);
}
ret = simple_read_from_buffer(ubuf, count, offp, buf, off);
kfree(buf);
return ret;
}