static int hfi1_vnic_allot_ctxt(struct hfi1_devdata *dd,
struct hfi1_ctxtdata **vnic_ctxt)
{
int rc;
rc = allocate_vnic_ctxt(dd, vnic_ctxt);
if (rc) {
dd_dev_err(dd, "vnic ctxt alloc failed %d\n", rc);
return rc;
}
rc = setup_vnic_ctxt(dd, *vnic_ctxt);
if (rc) {
dd_dev_err(dd, "vnic ctxt setup failed %d\n", rc);
deallocate_vnic_ctxt(dd, *vnic_ctxt);
*vnic_ctxt = NULL;
}
return rc;
}
/*
* Initialize the EPROM handler.
*/
int eprom_init(struct hfi1_devdata *dd)
{
int ret = 0;
/* only the discrete chip has an EPROM */
if (dd->pcidev->device != PCI_DEVICE_ID_INTEL0)
return 0;
/*
* It is OK if both HFIs reset the EPROM as long as they don't
* do it at the same time.
*/
ret = acquire_chip_resource(dd, CR_EPROM, EPROM_TIMEOUT);
if (ret) {
dd_dev_err(dd,
"%s: unable to acquire EPROM resource, no EPROM support\n",
__func__);
goto done_asic;
}
/* reset EPROM to be sure it is in a good state */
/* set reset */
write_csr(dd, ASIC_EEP_CTL_STAT, ASIC_EEP_CTL_STAT_EP_RESET_SMASK);
/* clear reset, set speed */
write_csr(dd, ASIC_EEP_CTL_STAT,
EP_SPEED_FULL << ASIC_EEP_CTL_STAT_RATE_SPI_SHIFT);
/* wake the device with command "release powerdown NoID" */
write_csr(dd, ASIC_EEP_ADDR_CMD, CMD_RELEASE_POWERDOWN_NOID);
dd->eprom_available = true;
release_chip_resource(dd, CR_EPROM);
done_asic:
return ret;
}
int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num,
struct kobject *kobj)
{
struct hfi1_pportdata *ppd;
struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
int ret;
if (!port_num || port_num > dd->num_pports) {
dd_dev_err(dd,
"Skipping infiniband class with invalid port %u\n",
port_num);
return -ENODEV;
}
ppd = &dd->pport[port_num - 1];
ret = kobject_init_and_add(&ppd->sc2vl_kobj, &hfi1_sc2vl_ktype, kobj,
"sc2vl");
if (ret) {
dd_dev_err(dd,
"Skipping sc2vl sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail;
}
kobject_uevent(&ppd->sc2vl_kobj, KOBJ_ADD);
ret = kobject_init_and_add(&ppd->sl2sc_kobj, &hfi1_sl2sc_ktype, kobj,
"sl2sc");
if (ret) {
dd_dev_err(dd,
"Skipping sl2sc sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail_sc2vl;
}
kobject_uevent(&ppd->sl2sc_kobj, KOBJ_ADD);
ret = kobject_init_and_add(&ppd->vl2mtu_kobj, &hfi1_vl2mtu_ktype, kobj,
"vl2mtu");
if (ret) {
dd_dev_err(dd,
"Skipping vl2mtu sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail_sl2sc;
}
kobject_uevent(&ppd->vl2mtu_kobj, KOBJ_ADD);
ret = kobject_init_and_add(&ppd->pport_cc_kobj, &port_cc_ktype,
kobj, "CCMgtA");
if (ret) {
dd_dev_err(dd,
"Skipping Congestion Control sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail_vl2mtu;
}
kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
if (ret) {
dd_dev_err(dd,
"Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail_cc;
}
ret = sysfs_create_bin_file(&ppd->pport_cc_kobj, &cc_table_bin_attr);
if (ret) {
dd_dev_err(dd,
"Skipping Congestion Control table sysfs info, (err %d) port %u\n",
ret, port_num);
goto bail_cc_entry_bin;
}
dd_dev_info(dd,
"Congestion Control Agent enabled for port %d\n",
port_num);
return 0;
bail_cc_entry_bin:
sysfs_remove_bin_file(&ppd->pport_cc_kobj,
&cc_setting_bin_attr);
bail_cc:
kobject_put(&ppd->pport_cc_kobj);
bail_vl2mtu:
kobject_put(&ppd->vl2mtu_kobj);
bail_sl2sc:
kobject_put(&ppd->sl2sc_kobj);
bail_sc2vl:
kobject_put(&ppd->sc2vl_kobj);
bail:
return ret;
}
static int allocate_vnic_ctxt(struct hfi1_devdata *dd,
struct hfi1_ctxtdata **vnic_ctxt)
{
struct hfi1_ctxtdata *uctxt;
unsigned int ctxt;
int ret;
if (dd->flags & HFI1_FROZEN)
return -EIO;
for (ctxt = dd->first_dyn_alloc_ctxt;
ctxt < dd->num_rcv_contexts; ctxt++)
if (!dd->rcd[ctxt])
break;
if (ctxt == dd->num_rcv_contexts)
return -EBUSY;
uctxt = hfi1_create_ctxtdata(dd->pport, ctxt, dd->node);
if (!uctxt) {
dd_dev_err(dd, "Unable to create ctxtdata, failing open\n");
return -ENOMEM;
}
uctxt->flags = HFI1_CAP_KGET(MULTI_PKT_EGR) |
HFI1_CAP_KGET(NODROP_RHQ_FULL) |
HFI1_CAP_KGET(NODROP_EGR_FULL) |
HFI1_CAP_KGET(DMA_RTAIL);
uctxt->seq_cnt = 1;
/* Allocate and enable a PIO send context */
uctxt->sc = sc_alloc(dd, SC_VNIC, uctxt->rcvhdrqentsize,
uctxt->numa_id);
ret = uctxt->sc ? 0 : -ENOMEM;
if (ret)
goto bail;
dd_dev_dbg(dd, "allocated vnic send context %u(%u)\n",
uctxt->sc->sw_index, uctxt->sc->hw_context);
ret = sc_enable(uctxt->sc);
if (ret)
goto bail;
if (dd->num_msix_entries)
hfi1_set_vnic_msix_info(uctxt);
hfi1_stats.sps_ctxts++;
dd_dev_dbg(dd, "created vnic context %d\n", uctxt->ctxt);
*vnic_ctxt = uctxt;
return ret;
bail:
/*
* hfi1_free_ctxtdata() also releases send_context
* structure if uctxt->sc is not null
*/
dd->rcd[uctxt->ctxt] = NULL;
hfi1_free_ctxtdata(dd, uctxt);
dd_dev_dbg(dd, "vnic allocation failed. rc %d\n", ret);
return ret;
}
/*
* The segment magic has been checked. There is a footer and table of
* contents present.
*
* directory is a u32 aligned buffer of size EP_PAGE_SIZE.
*/
static int read_segment_platform_config(struct hfi1_devdata *dd,
void *directory, void **data, u32 *size)
{
struct hfi1_eprom_footer *footer;
struct hfi1_eprom_table_entry *table;
struct hfi1_eprom_table_entry *entry;
void *buffer = NULL;
void *table_buffer = NULL;
int ret, i;
u32 directory_size;
u32 seg_base, seg_offset;
u32 bytes_available, ncopied, to_copy;
/* the footer is at the end of the directory */
footer = (struct hfi1_eprom_footer *)
(directory + EP_PAGE_SIZE - sizeof(*footer));
/* make sure the structure version is supported */
if (footer->version != FOOTER_VERSION)
return -EINVAL;
/* oprom size cannot be larger than a segment */
if (footer->oprom_size >= SEG_SIZE)
return -EINVAL;
/* the file table must fit in a segment with the oprom */
if (footer->num_table_entries >
MAX_TABLE_ENTRIES(SEG_SIZE - footer->oprom_size))
return -EINVAL;
/* find the file table start, which precedes the footer */
directory_size = DIRECTORY_SIZE(footer->num_table_entries);
if (directory_size <= EP_PAGE_SIZE) {
/* the file table fits into the directory buffer handed in */
table = (struct hfi1_eprom_table_entry *)
(directory + EP_PAGE_SIZE - directory_size);
} else {
/* need to allocate and read more */
table_buffer = kmalloc(directory_size, GFP_KERNEL);
if (!table_buffer)
return -ENOMEM;
ret = read_length(dd, SEG_SIZE - directory_size,
directory_size, table_buffer);
if (ret)
goto done;
table = table_buffer;
}
/* look for the platform configuration file in the table */
for (entry = NULL, i = 0; i < footer->num_table_entries; i++) {
if (table[i].type == HFI1_EFT_PLATFORM_CONFIG) {
entry = &table[i];
break;
}
}
if (!entry) {
ret = -ENOENT;
goto done;
}
/*
* Sanity check on the configuration file size - it should never
* be larger than 4 KiB.
*/
if (entry->size > (4 * 1024)) {
dd_dev_err(dd, "Bad configuration file size 0x%x\n",
entry->size);
ret = -EINVAL;
goto done;
}
/* check for bogus offset and size that wrap when added together */
if (entry->offset + entry->size < entry->offset) {
dd_dev_err(dd,
"Bad configuration file start + size 0x%x+0x%x\n",
entry->offset, entry->size);
ret = -EINVAL;
goto done;
}
/* allocate the buffer to return */
buffer = kmalloc(entry->size, GFP_KERNEL);
if (!buffer) {
ret = -ENOMEM;
goto done;
}
/*
* Extract the file by looping over segments until it is fully read.
*/
seg_offset = entry->offset % SEG_SIZE;
seg_base = entry->offset - seg_offset;
ncopied = 0;
while (ncopied < entry->size) {
/* calculate data bytes available in this segment */
/* start with the bytes from the current offset to the end */
bytes_available = SEG_SIZE - seg_offset;
/* subtract off footer and table from segment 0 */
if (seg_base == 0) {
/*
* Sanity check: should not have a starting point
* at or within the directory.
*/
if (bytes_available <= directory_size) {
dd_dev_err(dd,
"Bad configuration file - offset 0x%x within footer+table\n",
entry->offset);
ret = -EINVAL;
goto done;
}
bytes_available -= directory_size;
}
/* calculate bytes wanted */
to_copy = entry->size - ncopied;
/* max out at the available bytes in this segment */
if (to_copy > bytes_available)
to_copy = bytes_available;
/*
* Read from the EPROM.
*
* The sanity check for entry->offset is done in read_length().
* The EPROM offset is validated against what the hardware
* addressing supports. In addition, if the offset is larger
* than the actual EPROM, it silently wraps. It will work
* fine, though the reader may not get what they expected
* from the EPROM.
*/
ret = read_length(dd, seg_base + seg_offset, to_copy,
buffer + ncopied);
if (ret)
goto done;
ncopied += to_copy;
/* set up for next segment */
seg_offset = footer->oprom_size;
seg_base += SEG_SIZE;
}
/* success */
ret = 0;
*data = buffer;
*size = entry->size;
done:
kfree(table_buffer);
if (ret)
kfree(buffer);
return ret;
}
