/* SPDX-License-Identifier: BSD-3-Clause
*
- * Copyright(c) 2019-2020 Xilinx, Inc.
+ * Copyright(c) 2019-2021 Xilinx, Inc.
* Copyright(c) 2019 Solarflare Communications Inc.
*/
#if EFSYS_OPT_RIVERHEAD && EFSYS_OPT_PCI
+/*
+ * Search for a EF100 resource locator from the given offset of an entry
+ * in a Xilinx capabilities table.
+ */
+static __checkReturn efx_rc_t
+rhead_xilinx_cap_tbl_find_ef100_locator(
+ __in efsys_bar_t *esbp,
+ __in efsys_dma_addr_t tbl_offset,
+ __out efx_bar_region_t *ef100_ebrp)
+{
+ efx_rc_t rc;
+ efsys_dma_addr_t entry_offset = tbl_offset;
+
+ rc = efx_pci_xilinx_cap_tbl_find(esbp, ESE_GZ_CFGBAR_ENTRY_EF100,
+ B_FALSE, &entry_offset);
+ if (rc != 0) {
+ /* EF100 locator not found (ENOENT) or other error */
+ goto fail1;
+ }
+
+ rc = rhead_nic_xilinx_cap_tbl_read_ef100_locator(esbp, entry_offset,
+ ef100_ebrp);
+ if (rc != 0)
+ goto fail2;
+
+ return (0);
+
+fail2:
+ EFSYS_PROBE(fail2);
+fail1:
+ EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+ return (rc);
+}
+
__checkReturn efx_rc_t
rhead_pci_nic_membar_lookup(
__in efsys_pci_config_t *espcp,
+ __in const efx_pci_ops_t *epop,
__out efx_bar_region_t *ebrp)
{
boolean_t xilinx_tbl_found = B_FALSE;
boolean_t bar_found = B_FALSE;
efx_rc_t rc = ENOENT;
efsys_bar_t xil_eb;
+ efsys_bar_t nic_eb;
+ efx_dword_t magic_ed;
+ uint32_t magic;
/*
* SF-119689-TC Riverhead Host Interface section 4.2.2. describes
* the following discovery steps.
*/
while (1) {
- rc = efx_pci_find_next_xilinx_cap_table(espcp, &pci_capa_offset,
+ rc = efx_pci_find_next_xilinx_cap_table(espcp, epop,
+ &pci_capa_offset,
&xilinx_tbl_bar,
&xilinx_tbl_offset);
if (rc != 0) {
xilinx_tbl_found = B_TRUE;
- EFSYS_PCI_FIND_MEM_BAR(espcp, xilinx_tbl_bar, &xil_eb, &rc);
+ rc = epop->epo_find_mem_bar(espcp, xilinx_tbl_bar, &xil_eb);
if (rc != 0)
goto fail2;
+
+ rc = rhead_xilinx_cap_tbl_find_ef100_locator(&xil_eb,
+ xilinx_tbl_offset,
+ ebrp);
+ if (rc == 0) {
+ /* Found valid EF100 locator. */
+ bar_found = B_TRUE;
+ break;
+ } else if (rc != ENOENT) {
+ /* Table access failed, so terminate search. */
+ goto fail3;
+ }
}
if (bar_found == B_FALSE)
- goto fail3;
+ goto fail4;
+
+ rc = epop->epo_find_mem_bar(espcp, ebrp->ebr_index, &nic_eb);
+ if (rc != 0)
+ goto fail5;
+
+ EFSYS_BAR_READD(&nic_eb, ebrp->ebr_offset + ER_GZ_NIC_MAGIC_OFST,
+ &magic_ed, B_FALSE);
+
+ magic = EFX_DWORD_FIELD(magic_ed, ERF_GZ_NIC_MAGIC);
+ if (magic != EFE_GZ_NIC_MAGIC_EXPECTED) {
+ rc = EINVAL;
+ goto fail6;
+ }
return (0);
+fail6:
+ EFSYS_PROBE(fail6);
+fail5:
+ EFSYS_PROBE(fail5);
+fail4:
+ EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2: