+int ecore_int_igu_reset_cam(struct ecore_hwfn *p_hwfn,
+ struct ecore_ptt *p_ptt)
+{
+ struct ecore_igu_info *p_info = p_hwfn->hw_info.p_igu_info;
+ struct ecore_igu_block *p_block;
+ int pf_sbs, vf_sbs;
+ u16 igu_sb_id;
+ u32 val, rval;
+
+ if (!RESC_NUM(p_hwfn, ECORE_SB)) {
+ /* We're using an old MFW - have to prevent any switching
+ * of SBs between PF and VFs as later driver wouldn't be
+ * able to tell which belongs to which.
+ */
+ p_info->b_allow_pf_vf_change = false;
+ } else {
+ /* Use the numbers the MFW have provided -
+ * don't forget MFW accounts for the default SB as well.
+ */
+ p_info->b_allow_pf_vf_change = true;
+
+ if (p_info->usage.cnt != RESC_NUM(p_hwfn, ECORE_SB) - 1) {
+ DP_INFO(p_hwfn,
+ "MFW notifies of 0x%04x PF SBs; IGU indicates of only 0x%04x\n",
+ RESC_NUM(p_hwfn, ECORE_SB) - 1,
+ p_info->usage.cnt);
+ p_info->usage.cnt = RESC_NUM(p_hwfn, ECORE_SB) - 1;
+ }
+
+ /* TODO - how do we learn about VF SBs from MFW? */
+ if (IS_PF_SRIOV(p_hwfn)) {
+ u16 vfs = p_hwfn->p_dev->p_iov_info->total_vfs;
+
+ if (vfs != p_info->usage.iov_cnt)
+ DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+ "0x%04x VF SBs in IGU CAM != PCI configuration 0x%04x\n",
+ p_info->usage.iov_cnt, vfs);
+
+ /* At this point we know how many SBs we have totally
+ * in IGU + number of PF SBs. So we can validate that
+ * we'd have sufficient for VF.
+ */
+ if (vfs > p_info->usage.free_cnt +
+ p_info->usage.free_cnt_iov -
+ p_info->usage.cnt) {
+ DP_NOTICE(p_hwfn, true,
+ "Not enough SBs for VFs - 0x%04x SBs, from which %04x PFs and %04x are required\n",
+ p_info->usage.free_cnt +
+ p_info->usage.free_cnt_iov,
+ p_info->usage.cnt, vfs);
+ return ECORE_INVAL;
+ }
+ }
+ }
+
+ /* Cap the number of VFs SBs by the number of VFs */
+ if (IS_PF_SRIOV(p_hwfn))
+ p_info->usage.iov_cnt = p_hwfn->p_dev->p_iov_info->total_vfs;
+
+ /* Mark all SBs as free, now in the right PF/VFs division */
+ p_info->usage.free_cnt = p_info->usage.cnt;
+ p_info->usage.free_cnt_iov = p_info->usage.iov_cnt;
+ p_info->usage.orig = p_info->usage.cnt;
+ p_info->usage.iov_orig = p_info->usage.iov_cnt;
+
+ /* We now proceed to re-configure the IGU cam to reflect the initial
+ * configuration. We can start with the Default SB.
+ */
+ pf_sbs = p_info->usage.cnt;
+ vf_sbs = p_info->usage.iov_cnt;
+
+ for (igu_sb_id = p_info->igu_dsb_id;
+ igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+ igu_sb_id++) {
+ p_block = &p_info->entry[igu_sb_id];
+ val = 0;
+
+ if (!(p_block->status & ECORE_IGU_STATUS_VALID))
+ continue;
+
+ if (p_block->status & ECORE_IGU_STATUS_DSB) {
+ p_block->function_id = p_hwfn->rel_pf_id;
+ p_block->is_pf = 1;
+ p_block->vector_number = 0;
+ p_block->status = ECORE_IGU_STATUS_VALID |
+ ECORE_IGU_STATUS_PF |
+ ECORE_IGU_STATUS_DSB;
+ } else if (pf_sbs) {
+ pf_sbs--;
+ p_block->function_id = p_hwfn->rel_pf_id;
+ p_block->is_pf = 1;
+ p_block->vector_number = p_info->usage.cnt - pf_sbs;
+ p_block->status = ECORE_IGU_STATUS_VALID |
+ ECORE_IGU_STATUS_PF |
+ ECORE_IGU_STATUS_FREE;
+ } else if (vf_sbs) {
+ p_block->function_id =
+ p_hwfn->p_dev->p_iov_info->first_vf_in_pf +
+ p_info->usage.iov_cnt - vf_sbs;
+ p_block->is_pf = 0;
+ p_block->vector_number = 0;
+ p_block->status = ECORE_IGU_STATUS_VALID |
+ ECORE_IGU_STATUS_FREE;
+ vf_sbs--;
+ } else {
+ p_block->function_id = 0;
+ p_block->is_pf = 0;
+ p_block->vector_number = 0;
+ }
+
+ SET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER,
+ p_block->function_id);
+ SET_FIELD(val, IGU_MAPPING_LINE_PF_VALID, p_block->is_pf);
+ SET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER,
+ p_block->vector_number);
+
+ /* VF entries would be enabled when VF is initializaed */
+ SET_FIELD(val, IGU_MAPPING_LINE_VALID, p_block->is_pf);
+
+ rval = ecore_rd(p_hwfn, p_ptt,
+ IGU_REG_MAPPING_MEMORY +
+ sizeof(u32) * igu_sb_id);
+
+ if (rval != val) {
+ ecore_wr(p_hwfn, p_ptt,
+ IGU_REG_MAPPING_MEMORY +
+ sizeof(u32) * igu_sb_id,
+ val);
+
+ DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+ "IGU reset: [SB 0x%04x] func_id = %d is_pf = %d vector_num = 0x%x [%08x -> %08x]\n",
+ igu_sb_id, p_block->function_id,
+ p_block->is_pf, p_block->vector_number,
+ rval, val);
+ }
+ }
+
+ return 0;
+}
+
+int ecore_int_igu_reset_cam_default(struct ecore_hwfn *p_hwfn,
+ struct ecore_ptt *p_ptt)
+{
+ struct ecore_sb_cnt_info *p_cnt = &p_hwfn->hw_info.p_igu_info->usage;
+
+ /* Return all the usage indications to default prior to the reset;
+ * The reset expects the !orig to reflect the initial status of the
+ * SBs, and would re-calculate the originals based on those.
+ */
+ p_cnt->cnt = p_cnt->orig;
+ p_cnt->free_cnt = p_cnt->orig;
+ p_cnt->iov_cnt = p_cnt->iov_orig;
+ p_cnt->free_cnt_iov = p_cnt->iov_orig;
+ p_cnt->orig = 0;
+ p_cnt->iov_orig = 0;
+
+ /* TODO - we probably need to re-configure the CAU as well... */
+ return ecore_int_igu_reset_cam(p_hwfn, p_ptt);