The patch moves functions related to releasing PE around so that
we don't need extra declaration for them in subsequent patches.
It doesn't introduce any behavioural changes.
Signed-off-by: Gavin Shan <gws...@linux.vnet.ibm.com>
---
v5:
* Split from PATCH[v4 07/21]
* Fixed coding style complained by checkpatch.pl
---
arch/powerpc/platforms/powernv/pci-ioda.c | 735 +++++++++++++++---------------
1 file changed, 369 insertions(+), 366 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
b/arch/powerpc/platforms/powernv/pci-ioda.c
index 8a79403..3d5aec8d 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -132,6 +132,285 @@ static inline bool pnv_pci_is_mem_pref_64(unsigned long
flags)
(IORESOURCE_MEM_64 | IORESOURCE_PREFETCH));
}
+static inline void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_ioda_pe *pe)
+{
+ /* 01xb - invalidate TCEs that match the specified PE# */
+ unsigned long val = (0x4ull << 60) | (pe->pe_number & 0xFF);
+ struct pnv_phb *phb = pe->phb;
+
+ if (!phb->ioda.tce_inval_reg)
+ return;
+
+ mb(); /* Ensure above stores are visible */
+ __raw_writeq(cpu_to_be64(val), phb->ioda.tce_inval_reg);
+}
+
+static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group,
+ int num)
+{
+ struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,
+ table_group);
+ struct pnv_phb *phb = pe->phb;
+ long ret;
+
+ pe_info(pe, "Removing DMA window #%d\n", num);
+
+ ret = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
+ (pe->pe_number << 1) + num,
+ 0/* levels */, 0/* table address */,
+ 0/* table size */, 0/* page size */);
+ if (ret)
+ pe_warn(pe, "Unmapping failed, ret = %ld\n", ret);
+ else
+ pnv_pci_ioda2_tce_invalidate_entire(pe);
+
+ pnv_pci_unlink_table_and_group(table_group->tables[num], table_group);
+
+ return ret;
+}
+
+static void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable)
+{
+ uint16_t window_id = (pe->pe_number << 1) + 1;
+ int64_t rc;
+
+ pe_info(pe, "%sabling 64-bit DMA bypass\n", enable ? "En" : "Dis");
+ if (enable) {
+ phys_addr_t top = memblock_end_of_DRAM();
+
+ top = roundup_pow_of_two(top);
+ rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id,
+ pe->pe_number,
+ window_id,
+ pe->tce_bypass_base,
+ top);
+ } else {
+ rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id,
+ pe->pe_number,
+ window_id,
+ pe->tce_bypass_base,
+ 0);
+ }
+ if (rc)
+ pe_err(pe, "OPAL error %lld configuring bypass window\n", rc);
+ else
+ pe->tce_bypass_enabled = enable;
+}
+
+static void pnv_pci_ioda2_release_dma_pe(struct pci_dev *dev,
+ struct pnv_ioda_pe *pe)
+{
+ struct iommu_table *tbl;
+ int64_t rc;
+
+ tbl = pe->table_group.tables[0];
+ rc = pnv_pci_ioda2_unset_window(&pe->table_group, 0);
+ if (rc)
+ pe_warn(pe, "OPAL error %ld release DMA window\n", rc);
+
+ pnv_pci_ioda2_set_bypass(pe, false);
+ if (pe->table_group.group) {
+ iommu_group_put(pe->table_group.group);
+ BUG_ON(pe->table_group.group);
+ }
+ pnv_pci_ioda2_table_free_pages(tbl);
+ iommu_free_table(tbl, of_node_full_name(dev->dev.of_node));
+}
+
+static int pnv_ioda_set_one_peltv(struct pnv_phb *phb,
+ struct pnv_ioda_pe *parent,
+ struct pnv_ioda_pe *child,
+ bool is_add)
+{
+ const char *desc = is_add ? "adding" : "removing";
+ uint8_t op = is_add ? OPAL_ADD_PE_TO_DOMAIN :
+ OPAL_REMOVE_PE_FROM_DOMAIN;
+ struct pnv_ioda_pe *slave;
+ long rc;
+
+ /* Parent PE affects child PE */
+ rc = opal_pci_set_peltv(phb->opal_id, parent->pe_number,
+ child->pe_number, op);
+ if (rc != OPAL_SUCCESS) {
+ pe_warn(child, "OPAL error %ld %s to parent PELTV\n",
+ rc, desc);
+ return -ENXIO;
+ }
+
+ if (!(child->flags & PNV_IODA_PE_MASTER))
+ return 0;
+
+ /* Compound case: parent PE affects slave PEs */
+ list_for_each_entry(slave, &child->slaves, list) {
+ rc = opal_pci_set_peltv(phb->opal_id, parent->pe_number,
+ slave->pe_number, op);
+ if (rc != OPAL_SUCCESS) {
+ pe_warn(slave, "OPAL error %ld %s to parent PELTV\n",
+ rc, desc);
+ return -ENXIO;
+ }
+ }
+
+ return 0;
+}
+
+static int pnv_ioda_set_peltv(struct pnv_phb *phb,
+ struct pnv_ioda_pe *pe,
+ bool is_add)
+{
+ struct pnv_ioda_pe *slave;
+ struct pci_dev *pdev = NULL;
+ int ret;
+
+ /*
+ * Clear PE frozen state. If it's master PE, we need
+ * clear slave PE frozen state as well.
+ */
+ if (is_add) {
+ opal_pci_eeh_freeze_clear(phb->opal_id, pe->pe_number,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
+ if (pe->flags & PNV_IODA_PE_MASTER) {
+ list_for_each_entry(slave, &pe->slaves, list)
+ opal_pci_eeh_freeze_clear(phb->opal_id,
+ slave->pe_number,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
+ }
+ }
+
+ /*
+ * Associate PE in PELT. We need add the PE into the
+ * corresponding PELT-V as well. Otherwise, the error
+ * originated from the PE might contribute to other
+ * PEs.
+ */
+ ret = pnv_ioda_set_one_peltv(phb, pe, pe, is_add);
+ if (ret)
+ return ret;
+
+ /* For compound PEs, any one affects all of them */
+ if (pe->flags & PNV_IODA_PE_MASTER) {
+ list_for_each_entry(slave, &pe->slaves, list) {
+ ret = pnv_ioda_set_one_peltv(phb, slave, pe, is_add);
+ if (ret)
+ return ret;
+ }
+ }
+
+ if (pe->flags & (PNV_IODA_PE_BUS_ALL | PNV_IODA_PE_BUS))
+ pdev = pe->pbus->self;
+ else if (pe->flags & PNV_IODA_PE_DEV)
+ pdev = pe->pdev->bus->self;
+#ifdef CONFIG_PCI_IOV
+ else if (pe->flags & PNV_IODA_PE_VF)
+ pdev = pe->parent_dev->bus->self;
+#endif /* CONFIG_PCI_IOV */
+ while (pdev) {
+ struct pci_dn *pdn = pci_get_pdn(pdev);
+ struct pnv_ioda_pe *parent;
+
+ if (pdn && pdn->pe_number != IODA_INVALID_PE) {
+ parent = &phb->ioda.pe_array[pdn->pe_number];
+ ret = pnv_ioda_set_one_peltv(phb, parent, pe, is_add);
+ if (ret)
+ return ret;
+ }
+
+ pdev = pdev->bus->self;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PCI_IOV
+static int pnv_ioda_deconfigure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe)
+{
+ struct pci_dev *parent;
+ uint8_t bcomp, dcomp, fcomp;
+ int64_t rc;
+ long rid_end, rid;
+
+ /* Currently, we just deconfigure VF PE. Bus PE will always there.*/
+ if (pe->pbus) {
+ int count;
+
+ dcomp = OPAL_IGNORE_RID_DEVICE_NUMBER;
+ fcomp = OPAL_IGNORE_RID_FUNCTION_NUMBER;
+ parent = pe->pbus->self;
+ if (pe->flags & PNV_IODA_PE_BUS_ALL)
+ count = pe->pbus->busn_res.end -
+ pe->pbus->busn_res.start + 1;
+ else
+ count = 1;
+
+ switch (count) {
+ case 1:
+ bcomp = OpalPciBusAll; break;
+ case 2:
+ bcomp = OpalPciBus7Bits; break;
+ case 4:
+ bcomp = OpalPciBus6Bits; break;
+ case 8:
+ bcomp = OpalPciBus5Bits; break;
+ case 16:
+ bcomp = OpalPciBus4Bits; break;
+ case 32:
+ bcomp = OpalPciBus3Bits; break;
+ default:
+ dev_err(&pe->pbus->dev, "Number of subordinate buses %d
unsupported\n",
+ count);
+ /* Do an exact match only */
+ bcomp = OpalPciBusAll;
+ }
+ rid_end = pe->rid + (count << 8);
+ } else {
+ if (pe->flags & PNV_IODA_PE_VF)
+ parent = pe->parent_dev;
+ else
+ parent = pe->pdev->bus->self;
+ bcomp = OpalPciBusAll;
+ dcomp = OPAL_COMPARE_RID_DEVICE_NUMBER;
+ fcomp = OPAL_COMPARE_RID_FUNCTION_NUMBER;
+ rid_end = pe->rid + 1;
+ }
+
+ /* Clear the reverse map */
+ for (rid = pe->rid; rid < rid_end; rid++)
+ phb->ioda.pe_rmap[rid] = IODA_INVALID_PE;
+
+ /* Release from all parents PELT-V */
+ while (parent) {
+ struct pci_dn *pdn = pci_get_pdn(parent);
+
+ if (pdn && pdn->pe_number != IODA_INVALID_PE) {
+ rc = opal_pci_set_peltv(phb->opal_id,
+ pdn->pe_number, pe->pe_number,
+ OPAL_REMOVE_PE_FROM_DOMAIN);
+ /* XXX What to do in case of error ? */
+ }
+ parent = parent->bus->self;
+ }
+
+ opal_pci_eeh_freeze_set(phb->opal_id, pe->pe_number,
+ OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
+
+ /* Disassociate PE in PELT */
+ rc = opal_pci_set_peltv(phb->opal_id, pe->pe_number,
+ pe->pe_number, OPAL_REMOVE_PE_FROM_DOMAIN);
+ if (rc)
+ pe_warn(pe, "OPAL error %ld remove self from PELTV\n", rc);
+ rc = opal_pci_set_pe(phb->opal_id, pe->pe_number, pe->rid,
+ bcomp, dcomp, fcomp, OPAL_UNMAP_PE);
+ if (rc)
+ pe_err(pe, "OPAL error %ld trying to setup PELT table\n", rc);
+
+ pe->pbus = NULL;
+ pe->pdev = NULL;
+ pe->parent_dev = NULL;
+
+ return 0;
+}
+#endif /* CONFIG_PCI_IOV */
+
static struct pnv_ioda_pe *pnv_ioda_init_pe(struct pnv_phb *phb, int pe_no)
{
struct pnv_ioda_pe *pe = &phb->ioda.pe_array[pe_no];
@@ -599,307 +878,119 @@ static void pnv_ioda_freeze_pe(struct pnv_phb *phb, int
pe_no)
static int pnv_ioda_unfreeze_pe(struct pnv_phb *phb, int pe_no, int opt)
{
struct pnv_ioda_pe *pe, *slave;
- s64 rc;
-
- /* Find master PE */
- pe = &phb->ioda.pe_array[pe_no];
- if (pe->flags & PNV_IODA_PE_SLAVE) {
- pe = pe->master;
- WARN_ON(!pe || !(pe->flags & PNV_IODA_PE_MASTER));
- pe_no = pe->pe_number;
- }
-
- /* Clear frozen state for master PE */
- rc = opal_pci_eeh_freeze_clear(phb->opal_id, pe_no, opt);
- if (rc != OPAL_SUCCESS) {
- pr_warn("%s: Failure %lld clear %d on PHB#%x-PE#%x\n",
- __func__, rc, opt, phb->hose->global_number, pe_no);
- return -EIO;
- }
-
- if (!(pe->flags & PNV_IODA_PE_MASTER))
- return 0;
-
- /* Clear frozen state for slave PEs */
- list_for_each_entry(slave, &pe->slaves, list) {
- rc = opal_pci_eeh_freeze_clear(phb->opal_id,
- slave->pe_number,
- opt);
- if (rc != OPAL_SUCCESS) {
- pr_warn("%s: Failure %lld clear %d on PHB#%x-PE#%x\n",
- __func__, rc, opt, phb->hose->global_number,
- slave->pe_number);
- return -EIO;
- }
- }
-
- return 0;
-}
-
-static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no)
-{
- struct pnv_ioda_pe *slave, *pe;
- u8 fstate, state;
- __be16 pcierr;
- s64 rc;
-
- /* Sanity check on PE number */
- if (pe_no < 0 || pe_no >= phb->ioda.total_pe)
- return OPAL_EEH_STOPPED_PERM_UNAVAIL;
-
- /*
- * Fetch the master PE and the PE instance might be
- * not initialized yet.
- */
- pe = &phb->ioda.pe_array[pe_no];
- if (pe->flags & PNV_IODA_PE_SLAVE) {
- pe = pe->master;
- WARN_ON(!pe || !(pe->flags & PNV_IODA_PE_MASTER));
- pe_no = pe->pe_number;
- }
-
- /* Check the master PE */
- rc = opal_pci_eeh_freeze_status(phb->opal_id, pe_no,
- &state, &pcierr, NULL);
- if (rc != OPAL_SUCCESS) {
- pr_warn("%s: Failure %lld getting "
- "PHB#%x-PE#%x state\n",
- __func__, rc,
- phb->hose->global_number, pe_no);
- return OPAL_EEH_STOPPED_TEMP_UNAVAIL;
- }
-
- /* Check the slave PE */
- if (!(pe->flags & PNV_IODA_PE_MASTER))
- return state;
-
- list_for_each_entry(slave, &pe->slaves, list) {
- rc = opal_pci_eeh_freeze_status(phb->opal_id,
- slave->pe_number,
- &fstate,
- &pcierr,
- NULL);
- if (rc != OPAL_SUCCESS) {
- pr_warn("%s: Failure %lld getting "
- "PHB#%x-PE#%x state\n",
- __func__, rc,
- phb->hose->global_number, slave->pe_number);
- return OPAL_EEH_STOPPED_TEMP_UNAVAIL;
- }
-
- /*
- * Override the result based on the ascending
- * priority.
- */
- if (fstate > state)
- state = fstate;
- }
-
- return state;
-}
-
-/* Currently those 2 are only used when MSIs are enabled, this will change
- * but in the meantime, we need to protect them to avoid warnings
- */
-#ifdef CONFIG_PCI_MSI
-static struct pnv_ioda_pe *pnv_ioda_dev_to_pe(struct pci_dev *dev)
-{
- struct pci_controller *hose = pci_bus_to_host(dev->bus);
- struct pnv_phb *phb = hose->private_data;
- struct pci_dn *pdn = pci_get_pdn(dev);
-
- if (!pdn)
- return NULL;
- if (pdn->pe_number == IODA_INVALID_PE)
- return NULL;
- return &phb->ioda.pe_array[pdn->pe_number];
-}
-#endif /* CONFIG_PCI_MSI */
-
-static int pnv_ioda_set_one_peltv(struct pnv_phb *phb,
- struct pnv_ioda_pe *parent,
- struct pnv_ioda_pe *child,
- bool is_add)
-{
- const char *desc = is_add ? "adding" : "removing";
- uint8_t op = is_add ? OPAL_ADD_PE_TO_DOMAIN :
- OPAL_REMOVE_PE_FROM_DOMAIN;
- struct pnv_ioda_pe *slave;
- long rc;
-
- /* Parent PE affects child PE */
- rc = opal_pci_set_peltv(phb->opal_id, parent->pe_number,
- child->pe_number, op);
- if (rc != OPAL_SUCCESS) {
- pe_warn(child, "OPAL error %ld %s to parent PELTV\n",
- rc, desc);
- return -ENXIO;
- }
-
- if (!(child->flags & PNV_IODA_PE_MASTER))
- return 0;
-
- /* Compound case: parent PE affects slave PEs */
- list_for_each_entry(slave, &child->slaves, list) {
- rc = opal_pci_set_peltv(phb->opal_id, parent->pe_number,
- slave->pe_number, op);
- if (rc != OPAL_SUCCESS) {
- pe_warn(slave, "OPAL error %ld %s to parent PELTV\n",
- rc, desc);
- return -ENXIO;
- }
- }
-
- return 0;
-}
-
-static int pnv_ioda_set_peltv(struct pnv_phb *phb,
- struct pnv_ioda_pe *pe,
- bool is_add)
-{
- struct pnv_ioda_pe *slave;
- struct pci_dev *pdev = NULL;
- int ret;
-
- /*
- * Clear PE frozen state. If it's master PE, we need
- * clear slave PE frozen state as well.
- */
- if (is_add) {
- opal_pci_eeh_freeze_clear(phb->opal_id, pe->pe_number,
- OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
- if (pe->flags & PNV_IODA_PE_MASTER) {
- list_for_each_entry(slave, &pe->slaves, list)
- opal_pci_eeh_freeze_clear(phb->opal_id,
- slave->pe_number,
-
OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
- }
- }
-
- /*
- * Associate PE in PELT. We need add the PE into the
- * corresponding PELT-V as well. Otherwise, the error
- * originated from the PE might contribute to other
- * PEs.
- */
- ret = pnv_ioda_set_one_peltv(phb, pe, pe, is_add);
- if (ret)
- return ret;
+ s64 rc;
- /* For compound PEs, any one affects all of them */
- if (pe->flags & PNV_IODA_PE_MASTER) {
- list_for_each_entry(slave, &pe->slaves, list) {
- ret = pnv_ioda_set_one_peltv(phb, slave, pe, is_add);
- if (ret)
- return ret;
- }
+ /* Find master PE */
+ pe = &phb->ioda.pe_array[pe_no];
+ if (pe->flags & PNV_IODA_PE_SLAVE) {
+ pe = pe->master;
+ WARN_ON(!pe || !(pe->flags & PNV_IODA_PE_MASTER));
+ pe_no = pe->pe_number;
}
- if (pe->flags & (PNV_IODA_PE_BUS_ALL | PNV_IODA_PE_BUS))
- pdev = pe->pbus->self;
- else if (pe->flags & PNV_IODA_PE_DEV)
- pdev = pe->pdev->bus->self;
-#ifdef CONFIG_PCI_IOV
- else if (pe->flags & PNV_IODA_PE_VF)
- pdev = pe->parent_dev->bus->self;
-#endif /* CONFIG_PCI_IOV */
- while (pdev) {
- struct pci_dn *pdn = pci_get_pdn(pdev);
- struct pnv_ioda_pe *parent;
+ /* Clear frozen state for master PE */
+ rc = opal_pci_eeh_freeze_clear(phb->opal_id, pe_no, opt);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("%s: Failure %lld clear %d on PHB#%x-PE#%x\n",
+ __func__, rc, opt, phb->hose->global_number, pe_no);
+ return -EIO;
+ }
- if (pdn && pdn->pe_number != IODA_INVALID_PE) {
- parent = &phb->ioda.pe_array[pdn->pe_number];
- ret = pnv_ioda_set_one_peltv(phb, parent, pe, is_add);
- if (ret)
- return ret;
- }
+ if (!(pe->flags & PNV_IODA_PE_MASTER))
+ return 0;
- pdev = pdev->bus->self;
+ /* Clear frozen state for slave PEs */
+ list_for_each_entry(slave, &pe->slaves, list) {
+ rc = opal_pci_eeh_freeze_clear(phb->opal_id,
+ slave->pe_number,
+ opt);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("%s: Failure %lld clear %d on PHB#%x-PE#%x\n",
+ __func__, rc, opt, phb->hose->global_number,
+ slave->pe_number);
+ return -EIO;
+ }
}
return 0;
}
-#ifdef CONFIG_PCI_IOV
-static int pnv_ioda_deconfigure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe)
+static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no)
{
- struct pci_dev *parent;
- uint8_t bcomp, dcomp, fcomp;
- int64_t rc;
- long rid_end, rid;
+ struct pnv_ioda_pe *slave, *pe;
+ u8 fstate, state;
+ __be16 pcierr;
+ s64 rc;
- /* Currently, we just deconfigure VF PE. Bus PE will always there.*/
- if (pe->pbus) {
- int count;
+ /* Sanity check on PE number */
+ if (pe_no < 0 || pe_no >= phb->ioda.total_pe)
+ return OPAL_EEH_STOPPED_PERM_UNAVAIL;
- dcomp = OPAL_IGNORE_RID_DEVICE_NUMBER;
- fcomp = OPAL_IGNORE_RID_FUNCTION_NUMBER;
- parent = pe->pbus->self;
- if (pe->flags & PNV_IODA_PE_BUS_ALL)
- count = pe->pbus->busn_res.end -
pe->pbus->busn_res.start + 1;
- else
- count = 1;
+ /*
+ * Fetch the master PE and the PE instance might be
+ * not initialized yet.
+ */
+ pe = &phb->ioda.pe_array[pe_no];
+ if (pe->flags & PNV_IODA_PE_SLAVE) {
+ pe = pe->master;
+ WARN_ON(!pe || !(pe->flags & PNV_IODA_PE_MASTER));
+ pe_no = pe->pe_number;
+ }
- switch(count) {
- case 1: bcomp = OpalPciBusAll; break;
- case 2: bcomp = OpalPciBus7Bits; break;
- case 4: bcomp = OpalPciBus6Bits; break;
- case 8: bcomp = OpalPciBus5Bits; break;
- case 16: bcomp = OpalPciBus4Bits; break;
- case 32: bcomp = OpalPciBus3Bits; break;
- default:
- dev_err(&pe->pbus->dev, "Number of subordinate buses %d
unsupported\n",
- count);
- /* Do an exact match only */
- bcomp = OpalPciBusAll;
- }
- rid_end = pe->rid + (count << 8);
- } else {
- if (pe->flags & PNV_IODA_PE_VF)
- parent = pe->parent_dev;
- else
- parent = pe->pdev->bus->self;
- bcomp = OpalPciBusAll;
- dcomp = OPAL_COMPARE_RID_DEVICE_NUMBER;
- fcomp = OPAL_COMPARE_RID_FUNCTION_NUMBER;
- rid_end = pe->rid + 1;
+ /* Check the master PE */
+ rc = opal_pci_eeh_freeze_status(phb->opal_id, pe_no,
+ &state, &pcierr, NULL);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("%s: Error %lld getting PHB#%x-PE#%x state\n",
+ __func__, rc, phb->hose->global_number, pe_no);
+ return OPAL_EEH_STOPPED_TEMP_UNAVAIL;
}
- /* Clear the reverse map */
- for (rid = pe->rid; rid < rid_end; rid++)
- phb->ioda.pe_rmap[rid] = IODA_INVALID_PE;
+ /* Check the slave PE */
+ if (!(pe->flags & PNV_IODA_PE_MASTER))
+ return state;
- /* Release from all parents PELT-V */
- while (parent) {
- struct pci_dn *pdn = pci_get_pdn(parent);
- if (pdn && pdn->pe_number != IODA_INVALID_PE) {
- rc = opal_pci_set_peltv(phb->opal_id, pdn->pe_number,
- pe->pe_number,
OPAL_REMOVE_PE_FROM_DOMAIN);
- /* XXX What to do in case of error ? */
+ list_for_each_entry(slave, &pe->slaves, list) {
+ rc = opal_pci_eeh_freeze_status(phb->opal_id,
+ slave->pe_number,
+ &fstate,
+ &pcierr,
+ NULL);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("%s: Error %lld getting PHB#%x-PE#%x state\n",
+ __func__, rc, phb->hose->global_number,
+ slave->pe_number);
+ return OPAL_EEH_STOPPED_TEMP_UNAVAIL;
}
- parent = parent->bus->self;
- }
- opal_pci_eeh_freeze_set(phb->opal_id, pe->pe_number,
- OPAL_EEH_ACTION_CLEAR_FREEZE_ALL);
+ /*
+ * Override the result based on the ascending
+ * priority.
+ */
+ if (fstate > state)
+ state = fstate;
+ }
- /* Disassociate PE in PELT */
- rc = opal_pci_set_peltv(phb->opal_id, pe->pe_number,
- pe->pe_number, OPAL_REMOVE_PE_FROM_DOMAIN);
- if (rc)
- pe_warn(pe, "OPAL error %ld remove self from PELTV\n", rc);
- rc = opal_pci_set_pe(phb->opal_id, pe->pe_number, pe->rid,
- bcomp, dcomp, fcomp, OPAL_UNMAP_PE);
- if (rc)
- pe_err(pe, "OPAL error %ld trying to setup PELT table\n", rc);
+ return state;
+}
- pe->pbus = NULL;
- pe->pdev = NULL;
- pe->parent_dev = NULL;
+/* Currently those 2 are only used when MSIs are enabled, this will change
+ * but in the meantime, we need to protect them to avoid warnings
+ */
+#ifdef CONFIG_PCI_MSI
+static struct pnv_ioda_pe *pnv_ioda_dev_to_pe(struct pci_dev *dev)
+{
+ struct pci_controller *hose = pci_bus_to_host(dev->bus);
+ struct pnv_phb *phb = hose->private_data;
+ struct pci_dn *pdn = pci_get_pdn(dev);
- return 0;
+ if (!pdn)
+ return NULL;
+ if (pdn->pe_number == IODA_INVALID_PE)
+ return NULL;
+ return &phb->ioda.pe_array[pdn->pe_number];
}
-#endif /* CONFIG_PCI_IOV */
+#endif /* CONFIG_PCI_MSI */
static int pnv_ioda_configure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe)
{
@@ -1349,29 +1440,6 @@ m64_failed:
return -EBUSY;
}
-static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group,
- int num);
-static void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable);
-
-static void pnv_pci_ioda2_release_dma_pe(struct pci_dev *dev, struct
pnv_ioda_pe *pe)
-{
- struct iommu_table *tbl;
- int64_t rc;
-
- tbl = pe->table_group.tables[0];
- rc = pnv_pci_ioda2_unset_window(&pe->table_group, 0);
- if (rc)
- pe_warn(pe, "OPAL error %ld release DMA window\n", rc);
-
- pnv_pci_ioda2_set_bypass(pe, false);
- if (pe->table_group.group) {
- iommu_group_put(pe->table_group.group);
- BUG_ON(pe->table_group.group);
- }
- pnv_pci_ioda2_table_free_pages(tbl);
- iommu_free_table(tbl, of_node_full_name(dev->dev.of_node));
-}
-
static void pnv_ioda_release_vf_PE(struct pci_dev *pdev, u16 num_vfs)
{
struct pci_bus *bus;
@@ -1860,19 +1928,6 @@ static struct iommu_table_ops pnv_ioda1_iommu_ops = {
.get = pnv_tce_get,
};
-static inline void pnv_pci_ioda2_tce_invalidate_entire(struct pnv_ioda_pe *pe)
-{
- /* 01xb - invalidate TCEs that match the specified PE# */
- unsigned long val = (0x4ull << 60) | (pe->pe_number & 0xFF);
- struct pnv_phb *phb = pe->phb;
-
- if (!phb->ioda.tce_inval_reg)
- return;
-
- mb(); /* Ensure above stores are visible */
- __raw_writeq(cpu_to_be64(val), phb->ioda.tce_inval_reg);
-}
-
static void pnv_pci_ioda2_tce_do_invalidate(unsigned pe_number, bool rm,
__be64 __iomem *invalidate, unsigned shift,
unsigned long index, unsigned long npages)
@@ -2108,34 +2163,6 @@ static long pnv_pci_ioda2_set_window(struct
iommu_table_group *table_group,
return 0;
}
-static void pnv_pci_ioda2_set_bypass(struct pnv_ioda_pe *pe, bool enable)
-{
- uint16_t window_id = (pe->pe_number << 1 ) + 1;
- int64_t rc;
-
- pe_info(pe, "%sabling 64-bit DMA bypass\n", enable ? "En" : "Dis");
- if (enable) {
- phys_addr_t top = memblock_end_of_DRAM();
-
- top = roundup_pow_of_two(top);
- rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id,
- pe->pe_number,
- window_id,
- pe->tce_bypass_base,
- top);
- } else {
- rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id,
- pe->pe_number,
- window_id,
- pe->tce_bypass_base,
- 0);
- }
- if (rc)
- pe_err(pe, "OPAL error %lld configuring bypass window\n", rc);
- else
- pe->tce_bypass_enabled = enable;
-}
-
static long pnv_pci_ioda2_table_alloc_pages(int nid, __u64 bus_offset,
__u32 page_shift, __u64 window_size, __u32 levels,
struct iommu_table *tbl);
@@ -2248,30 +2275,6 @@ static unsigned long pnv_pci_ioda2_get_table_size(__u32
page_shift,
return bytes;
}
-static long pnv_pci_ioda2_unset_window(struct iommu_table_group *table_group,
- int num)
-{
- struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,
- table_group);
- struct pnv_phb *phb = pe->phb;
- long ret;
-
- pe_info(pe, "Removing DMA window #%d\n", num);
-
- ret = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number,
- (pe->pe_number << 1) + num,
- 0/* levels */, 0/* table address */,
- 0/* table size */, 0/* page size */);
- if (ret)
- pe_warn(pe, "Unmapping failed, ret = %ld\n", ret);
- else
- pnv_pci_ioda2_tce_invalidate_entire(pe);
-
- pnv_pci_unlink_table_and_group(table_group->tables[num], table_group);
-
- return ret;
-}
-
static void pnv_ioda2_take_ownership(struct iommu_table_group *table_group)
{
struct pnv_ioda_pe *pe = container_of(table_group, struct pnv_ioda_pe,
--
2.1.0
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