obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \
- hvcall.o proc.o htab.o
+ hvcall.o proc.o htab.o iommu.o
--- /dev/null
+/*
+ * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
+ *
+ * Rewrite, cleanup:
+ *
+ * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ *
+ * Dynamic DMA mapping support, iSeries-specific parts.
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/types.h>
+#include <linux/dma-mapping.h>
+#include <linux/list.h>
+
+#include <asm/iommu.h>
+#include <asm/tce.h>
+#include <asm/machdep.h>
+#include <asm/iSeries/HvCallXm.h>
+#include <asm/iSeries/iSeries_pci.h>
+
+extern struct list_head iSeries_Global_Device_List;
+
+
+static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
+ unsigned long uaddr, enum dma_data_direction direction)
+{
+ u64 rc;
+ union tce_entry tce;
+
+ while (npages--) {
+ tce.te_word = 0;
+ tce.te_bits.tb_rpn = virt_to_abs(uaddr) >> PAGE_SHIFT;
+
+ if (tbl->it_type == TCE_VB) {
+ /* Virtual Bus */
+ tce.te_bits.tb_valid = 1;
+ tce.te_bits.tb_allio = 1;
+ if (direction != DMA_TO_DEVICE)
+ tce.te_bits.tb_rdwr = 1;
+ } else {
+ /* PCI Bus */
+ tce.te_bits.tb_rdwr = 1; /* Read allowed */
+ if (direction != DMA_TO_DEVICE)
+ tce.te_bits.tb_pciwr = 1;
+ }
+
+ rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index,
+ tce.te_word);
+ if (rc)
+ panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+ rc);
+ index++;
+ uaddr += PAGE_SIZE;
+ }
+}
+
+static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
+{
+ u64 rc;
+
+ while (npages--) {
+ rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
+ if (rc)
+ panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+ rc);
+ index++;
+ }
+}
+
+#ifdef CONFIG_PCI
+/*
+ * This function compares the known tables to find an iommu_table
+ * that has already been built for hardware TCEs.
+ */
+static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
+{
+ struct iSeries_Device_Node *dp;
+
+ list_for_each_entry(dp, &iSeries_Global_Device_List, Device_List) {
+ if ((dp->iommu_table != NULL) &&
+ (dp->iommu_table->it_type == TCE_PCI) &&
+ (dp->iommu_table->it_offset == tbl->it_offset) &&
+ (dp->iommu_table->it_index == tbl->it_index) &&
+ (dp->iommu_table->it_size == tbl->it_size))
+ return dp->iommu_table;
+ }
+ return NULL;
+}
+
+/*
+ * Call Hv with the architected data structure to get TCE table info.
+ * info. Put the returned data into the Linux representation of the
+ * TCE table data.
+ * The Hardware Tce table comes in three flavors.
+ * 1. TCE table shared between Buses.
+ * 2. TCE table per Bus.
+ * 3. TCE Table per IOA.
+ */
+static void iommu_table_getparms(struct iSeries_Device_Node* dn,
+ struct iommu_table* tbl)
+{
+ struct iommu_table_cb *parms;
+
+ parms = kmalloc(sizeof(*parms), GFP_KERNEL);
+ if (parms == NULL)
+ panic("PCI_DMA: TCE Table Allocation failed.");
+
+ memset(parms, 0, sizeof(*parms));
+
+ parms->itc_busno = ISERIES_BUS(dn);
+ parms->itc_slotno = dn->LogicalSlot;
+ parms->itc_virtbus = 0;
+
+ HvCallXm_getTceTableParms(ISERIES_HV_ADDR(parms));
+
+ if (parms->itc_size == 0)
+ panic("PCI_DMA: parms->size is zero, parms is 0x%p", parms);
+
+ /* itc_size is in pages worth of table, it_size is in # of entries */
+ tbl->it_size = (parms->itc_size * PAGE_SIZE) / sizeof(union tce_entry);
+ tbl->it_busno = parms->itc_busno;
+ tbl->it_offset = parms->itc_offset;
+ tbl->it_index = parms->itc_index;
+ tbl->it_blocksize = 1;
+ tbl->it_type = TCE_PCI;
+
+ kfree(parms);
+}
+
+
+void iommu_devnode_init_iSeries(struct iSeries_Device_Node *dn)
+{
+ struct iommu_table *tbl;
+
+ tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
+
+ iommu_table_getparms(dn, tbl);
+
+ /* Look for existing tce table */
+ dn->iommu_table = iommu_table_find(tbl);
+ if (dn->iommu_table == NULL)
+ dn->iommu_table = iommu_init_table(tbl);
+ else
+ kfree(tbl);
+}
+#endif
+
+static void iommu_dev_setup_iSeries(struct pci_dev *dev) { }
+static void iommu_bus_setup_iSeries(struct pci_bus *bus) { }
+
+void iommu_init_early_iSeries(void)
+{
+ ppc_md.tce_build = tce_build_iSeries;
+ ppc_md.tce_free = tce_free_iSeries;
+
+ ppc_md.iommu_dev_setup = iommu_dev_setup_iSeries;
+ ppc_md.iommu_bus_setup = iommu_bus_setup_iSeries;
+
+ pci_iommu_init();
+}
obj-$(CONFIG_PCI) += pci.o pci_iommu.o iomap.o $(pci-obj-y)
-obj-$(CONFIG_PPC_ISERIES) += iSeries_iommu.o
-
obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o i8259.o prom_init.o
obj-$(CONFIG_PPC_PSERIES) += pSeries_pci.o pSeries_lpar.o pSeries_hvCall.o \
+++ /dev/null
-/*
- * arch/ppc64/kernel/iSeries_iommu.c
- *
- * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
- *
- * Rewrite, cleanup:
- *
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
- *
- * Dynamic DMA mapping support, iSeries-specific parts.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/list.h>
-
-#include <asm/iommu.h>
-#include <asm/tce.h>
-#include <asm/machdep.h>
-#include <asm/iSeries/HvCallXm.h>
-#include <asm/iSeries/iSeries_pci.h>
-
-extern struct list_head iSeries_Global_Device_List;
-
-
-static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
- unsigned long uaddr, enum dma_data_direction direction)
-{
- u64 rc;
- union tce_entry tce;
-
- while (npages--) {
- tce.te_word = 0;
- tce.te_bits.tb_rpn = virt_to_abs(uaddr) >> PAGE_SHIFT;
-
- if (tbl->it_type == TCE_VB) {
- /* Virtual Bus */
- tce.te_bits.tb_valid = 1;
- tce.te_bits.tb_allio = 1;
- if (direction != DMA_TO_DEVICE)
- tce.te_bits.tb_rdwr = 1;
- } else {
- /* PCI Bus */
- tce.te_bits.tb_rdwr = 1; /* Read allowed */
- if (direction != DMA_TO_DEVICE)
- tce.te_bits.tb_pciwr = 1;
- }
-
- rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index,
- tce.te_word);
- if (rc)
- panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
- rc);
- index++;
- uaddr += PAGE_SIZE;
- }
-}
-
-static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
-{
- u64 rc;
-
- while (npages--) {
- rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
- if (rc)
- panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
- rc);
- index++;
- }
-}
-
-#ifdef CONFIG_PCI
-/*
- * This function compares the known tables to find an iommu_table
- * that has already been built for hardware TCEs.
- */
-static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
-{
- struct iSeries_Device_Node *dp;
-
- list_for_each_entry(dp, &iSeries_Global_Device_List, Device_List) {
- if ((dp->iommu_table != NULL) &&
- (dp->iommu_table->it_type == TCE_PCI) &&
- (dp->iommu_table->it_offset == tbl->it_offset) &&
- (dp->iommu_table->it_index == tbl->it_index) &&
- (dp->iommu_table->it_size == tbl->it_size))
- return dp->iommu_table;
- }
- return NULL;
-}
-
-/*
- * Call Hv with the architected data structure to get TCE table info.
- * info. Put the returned data into the Linux representation of the
- * TCE table data.
- * The Hardware Tce table comes in three flavors.
- * 1. TCE table shared between Buses.
- * 2. TCE table per Bus.
- * 3. TCE Table per IOA.
- */
-static void iommu_table_getparms(struct iSeries_Device_Node* dn,
- struct iommu_table* tbl)
-{
- struct iommu_table_cb *parms;
-
- parms = kmalloc(sizeof(*parms), GFP_KERNEL);
- if (parms == NULL)
- panic("PCI_DMA: TCE Table Allocation failed.");
-
- memset(parms, 0, sizeof(*parms));
-
- parms->itc_busno = ISERIES_BUS(dn);
- parms->itc_slotno = dn->LogicalSlot;
- parms->itc_virtbus = 0;
-
- HvCallXm_getTceTableParms(ISERIES_HV_ADDR(parms));
-
- if (parms->itc_size == 0)
- panic("PCI_DMA: parms->size is zero, parms is 0x%p", parms);
-
- /* itc_size is in pages worth of table, it_size is in # of entries */
- tbl->it_size = (parms->itc_size * PAGE_SIZE) / sizeof(union tce_entry);
- tbl->it_busno = parms->itc_busno;
- tbl->it_offset = parms->itc_offset;
- tbl->it_index = parms->itc_index;
- tbl->it_blocksize = 1;
- tbl->it_type = TCE_PCI;
-
- kfree(parms);
-}
-
-
-void iommu_devnode_init_iSeries(struct iSeries_Device_Node *dn)
-{
- struct iommu_table *tbl;
-
- tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
-
- iommu_table_getparms(dn, tbl);
-
- /* Look for existing tce table */
- dn->iommu_table = iommu_table_find(tbl);
- if (dn->iommu_table == NULL)
- dn->iommu_table = iommu_init_table(tbl);
- else
- kfree(tbl);
-}
-#endif
-
-static void iommu_dev_setup_iSeries(struct pci_dev *dev) { }
-static void iommu_bus_setup_iSeries(struct pci_bus *bus) { }
-
-void iommu_init_early_iSeries(void)
-{
- ppc_md.tce_build = tce_build_iSeries;
- ppc_md.tce_free = tce_free_iSeries;
-
- ppc_md.iommu_dev_setup = iommu_dev_setup_iSeries;
- ppc_md.iommu_bus_setup = iommu_bus_setup_iSeries;
-
- pci_iommu_init();
-}
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff