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[Qemu-devel] [PATCH 25/30] spapr: use memory core for iommu support
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 25/30] spapr: use memory core for iommu support |
Date: |
Tue, 21 May 2013 12:57:26 +0200 |
Now we can stop using a "translating" DMAContext, but we do not yet modify
the sPAPRTCETable users to get an AddressSpace; they keep using the table
via a DMAContext.
Acked-by: David Gibson <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/ppc/spapr_iommu.c | 49 +++++++++++++++++++++++++++----------------------
include/hw/ppc/spapr.h | 1 +
2 files changed, 28 insertions(+), 22 deletions(-)
diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c
index f6d74fe..f7b1b18 100644
--- a/hw/ppc/spapr_iommu.c
+++ b/hw/ppc/spapr_iommu.c
@@ -37,12 +37,16 @@ enum sPAPRTCEAccess {
};
struct sPAPRTCETable {
+ /* temporary until everyone has its own AddressSpace */
DMAContext dma;
+ AddressSpace as;
+
uint32_t liobn;
uint32_t window_size;
sPAPRTCE *table;
bool bypass;
int fd;
+ MemoryRegion iommu;
QLIST_ENTRY(sPAPRTCETable) list;
};
@@ -68,8 +72,9 @@ static sPAPRTCETable *spapr_tce_find_by_liobn(uint32_t liobn)
return NULL;
}
-static IOMMUTLBEntry spapr_tce_translate_iommu(sPAPRTCETable *tcet, hwaddr
addr)
+static IOMMUTLBEntry spapr_tce_translate_iommu(MemoryRegion *iommu, hwaddr
addr)
{
+ sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
uint64_t tce;
#ifdef DEBUG_TCE
@@ -109,25 +114,9 @@ static IOMMUTLBEntry
spapr_tce_translate_iommu(sPAPRTCETable *tcet, hwaddr addr)
};
}
-static int spapr_tce_translate(DMAContext *dma,
- dma_addr_t addr,
- hwaddr *paddr,
- hwaddr *len,
- DMADirection dir)
- {
- sPAPRTCETable *tcet = DO_UPCAST(sPAPRTCETable, dma, dma);
- bool is_write = (dir == DMA_DIRECTION_FROM_DEVICE);
- IOMMUTLBEntry entry = spapr_tce_translate_iommu(tcet, addr);
-
- if (!(entry.perm & (1 << is_write))) {
- return -EPERM;
- }
-
- /* Translate */
- *paddr = entry.translated_addr | (addr & entry.addr_mask);
- *len = (addr | entry.addr_mask) - addr + 1;
- return 0;
-}
+static MemoryRegionIOMMUOps spapr_iommu_ops = {
+ .translate = spapr_tce_translate_iommu,
+};
sPAPRTCETable *spapr_tce_new_table(uint32_t liobn, size_t window_size)
{
@@ -144,8 +133,6 @@ sPAPRTCETable *spapr_tce_new_table(uint32_t liobn, size_t
window_size)
}
tcet = g_malloc0(sizeof(*tcet));
- dma_context_init(&tcet->dma, &address_space_memory, spapr_tce_translate,
NULL, NULL);
-
tcet->liobn = liobn;
tcet->window_size = window_size;
@@ -166,6 +153,12 @@ sPAPRTCETable *spapr_tce_new_table(uint32_t liobn, size_t
window_size)
"table @ %p, fd=%d\n", tcet, liobn, tcet->table, tcet->fd);
#endif
+ memory_region_init_iommu(&tcet->iommu, &spapr_iommu_ops,
+ &address_space_memory,
+ "iommu-spapr", INT64_MAX);
+ address_space_init(&tcet->as, &tcet->iommu);
+ dma_context_init(&tcet->dma, &tcet->as, NULL, NULL, NULL);
+
QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list);
return tcet;
@@ -189,6 +182,11 @@ DMAContext *spapr_tce_get_dma(sPAPRTCETable *tcet)
return &tcet->dma;
}
+MemoryRegion *spapr_tce_get_iommu(sPAPRTCETable *tcet)
+{
+ return &tcet->iommu;
+}
+
void spapr_tce_set_bypass(sPAPRTCETable *tcet, bool bypass)
{
tcet->bypass = bypass;
@@ -207,6 +205,7 @@ static target_ulong put_tce_emu(sPAPRTCETable *tcet,
target_ulong ioba,
target_ulong tce)
{
sPAPRTCE *tcep;
+ IOMMUTLBEntry entry;
if (ioba >= tcet->window_size) {
hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x"
@@ -217,6 +216,12 @@ static target_ulong put_tce_emu(sPAPRTCETable *tcet,
target_ulong ioba,
tcep = tcet->table + (ioba >> SPAPR_TCE_PAGE_SHIFT);
tcep->tce = tce;
+ entry.iova = ioba & ~SPAPR_TCE_PAGE_MASK;
+ entry.translated_addr = tce & ~SPAPR_TCE_PAGE_MASK;
+ entry.addr_mask = SPAPR_TCE_PAGE_MASK;
+ entry.perm = tce;
+ memory_region_notify_iommu(&tcet->iommu, entry);
+
return H_SUCCESS;
}
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index e8d617b..142abb7 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -349,6 +349,7 @@ void spapr_events_init(sPAPREnvironment *spapr);
void spapr_events_fdt_skel(void *fdt, uint32_t epow_irq);
sPAPRTCETable *spapr_tce_new_table(uint32_t liobn, size_t window_size);
DMAContext *spapr_tce_get_dma(sPAPRTCETable *tcet);
+MemoryRegion *spapr_tce_get_iommu(sPAPRTCETable *tcet);
void spapr_tce_free(sPAPRTCETable *tcet);
void spapr_tce_reset(sPAPRTCETable *tcet);
void spapr_tce_set_bypass(sPAPRTCETable *tcet, bool bypass);
--
1.8.1.4
- [Qemu-devel] [PATCH 19/30] memory: Introduce address_space_lookup_region, (continued)
- [Qemu-devel] [PATCH 19/30] memory: Introduce address_space_lookup_region, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 20/30] memory: iommu support, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 21/30] memory: Add iommu map/unmap notifiers, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 22/30] vfio: abort if an emulated iommu is used, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 23/30] spapr: convert TCE API to use an opaque type, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 24/30] spapr: make IOMMU translation go through IOMMUTLBEntry, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 25/30] spapr: use memory core for iommu support,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 26/30] dma: eliminate old-style IOMMU support, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 27/30] pci: use memory core for iommu support, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 28/30] spapr_vio: take care of creating our own AddressSpace/DMAContext, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 30/30] memory: give name to every AddressSpace, Paolo Bonzini, 2013/05/21
- [Qemu-devel] [PATCH 29/30] dma: eliminate DMAContext, Paolo Bonzini, 2013/05/21