Merge branch 'for-kvm' into next
Topic branch for commits that the KVM tree might want to pull
in separately.
Hand merged a few files due to conflicts with the LE stuff
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index a6531d2..c639af7 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -70,6 +70,16 @@
define_pe_printk_level(pe_warn, KERN_WARNING);
define_pe_printk_level(pe_info, KERN_INFO);
+/*
+ * stdcix is only supposed to be used in hypervisor real mode as per
+ * the architecture spec
+ */
+static inline void __raw_rm_writeq(u64 val, volatile void __iomem *paddr)
+{
+ __asm__ __volatile__("stdcix %0,0,%1"
+ : : "r" (val), "r" (paddr) : "memory");
+}
+
static int pnv_ioda_alloc_pe(struct pnv_phb *phb)
{
unsigned long pe;
@@ -454,10 +464,13 @@
}
}
-static void pnv_pci_ioda1_tce_invalidate(struct iommu_table *tbl,
- __be64 *startp, __be64 *endp)
+static void pnv_pci_ioda1_tce_invalidate(struct pnv_ioda_pe *pe,
+ struct iommu_table *tbl,
+ __be64 *startp, __be64 *endp, bool rm)
{
- __be64 __iomem *invalidate = (__be64 __iomem *)tbl->it_index;
+ __be64 __iomem *invalidate = rm ?
+ (__be64 __iomem *)pe->tce_inval_reg_phys :
+ (__be64 __iomem *)tbl->it_index;
unsigned long start, end, inc;
start = __pa(startp);
@@ -484,7 +497,10 @@
mb(); /* Ensure above stores are visible */
while (start <= end) {
- __raw_writeq(cpu_to_be64(start), invalidate);
+ if (rm)
+ __raw_rm_writeq(cpu_to_be64(start), invalidate);
+ else
+ __raw_writeq(cpu_to_be64(start), invalidate);
start += inc;
}
@@ -496,10 +512,12 @@
static void pnv_pci_ioda2_tce_invalidate(struct pnv_ioda_pe *pe,
struct iommu_table *tbl,
- __be64 *startp, __be64 *endp)
+ __be64 *startp, __be64 *endp, bool rm)
{
unsigned long start, end, inc;
- __be64 __iomem *invalidate = (__be64 __iomem *)tbl->it_index;
+ __be64 __iomem *invalidate = rm ?
+ (__be64 __iomem *)pe->tce_inval_reg_phys :
+ (__be64 __iomem *)tbl->it_index;
/* We'll invalidate DMA address in PE scope */
start = 0x2ul << 60;
@@ -515,22 +533,25 @@
mb();
while (start <= end) {
- __raw_writeq(cpu_to_be64(start), invalidate);
+ if (rm)
+ __raw_rm_writeq(cpu_to_be64(start), invalidate);
+ else
+ __raw_writeq(cpu_to_be64(start), invalidate);
start += inc;
}
}
void pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl,
- __be64 *startp, __be64 *endp)
+ __be64 *startp, __be64 *endp, bool rm)
{
struct pnv_ioda_pe *pe = container_of(tbl, struct pnv_ioda_pe,
tce32_table);
struct pnv_phb *phb = pe->phb;
if (phb->type == PNV_PHB_IODA1)
- pnv_pci_ioda1_tce_invalidate(tbl, startp, endp);
+ pnv_pci_ioda1_tce_invalidate(pe, tbl, startp, endp, rm);
else
- pnv_pci_ioda2_tce_invalidate(pe, tbl, startp, endp);
+ pnv_pci_ioda2_tce_invalidate(pe, tbl, startp, endp, rm);
}
static void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb,
@@ -603,7 +624,9 @@
* bus number, print that out instead.
*/
tbl->it_busno = 0;
- tbl->it_index = (unsigned long)ioremap(be64_to_cpup(swinvp), 8);
+ pe->tce_inval_reg_phys = be64_to_cpup(swinvp);
+ tbl->it_index = (unsigned long)ioremap(pe->tce_inval_reg_phys,
+ 8);
tbl->it_type = TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE |
TCE_PCI_SWINV_PAIR;
}
@@ -681,7 +704,9 @@
* bus number, print that out instead.
*/
tbl->it_busno = 0;
- tbl->it_index = (unsigned long)ioremap(be64_to_cpup(swinvp), 8);
+ pe->tce_inval_reg_phys = be64_to_cpup(swinvp);
+ tbl->it_index = (unsigned long)ioremap(pe->tce_inval_reg_phys,
+ 8);
tbl->it_type = TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE;
}
iommu_init_table(tbl, phb->hose->node);