diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2011-04-01 15:15:28 +1100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2011-04-01 18:34:56 +0200 |
| commit | ee86dfeebb5c12372935374b32e796e5d2544c90 (patch) | |
| tree | 2ef808c297444cb706ae5ac243deb3218d98737f /hw/spapr_vio.h | |
| parent | 0201e2da65b1828937c478fa1ac52e58522a32c1 (diff) | |
Implement TCE translation for sPAPR VIO
This patch implements the necessary infrastructure and hypercalls for
sPAPR's TCE (Translation Control Entry) IOMMU mechanism. This is necessary
for all virtual IO devices which do DMA (i.e. nearly all of them).
Signed-off-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/spapr_vio.h')
| -rw-r--r-- | hw/spapr_vio.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h index 20139273d3..9d864c20fe 100644 --- a/hw/spapr_vio.h +++ b/hw/spapr_vio.h @@ -21,12 +21,29 @@ * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ +#define SPAPR_VIO_TCE_PAGE_SHIFT 12 +#define SPAPR_VIO_TCE_PAGE_SIZE (1ULL << SPAPR_VIO_TCE_PAGE_SHIFT) +#define SPAPR_VIO_TCE_PAGE_MASK (SPAPR_VIO_TCE_PAGE_SIZE - 1) + +enum VIOsPAPR_TCEAccess { + SPAPR_TCE_FAULT = 0, + SPAPR_TCE_RO = 1, + SPAPR_TCE_WO = 2, + SPAPR_TCE_RW = 3, +}; + +typedef struct VIOsPAPR_RTCE { + uint64_t tce; +} VIOsPAPR_RTCE; + typedef struct VIOsPAPRDevice { DeviceState qdev; uint32_t reg; qemu_irq qirq; uint32_t vio_irq_num; target_ulong signal_state; + uint32_t rtce_window_size; + VIOsPAPR_RTCE *rtce_table; } VIOsPAPRDevice; typedef struct VIOsPAPRBus { @@ -49,6 +66,21 @@ extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt); extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode); +int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba, + target_ulong len, + enum VIOsPAPR_TCEAccess access); + +int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, + void *buf, uint32_t size); +int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, + const void *buf, uint32_t size); +int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size); +void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val); +void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val); +void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val); +void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val); +uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr); + void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len); void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev, |