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Diffstat (limited to 'hw/spapr_vio.c')
-rw-r--r--hw/spapr_vio.c281
1 files changed, 20 insertions, 261 deletions
diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c
index c8271c626c..05b55032a9 100644
--- a/hw/spapr_vio.c
+++ b/hw/spapr_vio.c
@@ -39,7 +39,6 @@
 #endif /* CONFIG_FDT */
 
 /* #define DEBUG_SPAPR */
-/* #define DEBUG_TCE */
 
 #ifdef DEBUG_SPAPR
 #define dprintf(fmt, ...) \
@@ -143,26 +142,9 @@ static int vio_make_devnode(VIOsPAPRDevice *dev,
         }
     }
 
-    if (dev->rtce_window_size) {
-        uint32_t dma_prop[] = {cpu_to_be32(dev->reg),
-                               0, 0,
-                               0, cpu_to_be32(dev->rtce_window_size)};
-
-        ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
-        if (ret < 0) {
-            return ret;
-        }
-
-        ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
-        if (ret < 0) {
-            return ret;
-        }
-
-        ret = fdt_setprop(fdt, node_off, "ibm,my-dma-window", dma_prop,
-                          sizeof(dma_prop));
-        if (ret < 0) {
-            return ret;
-        }
+    ret = spapr_dma_dt(fdt, node_off, "ibm,my-dma-window", dev->dma);
+    if (ret < 0) {
+        return ret;
     }
 
     if (pc->devnode) {
@@ -177,232 +159,6 @@ static int vio_make_devnode(VIOsPAPRDevice *dev,
 #endif /* CONFIG_FDT */
 
 /*
- * RTCE handling
- */
-
-static void rtce_init(VIOsPAPRDevice *dev)
-{
-    size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT)
-        * sizeof(VIOsPAPR_RTCE);
-
-    if (size) {
-        dev->rtce_table = kvmppc_create_spapr_tce(dev->reg,
-                                                  dev->rtce_window_size,
-                                                  &dev->kvmtce_fd);
-
-        if (!dev->rtce_table) {
-            dev->rtce_table = g_malloc0(size);
-        }
-    }
-}
-
-static target_ulong h_put_tce(CPUPPCState *env, sPAPREnvironment *spapr,
-                              target_ulong opcode, target_ulong *args)
-{
-    target_ulong liobn = args[0];
-    target_ulong ioba = args[1];
-    target_ulong tce = args[2];
-    VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, liobn);
-    VIOsPAPR_RTCE *rtce;
-
-    if (!dev) {
-        hcall_dprintf("LIOBN 0x" TARGET_FMT_lx " does not exist\n", liobn);
-        return H_PARAMETER;
-    }
-
-    ioba &= ~(SPAPR_VIO_TCE_PAGE_SIZE - 1);
-
-#ifdef DEBUG_TCE
-    fprintf(stderr, "spapr_vio_put_tce on %s  ioba 0x" TARGET_FMT_lx
-            "  TCE 0x" TARGET_FMT_lx "\n", dev->qdev.id, ioba, tce);
-#endif
-
-    if (ioba >= dev->rtce_window_size) {
-        hcall_dprintf("Out-of-bounds IOBA 0x" TARGET_FMT_lx "\n", ioba);
-        return H_PARAMETER;
-    }
-
-    rtce = dev->rtce_table + (ioba >> SPAPR_VIO_TCE_PAGE_SHIFT);
-    rtce->tce = tce;
-
-    return H_SUCCESS;
-}
-
-int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
-                         target_ulong len, enum VIOsPAPR_TCEAccess access)
-{
-    int start, end, i;
-
-    start = ioba >> SPAPR_VIO_TCE_PAGE_SHIFT;
-    end = (ioba + len - 1) >> SPAPR_VIO_TCE_PAGE_SHIFT;
-
-    for (i = start; i <= end; i++) {
-        if ((dev->rtce_table[i].tce & access) != access) {
-#ifdef DEBUG_TCE
-            fprintf(stderr, "FAIL on %d\n", i);
-#endif
-            return -1;
-        }
-    }
-
-    return 0;
-}
-
-int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, const void *buf,
-                        uint32_t size)
-{
-#ifdef DEBUG_TCE
-    fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
-            (unsigned long long)taddr, size);
-#endif
-
-    /* Check for bypass */
-    if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
-        cpu_physical_memory_write(taddr, buf, size);
-        return 0;
-    }
-
-    while (size) {
-        uint64_t tce;
-        uint32_t lsize;
-        uint64_t txaddr;
-
-        /* Check if we are in bound */
-        if (taddr >= dev->rtce_window_size) {
-#ifdef DEBUG_TCE
-            fprintf(stderr, "spapr_tce_dma_write out of bounds\n");
-#endif
-            return H_DEST_PARM;
-        }
-        tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce;
-
-        /* How much til end of page ? */
-        lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
-
-        /* Check TCE */
-        if (!(tce & 2)) {
-            return H_DEST_PARM;
-        }
-
-        /* Translate */
-        txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) |
-            (taddr & SPAPR_VIO_TCE_PAGE_MASK);
-
-#ifdef DEBUG_TCE
-        fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
-                (unsigned long long)txaddr, lsize);
-#endif
-
-        /* Do it */
-        cpu_physical_memory_write(txaddr, buf, lsize);
-        buf += lsize;
-        taddr += lsize;
-        size -= lsize;
-    }
-    return 0;
-}
-
-int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size)
-{
-    /* FIXME: allocating a temp buffer is nasty, but just stepping
-     * through writing zeroes is awkward.  This will do for now. */
-    uint8_t zeroes[size];
-
-#ifdef DEBUG_TCE
-    fprintf(stderr, "spapr_tce_dma_zero taddr=0x%llx size=0x%x\n",
-            (unsigned long long)taddr, size);
-#endif
-
-    memset(zeroes, 0, size);
-    return spapr_tce_dma_write(dev, taddr, zeroes, size);
-}
-
-void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val)
-{
-    spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
-}
-
-void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val)
-{
-    val = tswap16(val);
-    spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
-}
-
-
-void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val)
-{
-    val = tswap32(val);
-    spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
-}
-
-void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val)
-{
-    val = tswap64(val);
-    spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
-}
-
-int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, void *buf,
-                       uint32_t size)
-{
-#ifdef DEBUG_TCE
-    fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
-            (unsigned long long)taddr, size);
-#endif
-
-    /* Check for bypass */
-    if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
-        cpu_physical_memory_read(taddr, buf, size);
-        return 0;
-    }
-
-    while (size) {
-        uint64_t tce;
-        uint32_t lsize;
-        uint64_t txaddr;
-
-        /* Check if we are in bound */
-        if (taddr >= dev->rtce_window_size) {
-#ifdef DEBUG_TCE
-            fprintf(stderr, "spapr_tce_dma_read out of bounds\n");
-#endif
-            return H_DEST_PARM;
-        }
-        tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce;
-
-        /* How much til end of page ? */
-        lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
-
-        /* Check TCE */
-        if (!(tce & 1)) {
-            return H_DEST_PARM;
-        }
-
-        /* Translate */
-        txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) |
-            (taddr & SPAPR_VIO_TCE_PAGE_MASK);
-
-#ifdef DEBUG_TCE
-        fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
-                (unsigned long long)txaddr, lsize);
-#endif
-        /* Do it */
-        cpu_physical_memory_read(txaddr, buf, lsize);
-        buf += lsize;
-        taddr += lsize;
-        size -= lsize;
-    }
-    return H_SUCCESS;
-}
-
-uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr)
-{
-    uint64_t val;
-
-    spapr_tce_dma_read(dev, taddr, &val, sizeof(val));
-    return tswap64(val);
-}
-
-/*
  * CRQ handling
  */
 static target_ulong h_reg_crq(CPUPPCState *env, sPAPREnvironment *spapr,
@@ -526,7 +282,7 @@ int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
     }
 
     /* Maybe do a fast path for KVM just writing to the pages */
-    rc = spapr_tce_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1);
+    rc = spapr_vio_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1);
     if (rc) {
         return rc;
     }
@@ -534,7 +290,7 @@ int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
         return 1;
     }
 
-    rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8,
+    rc = spapr_vio_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8,
                              &crq[8], 8);
     if (rc) {
         return rc;
@@ -542,7 +298,7 @@ int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
 
     kvmppc_eieio();
 
-    rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8);
+    rc = spapr_vio_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8);
     if (rc) {
         return rc;
     }
@@ -560,13 +316,13 @@ int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
 
 static void spapr_vio_quiesce_one(VIOsPAPRDevice *dev)
 {
-    dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS;
+    VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
+    uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
 
-    if (dev->rtce_table) {
-        size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT)
-            * sizeof(VIOsPAPR_RTCE);
-        memset(dev->rtce_table, 0, size);
+    if (dev->dma) {
+        spapr_tce_free(dev->dma);
     }
+    dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
 
     dev->crq.qladdr = 0;
     dev->crq.qsize = 0;
@@ -593,9 +349,13 @@ static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token,
         return;
     }
     if (enable) {
-        dev->flags |= VIO_PAPR_FLAG_DMA_BYPASS;
+        spapr_tce_free(dev->dma);
+        dev->dma = NULL;
     } else {
-        dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS;
+        VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
+        uint32_t liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
+
+        dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
     }
 
     rtas_st(rets, 0, 0);
@@ -662,6 +422,7 @@ static int spapr_vio_busdev_init(DeviceState *qdev)
 {
     VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev;
     VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev);
+    uint32_t liobn;
     char *id;
 
     if (dev->reg != -1) {
@@ -703,7 +464,8 @@ static int spapr_vio_busdev_init(DeviceState *qdev)
         return -1;
     }
 
-    rtce_init(dev);
+    liobn = SPAPR_VIO_BASE_LIOBN | dev->reg;
+    dev->dma = spapr_tce_new_dma_context(liobn, pc->rtce_window_size);
 
     return pc->init(dev);
 }
@@ -751,9 +513,6 @@ VIOsPAPRBus *spapr_vio_bus_init(void)
     /* hcall-vio */
     spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal);
 
-    /* hcall-tce */
-    spapr_register_hypercall(H_PUT_TCE, h_put_tce);
-
     /* hcall-crq */
     spapr_register_hypercall(H_REG_CRQ, h_reg_crq);
     spapr_register_hypercall(H_FREE_CRQ, h_free_crq);