Merge branch 'ppc-for-upstream' of git://github.com/agraf/qemu

* 'ppc-for-upstream' of git://github.com/agraf/qemu: (66 commits)
  pseries: Add compatible property to root of device tree
  target-ppc: Move CPU aliases out of translate_init.c
  target-ppc: Report CPU aliases for QMP
  target-ppc: List alias names alongside CPU models
  target-ppc: Make host CPU a subclass of the host's CPU model
  PPC: xnu kernel expects FLUSH to be cleared on STOP
  PPC: Fix dma interrupt
  target-ppc: Fix PPC_DUMP_SPR_ACCESS build
  target-ppc: Synchronize FPU state with KVM
  target-ppc: Add mechanism for synchronizing SPRs with KVM
  Save memory allocation in the elf loader
  pseries: Implement h_read hcall
  target-ppc: Change "POWER7" CPU alias
  target-ppc: Fix remaining microcontroller typos among models
  target-ppc: Split model definitions out of translate_init.c
  target-ppc: Update Coding Style for CPU models
  target-ppc: Turn descriptive CPU model comments into device descriptions
  target-ppc: Turn descriptive CPU family comments into device descriptions
  target-ppc: Set remaining fields on CPU family classes
  target-ppc: Register all types for TARGET_PPCEMB
  ...

hw/elf_ops.h

@@ -197,7 +197,7 @@ static int glue(load_elf, SZ)(const char *name, int fd,
     struct elfhdr ehdr;
     struct elf_phdr *phdr = NULL, *ph;
     int size, i, total_size;
-    elf_word mem_size;
+    elf_word mem_size, file_size;
     uint64_t addr, low = (uint64_t)-1, high = 0;
     uint8_t *data = NULL;
     char label[128];
@@ -252,14 +252,16 @@ static int glue(load_elf, SZ)(const char *name, int fd,
     for(i = 0; i < ehdr.e_phnum; i++) {
         ph = &phdr[i];
         if (ph->p_type == PT_LOAD) {
-            mem_size = ph->p_memsz;
-            /* XXX: avoid allocating */
-            data = g_malloc0(mem_size);
+            mem_size = ph->p_memsz; /* Size of the ROM */
+            file_size = ph->p_filesz; /* Size of the allocated data */
+            data = g_malloc0(file_size);
             if (ph->p_filesz > 0) {
-                if (lseek(fd, ph->p_offset, SEEK_SET) < 0)
+                if (lseek(fd, ph->p_offset, SEEK_SET) < 0) {
                     goto fail;
-                if (read(fd, data, ph->p_filesz) != ph->p_filesz)
+                }
+                if (read(fd, data, file_size) != file_size) {
                     goto fail;
+                }
             }
             /* address_offset is hack for kernel images that are
                linked at the wrong physical address.  */
@@ -281,15 +283,16 @@ static int glue(load_elf, SZ)(const char *name, int fd,
             }
 
             snprintf(label, sizeof(label), "phdr #%d: %s", i, name);
-            rom_add_blob_fixed(label, data, mem_size, addr);
+
+            /* rom_add_elf_program() seize the ownership of 'data' */
+            rom_add_elf_program(label, data, file_size, mem_size, addr);
 
             total_size += mem_size;
             if (addr < low)
                 low = addr;
             if ((addr + mem_size) > high)
                 high = addr + mem_size;
 
-            g_free(data);
             data = NULL;
         }
     }

hw/loader.c

@@ -533,7 +533,14 @@ typedef struct Rom Rom;
 struct Rom {
     char *name;
     char *path;
+
+    /* datasize is the amount of memory allocated in "data". If datasize is less
+     * than romsize, it means that the area from datasize to romsize is filled
+     * with zeros.
+     */
     size_t romsize;
+    size_t datasize;
+
     uint8_t *data;
     int isrom;
     char *fw_dir;
@@ -589,14 +596,15 @@ int rom_add_file(const char *file, const char *fw_dir,
         rom->fw_dir  = g_strdup(fw_dir);
         rom->fw_file = g_strdup(file);
     }
-    rom->addr    = addr;
-    rom->romsize = lseek(fd, 0, SEEK_END);
-    rom->data    = g_malloc0(rom->romsize);
+    rom->addr     = addr;
+    rom->romsize  = lseek(fd, 0, SEEK_END);
+    rom->datasize = rom->romsize;
+    rom->data     = g_malloc0(rom->datasize);
     lseek(fd, 0, SEEK_SET);
-    rc = read(fd, rom->data, rom->romsize);
-    if (rc != rom->romsize) {
+    rc = read(fd, rom->data, rom->datasize);
+    if (rc != rom->datasize) {
         fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
-                rom->name, rc, rom->romsize);
+                rom->name, rc, rom->datasize);
         goto err;
     }
     close(fd);
@@ -637,16 +645,37 @@ int rom_add_blob(const char *name, const void *blob, size_t len,
 {
     Rom *rom;
 
-    rom = g_malloc0(sizeof(*rom));
-    rom->name    = g_strdup(name);
-    rom->addr    = addr;
-    rom->romsize = len;
-    rom->data    = g_malloc0(rom->romsize);
+    rom           = g_malloc0(sizeof(*rom));
+    rom->name     = g_strdup(name);
+    rom->addr     = addr;
+    rom->romsize  = len;
+    rom->datasize = len;
+    rom->data     = g_malloc0(rom->datasize);
     memcpy(rom->data, blob, len);
     rom_insert(rom);
     return 0;
 }
 
+/* This function is specific for elf program because we don't need to allocate
+ * all the rom. We just allocate the first part and the rest is just zeros. This
+ * is why romsize and datasize are different. Also, this function seize the
+ * memory ownership of "data", so we don't have to allocate and copy the buffer.
+ */
+int rom_add_elf_program(const char *name, void *data, size_t datasize,
+                        size_t romsize, hwaddr addr)
+{
+    Rom *rom;
+
+    rom           = g_malloc0(sizeof(*rom));
+    rom->name     = g_strdup(name);
+    rom->addr     = addr;
+    rom->datasize = datasize;
+    rom->romsize  = romsize;
+    rom->data     = data;
+    rom_insert(rom);
+    return 0;
+}
+
 int rom_add_vga(const char *file)
 {
     return rom_add_file(file, "vgaroms", 0, -1);
@@ -668,7 +697,7 @@ static void rom_reset(void *unused)
         if (rom->data == NULL) {
             continue;
         }
-        cpu_physical_memory_write_rom(rom->addr, rom->data, rom->romsize);
+        cpu_physical_memory_write_rom(rom->addr, rom->data, rom->datasize);
         if (rom->isrom) {
             /* rom needs to be written only once */
             g_free(rom->data);
@@ -756,13 +785,33 @@ int rom_copy(uint8_t *dest, hwaddr addr, size_t size)
 
         d = dest + (rom->addr - addr);
         s = rom->data;
-        l = rom->romsize;
+        l = rom->datasize;
 
         if ((d + l) > (dest + size)) {
             l = dest - d;
         }
 
         memcpy(d, s, l);
+
+        if (rom->romsize > rom->datasize) {
+            /* If datasize is less than romsize, it means that we didn't
+             * allocate all the ROM because the trailing data are only zeros.
+             */
+
+            d += l;
+            l = rom->romsize - rom->datasize;
+
+            if ((d + l) > (dest + size)) {
+                /* Rom size doesn't fit in the destination area. Adjust to avoid
+                 * overflow.
+                 */
+                l = dest - d;
+            }
+
+            if (l > 0) {
+                memset(d, 0x0, l);
+            }
+        }
     }
 
     return (d + l) - dest;

hw/loader.h

@@ -27,6 +27,8 @@ int rom_add_file(const char *file, const char *fw_dir,
                  hwaddr addr, int32_t bootindex);
 int rom_add_blob(const char *name, const void *blob, size_t len,
                  hwaddr addr);
+int rom_add_elf_program(const char *name, void *data, size_t datasize,
+                        size_t romsize, hwaddr addr);
 int rom_load_all(void);
 void rom_set_fw(void *f);
 int rom_copy(uint8_t *dest, hwaddr addr, size_t size);

hw/mac_dbdma.c

@@ -688,6 +688,10 @@ dbdma_control_write(DBDMA_channel *ch)
     if ((ch->regs[DBDMA_STATUS] & RUN) && !(status & RUN)) {
         /* RUN is cleared */
         status &= ~(ACTIVE|DEAD);
+        if ((status & FLUSH) && ch->flush) {
+            ch->flush(&ch->io);
+            status &= ~FLUSH;
+        }
     }
 
     DBDMA_DPRINTF("    status 0x%08x\n", status);

hw/ppc/mac_newworld.c

@@ -370,7 +370,7 @@ static void ppc_core99_init(QEMUMachineInitArgs *args)
     qdev_connect_gpio_out(dev, 1, pic[0x0d]); /* IDE */
     qdev_connect_gpio_out(dev, 2, pic[0x02]); /* IDE DMA */
     qdev_connect_gpio_out(dev, 3, pic[0x0e]); /* IDE */
-    qdev_connect_gpio_out(dev, 4, pic[0x02]); /* IDE DMA */
+    qdev_connect_gpio_out(dev, 4, pic[0x03]); /* IDE DMA */
     macio_init(macio, pic_mem, escc_bar);
 
     /* We only emulate 2 out of 3 IDE controllers for now */

hw/spapr.c

@@ -260,6 +260,7 @@ static void *spapr_create_fdt_skel(const char *cpu_model,
     _FDT((fdt_begin_node(fdt, "")));
     _FDT((fdt_property_string(fdt, "device_type", "chrp")));
     _FDT((fdt_property_string(fdt, "model", "IBM pSeries (emulated by qemu)")));
+    _FDT((fdt_property_string(fdt, "compatible", "qemu,pseries")));
 
     _FDT((fdt_property_cell(fdt, "#address-cells", 0x2)));
     _FDT((fdt_property_cell(fdt, "#size-cells", 0x2)));

hw/spapr_hcall.c

@@ -323,6 +323,36 @@ static target_ulong h_protect(PowerPCCPU *cpu, sPAPREnvironment *spapr,
     return H_SUCCESS;
 }
 
+static target_ulong h_read(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+                           target_ulong opcode, target_ulong *args)
+{
+    CPUPPCState *env = &cpu->env;
+    target_ulong flags = args[0];
+    target_ulong pte_index = args[1];
+    uint8_t *hpte;
+    int i, ridx, n_entries = 1;
+
+    if ((pte_index * HASH_PTE_SIZE_64) & ~env->htab_mask) {
+        return H_PARAMETER;
+    }
+
+    if (flags & H_READ_4) {
+        /* Clear the two low order bits */
+        pte_index &= ~(3ULL);
+        n_entries = 4;
+    }
+
+    hpte = env->external_htab + (pte_index * HASH_PTE_SIZE_64);
+
+    for (i = 0, ridx = 0; i < n_entries; i++) {
+        args[ridx++] = ldq_p(hpte);
+        args[ridx++] = ldq_p(hpte + (HASH_PTE_SIZE_64/2));
+        hpte += HASH_PTE_SIZE_64;
+    }
+
+    return H_SUCCESS;
+}
+
 static target_ulong h_set_dabr(PowerPCCPU *cpu, sPAPREnvironment *spapr,
                                target_ulong opcode, target_ulong *args)
 {
@@ -710,6 +740,7 @@ static void hypercall_register_types(void)
     spapr_register_hypercall(H_ENTER, h_enter);
     spapr_register_hypercall(H_REMOVE, h_remove);
     spapr_register_hypercall(H_PROTECT, h_protect);
+    spapr_register_hypercall(H_READ, h_read);
 
     /* hcall-bulk */
     spapr_register_hypercall(H_BULK_REMOVE, h_bulk_remove);

hw/spapr_llan.c

@@ -175,11 +175,19 @@ static ssize_t spapr_vlan_receive(NetClientState *nc, const uint8_t *buf,
     return size;
 }
 
+static void spapr_vlan_cleanup(NetClientState *nc)
+{
+    VIOsPAPRVLANDevice *dev = qemu_get_nic_opaque(nc);
+
+    dev->nic = NULL;
+}
+
 static NetClientInfo net_spapr_vlan_info = {
     .type = NET_CLIENT_OPTIONS_KIND_NIC,
     .size = sizeof(NICState),
     .can_receive = spapr_vlan_can_receive,
     .receive = spapr_vlan_receive,
+    .cleanup = spapr_vlan_cleanup,
 };
 
 static void spapr_vlan_reset(VIOsPAPRDevice *sdev)

target-ppc/Makefile.objs

@@ -1,3 +1,4 @@
+obj-y += cpu-models.o
 obj-y += translate.o
 obj-$(CONFIG_SOFTMMU) += machine.o
 obj-$(CONFIG_KVM) += kvm.o kvm_ppc.o