Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.12-20171215' into staging

ppc patch queue 2017-12-15

First pull request for qemu-2.12.  This has quite a bit of stuff
accumulated while 2.11 was finalizing.  Highlights are:

  * Some preliminary work towards implementing the "XIVE" POWER9
    interrupt controller
  * Some fixes for problems during reboot with MTTCG
  * A substantial TCG performance improvement via
    tcg_get_lookup_and_goto_ptr
  * Numerous assorted cleanups and bugfixes that weren't urgent enough
    for 2.11

# gpg: Signature made Fri 15 Dec 2017 03:14:12 GMT
# gpg:                using RSA key 0x6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.12-20171215: (24 commits)
  spapr: don't initialize PATB entry if max-cpu-compat < power9
  spapr: Assume msi_nonbroken
  spapr: Rename machine init functions for clarity
  target/ppc: introduce the PPC_BIT() macro
  spapr_events: drop bogus cell from "interrupt-ranges" property
  spapr: fix LSI interrupt specifiers in the device tree
  spapr: replace numa_get_node() with lookup in pc-dimm list
  spapr: introduce a spapr_qirq() helper
  spapr: introduce a spapr_irq_set_lsi() helper
  spapr: move the IRQ allocation routines under the machine
  ppc/xics: assign of the CPU 'intc' pointer under the core
  ppc/xics: introduce an icp_create() helper
  spapr/rtas: do not reset the MSR in stop-self command
  spapr/rtas: fix reboot of a a SMP TCG guest
  spapr/rtas: disable the decrementer interrupt when a CPU is unplugged
  e500: fix pci host bridge class/type
  openpic: debug w/ info_report()
  pcc: define the Power-saving mode Exit Cause Enable bits in PowerPCCPUClass
  nvram: add AT24Cx i2c eeprom
  e500: name openpic and pci host bridge
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/hw/nvram/eeprom_at24c.c b/hw/nvram/eeprom_at24c.c
new file mode 100644
index 0000000000..efa3621ac6
--- /dev/null
+++ b/hw/nvram/eeprom_at24c.c
@@ -0,0 +1,205 @@
+/*
+ * *AT24C* series I2C EEPROM
+ *
+ * Copyright (c) 2015 Michael Davidsaver
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the LICENSE file in the top-level directory.
+ */
+
+#include <string.h>
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/hw.h"
+#include "hw/i2c/i2c.h"
+#include "sysemu/block-backend.h"
+
+/* #define DEBUG_AT24C */
+
+#ifdef DEBUG_AT24C
+#define DPRINTK(FMT, ...) printf(TYPE_AT24C_EE " : " FMT, ## __VA_ARGS__)
+#else
+#define DPRINTK(FMT, ...) do {} while (0)
+#endif
+
+#define ERR(FMT, ...) fprintf(stderr, TYPE_AT24C_EE " : " FMT, \
+                            ## __VA_ARGS__)
+
+#define TYPE_AT24C_EE "at24c-eeprom"
+#define AT24C_EE(obj) OBJECT_CHECK(EEPROMState, (obj), TYPE_AT24C_EE)
+
+typedef struct EEPROMState {
+    I2CSlave parent_obj;
+
+    /* address counter */
+    uint16_t cur;
+    /* total size in bytes */
+    uint32_t rsize;
+    bool writable;
+    /* cells changed since last START? */
+    bool changed;
+    /* during WRITE, # of address bytes transfered */
+    uint8_t haveaddr;
+
+    uint8_t *mem;
+
+    BlockBackend *blk;
+} EEPROMState;
+
+static
+int at24c_eeprom_event(I2CSlave *s, enum i2c_event event)
+{
+    EEPROMState *ee = container_of(s, EEPROMState, parent_obj);
+
+    switch (event) {
+    case I2C_START_SEND:
+    case I2C_START_RECV:
+    case I2C_FINISH:
+        ee->haveaddr = 0;
+        DPRINTK("clear\n");
+        if (ee->blk && ee->changed) {
+            int len = blk_pwrite(ee->blk, 0, ee->mem, ee->rsize, 0);
+            if (len != ee->rsize) {
+                ERR(TYPE_AT24C_EE
+                        " : failed to write backing file\n");
+            }
+            DPRINTK("Wrote to backing file\n");
+        }
+        ee->changed = false;
+        break;
+    case I2C_NACK:
+        break;
+    }
+    return 0;
+}
+
+static
+int at24c_eeprom_recv(I2CSlave *s)
+{
+    EEPROMState *ee = AT24C_EE(s);
+    int ret;
+
+    ret = ee->mem[ee->cur];
+
+    ee->cur = (ee->cur + 1u) % ee->rsize;
+    DPRINTK("Recv %02x %c\n", ret, ret);
+
+    return ret;
+}
+
+static
+int at24c_eeprom_send(I2CSlave *s, uint8_t data)
+{
+    EEPROMState *ee = AT24C_EE(s);
+
+    if (ee->haveaddr < 2) {
+        ee->cur <<= 8;
+        ee->cur |= data;
+        ee->haveaddr++;
+        if (ee->haveaddr == 2) {
+            ee->cur %= ee->rsize;
+            DPRINTK("Set pointer %04x\n", ee->cur);
+        }
+
+    } else {
+        if (ee->writable) {
+            DPRINTK("Send %02x\n", data);
+            ee->mem[ee->cur] = data;
+            ee->changed = true;
+        } else {
+            DPRINTK("Send error %02x read-only\n", data);
+        }
+        ee->cur = (ee->cur + 1u) % ee->rsize;
+
+    }
+
+    return 0;
+}
+
+static
+int at24c_eeprom_init(I2CSlave *i2c)
+{
+    EEPROMState *ee = AT24C_EE(i2c);
+
+    ee->mem = g_malloc0(ee->rsize);
+
+    if (ee->blk) {
+        int64_t len = blk_getlength(ee->blk);
+
+        if (len != ee->rsize) {
+            ERR(TYPE_AT24C_EE " : Backing file size %lu != %u\n",
+                    (unsigned long)len, (unsigned)ee->rsize);
+            exit(1);
+        }
+
+        if (blk_set_perm(ee->blk, BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE,
+                         BLK_PERM_ALL, &error_fatal) < 0)
+        {
+            ERR(TYPE_AT24C_EE
+                    " : Backing file incorrect permission\n");
+            exit(1);
+        }
+    }
+    return 0;
+}
+
+static
+void at24c_eeprom_reset(DeviceState *state)
+{
+    EEPROMState *ee = AT24C_EE(state);
+
+    ee->changed = false;
+    ee->cur = 0;
+    ee->haveaddr = 0;
+
+    memset(ee->mem, 0, ee->rsize);
+
+    if (ee->blk) {
+        int len = blk_pread(ee->blk, 0, ee->mem, ee->rsize);
+
+        if (len != ee->rsize) {
+            ERR(TYPE_AT24C_EE
+                    " : Failed initial sync with backing file\n");
+        }
+        DPRINTK("Reset read backing file\n");
+    }
+}
+
+static Property at24c_eeprom_props[] = {
+    DEFINE_PROP_UINT32("rom-size", EEPROMState, rsize, 0),
+    DEFINE_PROP_BOOL("writable", EEPROMState, writable, true),
+    DEFINE_PROP_DRIVE("drive", EEPROMState, blk),
+    DEFINE_PROP_END_OF_LIST()
+};
+
+static
+void at24c_eeprom_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = &at24c_eeprom_init;
+    k->event = &at24c_eeprom_event;
+    k->recv = &at24c_eeprom_recv;
+    k->send = &at24c_eeprom_send;
+
+    dc->props = at24c_eeprom_props;
+    dc->reset = at24c_eeprom_reset;
+}
+
+static
+const TypeInfo at24c_eeprom_type = {
+    .name = TYPE_AT24C_EE,
+    .parent = TYPE_I2C_SLAVE,
+    .instance_size = sizeof(EEPROMState),
+    .class_size = sizeof(I2CSlaveClass),
+    .class_init = at24c_eeprom_class_init,
+};
+
+static void at24c_eeprom_register(void)
+{
+    type_register_static(&at24c_eeprom_type);
+}
+
+type_init(at24c_eeprom_register)