ide pc: Cut out the block layer geometry middleman

PC BIOS setup needs IDE geometry information.  Get it directly from
the device model rather than through the block layer.  In preparation
of purging geometry from the block layer, which will happen later in
this series.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

5 files changed, 49 insertions, 31 deletions

diff --git a/hw/ide.h b/hw/ide.h
index 0b18c9016b..2db4079f68 100644
--- a/hw/ide.h
+++ b/hw/ide.h
@@ -29,7 +29,9 @@ void mmio_ide_init (target_phys_addr_t membase, target_phys_addr_t membase2,
                     qemu_irq irq, int shift,
                     DriveInfo *hd0, DriveInfo *hd1);
 
-void ide_get_bs(BlockDriverState *bs[], BusState *qbus);
+int ide_get_geometry(BusState *bus, int unit,
+                     int16_t *cyls, int8_t *heads, int8_t *secs);
+int ide_get_bios_chs_trans(BusState *bus, int unit);
 
 /* ide/core.c */
 void ide_drive_get(DriveInfo **hd, int max_bus);
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 28f04add5d..7f5ad0788b 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1934,7 +1934,7 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
     s->drive_kind = kind;
 
     bdrv_get_geometry(bs, &nb_sectors);
-    hd_geometry_guess(bs, &cylinders, &heads, &secs, NULL);
+    hd_geometry_guess(bs, &cylinders, &heads, &secs, &s->chs_trans);
     if (cylinders < 1 || cylinders > 16383) {
         error_report("cyls must be between 1 and 16383");
         return -1;
diff --git a/hw/ide/internal.h b/hw/ide/internal.h
index 1a02f57bf5..56c718ef6b 100644
--- a/hw/ide/internal.h
+++ b/hw/ide/internal.h
@@ -344,7 +344,7 @@ struct IDEState {
     uint8_t unit;
     /* ide config */
     IDEDriveKind drive_kind;
-    int cylinders, heads, sectors;
+    int cylinders, heads, sectors, chs_trans;
     int64_t nb_sectors;
     int mult_sectors;
     int identify_set;
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index c122395401..87e0b75ae4 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -111,11 +111,24 @@ IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
     return DO_UPCAST(IDEDevice, qdev, dev);
 }
 
-void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
+int ide_get_geometry(BusState *bus, int unit,
+                     int16_t *cyls, int8_t *heads, int8_t *secs)
 {
-    IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus);
-    bs[0] = bus->master ? bus->master->conf.bs : NULL;
-    bs[1] = bus->slave  ? bus->slave->conf.bs  : NULL;
+    IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
+
+    if (!s->bs) {
+        return -1;
+    }
+
+    *cyls = s->cylinders;
+    *heads = s->heads;
+    *secs = s->sectors;
+    return 0;
+}
+
+int ide_get_bios_chs_trans(BusState *bus, int unit)
+{
+    return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
 }
 
 /* --------------------------------- */
diff --git a/hw/pc.c b/hw/pc.c
index 91cf77dafd..89a0c661db 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -216,11 +216,9 @@ static int cmos_get_fd_drive_type(FDriveType fd0)
     return val;
 }
 
-static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd,
-                         ISADevice *s)
+static void cmos_init_hd(ISADevice *s, int type_ofs, int info_ofs,
+                         int16_t cylinders, int8_t heads, int8_t sectors)
 {
-    int cylinders, heads, sectors;
-    bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
     rtc_set_memory(s, type_ofs, 47);
     rtc_set_memory(s, info_ofs, cylinders);
     rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
@@ -281,37 +279,42 @@ static int pc_boot_set(void *opaque, const char *boot_device)
 
 typedef struct pc_cmos_init_late_arg {
     ISADevice *rtc_state;
-    BusState *idebus0, *idebus1;
+    BusState *idebus[2];
 } pc_cmos_init_late_arg;
 
 static void pc_cmos_init_late(void *opaque)
 {
     pc_cmos_init_late_arg *arg = opaque;
     ISADevice *s = arg->rtc_state;
+    int16_t cylinders;
+    int8_t heads, sectors;
     int val;
-    BlockDriverState *hd_table[4];
     int i;
 
-    ide_get_bs(hd_table, arg->idebus0);
-    ide_get_bs(hd_table + 2, arg->idebus1);
-
-    rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
-    if (hd_table[0])
-        cmos_init_hd(0x19, 0x1b, hd_table[0], s);
-    if (hd_table[1])
-        cmos_init_hd(0x1a, 0x24, hd_table[1], s);
+    val = 0;
+    if (ide_get_geometry(arg->idebus[0], 0,
+                         &cylinders, &heads, &sectors) >= 0) {
+        cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors);
+        val |= 0xf0;
+    }
+    if (ide_get_geometry(arg->idebus[0], 1,
+                         &cylinders, &heads, &sectors) >= 0) {
+        cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors);
+        val |= 0x0f;
+    }
+    rtc_set_memory(s, 0x12, val);
 
     val = 0;
     for (i = 0; i < 4; i++) {
-        if (hd_table[i]) {
-            int cylinders, heads, sectors, translation;
-            /* NOTE: bdrv_get_geometry_hint() returns the physical
-                geometry.  It is always such that: 1 <= sects <= 63, 1
-                <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
-                geometry can be different if a translation is done. */
-            translation = bdrv_get_translation_hint(hd_table[i]);
+        /* NOTE: ide_get_geometry() returns the physical
+           geometry.  It is always such that: 1 <= sects <= 63, 1
+           <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
+           geometry can be different if a translation is done. */
+        if (ide_get_geometry(arg->idebus[i / 2], i % 2,
+                             &cylinders, &heads, &sectors) >= 0) {
+            int translation = ide_get_bios_chs_trans(arg->idebus[i / 2],
+                                                     i % 2);
             if (translation == BIOS_ATA_TRANSLATION_AUTO) {
-                bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
                 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
                     /* No translation. */
                     translation = 0;
@@ -411,8 +414,8 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
 
     /* hard drives */
     arg.rtc_state = s;
-    arg.idebus0 = idebus0;
-    arg.idebus1 = idebus1;
+    arg.idebus[0] = idebus0;
+    arg.idebus[1] = idebus1;
     qemu_register_reset(pc_cmos_init_late, &arg);
 }