[Qemu-devel] [PULL for-1.4] Memory API ioport cleanups

[Qemu-devel] [PULL for-1.4] Memory API ioport cleanups

[Andreas Färber]

Hello,

Here's a bugfix and a few more I/O port conversions to Memory API. Please pull.

Cc: Julien Grall <julien.grall@citrix.com>
Cc: Hervé Poussineau <hpoussin@reactos.org>


The following changes since commit cf7c3f0cb5a7129f57fa9e69d410d6a05031988c:

  virtio-9p: fix compilation error. (2013-01-14 18:52:39 -0600)

are available in the git repository at:

  git://github.com/afaerber/qemu-cpu.git memory-ioport

for you to fetch changes up to d054b57293f8b50660d5e8d5740239f6476076a4:

  acpi_piix4: Do not use old_portio-style callbacks (2013-01-15 18:14:54 +0100)

----------------------------------------------------------------
Hervé Poussineau (2):
      xen_platform: Do not use old_portio-style callbacks
      acpi_piix4: Do not use old_portio-style callbacks

Julien Grall (1):
      hw/dma.c: Fix conversion of ioport_register* to MemoryRegion

 hw/acpi_piix4.c   |   92 ++++++++++++++++++++++++-----------------------------
 hw/dma.c          |   22 ++++++-------
 hw/xen_platform.c |   21 ++++++------
 3 Dateien geändert, 62 Zeilen hinzugefügt(+), 73 Zeilen entfernt(-)

[Qemu-devel] [PATCH 1/3] hw/dma.c: Fix conversion of ioport_register* to MemoryRegion

[Andreas Färber]

From: Julien Grall <julien.grall@citrix.com>

The commit 582299336879504353e60c7937fbc70fea93f3da introduced a 1-shift for
some offset in DMA emulation.

Before the previous commit, which converted ioport_register_* to
MemoryRegion, the DMA controller registered 8 ioports with the following
formula:
base + ((8 + i) << d->shift) where 0 <= i < 8
When an IO occured within a Memory Region, DMA callback receives an
offset relative to the start address. Here the start address is:
base + (8 << d->shift).
The offset should be: (i << d->shift). After the shift is reverted, the
offsets are 0..7 not 1..8.

Fixes LP#1089996.

Reported-by: Andreas Gustafsson <gson@gson.org>
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/dma.c |   22 +++++++++++-----------
 1 Datei geändert, 11 Zeilen hinzugefügt(+), 11 Zeilen entfernt(-)

diff --git a/hw/dma.c b/hw/dma.c
index 0634baa..5bdf435 100644
--- a/hw/dma.c
+++ b/hw/dma.c
@@ -201,7 +201,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t data,
 
     iport = (nport >> d->dshift) & 0x0f;
     switch (iport) {
-    case 0x01:                  /* command */
+    case 0x00:                  /* command */
         if ((data != 0) && (data & CMD_NOT_SUPPORTED)) {
             dolog("command %"PRIx64" not supported\n", data);
             return;
@@ -209,7 +209,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t data,
         d->command = data;
         break;
 
-    case 0x02:
+    case 0x01:
         ichan = data & 3;
         if (data & 4) {
             d->status |= 1 << (ichan + 4);
@@ -221,7 +221,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t data,
         DMA_run();
         break;
 
-    case 0x03:                  /* single mask */
+    case 0x02:                  /* single mask */
         if (data & 4)
             d->mask |= 1 << (data & 3);
         else
@@ -229,7 +229,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t data,
         DMA_run();
         break;
 
-    case 0x04:                  /* mode */
+    case 0x03:                  /* mode */
         {
             ichan = data & 3;
 #ifdef DEBUG_DMA
@@ -248,23 +248,23 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t data,
             break;
         }
 
-    case 0x05:                  /* clear flip flop */
+    case 0x04:                  /* clear flip flop */
         d->flip_flop = 0;
         break;
 
-    case 0x06:                  /* reset */
+    case 0x05:                  /* reset */
         d->flip_flop = 0;
         d->mask = ~0;
         d->status = 0;
         d->command = 0;
         break;
 
-    case 0x07:                  /* clear mask for all channels */
+    case 0x06:                  /* clear mask for all channels */
         d->mask = 0;
         DMA_run();
         break;
 
-    case 0x08:                  /* write mask for all channels */
+    case 0x07:                  /* write mask for all channels */
         d->mask = data;
         DMA_run();
         break;
@@ -289,11 +289,11 @@ static uint64_t read_cont(void *opaque, hwaddr nport, unsigned size)
 
     iport = (nport >> d->dshift) & 0x0f;
     switch (iport) {
-    case 0x08:                  /* status */
+    case 0x00:                  /* status */
         val = d->status;
         d->status &= 0xf0;
         break;
-    case 0x0f:                  /* mask */
+    case 0x01:                  /* mask */
         val = d->mask;
         break;
     default:
@@ -468,7 +468,7 @@ void DMA_schedule(int nchan)
 static void dma_reset(void *opaque)
 {
     struct dma_cont *d = opaque;
-    write_cont(d, (0x06 << d->dshift), 0, 1);
+    write_cont(d, (0x05 << d->dshift), 0, 1);
 }
 
 static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int dma_len)
-- 
1.7.10.4

[Qemu-devel] [PATCH 2/3] xen_platform: Do not use old_portio-style callbacks

From: Hervé Poussineau <hpoussin@reactos.org>

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/xen_platform.c |   21 ++++++++++-----------
 1 Datei geändert, 10 Zeilen hinzugefügt(+), 11 Zeilen entfernt(-)

diff --git a/hw/xen_platform.c b/hw/xen_platform.c
index ca66047..8866468 100644
--- a/hw/xen_platform.c
+++ b/hw/xen_platform.c
@@ -279,7 +279,8 @@ static void platform_fixed_ioport_init(PCIXenPlatformState* s)
 
 /* Xen Platform PCI Device */
 
-static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
+static uint64_t xen_platform_ioport_readb(void *opaque, hwaddr addr,
+                                          unsigned int size)
 {
     if (addr == 0) {
         return platform_fixed_ioport_readb(opaque, 0);
@@ -288,30 +289,28 @@ static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
     }
 }
 
-static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
+static void xen_platform_ioport_writeb(void *opaque, hwaddr addr,
+                                       uint64_t val, unsigned int size)
 {
     PCIXenPlatformState *s = opaque;
 
     switch (addr) {
     case 0: /* Platform flags */
-        platform_fixed_ioport_writeb(opaque, 0, val);
+        platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val);
         break;
     case 8:
-        log_writeb(s, val);
+        log_writeb(s, (uint32_t)val);
         break;
     default:
         break;
     }
 }
 
-static MemoryRegionPortio xen_pci_portio[] = {
-    { 0, 0x100, 1, .read = xen_platform_ioport_readb, },
-    { 0, 0x100, 1, .write = xen_platform_ioport_writeb, },
-    PORTIO_END_OF_LIST()
-};
-
 static const MemoryRegionOps xen_pci_io_ops = {
-    .old_portio = xen_pci_portio,
+    .read  = xen_platform_ioport_readb,
+    .write = xen_platform_ioport_writeb,
+    .impl.min_access_size = 1,
+    .impl.max_access_size = 1,
 };
 
 static void platform_ioport_bar_setup(PCIXenPlatformState *d)
-- 
1.7.10.4

[PATCH 2/3] xen_platform: Do not use old_portio-style callbacks

[Andreas Färber]

From: Hervé Poussineau <hpoussin@reactos.org>

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/xen_platform.c |   21 ++++++++++-----------
 1 Datei geändert, 10 Zeilen hinzugefügt(+), 11 Zeilen entfernt(-)

diff --git a/hw/xen_platform.c b/hw/xen_platform.c
index ca66047..8866468 100644
--- a/hw/xen_platform.c
+++ b/hw/xen_platform.c
@@ -279,7 +279,8 @@ static void platform_fixed_ioport_init(PCIXenPlatformState* s)
 
 /* Xen Platform PCI Device */
 
-static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
+static uint64_t xen_platform_ioport_readb(void *opaque, hwaddr addr,
+                                          unsigned int size)
 {
     if (addr == 0) {
         return platform_fixed_ioport_readb(opaque, 0);
@@ -288,30 +289,28 @@ static uint32_t xen_platform_ioport_readb(void *opaque, uint32_t addr)
     }
 }
 
-static void xen_platform_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
+static void xen_platform_ioport_writeb(void *opaque, hwaddr addr,
+                                       uint64_t val, unsigned int size)
 {
     PCIXenPlatformState *s = opaque;
 
     switch (addr) {
     case 0: /* Platform flags */
-        platform_fixed_ioport_writeb(opaque, 0, val);
+        platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val);
         break;
     case 8:
-        log_writeb(s, val);
+        log_writeb(s, (uint32_t)val);
         break;
     default:
         break;
     }
 }
 
-static MemoryRegionPortio xen_pci_portio[] = {
-    { 0, 0x100, 1, .read = xen_platform_ioport_readb, },
-    { 0, 0x100, 1, .write = xen_platform_ioport_writeb, },
-    PORTIO_END_OF_LIST()
-};
-
 static const MemoryRegionOps xen_pci_io_ops = {
-    .old_portio = xen_pci_portio,
+    .read  = xen_platform_ioport_readb,
+    .write = xen_platform_ioport_writeb,
+    .impl.min_access_size = 1,
+    .impl.max_access_size = 1,
 };
 
 static void platform_ioport_bar_setup(PCIXenPlatformState *d)
-- 
1.7.10.4

[Qemu-devel] [PATCH 3/3] acpi_piix4: Do not use old_portio-style callbacks

[Andreas Färber]

From: Hervé Poussineau <hpoussin@reactos.org>

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
[AF: Used HWADDR_PRIx for hwaddr PIIX4_DPRINTF()]
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 hw/acpi_piix4.c |   92 +++++++++++++++++++++++++------------------------------
 1 Datei geändert, 41 Zeilen hinzugefügt(+), 51 Zeilen entfernt(-)

diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
index 2f84b4e..0d33849 100644
--- a/hw/acpi_piix4.c
+++ b/hw/acpi_piix4.c
@@ -531,68 +531,58 @@ static const MemoryRegionOps piix4_gpe_ops = {
     .endianness = DEVICE_LITTLE_ENDIAN,
 };
 
-static uint32_t pci_up_read(void *opaque, uint32_t addr)
+static uint64_t pci_read(void *opaque, hwaddr addr, unsigned int size)
 {
     PIIX4PMState *s = opaque;
-    uint32_t val;
-
-    /* Manufacture an "up" value to cause a device check on any hotplug
-     * slot with a device.  Extra device checks are harmless. */
-    val = s->pci0_slot_device_present & s->pci0_hotplug_enable;
-
-    PIIX4_DPRINTF("pci_up_read %x\n", val);
-    return val;
-}
-
-static uint32_t pci_down_read(void *opaque, uint32_t addr)
-{
-    PIIX4PMState *s = opaque;
-    uint32_t val = s->pci0_status.down;
+    uint32_t val = 0;
+
+    switch (addr) {
+    case PCI_UP_BASE - PCI_HOTPLUG_ADDR:
+        /* Manufacture an "up" value to cause a device check on any hotplug
+         * slot with a device.  Extra device checks are harmless. */
+        val = s->pci0_slot_device_present & s->pci0_hotplug_enable;
+        PIIX4_DPRINTF("pci_up_read %x\n", val);
+        break;
+    case PCI_DOWN_BASE - PCI_HOTPLUG_ADDR:
+        val = s->pci0_status.down;
+        PIIX4_DPRINTF("pci_down_read %x\n", val);
+        break;
+    case PCI_EJ_BASE - PCI_HOTPLUG_ADDR:
+        /* No feature defined yet */
+        PIIX4_DPRINTF("pci_features_read %x\n", val);
+        break;
+    case PCI_RMV_BASE - PCI_HOTPLUG_ADDR:
+        val = s->pci0_hotplug_enable;
+        break;
+    default:
+        break;
+    }
 
-    PIIX4_DPRINTF("pci_down_read %x\n", val);
     return val;
 }
 
-static uint32_t pci_features_read(void *opaque, uint32_t addr)
+static void pci_write(void *opaque, hwaddr addr, uint64_t data,
+                      unsigned int size)
 {
-    /* No feature defined yet */
-    PIIX4_DPRINTF("pci_features_read %x\n", 0);
-    return 0;
-}
-
-static void pciej_write(void *opaque, uint32_t addr, uint32_t val)
-{
-    acpi_piix_eject_slot(opaque, val);
-
-    PIIX4_DPRINTF("pciej write %x <== %d\n", addr, val);
-}
-
-static uint32_t pcirmv_read(void *opaque, uint32_t addr)
-{
-    PIIX4PMState *s = opaque;
-
-    return s->pci0_hotplug_enable;
+    switch (addr) {
+    case PCI_EJ_BASE - PCI_HOTPLUG_ADDR:
+        acpi_piix_eject_slot(opaque, (uint32_t)data);
+        PIIX4_DPRINTF("pciej write %" HWADDR_PRIx " <== % " PRIu64 "\n",
+                      addr, data);
+        break;
+    default:
+        break;
+    }
 }
 
 static const MemoryRegionOps piix4_pci_ops = {
-    .old_portio = (MemoryRegionPortio[]) {
-        {
-            .offset = PCI_UP_BASE - PCI_HOTPLUG_ADDR,   .len = 4, .size = 4,
-            .read = pci_up_read,
-        },{
-            .offset = PCI_DOWN_BASE - PCI_HOTPLUG_ADDR, .len = 4, .size = 4,
-            .read = pci_down_read,
-        },{
-            .offset = PCI_EJ_BASE - PCI_HOTPLUG_ADDR,   .len = 4, .size = 4,
-            .read = pci_features_read,
-            .write = pciej_write,
-        },{
-            .offset = PCI_RMV_BASE - PCI_HOTPLUG_ADDR,  .len = 4, .size = 4,
-            .read = pcirmv_read,
-        },
-        PORTIO_END_OF_LIST()
-    },
+    .read = pci_read,
+    .write = pci_write,
     .endianness = DEVICE_LITTLE_ENDIAN,
+    .valid = {
+        .min_access_size = 4,
+        .max_access_size = 4,
+    },
 };
 
 static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev,
-- 
1.7.10.4

Re: [Qemu-devel] [PULL for-1.4] Memory API ioport cleanups

[Andreas Färber]

Am 15.01.2013 19:31, schrieb Andreas Färber:
> Hello,
> 
> Here's a bugfix and a few more I/O port conversions to Memory API. Please pull.

Nah, please ignore, v2 coming up...

> Cc: Julien Grall <julien.grall@citrix.com>
> Cc: Hervé Poussineau <hpoussin@reactos.org>
> 
> 
> The following changes since commit cf7c3f0cb5a7129f57fa9e69d410d6a05031988c:
> 
>   virtio-9p: fix compilation error. (2013-01-14 18:52:39 -0600)
> 
> are available in the git repository at:
> 
>   git://github.com/afaerber/qemu-cpu.git memory-ioport
> 
> for you to fetch changes up to d054b57293f8b50660d5e8d5740239f6476076a4:
> 
>   acpi_piix4: Do not use old_portio-style callbacks (2013-01-15 18:14:54 +0100)
> 
> ----------------------------------------------------------------
> Hervé Poussineau (2):
>       xen_platform: Do not use old_portio-style callbacks
>       acpi_piix4: Do not use old_portio-style callbacks
> 
> Julien Grall (1):
>       hw/dma.c: Fix conversion of ioport_register* to MemoryRegion
> 
>  hw/acpi_piix4.c   |   92 ++++++++++++++++++++++++-----------------------------
>  hw/dma.c          |   22 ++++++-------
>  hw/xen_platform.c |   21 ++++++------
>  3 Dateien geändert, 62 Zeilen hinzugefügt(+), 73 Zeilen entfernt(-)
> 


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