Re: [Qemu-devel] [PATCH V5 2/8] hw/acpi_piix4.c: replace register_ioport*

[Jan Kiszka]

On 2012-08-26 11:10, Jan Kiszka wrote:
> On 2012-08-22 14:27, Julien Grall wrote:
>> This patch replaces all register_ioport* with the new memory API. It permits
>> to use the new Memory stuff like listener.
>>
>> Signed-off-by: Julien Grall <address@hidden>
>> ---
>>  hw/acpi_piix4.c |  160 
>> ++++++++++++++++++++++++++++++++++++++++++------------
>>  1 files changed, 124 insertions(+), 36 deletions(-)
>>
>> diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
>> index 0aace60..26d5559 100644
>> --- a/hw/acpi_piix4.c
>> +++ b/hw/acpi_piix4.c
>> @@ -28,6 +28,7 @@
>>  #include "range.h"
>>  #include "ioport.h"
>>  #include "fw_cfg.h"
>> +#include "exec-memory.h"
>>  
>>  //#define DEBUG
>>  
>> @@ -41,8 +42,7 @@
>>  
>>  #define GPE_BASE 0xafe0
>>  #define GPE_LEN 4
>> -#define PCI_UP_BASE 0xae00
>> -#define PCI_DOWN_BASE 0xae04
>> +#define PCI_BASE 0xaa00
>>  #define PCI_EJ_BASE 0xae08
>>  #define PCI_RMV_BASE 0xae0c
>>  
>> @@ -55,7 +55,7 @@ struct pci_status {
>>  
>>  typedef struct PIIX4PMState {
>>      PCIDevice dev;
>> -    IORange ioport;
>> +    MemoryRegion pm_io;
>>      ACPIREGS ar;
>>  
>>      APMState apm;
>> @@ -63,6 +63,13 @@ typedef struct PIIX4PMState {
>>      PMSMBus smb;
>>      uint32_t smb_io_base;
>>  
>> +    MemoryRegion smb_io;
>> +    MemoryRegion acpi_io;
>> +    MemoryRegion acpi_hot_io;
>> +    PortioList pci_hot_port_list;
>> +    MemoryRegion pciej_hot_io;
>> +    MemoryRegion pcirmv_hot_io;
>> +
>>      qemu_irq irq;
>>      qemu_irq smi_irq;
>>      int kvm_enabled;
>> @@ -108,12 +115,12 @@ static void pm_tmr_timer(ACPIREGS *ar)
>>      pm_update_sci(s);
>>  }
>>  
>> -static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width,
>> -                            uint64_t val)
>> +static void pm_ioport_write(void *opaque, target_phys_addr_t addr,
>> +                            uint64_t val, unsigned size)
>>  {
>> -    PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport);
>> +    PIIX4PMState *s = opaque;
>>  
>> -    if (width != 2) {
>> +    if (size != 2) {
>>          PIIX4_DPRINTF("PM write port=0x%04x width=%d val=0x%08x\n",
>>                        (unsigned)addr, width, (unsigned)val);
>>      }
>> @@ -137,11 +144,11 @@ static void pm_ioport_write(IORange *ioport, uint64_t 
>> addr, unsigned width,
>>                    (unsigned int)val);
>>  }
>>  
>> -static void pm_ioport_read(IORange *ioport, uint64_t addr, unsigned width,
>> -                            uint64_t *data)
>> +static uint64_t pm_ioport_read(void *opaque, target_phys_addr_t addr,
>> +                               unsigned size)
>>  {
>> -    PIIX4PMState *s = container_of(ioport, PIIX4PMState, ioport);
>> -    uint32_t val;
>> +    PIIX4PMState *s = opaque;
>> +    uint64_t val;
>>  
>>      switch(addr) {
>>      case 0x00:
>> @@ -161,12 +168,18 @@ static void pm_ioport_read(IORange *ioport, uint64_t 
>> addr, unsigned width,
>>          break;
>>      }
>>      PIIX4_DPRINTF("PM readw port=0x%04x val=0x%04x\n", (unsigned int)addr, 
>> val);
>> -    *data = val;
>> +
>> +    return val;
>>  }
>>  
>> -static const IORangeOps pm_iorange_ops = {
>> +static const MemoryRegionOps pm_io_ops = {
>>      .read = pm_ioport_read,
>>      .write = pm_ioport_write,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 2,
>> +        .max_access_size = 2,
>> +    },
>>  };
>>  
>>  static void apm_ctrl_changed(uint32_t val, void *arg)
>> @@ -183,7 +196,8 @@ static void apm_ctrl_changed(uint32_t val, void *arg)
>>      }
>>  }
>>  
>> -static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val)
>> +static void acpi_dbg_writel(void *opaque, target_phys_addr_t addr,
>> +                            uint64_t val, unsigned size)
>>  {
>>      PIIX4_DPRINTF("ACPI: DBG: 0x%08x\n", val);
>>  }
>> @@ -198,8 +212,10 @@ static void pm_io_space_update(PIIX4PMState *s)
>>  
>>          /* XXX: need to improve memory and ioport allocation */
>>          PIIX4_DPRINTF("PM: mapping to 0x%x\n", pm_io_base);
>> -        iorange_init(&s->ioport, &pm_iorange_ops, pm_io_base, 64);
>> -        ioport_register(&s->ioport);
>> +
>> +        memory_region_init_io(&s->pm_io, &pm_io_ops, s, "piix4-pm", 64);
>> +        memory_region_add_subregion(pci_address_space_io(&s->dev),
>> +                                    pm_io_base, &s->pm_io);
>>      }
>>  }
>>  
>> @@ -381,6 +397,25 @@ static void piix4_pm_machine_ready(Notifier *n, void 
>> *opaque)
>>  
>>  }
>>  
>> +static const MemoryRegionOps smb_io_ops = {
>> +    .read = smb_ioport_readb,
>> +    .write = smb_ioport_writeb,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 1,
>> +        .max_access_size = 1,
>> +    },
>> +};
>> +
>> +static const MemoryRegionOps acpi_io_ops = {
>> +    .write = acpi_dbg_writel,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 4,
>> +        .max_access_size = 4,
>> +    },
>> +};
>> +
>>  static int piix4_pm_initfn(PCIDevice *dev)
>>  {
>>      PIIX4PMState *s = DO_UPCAST(PIIX4PMState, dev, dev);
>> @@ -395,9 +430,11 @@ static int piix4_pm_initfn(PCIDevice *dev)
>>      pci_conf[0x40] = 0x01; /* PM io base read only bit */
>>  
>>      /* APM */
>> -    apm_init(&s->apm, apm_ctrl_changed, s);
>> +    apm_init(dev, &s->apm, apm_ctrl_changed, s);
>>  
>> -    register_ioport_write(ACPI_DBG_IO_ADDR, 4, 4, acpi_dbg_writel, s);
>> +    memory_region_init_io(&s->acpi_io, &acpi_io_ops, s, "piix4-acpi", 4);
>> +    memory_region_add_subregion(pci_address_space_io(dev), ACPI_DBG_IO_ADDR,
>> +                                &s->acpi_io);
>>  
>>      if (s->kvm_enabled) {
>>          /* Mark SMM as already inited to prevent SMM from running.  KVM 
>> does not
>> @@ -410,8 +447,10 @@ static int piix4_pm_initfn(PCIDevice *dev)
>>      pci_conf[0x90] = s->smb_io_base | 1;
>>      pci_conf[0x91] = s->smb_io_base >> 8;
>>      pci_conf[0xd2] = 0x09;
>> -    register_ioport_write(s->smb_io_base, 64, 1, smb_ioport_writeb, 
>> &s->smb);
>> -    register_ioport_read(s->smb_io_base, 64, 1, smb_ioport_readb, &s->smb);
>> +
>> +    memory_region_init_io(&s->smb_io, &smb_io_ops, &s->smb, "piix4-smb", 
>> 64);
>> +    memory_region_add_subregion(pci_address_space_io(dev), s->smb_io_base,
>> +                                &s->smb_io);
>>  
>>      acpi_pm_tmr_init(&s->ar, pm_tmr_timer);
>>      acpi_gpe_init(&s->ar, GPE_LEN);
>> @@ -496,16 +535,17 @@ static void piix4_pm_register_types(void)
>>  
>>  type_init(piix4_pm_register_types)
>>  
>> -static uint32_t gpe_readb(void *opaque, uint32_t addr)
>> +static uint64_t gpe_readb(void *opaque, target_phys_addr_t addr, unsigned 
>> size)
>>  {
>>      PIIX4PMState *s = opaque;
>> -    uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
>> +    uint64_t val = acpi_gpe_ioport_readb(&s->ar, addr);
>>  
>>      PIIX4_DPRINTF("gpe read %x == %x\n", addr, val);
>>      return val;
>>  }
>>  
>> -static void gpe_writeb(void *opaque, uint32_t addr, uint32_t val)
>> +static void gpe_writeb(void *opaque, target_phys_addr_t addr, uint64_t val,
>> +                       unsigned size)
>>  {
>>      PIIX4PMState *s = opaque;
>>  
>> @@ -537,21 +577,24 @@ static uint32_t pci_down_read(void *opaque, uint32_t 
>> addr)
>>      return val;
>>  }
>>  
>> -static uint32_t pci_features_read(void *opaque, uint32_t addr)
>> +static uint64_t pci_features_read(void *opaque, target_phys_addr_t addr,
>> +                                  unsigned 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)
>> +static void pciej_write(void *opaque, target_phys_addr_t addr, uint64_t val,
>> +                        unsigned size)
>>  {
>>      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)
>> +static uint64_t pcirmv_read(void *opaque, target_phys_addr_t addr,
>> +                            unsigned size)
>>  {
>>      PIIX4PMState *s = opaque;
>>  
>> @@ -561,20 +604,65 @@ static uint32_t pcirmv_read(void *opaque, uint32_t 
>> addr)
>>  static int piix4_device_hotplug(DeviceState *qdev, PCIDevice *dev,
>>                                  PCIHotplugState state);
>>  
>> -static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s)
>> -{
>> +static const MemoryRegionOps acpi_hot_io_ops = {
>> +    .read = gpe_readb,
>> +    .write = gpe_writeb,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 1,
>> +        .max_access_size = 1,
>> +    },
>> +};
>> +
>> +/* PCI hot plug registers */
>> +static const MemoryRegionPortio pci_hot_portio_list[] = {
>> +    { 0x00, 4, 4, .read = pci_up_read, }, /* 0xae00 */
>> +    { 0x04, 4, 4, .read = pci_down_read, }, /* 0xae04 */
>> +    PORTIO_END_OF_LIST(),
>> +};
>>  
>> -    register_ioport_write(GPE_BASE, GPE_LEN, 1, gpe_writeb, s);
>> -    register_ioport_read(GPE_BASE, GPE_LEN, 1,  gpe_readb, s);
>> -    acpi_gpe_blk(&s->ar, GPE_BASE);
>> +static const MemoryRegionOps pciej_hot_io_ops = {
>> +    .read = pci_features_read,
>> +    .write = pciej_write,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 4,
>> +        .max_access_size = 4,
>> +    },
>> +};
>>  
>> -    register_ioport_read(PCI_UP_BASE, 4, 4, pci_up_read, s);
>> -    register_ioport_read(PCI_DOWN_BASE, 4, 4, pci_down_read, s);
>> +static const MemoryRegionOps pcirmv_hot_io_ops = {
>> +    .read = pcirmv_read,
>> +    .endianness = DEVICE_NATIVE_ENDIAN,
>> +    .impl = {
>> +        .min_access_size = 4,
>> +        .max_access_size = 4,
>> +    },
>> +};
>>  
>> -    register_ioport_write(PCI_EJ_BASE, 4, 4, pciej_write, s);
>> -    register_ioport_read(PCI_EJ_BASE, 4, 4,  pci_features_read, s);
>> +static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s)
>> +{
>>  
>> -    register_ioport_read(PCI_RMV_BASE, 4, 4,  pcirmv_read, s);
>> +    memory_region_init_io(&s->acpi_hot_io, &acpi_hot_io_ops, s,
>> +                          "piix4-acpi-hot", GPE_LEN);
>> +    memory_region_add_subregion(pci_address_space_io(&s->dev), GPE_BASE,
>> +                                &s->acpi_hot_io);
>> +    acpi_gpe_blk(&s->ar, 0);
>> +
>> +    portio_list_init(&s->pci_hot_port_list, pci_hot_portio_list, s,
>> +                     "piix4-pci-hot");
>> +    portio_list_add(&s->pci_hot_port_list, pci_address_space_io(&s->dev),
>> +                    PCI_BASE);
>> +
>> +    memory_region_init_io(&s->pciej_hot_io, &pciej_hot_io_ops, s,
>> +                          "piix4-pciej-hot", 4);
>> +    memory_region_add_subregion(pci_address_space_io(&s->dev), PCI_EJ_BASE,
>> +                                &s->pciej_hot_io);
>> +
>> +    memory_region_init_io(&s->pcirmv_hot_io, &pcirmv_hot_io_ops, s,
>> +                          "piix4-pcirmv-hot", 4);
>> +    memory_region_add_subregion(pci_address_space_io(&s->dev), PCI_RMV_BASE,
>> +                                &s->pcirmv_hot_io);
>>  
>>      pci_bus_hotplug(bus, piix4_device_hotplug, &s->dev.qdev);
>>  }
>>
> 
> This patch doesn't build without patch 8 and then still generates warnings.

Sorry, it depends on patches 7 & 8. Then the warnings are gone as well.
Anyway, every patch has to build and work on its own.

Jan

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