[v2,67/86] ppc:ppc440_bamboo/sam460ex: use memdev for RAM

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: balaton@eik.bme.hu
CC: david@gibson.dropbear.id.au
CC: qemu-ppc@nongnu.org
---
 include/hw/ppc/ppc4xx.h | 2 +-
 hw/ppc/ppc440_bamboo.c  | 3 ++-
 hw/ppc/ppc4xx_devs.c    | 9 +++------
 hw/ppc/sam460ex.c       | 3 ++-
 4 files changed, 8 insertions(+), 9 deletions(-)

On Wed, 15 Jan 2020, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>  MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
>
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: balaton@eik.bme.hu
> CC: david@gibson.dropbear.id.au
> CC: qemu-ppc@nongnu.org
> ---
> include/hw/ppc/ppc4xx.h | 2 +-
> hw/ppc/ppc440_bamboo.c  | 3 ++-
> hw/ppc/ppc4xx_devs.c    | 9 +++------
> hw/ppc/sam460ex.c       | 3 ++-
> 4 files changed, 8 insertions(+), 9 deletions(-)
>
> diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h
> index 103c875..f0bef46 100644
> --- a/include/hw/ppc/ppc4xx.h
> +++ b/include/hw/ppc/ppc4xx.h
> @@ -42,7 +42,7 @@ enum {
> qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
>                        uint32_t dcr_base, int has_ssr, int has_vr);
>
> -void ppc4xx_sdram_prep(ram_addr_t ram_size, int nr_banks,
> +void ppc4xx_sdram_prep(MemoryRegion *ram, int nr_banks,
>                        MemoryRegion ram_memories[],
>                        hwaddr ram_bases[], hwaddr ram_sizes[],
>                        const ram_addr_t sdram_bank_sizes[]);
> diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
> index c162598..cb4a1ad 100644
> --- a/hw/ppc/ppc440_bamboo.c
> +++ b/hw/ppc/ppc440_bamboo.c
> @@ -202,7 +202,7 @@ static void bamboo_init(MachineState *machine)
>     /* SDRAM controller */
>     memset(ram_bases, 0, sizeof(ram_bases));
>     memset(ram_sizes, 0, sizeof(ram_sizes));
> -    ppc4xx_sdram_prep(ram_size, PPC440EP_SDRAM_NR_BANKS, ram_memories,
> +    ppc4xx_sdram_prep(machine->ram, PPC440EP_SDRAM_NR_BANKS, ram_memories,
>                       ram_bases, ram_sizes, ppc440ep_sdram_bank_sizes);
>     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
>     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
> @@ -289,6 +289,7 @@ static void bamboo_machine_init(MachineClass *mc)
>     mc->desc = "bamboo";
>     mc->init = bamboo_init;
>     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
> +    mc->default_ram_id = "ppc4xx.sdram";
> }
>
> DEFINE_MACHINE("bamboo", bamboo_machine_init)
> diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
> index 92d33a4..9c3762d 100644
> --- a/hw/ppc/ppc4xx_devs.c
> +++ b/hw/ppc/ppc4xx_devs.c
> @@ -673,13 +673,12 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
>  * The 4xx SDRAM controller supports a small number of banks, and each bank
>  * must be one of a small set of sizes. The number of banks and the supported
>  * sizes varies by SoC. */
> -void ppc4xx_sdram_prep(ram_addr_t ram_size, int nr_banks,
> +void ppc4xx_sdram_prep(MemoryRegion *ram, int nr_banks,

Maybe you need to also update the comment above which talks about 
'ram_size' that you don't have any more.

>                        MemoryRegion ram_memories[],
>                        hwaddr ram_bases[], hwaddr ram_sizes[],
>                        const ram_addr_t sdram_bank_sizes[])
> {
> -    MemoryRegion *ram = g_malloc0(sizeof(*ram));
> -    ram_addr_t size_left = ram_size;
> +    ram_addr_t size_left = memory_region_size(ram);
>     ram_addr_t base = 0;
>     ram_addr_t bank_size;
>     int last_bank = 0;
> @@ -704,7 +703,7 @@ void ppc4xx_sdram_prep(ram_addr_t ram_size, int nr_banks,
>     }
>
>     if (size_left) {
> -        ram_addr_t used_size = ram_size - size_left;
> +        ram_addr_t used_size = memory_region_size(ram) - size_left;
>         GString *s = g_string_new(NULL);
>
>         for (i = 0; sdram_bank_sizes[i]; i++) {
> @@ -721,8 +720,6 @@ void ppc4xx_sdram_prep(ram_addr_t ram_size, int nr_banks,
>         exit(EXIT_FAILURE);
>     }
>
> -    memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
> -
>     for (i = 0; i <= last_bank; i++) {

Can this for cycle now completely merged with the one above and init the 
alias regions also there?

Regards,
BALATON Zoltan

>         char name[32];
>         snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
> diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
> index ec7ac1f..8d27a3f 100644
> --- a/hw/ppc/sam460ex.c
> +++ b/hw/ppc/sam460ex.c
> @@ -324,7 +324,7 @@ static void sam460ex_init(MachineState *machine)
>     /* SDRAM controller */
>     /* put all RAM on first bank because board has one slot
>      * and firmware only checks that */
> -    ppc4xx_sdram_prep(machine->ram_size, 1, ram_memories, ram_bases, ram_sizes,
> +    ppc4xx_sdram_prep(machine->ram, 1, ram_memories, ram_bases, ram_sizes,
>                       ppc460ex_sdram_bank_sizes);
>
>     /* FIXME: does 460EX have ECC interrupts? */
> @@ -483,6 +483,7 @@ static void sam460ex_machine_init(MachineClass *mc)
>     mc->init = sam460ex_init;
>     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("460exb");
>     mc->default_ram_size = 512 * MiB;
> +    mc->default_ram_id = "ppc4xx.sdram";
> }
>
> DEFINE_MACHINE("sam460ex", sam460ex_machine_init)
>