Re: [Qemu-devel] [PATCH] SH: r2d pci support.

["andrzej zaborowski" <balrogg@gmail.com>]

Hi,

2008/11/3  <takasi-y@ops.dti.ne.jp>:
> This patch adds pci support to sh/r2d board.
> This is the first user of PCIC support I formerly sent.
>
> PCIC actually is inside of chip with CPU core on SH7751.
> But, this code is written as if SH7750 and PCIC are on board.
> I care little about physical device boundary, but fitting with qemu's design.
>
> This patch also adds some BSC(Bus State Controller) registers,
> because PCI device driver software have to accesses them.
>
> /yoshii
>
> Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
> ---
>  hw/r2d.c    |   26 ++++++++++++++++++++++++++
>  hw/sh7750.c |   17 +++++++++++++++++
>  2 files changed, 43 insertions(+), 0 deletions(-)
>
> diff --git a/hw/r2d.c b/hw/r2d.c
> index f818711..54529ca 100644
> --- a/hw/r2d.c
> +++ b/hw/r2d.c
> @@ -27,6 +27,9 @@
>  #include "sh.h"
>  #include "sysemu.h"
>  #include "boards.h"
> +#include "pci.h"
> +#include "net.h"
> +#include "sh7750_regs.h"
>
>  #define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */
>  #define SDRAM_SIZE 0x04000000
> @@ -183,6 +186,17 @@ static qemu_irq *r2d_fpga_init(target_phys_addr_t base, qemu_irq irl)
>     return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS);
>  }
>
> +static void r2d_pci_set_irq(qemu_irq *p, int n, int l)
> +{
> +    qemu_set_irq(p[n], l);
> +}
> +
> +static int r2d_pci_map_irq(PCIDevice *d, int irq_num)
> +{
> +    const int intx[] = { PCI_INTA, PCI_INTB, PCI_INTC, PCI_INTD };
> +    return intx[d->devfn>>3];
> +}
> +
>  static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
>               const char *boot_device, DisplayState * ds,
>              const char *kernel_filename, const char *kernel_cmdline,
> @@ -191,6 +205,8 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
>     CPUState *env;
>     struct SH7750State *s;
>     qemu_irq *irq;
> +    PCIBus *pci;
> +    int i;
>
>     if (!cpu_model)
>         cpu_model = "SH7751R";
> @@ -206,14 +222,24 @@ static void r2d_init(ram_addr_t ram_size, int vga_ram_size,
>     /* Register peripherals */
>     s = sh7750_init(env);
>     irq = r2d_fpga_init(0x04000000, sh7750_irl(s));
> +    pci = sh_pci_register_bus(r2d_pci_set_irq, r2d_pci_map_irq, irq, 0, 4);
>
>     /* onboard CF (True IDE mode, Master only). */
>     mmio_ide_init(0x14001000, 0x1400080c, irq[CF_IDE], 1,
>         drives_table[drive_get_index(IF_IDE, 0, 0)].bdrv, NULL);
> +    /* NIC: rtl8139 on-board, and 2 slots. */
> +    pci_rtl8139_init(pci, &nd_table[0], 2<<3);
> +    for (i = 1; i < nb_nics; i++)
> +        pci_nic_init(pci, &nd_table[i], -1);
>
>     /* Todo: register on board registers */
>     {
>       int kernel_size;
> +      /* initialization which should be done by firmware */
> +      uint32_t bcr1 = 1<<3; // cs3 SDRAM
> +      uint16_t bcr2 = 3<<(3*2); // cs3 32bit
> +      cpu_physical_memory_write(SH7750_BCR1_A7,&bcr1,4);
> +      cpu_physical_memory_write(SH7750_BCR2_A7,&bcr2,2);

I pushed this patch but it looks like there may be an endianness problem here.

Cheers