diff options
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/Makefile | 2 | ||||
| -rw-r--r-- | drivers/pci/pci_sh4.c | 76 | ||||
| -rw-r--r-- | drivers/pci/pci_sh7780.c | 107 |
3 files changed, 185 insertions, 0 deletions
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index fe45839..ef7781f 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -31,6 +31,8 @@ COBJS-y += pci_auto.o COBJS-y += pci_indirect.o COBJS-y += tsi108_pci.o COBJS-y += w83c553f.o +COBJS-$(CONFIG_SH4_PCI) += pci_sh4.o +COBJS-$(CONFIG_SH7780_PCI) +=pci_sh7780.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/pci/pci_sh4.c b/drivers/pci/pci_sh4.c new file mode 100644 index 0000000..1290c0a --- /dev/null +++ b/drivers/pci/pci_sh4.c @@ -0,0 +1,76 @@ +/* + * SH4 PCI Controller (PCIC) for U-Boot. + * (C) Dustin McIntire (dustin@sensoria.com) + * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com> + * + * u-boot/cpu/sh4/pci-sh4.c + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +#include <asm/processor.h> +#include <asm/io.h> +#include <asm/pci.h> +#include <pci.h> + +int pci_sh4_init(struct pci_controller *hose) +{ + hose->first_busno = 0; + hose->region_count = 0; + hose->last_busno = 0xff; + + /* PCI memory space */ + pci_set_region(hose->regions + 0, + CONFIG_PCI_MEM_BUS, + CONFIG_PCI_MEM_PHYS, + CONFIG_PCI_MEM_SIZE, + PCI_REGION_MEM); + hose->region_count++; + + /* PCI IO space */ + pci_set_region(hose->regions + 1, + CONFIG_PCI_IO_BUS, + CONFIG_PCI_IO_PHYS, + CONFIG_PCI_IO_SIZE, + PCI_REGION_IO); + hose->region_count++; + + udelay(1000); + + pci_set_ops(hose, + pci_hose_read_config_byte_via_dword, + pci_hose_read_config_word_via_dword, + pci_sh4_read_config_dword, + pci_hose_write_config_byte_via_dword, + pci_hose_write_config_word_via_dword, + pci_sh4_write_config_dword); + + pci_register_hose(hose); + + udelay(1000); + +#ifdef CONFIG_PCI_SCAN_SHOW + printf("PCI: Bus Dev VenId DevId Class Int\n"); +#endif + hose->last_busno = pci_hose_scan(hose); + return 0; +} diff --git a/drivers/pci/pci_sh7780.c b/drivers/pci/pci_sh7780.c new file mode 100644 index 0000000..d63d67d --- /dev/null +++ b/drivers/pci/pci_sh7780.c @@ -0,0 +1,107 @@ +/* + * SH7780 PCI Controller (PCIC) for U-Boot. + * (C) Dustin McIntire (dustin@sensoria.com) + * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> + +#include <asm/processor.h> +#include <asm/io.h> +#include <pci.h> + +#define SH7780_VENDOR_ID 0x1912 +#define SH7780_DEVICE_ID 0x0002 +#define SH7780_PCICR_PREFIX 0xA5000000 +#define SH7780_PCICR_PFCS 0x00000800 +#define SH7780_PCICR_FTO 0x00000400 +#define SH7780_PCICR_PFE 0x00000200 +#define SH7780_PCICR_TBS 0x00000100 +#define SH7780_PCICR_ARBM 0x00000040 +#define SH7780_PCICR_IOCS 0x00000004 +#define SH7780_PCICR_PRST 0x00000002 +#define SH7780_PCICR_CFIN 0x00000001 + +#define p4_in(addr) *((vu_long *)addr) +#define p4_out(data,addr) *(vu_long *)(addr) = (data) +#define p4_inw(addr) *((vu_short *)addr) +#define p4_outw(data,addr) *(vu_short *)(addr) = (data) + +int pci_sh4_read_config_dword(struct pci_controller *hose, + pci_dev_t dev, int offset, u32 *value) +{ + u32 par_data = 0x80000000 | dev; + + p4_out(par_data | (offset & 0xfc), SH7780_PCIPAR); + *value = p4_in(SH7780_PCIPDR); + + return 0; +} + +int pci_sh4_write_config_dword(struct pci_controller *hose, + pci_dev_t dev, int offset, u32 value) +{ + u32 par_data = 0x80000000 | dev; + + p4_out(par_data | (offset & 0xfc), SH7780_PCIPAR); + p4_out(value, SH7780_PCIPDR); + return 0; +} + +int pci_sh7780_init(struct pci_controller *hose) +{ + p4_out(0x01, SH7780_PCIECR); + + if (p4_inw(SH7780_PCIVID) != SH7780_VENDOR_ID + && p4_inw(SH7780_PCIDID) != SH7780_DEVICE_ID){ + printf("PCI: Unknown PCI host bridge.\n"); + return; + } + printf("PCI: SH7780 PCI host bridge found.\n"); + + /* Toggle PCI reset pin */ + p4_out((SH7780_PCICR_PREFIX | SH7780_PCICR_PRST), SH7780_PCICR); + udelay(100000); + p4_out(SH7780_PCICR_PREFIX, SH7780_PCICR); + p4_outw(0x0047, SH7780_PCICMD); + + p4_out(0x07F00001, SH7780_PCILSR0); + p4_out(0x08000000, SH7780_PCILAR0); + p4_out(0x00000000, SH7780_PCILSR1); + p4_out(0, SH7780_PCILAR1); + p4_out(0x08000000, SH7780_PCIMBAR0); + p4_out(0x00000000, SH7780_PCIMBAR1); + + p4_out(0xFD000000, SH7780_PCIMBR0); + p4_out(0x00FC0000, SH7780_PCIMBMR0); + + /* if use Operand Cache then enable PCICSCR Soonp bits. */ + p4_out(0x08000000, SH7780_PCICSAR0); + p4_out(0x0000001B, SH7780_PCICSCR0); /* Snoop bit :On */ + + p4_out((SH7780_PCICR_PREFIX | SH7780_PCICR_CFIN | SH7780_PCICR_ARBM + | SH7780_PCICR_FTO | SH7780_PCICR_PFCS | SH7780_PCICR_PFE), + SH7780_PCICR); + + pci_sh4_init(hose); + return 0; +} |