Moved sub-features of the SC520 code which is currently selectively compiled using #ifdef out of sc520.c into individual files selectively compiled via the makefile Signed-off-by: Graeme Russ <graeme.russ at gmail.com>master
Graeme Russ
17 years ago
committed by
Wolfgang Denk
parent
abf0cd3dff
commit
6d7f610b09
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/*
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* (C) Copyright 2002 |
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* Daniel Engström, Omicron Ceti AB <daniel@omicron.se>. |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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/* stuff specific for the sc520, but independent of implementation */ |
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#include <common.h> |
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#include <pci.h> |
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#include <asm/pci.h> |
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#include <asm/ic/sc520.h> |
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static struct { |
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u8 priority; |
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u16 level_reg; |
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u8 level_bit; |
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} sc520_irq[] = { |
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{ SC520_IRQ0, SC520_MPICMODE, 0x01 }, |
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{ SC520_IRQ1, SC520_MPICMODE, 0x02 }, |
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{ SC520_IRQ2, SC520_SL1PICMODE, 0x02 }, |
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{ SC520_IRQ3, SC520_MPICMODE, 0x08 }, |
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{ SC520_IRQ4, SC520_MPICMODE, 0x10 }, |
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{ SC520_IRQ5, SC520_MPICMODE, 0x20 }, |
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{ SC520_IRQ6, SC520_MPICMODE, 0x40 }, |
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{ SC520_IRQ7, SC520_MPICMODE, 0x80 }, |
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{ SC520_IRQ8, SC520_SL1PICMODE, 0x01 }, |
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{ SC520_IRQ9, SC520_SL1PICMODE, 0x02 }, |
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{ SC520_IRQ10, SC520_SL1PICMODE, 0x04 }, |
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{ SC520_IRQ11, SC520_SL1PICMODE, 0x08 }, |
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{ SC520_IRQ12, SC520_SL1PICMODE, 0x10 }, |
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{ SC520_IRQ13, SC520_SL1PICMODE, 0x20 }, |
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{ SC520_IRQ14, SC520_SL1PICMODE, 0x40 }, |
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{ SC520_IRQ15, SC520_SL1PICMODE, 0x80 } |
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}; |
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/* The interrupt used for PCI INTA-INTD */ |
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int sc520_pci_ints[15] = { |
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-1, -1, -1, -1, -1, -1, -1, -1, |
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-1, -1, -1, -1, -1, -1, -1 |
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}; |
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/* utility function to configure a pci interrupt */ |
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int pci_sc520_set_irq(int pci_pin, int irq) |
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{ |
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int i; |
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# if 1 |
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printf("set_irq(): map INT%c to IRQ%d\n", pci_pin + 'A', irq); |
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#endif |
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if (irq < 0 || irq > 15) { |
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return -1; /* illegal irq */ |
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} |
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if (pci_pin < 0 || pci_pin > 15) { |
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return -1; /* illegal pci int pin */ |
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} |
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/* first disable any non-pci interrupt source that use
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* this level */ |
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for (i=SC520_GPTMR0MAP;i<=SC520_GP10IMAP;i++) { |
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if (i>=SC520_PCIINTAMAP&&i<=SC520_PCIINTDMAP) { |
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continue; |
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} |
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if (read_mmcr_byte(i) == sc520_irq[irq].priority) { |
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write_mmcr_byte(i, SC520_IRQ_DISABLED); |
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} |
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} |
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/* Set the trigger to level */ |
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write_mmcr_byte(sc520_irq[irq].level_reg, |
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read_mmcr_byte(sc520_irq[irq].level_reg) | sc520_irq[irq].level_bit); |
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if (pci_pin < 4) { |
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/* PCI INTA-INTD */ |
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/* route the interrupt */ |
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write_mmcr_byte(SC520_PCIINTAMAP + pci_pin, sc520_irq[irq].priority); |
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} else { |
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/* GPIRQ0-GPIRQ10 used for additional PCI INTS */ |
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write_mmcr_byte(SC520_GP0IMAP + pci_pin - 4, sc520_irq[irq].priority); |
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/* also set the polarity in this case */ |
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write_mmcr_word(SC520_INTPINPOL, |
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read_mmcr_word(SC520_INTPINPOL) | (1 << (pci_pin-4))); |
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} |
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/* register the pin */ |
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sc520_pci_ints[pci_pin] = irq; |
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return 0; /* OK */ |
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} |
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void pci_sc520_init(struct pci_controller *hose) |
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{ |
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hose->first_busno = 0; |
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hose->last_busno = 0xff; |
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/* System memory space */ |
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pci_set_region(hose->regions + 0, |
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SC520_PCI_MEMORY_BUS, |
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SC520_PCI_MEMORY_PHYS, |
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SC520_PCI_MEMORY_SIZE, |
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PCI_REGION_MEM | PCI_REGION_MEMORY); |
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/* PCI memory space */ |
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pci_set_region(hose->regions + 1, |
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SC520_PCI_MEM_BUS, |
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SC520_PCI_MEM_PHYS, |
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SC520_PCI_MEM_SIZE, |
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PCI_REGION_MEM); |
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/* ISA/PCI memory space */ |
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pci_set_region(hose->regions + 2, |
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SC520_ISA_MEM_BUS, |
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SC520_ISA_MEM_PHYS, |
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SC520_ISA_MEM_SIZE, |
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PCI_REGION_MEM); |
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/* PCI I/O space */ |
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pci_set_region(hose->regions + 3, |
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SC520_PCI_IO_BUS, |
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SC520_PCI_IO_PHYS, |
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SC520_PCI_IO_SIZE, |
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PCI_REGION_IO); |
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/* ISA/PCI I/O space */ |
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pci_set_region(hose->regions + 4, |
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SC520_ISA_IO_BUS, |
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SC520_ISA_IO_PHYS, |
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SC520_ISA_IO_SIZE, |
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PCI_REGION_IO); |
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hose->region_count = 5; |
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pci_setup_type1(hose, |
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SC520_REG_ADDR, |
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SC520_REG_DATA); |
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pci_register_hose(hose); |
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hose->last_busno = pci_hose_scan(hose); |
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/* enable target memory acceses on host brige */ |
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pci_write_config_word(0, PCI_COMMAND, |
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PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); |
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} |
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@ -0,0 +1,92 @@ |
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/*
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* (C) Copyright 2002 |
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* Daniel Engström, Omicron Ceti AB <daniel@omicron.se>. |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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/* stuff specific for the sc520, but independent of implementation */ |
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#include <common.h> |
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#include <asm/ic/ssi.h> |
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#include <asm/ic/sc520.h> |
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int ssi_set_interface(int freq, int lsb_first, int inv_clock, int inv_phase) |
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{ |
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u8 temp=0; |
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if (freq >= 8192) { |
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temp |= CTL_CLK_SEL_4; |
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} else if (freq >= 4096) { |
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temp |= CTL_CLK_SEL_8; |
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} else if (freq >= 2048) { |
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temp |= CTL_CLK_SEL_16; |
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} else if (freq >= 1024) { |
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temp |= CTL_CLK_SEL_32; |
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} else if (freq >= 512) { |
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temp |= CTL_CLK_SEL_64; |
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} else if (freq >= 256) { |
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temp |= CTL_CLK_SEL_128; |
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} else if (freq >= 128) { |
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temp |= CTL_CLK_SEL_256; |
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} else { |
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temp |= CTL_CLK_SEL_512; |
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} |
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if (!lsb_first) { |
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temp |= MSBF_ENB; |
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} |
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if (inv_clock) { |
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temp |= CLK_INV_ENB; |
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} |
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if (inv_phase) { |
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temp |= PHS_INV_ENB; |
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} |
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write_mmcr_byte(SC520_SSICTL, temp); |
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return 0; |
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} |
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u8 ssi_txrx_byte(u8 data) |
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{ |
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write_mmcr_byte(SC520_SSIXMIT, data); |
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while ((read_mmcr_byte(SC520_SSISTA)) & SSISTA_BSY); |
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write_mmcr_byte(SC520_SSICMD, SSICMD_CMD_SEL_XMITRCV); |
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while ((read_mmcr_byte(SC520_SSISTA)) & SSISTA_BSY); |
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return read_mmcr_byte(SC520_SSIRCV); |
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} |
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void ssi_tx_byte(u8 data) |
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{ |
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write_mmcr_byte(SC520_SSIXMIT, data); |
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while ((read_mmcr_byte(SC520_SSISTA)) & SSISTA_BSY); |
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write_mmcr_byte(SC520_SSICMD, SSICMD_CMD_SEL_XMIT); |
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} |
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u8 ssi_rx_byte(void) |
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{ |
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while ((read_mmcr_byte(SC520_SSISTA)) & SSISTA_BSY); |
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write_mmcr_byte(SC520_SSICMD, SSICMD_CMD_SEL_RCV); |
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while ((read_mmcr_byte(SC520_SSISTA)) & SSISTA_BSY); |
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return read_mmcr_byte(SC520_SSIRCV); |
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} |
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@ -0,0 +1,73 @@ |
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/*
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* (C) Copyright 2002 |
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* Daniel Engström, Omicron Ceti AB <daniel@omicron.se>. |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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/* stuff specific for the sc520, but independent of implementation */ |
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#include <common.h> |
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#include <asm/interrupt.h> |
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#include <asm/ic/sc520.h> |
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void reset_timer(void) |
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{ |
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write_mmcr_word(SC520_GPTMR0CNT, 0); |
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write_mmcr_word(SC520_GPTMR0CTL, 0x6001); |
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} |
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ulong get_timer(ulong base) |
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{ |
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/* fixme: 30 or 33 */ |
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return read_mmcr_word(SC520_GPTMR0CNT) / 33; |
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} |
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void set_timer(ulong t) |
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{ |
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/* FixMe: use two cascade coupled timers */ |
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write_mmcr_word(SC520_GPTMR0CTL, 0x4001); |
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write_mmcr_word(SC520_GPTMR0CNT, t*33); |
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write_mmcr_word(SC520_GPTMR0CTL, 0x6001); |
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} |
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void udelay(unsigned long usec) |
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{ |
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int m=0; |
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long u; |
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read_mmcr_word(SC520_SWTMRMILLI); |
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read_mmcr_word(SC520_SWTMRMICRO); |
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#if 0 |
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/* do not enable this line, udelay is used in the serial driver -> recursion */ |
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printf("udelay: %ld m.u %d.%d tm.tu %d.%d\n", usec, m, u, tm, tu); |
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#endif |
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while (1) { |
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m += read_mmcr_word(SC520_SWTMRMILLI); |
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u = read_mmcr_word(SC520_SWTMRMICRO) + (m * 1000); |
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if (usec <= u) { |
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break; |
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} |
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} |
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} |
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