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Diffstat (limited to 'board/MAI/AmigaOneG3SE/articiaS_pci.c')
-rw-r--r--board/MAI/AmigaOneG3SE/articiaS_pci.c573
1 files changed, 573 insertions, 0 deletions
diff --git a/board/MAI/AmigaOneG3SE/articiaS_pci.c b/board/MAI/AmigaOneG3SE/articiaS_pci.c
new file mode 100644
index 0000000..774c32d
--- /dev/null
+++ b/board/MAI/AmigaOneG3SE/articiaS_pci.c
@@ -0,0 +1,573 @@
+/*
+ * (C) Copyright 2002
+ * Hyperion Entertainment, Hans-JoergF@hyperion-entertainment.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 <pci.h>
+#include "memio.h"
+#include "articiaS.h"
+
+//#define ARTICIA_PCI_DEBUG
+
+#ifdef ARTICIA_PCI_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+struct pci_controller articiaS_hose;
+
+long irq_alloc(long wanted);
+
+static pci_dev_t pci_hose_find_class(struct pci_controller *hose, int bus, short find_class, int index);
+static int articiaS_init_vga(void);
+static void pci_cfgfunc_dummy(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table);
+unsigned char pci_irq_alloc(void);
+
+extern void via_cfgfunc_via686(struct pci_controller * host, pci_dev_t dev, struct pci_config_table *table);
+extern void via_cfgfunc_ide_init(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table);
+extern void via_init_irq_routing(uint8 []);
+extern void via_init_afterscan(void);
+
+#define cfgfunc_via686 1
+#define cfgfunc_dummy 2
+#define cfgfunc_ide_init 3
+
+static struct pci_config_table config_table[] =
+{
+ {
+ 0x1106, PCI_ANY_ID, PCI_CLASS_BRIDGE_ISA, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ (void *)cfgfunc_via686, {0, 0, 0}
+ },
+ {
+ 0x1106, PCI_ANY_ID, PCI_ANY_ID, 0,7,4,
+ (void *)cfgfunc_dummy, {0,0,0}
+ },
+ {
+ 0x1106, 0x3068, PCI_ANY_ID, 0, 7, PCI_ANY_ID,
+ (void *)cfgfunc_dummy, {0,0,0}
+ },
+ {
+ 0x1106, PCI_ANY_ID, PCI_ANY_ID, 0,7,1,
+ (void *)cfgfunc_ide_init, {0,0,0}
+ },
+ {
+ 0,
+ }
+};
+
+
+void pci_cfgfunc_dummy(struct pci_controller *host, pci_dev_t dev, struct pci_config_table *table)
+{
+
+
+}
+
+unsigned long irq_penalties[16] =
+{
+ 1000, /* 0:timer */
+ 1000, /* 1:keyboard */
+ 1000, /* 2:cascade */
+ 50, /* 3:serial (COM2) */
+ 50, /* 4:serial (COM1) */
+ 4, /* 5:USB2 */
+ 100, /* 6:floppy */
+ 3, /* 7:parallel */
+ 50, /* 8:AC97/MC97 */
+ 0, /* 9: */
+ 3, /* 10:: */
+ 0, /* 11: */
+ 3, /* 12: USB1 */
+ 0, /* 13: */
+ 100, /* 14: ide0 */
+ 100, /* 15: ide1 */
+};
+
+
+/*
+ * The following defines a hard-coded interrupt mapping for the
+ * know devices on the board.
+ * If a device isn't found here, assumed to be a device that's
+ * plugged into a PCI or AGP slot
+ * NOTE: This table is machine dependant.
+ */
+
+struct pci_irq_fixup_table
+{
+ uint8 bus; /* Bus number */
+ uint8 device; /* Device number */
+ uint8 func; /* Function number */
+ uint8 interrupt; /* Interrupt to use (0xff to disable) */
+};
+
+struct pci_irq_fixup_table fixuptab [] =
+{
+ { 0, 0, 0, 0xff}, /* Articia S host bridge */
+ { 0, 1, 0, 0xff}, /* Articia S AGP bridge */
+// { 0, 6, 0, 0x05}, /* 3COM ethernet */
+ { 0, 7, 0, 0xff}, /* VIA southbridge */
+ { 0, 7, 1, 0x0e}, /* IDE controller in legacy mode */
+// { 0, 7, 2, 0x05}, /* First USB controller */
+// { 0, 7, 3, 0x0c}, /* Second USB controller (shares interrupt with ethernet) */
+ { 0, 7, 4, 0xff}, /* ACPI Power Management */
+// { 0, 7, 5, 0x08}, /* AC97 */
+// { 0, 7, 6, 0x08}, /* MC97 */
+ { 0xff, 0xff, 0xff, 0xff}
+};
+
+
+/*
+ * This table maps IRQ's to PCI interrupts
+ */
+
+uint8 pci_intmap[4] = {0, 0, 0, 0};
+
+/*
+ * Map PCI slots to interrupt routings
+ * This table lists the device number assigned to a card inserted
+ * into the slot, along with a permutation for the slot's IRQ routing.
+ * NOTE: This table is machine dependant.
+ */
+
+struct pci_slot_irq_routing
+{
+ uint8 bus;
+ uint8 device;
+
+ uint8 ints[4];
+};
+
+struct pci_slot_irq_routing amigaone_pci_routing[] =
+{
+ {0, 8, {0, 1, 2, 3}}, /* Slot 1 (left of riser slot) */
+ {0, 9, {1, 2, 3, 0}}, /* Slot 2 (middle slot) */
+ {0, 10, {2, 3, 0, 1}}, /* Slot 3 (leftmost slot) */
+ {1, 0, {1, 0, 2, 3}}, /* AGP slot (only IRQA and IRQB) */
+ {1, 1, {1, 2, 3, 0}}, /* PCI slot on AGP bus */
+ {0, 6, {3, 3, 3, 3}}, /* On board ethernet */
+ {0, 7, {0, 1, 2, 3}}, /* Southbridge */
+ {0xff, 0, {0, 0, 0, 0}}
+};
+
+void articiaS_pci_irq_init(void)
+{
+ char *s;
+
+ s = getenv("pci_irqa");
+ if (s)
+ pci_intmap[0] = simple_strtoul (s, NULL, 10);
+ else
+ pci_intmap[0] = pci_irq_alloc();
+
+ s = getenv("pci_irqb");
+ if (s)
+ pci_intmap[1] = simple_strtoul (s, NULL, 10);
+ else
+ pci_intmap[1] = pci_irq_alloc();
+
+ s = getenv("pci_irqc");
+ if (s)
+ pci_intmap[2] = simple_strtoul (s, NULL, 10);
+ else
+ pci_intmap[2] = pci_irq_alloc();
+
+ s = getenv("pci_irqd");
+ if (s)
+ pci_intmap[3] = simple_strtoul (s, NULL, 10);
+ else
+ pci_intmap[3] = pci_irq_alloc();
+}
+
+
+unsigned char pci_irq_alloc(void)
+{
+ int i;
+ int interrupt = 10;
+ unsigned long min_penalty = 1000;
+
+ /* Search for the minimal penalty, favoring interrupts at the end */
+ for (i = 0; i < 16; i++)
+ {
+ if (irq_penalties[i] <= min_penalty)
+ {
+ interrupt = i;
+ min_penalty = irq_penalties[i];
+ }
+ }
+
+ PRINTF("pci_irq_alloc: Minimal penalty is %ld for %d\n", min_penalty, interrupt);
+
+ irq_penalties[interrupt]++;
+
+ return interrupt;
+}
+
+
+void articiaS_pci_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
+{
+ int8 bus, device, func, pin, line;
+ int i;
+
+ bus = PCI_BUS(dev);
+ device = PCI_DEV(dev);
+ func = PCI_FUNC(dev);
+
+ PRINTF("Fixup irq of %d:%d.%d\n", bus, device, func);
+
+ /* Search for the device in the table */
+ for (i = 0; fixuptab[i].bus != 0xff; i++)
+ {
+ if (bus == fixuptab[i].bus && device == fixuptab[i].device && func == fixuptab[i].func)
+ {
+ /* If the device needs an interrupt, write it */
+ if (fixuptab[i].interrupt != 0xff)
+ {
+ PRINTF("Assigning IRQ %d (fixed)\n", fixuptab[i].interrupt);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, fixuptab[i].interrupt);
+ }
+ else
+ {
+ /* Otherwise, see if it wants an interrupt, and disable it if needed */
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ if (pin)
+ {
+ PRINTF("Disabling IRQ\n");
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 0xff);
+ }
+ }
+
+ return;
+ }
+ }
+
+ /* If we get here, we have another PCI device in a slot... find the appropriate IRQ */
+
+ /* Find matching pin */
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin--;
+
+ /* Search for it's map */
+ for (i = 0; amigaone_pci_routing[i].bus != 0xff; i++)
+ {
+ if (bus == amigaone_pci_routing[i].bus && device == amigaone_pci_routing[i].device)
+ {
+ line = pci_intmap[amigaone_pci_routing[i].ints[pin]];
+ PRINTF("Assigning IRQ %d (pin %d)\n", line, pin);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, line);
+ return;
+ }
+ }
+
+ PRINTF("Unkonwn PCI device found\n");
+}
+
+void articiaS_pci_init (void)
+{
+ int i;
+ char *s;
+
+ PRINTF("atriciaS_pci_init\n");
+
+ // Why aren't these relocated??
+ for (i=0; config_table[i].config_device; i++)
+ {
+ switch((int)config_table[i].config_device)
+ {
+ case cfgfunc_via686: config_table[i].config_device = via_cfgfunc_via686; break;
+ case cfgfunc_dummy: config_table[i].config_device = pci_cfgfunc_dummy; break;
+ case cfgfunc_ide_init: config_table[i].config_device = via_cfgfunc_ide_init; break;
+ default: PRINTF("Error: Unknown constant\n");
+ }
+ }
+
+ articiaS_hose.first_busno = 0;
+ articiaS_hose.last_busno = 0xff;
+ articiaS_hose.config_table = config_table;
+ articiaS_hose.fixup_irq = articiaS_pci_fixup_irq;
+
+ articiaS_pci_irq_init();
+
+ /* System memory */
+ pci_set_region(articiaS_hose.regions + 0,
+ ARTICIAS_SYS_BUS,
+ ARTICIAS_SYS_PHYS,
+ ARTICIAS_SYS_MAXSIZE,
+ PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+ /* PCI memory space */
+ pci_set_region(articiaS_hose.regions + 1,
+ ARTICIAS_PCI_BUS,
+ ARTICIAS_PCI_PHYS,
+ ARTICIAS_PCI_MAXSIZE,
+ PCI_REGION_MEM);
+
+ /* PCI io space */
+ pci_set_region(articiaS_hose.regions + 2,
+ ARTICIAS_PCIIO_BUS,
+ ARTICIAS_PCIIO_PHYS,
+ ARTICIAS_PCIIO_MAXSIZE,
+ PCI_REGION_IO);
+
+ /* PCI/ISA io space */
+ pci_set_region(articiaS_hose.regions + 3,
+ ARTICIAS_ISAIO_BUS,
+ ARTICIAS_ISAIO_PHYS,
+ ARTICIAS_ISAIO_MAXSIZE,
+ PCI_REGION_IO);
+
+
+
+ articiaS_hose.region_count = 4;
+
+ pci_setup_indirect(&articiaS_hose, ARTICIAS_PCI_CFGADDR, ARTICIAS_PCI_CFGDATA);
+ PRINTF("Registering articia hose...\n");
+ pci_register_hose(&articiaS_hose);
+ PRINTF("Enabling AGP...\n");
+ pci_write_config_byte(PCI_BDF(0,0,0), 0x58, 0x01);
+ PRINTF("Scanning bus...\n");
+ articiaS_hose.last_busno = pci_hose_scan(&articiaS_hose);
+
+ via_init_irq_routing(pci_intmap);
+
+ PRINTF("After-Scan results:\n");
+ PRINTF("Bus range: %d - %d\n", articiaS_hose.first_busno , articiaS_hose.last_busno);
+
+ via_init_afterscan();
+
+ pci_write_config_byte(PCI_BDF(0,1,0), PCI_INTERRUPT_LINE, 0xFF);
+
+ s = getenv("as_irq");
+ if (s)
+ {
+ pci_write_config_byte(PCI_BDF(0,0,0), PCI_INTERRUPT_LINE, simple_strtoul (s, NULL, 10));
+ }
+
+ s = getenv("x86_run_bios");
+ if (!s || (s && strcmp(s, "on")==0))
+ {
+ if (articiaS_init_vga() == -1)
+ {
+ /* If the VGA didn't init and we have stdout set to VGA, reset to serial */
+/* s = getenv("stdout"); */
+/* if (s && strcmp(s, "vga") == 0) */
+/* { */
+/* setenv("stdout", "serial"); */
+/* } */
+ }
+ }
+ pci_write_config_byte(PCI_BDF(0,1,0), PCI_INTERRUPT_LINE, 0xFF);
+
+}
+
+pci_dev_t pci_hose_find_class(struct pci_controller *hose, int bus, short find_class, int index)
+{
+ unsigned int sub_bus, found_multi=0;
+ unsigned short vendor, class;
+ unsigned char header_type;
+ pci_dev_t dev;
+ u8 c1, c2;
+
+ sub_bus = bus;
+
+ for (dev = PCI_BDF(bus,0,0);
+ dev < PCI_BDF(bus,PCI_MAX_PCI_DEVICES-1,PCI_MAX_PCI_FUNCTIONS-1);
+ dev += PCI_BDF(0,0,1))
+ {
+ if ( dev == PCI_BDF(hose->first_busno,0,0) )
+ continue;
+
+ if (PCI_FUNC(dev) && !found_multi)
+ continue;
+
+ pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
+
+ pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor);
+
+ if (vendor != 0xffff && vendor != 0x0000)
+ {
+
+ if (!PCI_FUNC(dev))
+ found_multi = header_type & 0x80;
+ pci_hose_read_config_byte(hose, dev, 0x0B, &c1);
+ pci_hose_read_config_byte(hose, dev, 0x0A, &c2);
+ class = c1<<8 | c2;
+ //printf("At %02x:%02x:%02x: class %x\n",
+ // PCI_BUS(dev), PCI_DEV(dev), PCI_FUNC(dev), class);
+ if (class == find_class)
+ {
+ if (index == 0)
+ return dev;
+ else index--;
+ }
+ }
+ }
+
+ return ~0;
+}
+
+
+/*
+ * For a given bus number, find the bridge on this hose that provides this
+ * bus number. The function scans for bridges and peeks config space offset
+ * 0x19 (PCI_SECONDARY_BUS).
+ */
+pci_dev_t pci_find_bridge_for_bus(struct pci_controller *hose, int busnr)
+{
+ pci_dev_t dev;
+ int bus;
+ unsigned int found_multi=0;
+ unsigned char header_type;
+ unsigned short vendor;
+ unsigned char secondary_bus;
+
+ if (hose == NULL) hose = &articiaS_hose;
+
+ if (busnr < hose->first_busno || busnr > hose->last_busno) return PCI_ANY_ID; // Not in range
+
+ /*
+ * The bridge must be on a lower bus number
+ */
+ for (bus = hose->first_busno; bus < busnr; bus++)
+ {
+ for (dev = PCI_BDF(bus,0,0);
+ dev < PCI_BDF(bus,PCI_MAX_PCI_DEVICES-1,PCI_MAX_PCI_FUNCTIONS-1);
+ dev += PCI_BDF(0,0,1))
+ {
+ if ( dev == PCI_BDF(hose->first_busno,0,0) )
+ continue;
+
+ if (PCI_FUNC(dev) && !found_multi)
+ continue;
+
+ pci_hose_read_config_byte(hose, dev, PCI_HEADER_TYPE, &header_type);
+
+ pci_hose_read_config_word(hose, dev, PCI_VENDOR_ID, &vendor);
+
+ if (vendor != 0xffff && vendor != 0x0000)
+ {
+
+ if (!PCI_FUNC(dev))
+ found_multi = header_type & 0x80;
+ if (header_type == 1) // Bridge device header
+ {
+ pci_hose_read_config_byte(hose, dev, PCI_SECONDARY_BUS, &secondary_bus);
+ if ((int)secondary_bus == busnr) return dev;
+ }
+
+ }
+ }
+ }
+ return PCI_ANY_ID;
+}
+
+static short classes[] =
+{
+ PCI_CLASS_DISPLAY_VGA,
+ PCI_CLASS_DISPLAY_XGA,
+ PCI_CLASS_DISPLAY_3D,
+ PCI_CLASS_DISPLAY_OTHER,
+ ~0
+};
+
+extern int execute_bios(pci_dev_t gr_dev, void *);
+
+pci_dev_t video_dev;
+
+int articiaS_init_vga (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ extern void shutdown_bios(void);
+ pci_dev_t dev = ~0;
+ int busnr = 0;
+ int classnr = 0;
+
+ video_dev = PCI_ANY_ID;
+
+ printf("VGA: ");
+
+ PRINTF("Trying to initialize x86 VGA Card(s)\n");
+
+ while (dev == ~0)
+ {
+ PRINTF("Searching for class 0x%x on bus %d\n", classes[classnr], busnr);
+ /* Find the first of this class on this bus */
+ dev = pci_hose_find_class(&articiaS_hose, busnr, classes[classnr], 0);
+ if (dev != ~0) break;
+ busnr++;
+ if (busnr > articiaS_hose.last_busno)
+ {
+ busnr = 0;
+ classnr ++;
+ if (classes[classnr] == ~0)
+ {
+ printf("NOT PRESENT\n");
+ return -1;
+ }
+ }
+ }
+
+ /*
+ * If we get here we have found the first graphics card.
+ * If the bus number is not 0, then it is probably behind a bridge, and the
+ * bridge needs to be told to forward VGA access.
+ */
+
+ if (PCI_BUS(dev) != 0)
+ {
+ pci_dev_t bridge;
+ PRINTF("Behind bridge, looking for bridge\n");
+ bridge = pci_find_bridge_for_bus(&articiaS_hose, PCI_BUS(dev));
+ if (dev != PCI_ANY_ID)
+ {
+ unsigned char agp_control_0;
+ PRINTF("Got the bridge at %02x:%02x:%02x\n",
+ PCI_BUS(bridge), PCI_DEV(bridge), PCI_FUNC(bridge));
+ pci_hose_read_config_byte(&articiaS_hose, bridge, 0x3E, &agp_control_0);
+ agp_control_0 |= 0x18;
+ pci_hose_write_config_byte(&articiaS_hose, bridge, 0x3E, agp_control_0);
+ PRINTF("Configured for VGA forwarding\n");
+ }
+ }
+
+ /*
+ * Now try to run the bios
+ */
+
+ if (execute_bios(dev, gd->relocaddr))
+ {
+ printf("OK\n");
+ video_dev = dev;
+ }
+ else
+ {
+ printf("ERROR\n");
+ }
+
+ PRINTF("Done scanning.\n");
+
+ shutdown_bios();
+
+ if (dev == PCI_ANY_ID) return -1;
+ else return 0;
+
+}
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