Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2004 Nick Barker <nick.barker9@btinternet.com> |
| 3 | * |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation; either version 2 of |
| 8 | * the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
Ronald G. Minnich | 9442591 | 2005-11-22 16:47:40 +0000 | [diff] [blame] | 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, |
| 18 | * MA 02110-1301 USA |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 19 | */ |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 20 | /* (C) Copyright 2005 Nick Barker <nick.barker@btinternet.com |
| 21 | brought into line with the current architecture of LinuxBios */ |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 22 | |
| 23 | |
| 24 | #include <arch/io.h> |
| 25 | #include <device/device.h> |
| 26 | #include <device/pci.h> |
| 27 | #include <device/pci_ops.h> |
| 28 | #include <device/pci_ids.h> |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 29 | #include <console/console.h> |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 30 | #include <device/cardbus.h> |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 31 | #include "rl5c476.h" |
| 32 | #include "chip.h" |
| 33 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 34 | static int enable_cf_boot = 0; |
| 35 | static unsigned int cf_base; |
| 36 | |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 37 | static void udelay(int i){ |
| 38 | for(; i > 0 ; i--) |
| 39 | inb(0x80); |
| 40 | |
| 41 | } |
| 42 | |
Eric Biederman | dbec2d4 | 2004-10-21 10:44:08 +0000 | [diff] [blame] | 43 | static void rl5c476_init(device_t dev) |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 44 | { |
| 45 | //unsigned char enables; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 46 | pc16reg_t *pc16; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 47 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 48 | unsigned char *base; |
| 49 | |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 50 | /* cardbus controller function 1 for CF Socket */ |
Eric Biederman | dbec2d4 | 2004-10-21 10:44:08 +0000 | [diff] [blame] | 51 | printk_debug("rl5c476 init\n"); |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 52 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 53 | printk_debug("CF Base = %0x\n",cf_base); |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 54 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 55 | /* misc control register */ |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 56 | pci_write_config16(dev,0x82,0x00a0); |
| 57 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 58 | /* set up second slot as compact flash port if asked to do so */ |
| 59 | if( enable_cf_boot && (PCI_FUNC(dev->path.u.pci.devfn) == 1)){ |
| 60 | |
| 61 | /* make sure isa interrupts are enabled */ |
| 62 | pci_write_config16(dev,0x3e,0x0780); |
| 63 | |
| 64 | /* pick up where 16 bit card control structure is (0x800 bytes into config structure) */ |
| 65 | base = (unsigned char *)pci_read_config32(dev,0x10); |
| 66 | pc16 = (pc16reg_t *)(base + 0x800); |
| 67 | |
| 68 | /* disable memory and io windows and turn off socket power */ |
| 69 | pc16->pwctrl = 0; |
| 70 | |
| 71 | /* disable irq lines */ |
| 72 | pc16->igctrl = 0; |
| 73 | |
| 74 | /* disable memory and I/O windows */ |
| 75 | pc16->awinen = 0; |
| 76 | |
| 77 | /* reset card, configure for I/O and set IRQ line */ |
| 78 | pc16->igctrl = 0x69; |
| 79 | |
| 80 | // set io window 0 for 1e0 - 1ef |
| 81 | /* note this now sets CF up on a contiguous I/O window of 16 bytes, 0x1e0 to 0x1ef |
| 82 | Be warned that this is not a standard IDE address as automatically detected by the likes |
| 83 | of Filo, and would need patching to recognise these addresses as an IDE drive */ |
| 84 | /* an earlier version of this driver set up 2 io windows to emulate the expected addresses |
| 85 | for IDE2, however the pcmcia package within Linux then could not re-initiailse the |
| 86 | device as it tried to take control of it. So I belive it is easier to patch Filo or the like |
| 87 | to pick up this drive rather than playing silly games as the kernel tries to boot. |
| 88 | */ |
| 89 | pc16->iostl0 = 0xe0; |
| 90 | pc16->iosth0 = 1; |
| 91 | |
| 92 | pc16->iospl0 = 0xef; |
| 93 | pc16->iosph0 = 1; |
| 94 | |
| 95 | pc16->ioffl0 = 0; |
| 96 | pc16->ioffh0 = 0; |
| 97 | |
| 98 | // clear window 1 |
| 99 | pc16->iostl1 = 0; |
| 100 | pc16->iosth1 = 0; |
| 101 | |
| 102 | pc16->iospl1 = 0; |
| 103 | pc16->iosph1 = 0; |
| 104 | |
| 105 | pc16->ioffl1 = 0x0; |
| 106 | pc16->ioffh1 = 0; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 107 | |
| 108 | |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 109 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 110 | // set up CF config window |
| 111 | pc16->smpga0 = cf_base>>24; |
| 112 | pc16->smsth0 = (cf_base>>20)&0x0f; |
| 113 | pc16->smstl0 = (cf_base>>12)&0xff; |
| 114 | pc16->smsph0 = ((cf_base>>20)&0x0f) | 0x80; |
| 115 | pc16->smspl0 = (cf_base>>12)&0xff; |
| 116 | pc16->moffl0 = 0; |
| 117 | pc16->moffh0 = 0x40; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 118 | |
| 119 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 120 | // set I/O width for Auto Data width |
| 121 | pc16->ioctrl = 0x22; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 122 | |
| 123 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 124 | // enable I/O window 0 and 1 |
| 125 | pc16->awinen = 0xc1; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 126 | |
| 127 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 128 | pc16->miscc1 = 1; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 129 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 130 | // apply power and enable outputs |
| 131 | pc16->pwctrl = 0xb0; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 132 | |
| 133 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 134 | // delay could be optimised, but this works |
| 135 | udelay(100000); |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 136 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 137 | pc16->igctrl = 0x69; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 138 | |
| 139 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 140 | // 16 bit CF always have first config byte at 0x200 into Config structure, |
| 141 | // but CF+ May Not according to spec - should locate through reading tuple data, |
| 142 | // but this will do for now !!! |
| 143 | unsigned char *cptr; |
| 144 | cptr = (unsigned char *)(cf_base + 0x200); |
| 145 | printk_debug("CF Config = %x\n",*cptr); |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 146 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 147 | // set CF to decode 16 IO bytes on any 16 byte boundary - rely on the io |
| 148 | // windows of the bridge set up above to map those bytes into the |
| 149 | // addresses for ide controller 3 (0x1e8 - 0x1ef and 0x3ed - 0x3ee) |
| 150 | *cptr = 0x41; |
| 151 | } |
| 152 | |
| 153 | } |
| 154 | |
| 155 | void rl5c476_read_resources(device_t dev) |
| 156 | { |
| 157 | |
| 158 | struct resource *resource; |
| 159 | |
| 160 | /* for cf socket we need an extra memory window for the control structure of the cf itself */ |
| 161 | if( enable_cf_boot && (PCI_FUNC(dev->path.u.pci.devfn) == 1)){ |
| 162 | resource = new_resource(dev,1); /* fake index as it isn't in pci config space */ |
| 163 | resource->flags |= IORESOURCE_MEM ; |
| 164 | resource->size = 0x1000; |
| 165 | resource->align = resource->gran = 12; |
| 166 | resource->limit= 0xffff0000; |
| 167 | //compute_allocate_resource(&dev->link[0],resource,resource->flags,resource->flags); |
| 168 | } |
| 169 | cardbus_read_resources(dev); |
| 170 | |
| 171 | } |
| 172 | |
| 173 | void rl5c476_set_resources(device_t dev) |
| 174 | { |
| 175 | |
| 176 | struct resource *resource; |
| 177 | printk_debug("%s In set resources \n",dev_path(dev)); |
| 178 | if( enable_cf_boot && (PCI_FUNC(dev->path.u.pci.devfn) == 1)){ |
| 179 | resource = find_resource(dev,1); |
| 180 | if( !(resource->flags & IORESOURCE_STORED) ){ |
| 181 | resource->flags |= IORESOURCE_STORED ; |
| 182 | compute_allocate_resource(&dev->link[0],resource,resource->flags,resource->flags); |
| 183 | printk_debug("%s 1 ==> %x\n",dev_path(dev),resource->base); |
| 184 | cf_base = resource->base; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | pci_dev_set_resources(dev); |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 189 | |
| 190 | } |
| 191 | |
Eric Biederman | dbec2d4 | 2004-10-21 10:44:08 +0000 | [diff] [blame] | 192 | static struct device_operations ricoh_rl5c476_ops = { |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 193 | .read_resources = rl5c476_read_resources, |
| 194 | .set_resources = rl5c476_set_resources, |
| 195 | .enable_resources = cardbus_enable_resources, |
| 196 | .init = rl5c476_init, |
| 197 | .scan_bus = cardbus_scan_bridge, |
Eric Biederman | dbec2d4 | 2004-10-21 10:44:08 +0000 | [diff] [blame] | 198 | }; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 199 | |
Eric Biederman | dbec2d4 | 2004-10-21 10:44:08 +0000 | [diff] [blame] | 200 | static struct pci_driver ricoh_rl5c476_driver __pci_driver = { |
| 201 | .ops = &ricoh_rl5c476_ops, |
| 202 | .vendor = PCI_VENDOR_ID_RICOH, |
| 203 | .device = PCI_DEVICE_ID_RICOH_RL5C476, |
| 204 | }; |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 205 | |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 206 | void southbridge_init(device_t dev) |
| 207 | { |
| 208 | |
| 209 | struct southbridge_ricoh_rl5c476_config *conf = dev->chip_info; |
| 210 | enable_cf_boot = conf->enable_cf; |
| 211 | |
| 212 | } |
| 213 | |
| 214 | struct chip_operations southbridge_ricoh_rl5c476_ops = { |
Eric Biederman | 018d8dd | 2004-11-04 11:04:33 +0000 | [diff] [blame] | 215 | CHIP_NAME("RICOH RL5C476") |
Ronald G. Minnich | 43225bc | 2005-11-22 00:07:02 +0000 | [diff] [blame] | 216 | .enable_dev = southbridge_init, |
Ronald G. Minnich | 02fa3b2 | 2004-10-06 17:33:54 +0000 | [diff] [blame] | 217 | }; |