^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * TURBOchannel bus services.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) Harald Koerfgen, 1998
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2001, 2003, 2005, 2006, 2018 Maciej W. Rozycki
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2005 James Simmons
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This file is subject to the terms and conditions of the GNU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * General Public License. See the file "COPYING" in the main
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * directory of this archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/tc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static struct tc_bus tc_bus = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) .name = "TURBOchannel",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * Probing for TURBOchannel modules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static void __init tc_bus_add_devices(struct tc_bus *tbus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) resource_size_t slotsize = tbus->info.slot_size << 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) resource_size_t extslotsize = tbus->ext_slot_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) resource_size_t slotaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) resource_size_t extslotaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) resource_size_t devsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) void __iomem *module;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct tc_dev *tdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) int i, slot, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u8 pattern[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) for (slot = 0; slot < tbus->num_tcslots; slot++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) slotaddr = tbus->slot_base + slot * slotsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) extslotaddr = tbus->ext_slot_base + slot * extslotsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) module = ioremap(slotaddr, slotsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) BUG_ON(!module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) offset = TC_OLDCARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) err |= tc_preadb(pattern + 0, module + offset + TC_PATTERN0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) err |= tc_preadb(pattern + 1, module + offset + TC_PATTERN1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) err |= tc_preadb(pattern + 2, module + offset + TC_PATTERN2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) err |= tc_preadb(pattern + 3, module + offset + TC_PATTERN3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) pattern[2] != 0xaa || pattern[3] != 0xff) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) offset = TC_NEWCARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) err |= tc_preadb(pattern + 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) module + offset + TC_PATTERN0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) err |= tc_preadb(pattern + 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) module + offset + TC_PATTERN1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) err |= tc_preadb(pattern + 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) module + offset + TC_PATTERN2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) err |= tc_preadb(pattern + 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) module + offset + TC_PATTERN3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) pattern[2] != 0xaa || pattern[3] != 0xff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Found a board, allocate it an entry in the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (!tdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) pr_err("tc%x: unable to allocate tc_dev\n", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) dev_set_name(&tdev->dev, "tc%x", slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) tdev->bus = tbus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) tdev->dev.parent = &tbus->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) tdev->dev.bus = &tc_bus_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) tdev->slot = slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* TURBOchannel has 34-bit DMA addressing (16GiB space). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) tdev->dma_mask = DMA_BIT_MASK(34);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) tdev->dev.dma_mask = &tdev->dma_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tdev->dev.coherent_dma_mask = DMA_BIT_MASK(34);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) for (i = 0; i < 8; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) tdev->firmware[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) readb(module + offset + TC_FIRM_VER + 4 * i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) tdev->vendor[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) readb(module + offset + TC_VENDOR + 4 * i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) tdev->name[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) readb(module + offset + TC_MODULE + 4 * i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) tdev->firmware[8] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) tdev->vendor[8] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) tdev->name[8] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) pr_info("%s: %s %s %s\n", dev_name(&tdev->dev), tdev->vendor,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) tdev->name, tdev->firmware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) devsize = readb(module + offset + TC_SLOT_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) devsize <<= 22;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (devsize <= slotsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) tdev->resource.start = slotaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) tdev->resource.end = slotaddr + devsize - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) } else if (devsize <= extslotsize) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) tdev->resource.start = extslotaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) tdev->resource.end = extslotaddr + devsize - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) pr_err("%s: Cannot provide slot space "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) "(%ldMiB required, up to %ldMiB supported)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) dev_name(&tdev->dev), (long)(devsize >> 20),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) (long)(max(slotsize, extslotsize) >> 20));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) kfree(tdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) tdev->resource.name = tdev->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) tdev->resource.flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) tc_device_get_irq(tdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (device_register(&tdev->dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) put_device(&tdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) list_add_tail(&tdev->node, &tbus->devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) iounmap(module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * The main entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static int __init tc_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* Initialize the TURBOchannel bus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (tc_bus_get_info(&tc_bus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) INIT_LIST_HEAD(&tc_bus.devices);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) dev_set_name(&tc_bus.dev, "tc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (device_register(&tc_bus.dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) goto out_err_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (tc_bus.info.slot_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) pr_info("tc: TURBOchannel rev. %d at %d.%d MHz "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) "(with%s parity)\n", tc_bus.info.revision,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) tc_clock / 10, tc_clock % 10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) tc_bus.info.parity ? "" : "out");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) tc_bus.resource[0].start = tc_bus.slot_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) tc_bus.resource[0].end = tc_bus.slot_base +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) (tc_bus.info.slot_size << 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) tc_bus.num_tcslots - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) tc_bus.resource[0].name = tc_bus.name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) tc_bus.resource[0].flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (request_resource(&iomem_resource,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) &tc_bus.resource[0]) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) pr_err("tc: Cannot reserve resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) goto out_err_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (tc_bus.ext_slot_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) tc_bus.resource[1].start = tc_bus.ext_slot_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) tc_bus.resource[1].end = tc_bus.ext_slot_base +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) tc_bus.ext_slot_size *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) tc_bus.num_tcslots - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) tc_bus.resource[1].name = tc_bus.name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) tc_bus.resource[1].flags = IORESOURCE_MEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (request_resource(&iomem_resource,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) &tc_bus.resource[1]) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) pr_err("tc: Cannot reserve resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) goto out_err_resource;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) tc_bus_add_devices(&tc_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) out_err_resource:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) release_resource(&tc_bus.resource[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) out_err_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) put_device(&tc_bus.dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) subsys_initcall(tc_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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