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- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2011 Cavium Networks
- * Copyright (C) 2008 Wind River Systems
- */
- #include <linux/init.h>
- #include <linux/irq.h>
- #include <linux/i2c.h>
- #include <linux/usb.h>
- #include <linux/dma-mapping.h>
- #include <linux/module.h>
- #include <linux/slab.h>
- #include <linux/platform_device.h>
- #include <linux/of_platform.h>
- #include <linux/of_fdt.h>
- #include <linux/libfdt.h>
- #include <asm/octeon/octeon.h>
- #include <asm/octeon/cvmx-rnm-defs.h>
- #include <asm/octeon/cvmx-helper.h>
- #include <asm/octeon/cvmx-helper-board.h>
- /* Octeon Random Number Generator. */
- static int __init octeon_rng_device_init(void)
- {
- struct platform_device *pd;
- int ret = 0;
- struct resource rng_resources[] = {
- {
- .flags = IORESOURCE_MEM,
- .start = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS),
- .end = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf
- }, {
- .flags = IORESOURCE_MEM,
- .start = cvmx_build_io_address(8, 0),
- .end = cvmx_build_io_address(8, 0) + 0x7
- }
- };
- pd = platform_device_alloc("octeon_rng", -1);
- if (!pd) {
- ret = -ENOMEM;
- goto out;
- }
- ret = platform_device_add_resources(pd, rng_resources,
- ARRAY_SIZE(rng_resources));
- if (ret)
- goto fail;
- ret = platform_device_add(pd);
- if (ret)
- goto fail;
- return ret;
- fail:
- platform_device_put(pd);
- out:
- return ret;
- }
- device_initcall(octeon_rng_device_init);
- #ifdef CONFIG_USB
- static int __init octeon_ehci_device_init(void)
- {
- struct platform_device *pd;
- int ret = 0;
- struct resource usb_resources[] = {
- {
- .flags = IORESOURCE_MEM,
- }, {
- .flags = IORESOURCE_IRQ,
- }
- };
- /* Only Octeon2 has ehci/ohci */
- if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
- return 0;
- if (octeon_is_simulation() || usb_disabled())
- return 0; /* No USB in the simulator. */
- pd = platform_device_alloc("octeon-ehci", 0);
- if (!pd) {
- ret = -ENOMEM;
- goto out;
- }
- usb_resources[0].start = 0x00016F0000000000ULL;
- usb_resources[0].end = usb_resources[0].start + 0x100;
- usb_resources[1].start = OCTEON_IRQ_USB0;
- usb_resources[1].end = OCTEON_IRQ_USB0;
- ret = platform_device_add_resources(pd, usb_resources,
- ARRAY_SIZE(usb_resources));
- if (ret)
- goto fail;
- ret = platform_device_add(pd);
- if (ret)
- goto fail;
- return ret;
- fail:
- platform_device_put(pd);
- out:
- return ret;
- }
- device_initcall(octeon_ehci_device_init);
- static int __init octeon_ohci_device_init(void)
- {
- struct platform_device *pd;
- int ret = 0;
- struct resource usb_resources[] = {
- {
- .flags = IORESOURCE_MEM,
- }, {
- .flags = IORESOURCE_IRQ,
- }
- };
- /* Only Octeon2 has ehci/ohci */
- if (!OCTEON_IS_MODEL(OCTEON_CN63XX))
- return 0;
- if (octeon_is_simulation() || usb_disabled())
- return 0; /* No USB in the simulator. */
- pd = platform_device_alloc("octeon-ohci", 0);
- if (!pd) {
- ret = -ENOMEM;
- goto out;
- }
- usb_resources[0].start = 0x00016F0000000400ULL;
- usb_resources[0].end = usb_resources[0].start + 0x100;
- usb_resources[1].start = OCTEON_IRQ_USB0;
- usb_resources[1].end = OCTEON_IRQ_USB0;
- ret = platform_device_add_resources(pd, usb_resources,
- ARRAY_SIZE(usb_resources));
- if (ret)
- goto fail;
- ret = platform_device_add(pd);
- if (ret)
- goto fail;
- return ret;
- fail:
- platform_device_put(pd);
- out:
- return ret;
- }
- device_initcall(octeon_ohci_device_init);
- #endif /* CONFIG_USB */
- static struct of_device_id __initdata octeon_ids[] = {
- { .compatible = "simple-bus", },
- { .compatible = "cavium,octeon-6335-uctl", },
- { .compatible = "cavium,octeon-3860-bootbus", },
- { .compatible = "cavium,mdio-mux", },
- { .compatible = "gpio-leds", },
- {},
- };
- static bool __init octeon_has_88e1145(void)
- {
- return !OCTEON_IS_MODEL(OCTEON_CN52XX) &&
- !OCTEON_IS_MODEL(OCTEON_CN6XXX) &&
- !OCTEON_IS_MODEL(OCTEON_CN56XX);
- }
- static void __init octeon_fdt_set_phy(int eth, int phy_addr)
- {
- const __be32 *phy_handle;
- const __be32 *alt_phy_handle;
- const __be32 *reg;
- u32 phandle;
- int phy;
- int alt_phy;
- const char *p;
- int current_len;
- char new_name[20];
- phy_handle = fdt_getprop(initial_boot_params, eth, "phy-handle", NULL);
- if (!phy_handle)
- return;
- phandle = be32_to_cpup(phy_handle);
- phy = fdt_node_offset_by_phandle(initial_boot_params, phandle);
- alt_phy_handle = fdt_getprop(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
- if (alt_phy_handle) {
- u32 alt_phandle = be32_to_cpup(alt_phy_handle);
- alt_phy = fdt_node_offset_by_phandle(initial_boot_params, alt_phandle);
- } else {
- alt_phy = -1;
- }
- if (phy_addr < 0 || phy < 0) {
- /* Delete the PHY things */
- fdt_nop_property(initial_boot_params, eth, "phy-handle");
- /* This one may fail */
- fdt_nop_property(initial_boot_params, eth, "cavium,alt-phy-handle");
- if (phy >= 0)
- fdt_nop_node(initial_boot_params, phy);
- if (alt_phy >= 0)
- fdt_nop_node(initial_boot_params, alt_phy);
- return;
- }
- if (phy_addr >= 256 && alt_phy > 0) {
- const struct fdt_property *phy_prop;
- struct fdt_property *alt_prop;
- u32 phy_handle_name;
- /* Use the alt phy node instead.*/
- phy_prop = fdt_get_property(initial_boot_params, eth, "phy-handle", NULL);
- phy_handle_name = phy_prop->nameoff;
- fdt_nop_node(initial_boot_params, phy);
- fdt_nop_property(initial_boot_params, eth, "phy-handle");
- alt_prop = fdt_get_property_w(initial_boot_params, eth, "cavium,alt-phy-handle", NULL);
- alt_prop->nameoff = phy_handle_name;
- phy = alt_phy;
- }
- phy_addr &= 0xff;
- if (octeon_has_88e1145()) {
- fdt_nop_property(initial_boot_params, phy, "marvell,reg-init");
- memset(new_name, 0, sizeof(new_name));
- strcpy(new_name, "marvell,88e1145");
- p = fdt_getprop(initial_boot_params, phy, "compatible",
- ¤t_len);
- if (p && current_len >= strlen(new_name))
- fdt_setprop_inplace(initial_boot_params, phy,
- "compatible", new_name, current_len);
- }
- reg = fdt_getprop(initial_boot_params, phy, "reg", NULL);
- if (phy_addr == be32_to_cpup(reg))
- return;
- fdt_setprop_inplace_cell(initial_boot_params, phy, "reg", phy_addr);
- snprintf(new_name, sizeof(new_name), "ethernet-phy@%x", phy_addr);
- p = fdt_get_name(initial_boot_params, phy, ¤t_len);
- if (p && current_len == strlen(new_name))
- fdt_set_name(initial_boot_params, phy, new_name);
- else
- pr_err("Error: could not rename ethernet phy: <%s>", p);
- }
- static void __init octeon_fdt_set_mac_addr(int n, u64 *pmac)
- {
- u8 new_mac[6];
- u64 mac = *pmac;
- int r;
- new_mac[0] = (mac >> 40) & 0xff;
- new_mac[1] = (mac >> 32) & 0xff;
- new_mac[2] = (mac >> 24) & 0xff;
- new_mac[3] = (mac >> 16) & 0xff;
- new_mac[4] = (mac >> 8) & 0xff;
- new_mac[5] = mac & 0xff;
- r = fdt_setprop_inplace(initial_boot_params, n, "local-mac-address",
- new_mac, sizeof(new_mac));
- if (r) {
- pr_err("Setting \"local-mac-address\" failed %d", r);
- return;
- }
- *pmac = mac + 1;
- }
- static void __init octeon_fdt_rm_ethernet(int node)
- {
- const __be32 *phy_handle;
- phy_handle = fdt_getprop(initial_boot_params, node, "phy-handle", NULL);
- if (phy_handle) {
- u32 ph = be32_to_cpup(phy_handle);
- int p = fdt_node_offset_by_phandle(initial_boot_params, ph);
- if (p >= 0)
- fdt_nop_node(initial_boot_params, p);
- }
- fdt_nop_node(initial_boot_params, node);
- }
- static void __init octeon_fdt_pip_port(int iface, int i, int p, int max, u64 *pmac)
- {
- char name_buffer[20];
- int eth;
- int phy_addr;
- int ipd_port;
- snprintf(name_buffer, sizeof(name_buffer), "ethernet@%x", p);
- eth = fdt_subnode_offset(initial_boot_params, iface, name_buffer);
- if (eth < 0)
- return;
- if (p > max) {
- pr_debug("Deleting port %x:%x\n", i, p);
- octeon_fdt_rm_ethernet(eth);
- return;
- }
- if (OCTEON_IS_MODEL(OCTEON_CN68XX))
- ipd_port = (0x100 * i) + (0x10 * p) + 0x800;
- else
- ipd_port = 16 * i + p;
- phy_addr = cvmx_helper_board_get_mii_address(ipd_port);
- octeon_fdt_set_phy(eth, phy_addr);
- octeon_fdt_set_mac_addr(eth, pmac);
- }
- static void __init octeon_fdt_pip_iface(int pip, int idx, u64 *pmac)
- {
- char name_buffer[20];
- int iface;
- int p;
- int count;
- count = cvmx_helper_interface_enumerate(idx);
- snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
- iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);
- if (iface < 0)
- return;
- for (p = 0; p < 16; p++)
- octeon_fdt_pip_port(iface, idx, p, count - 1, pmac);
- }
- int __init octeon_prune_device_tree(void)
- {
- int i, max_port, uart_mask;
- const char *pip_path;
- const char *alias_prop;
- char name_buffer[20];
- int aliases;
- u64 mac_addr_base;
- if (fdt_check_header(initial_boot_params))
- panic("Corrupt Device Tree.");
- aliases = fdt_path_offset(initial_boot_params, "/aliases");
- if (aliases < 0) {
- pr_err("Error: No /aliases node in device tree.");
- return -EINVAL;
- }
- mac_addr_base =
- ((octeon_bootinfo->mac_addr_base[0] & 0xffull)) << 40 |
- ((octeon_bootinfo->mac_addr_base[1] & 0xffull)) << 32 |
- ((octeon_bootinfo->mac_addr_base[2] & 0xffull)) << 24 |
- ((octeon_bootinfo->mac_addr_base[3] & 0xffull)) << 16 |
- ((octeon_bootinfo->mac_addr_base[4] & 0xffull)) << 8 |
- (octeon_bootinfo->mac_addr_base[5] & 0xffull);
- if (OCTEON_IS_MODEL(OCTEON_CN52XX) || OCTEON_IS_MODEL(OCTEON_CN63XX))
- max_port = 2;
- else if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN68XX))
- max_port = 1;
- else
- max_port = 0;
- if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E)
- max_port = 0;
- for (i = 0; i < 2; i++) {
- int mgmt;
- snprintf(name_buffer, sizeof(name_buffer),
- "mix%d", i);
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- name_buffer, NULL);
- if (alias_prop) {
- mgmt = fdt_path_offset(initial_boot_params, alias_prop);
- if (mgmt < 0)
- continue;
- if (i >= max_port) {
- pr_debug("Deleting mix%d\n", i);
- octeon_fdt_rm_ethernet(mgmt);
- fdt_nop_property(initial_boot_params, aliases,
- name_buffer);
- } else {
- int phy_addr = cvmx_helper_board_get_mii_address(CVMX_HELPER_BOARD_MGMT_IPD_PORT + i);
- octeon_fdt_set_phy(mgmt, phy_addr);
- octeon_fdt_set_mac_addr(mgmt, &mac_addr_base);
- }
- }
- }
- pip_path = fdt_getprop(initial_boot_params, aliases, "pip", NULL);
- if (pip_path) {
- int pip = fdt_path_offset(initial_boot_params, pip_path);
- if (pip >= 0)
- for (i = 0; i <= 4; i++)
- octeon_fdt_pip_iface(pip, i, &mac_addr_base);
- }
- /* I2C */
- if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
- OCTEON_IS_MODEL(OCTEON_CN63XX) ||
- OCTEON_IS_MODEL(OCTEON_CN68XX) ||
- OCTEON_IS_MODEL(OCTEON_CN56XX))
- max_port = 2;
- else
- max_port = 1;
- for (i = 0; i < 2; i++) {
- int i2c;
- snprintf(name_buffer, sizeof(name_buffer),
- "twsi%d", i);
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- name_buffer, NULL);
- if (alias_prop) {
- i2c = fdt_path_offset(initial_boot_params, alias_prop);
- if (i2c < 0)
- continue;
- if (i >= max_port) {
- pr_debug("Deleting twsi%d\n", i);
- fdt_nop_node(initial_boot_params, i2c);
- fdt_nop_property(initial_boot_params, aliases,
- name_buffer);
- }
- }
- }
- /* SMI/MDIO */
- if (OCTEON_IS_MODEL(OCTEON_CN68XX))
- max_port = 4;
- else if (OCTEON_IS_MODEL(OCTEON_CN52XX) ||
- OCTEON_IS_MODEL(OCTEON_CN63XX) ||
- OCTEON_IS_MODEL(OCTEON_CN56XX))
- max_port = 2;
- else
- max_port = 1;
- for (i = 0; i < 2; i++) {
- int i2c;
- snprintf(name_buffer, sizeof(name_buffer),
- "smi%d", i);
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- name_buffer, NULL);
- if (alias_prop) {
- i2c = fdt_path_offset(initial_boot_params, alias_prop);
- if (i2c < 0)
- continue;
- if (i >= max_port) {
- pr_debug("Deleting smi%d\n", i);
- fdt_nop_node(initial_boot_params, i2c);
- fdt_nop_property(initial_boot_params, aliases,
- name_buffer);
- }
- }
- }
- /* Serial */
- uart_mask = 3;
- /* Right now CN52XX is the only chip with a third uart */
- if (OCTEON_IS_MODEL(OCTEON_CN52XX))
- uart_mask |= 4; /* uart2 */
- for (i = 0; i < 3; i++) {
- int uart;
- snprintf(name_buffer, sizeof(name_buffer),
- "uart%d", i);
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- name_buffer, NULL);
- if (alias_prop) {
- uart = fdt_path_offset(initial_boot_params, alias_prop);
- if (uart_mask & (1 << i))
- continue;
- pr_debug("Deleting uart%d\n", i);
- fdt_nop_node(initial_boot_params, uart);
- fdt_nop_property(initial_boot_params, aliases,
- name_buffer);
- }
- }
- /* Compact Flash */
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- "cf0", NULL);
- if (alias_prop) {
- union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
- unsigned long base_ptr, region_base, region_size;
- unsigned long region1_base = 0;
- unsigned long region1_size = 0;
- int cs, bootbus;
- bool is_16bit = false;
- bool is_true_ide = false;
- __be32 new_reg[6];
- __be32 *ranges;
- int len;
- int cf = fdt_path_offset(initial_boot_params, alias_prop);
- base_ptr = 0;
- if (octeon_bootinfo->major_version == 1
- && octeon_bootinfo->minor_version >= 1) {
- if (octeon_bootinfo->compact_flash_common_base_addr)
- base_ptr = octeon_bootinfo->compact_flash_common_base_addr;
- } else {
- base_ptr = 0x1d000800;
- }
- if (!base_ptr)
- goto no_cf;
- /* Find CS0 region. */
- for (cs = 0; cs < 8; cs++) {
- mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
- region_base = mio_boot_reg_cfg.s.base << 16;
- region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
- if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
- && base_ptr < region_base + region_size) {
- is_16bit = mio_boot_reg_cfg.s.width;
- break;
- }
- }
- if (cs >= 7) {
- /* cs and cs + 1 are CS0 and CS1, both must be less than 8. */
- goto no_cf;
- }
- if (!(base_ptr & 0xfffful)) {
- /*
- * Boot loader signals availability of DMA (true_ide
- * mode) by setting low order bits of base_ptr to
- * zero.
- */
- /* Asume that CS1 immediately follows. */
- mio_boot_reg_cfg.u64 =
- cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs + 1));
- region1_base = mio_boot_reg_cfg.s.base << 16;
- region1_size = (mio_boot_reg_cfg.s.size + 1) << 16;
- if (!mio_boot_reg_cfg.s.en)
- goto no_cf;
- is_true_ide = true;
- } else {
- fdt_nop_property(initial_boot_params, cf, "cavium,true-ide");
- fdt_nop_property(initial_boot_params, cf, "cavium,dma-engine-handle");
- if (!is_16bit) {
- __be32 width = cpu_to_be32(8);
- fdt_setprop_inplace(initial_boot_params, cf,
- "cavium,bus-width", &width, sizeof(width));
- }
- }
- new_reg[0] = cpu_to_be32(cs);
- new_reg[1] = cpu_to_be32(0);
- new_reg[2] = cpu_to_be32(0x10000);
- new_reg[3] = cpu_to_be32(cs + 1);
- new_reg[4] = cpu_to_be32(0);
- new_reg[5] = cpu_to_be32(0x10000);
- fdt_setprop_inplace(initial_boot_params, cf,
- "reg", new_reg, sizeof(new_reg));
- bootbus = fdt_parent_offset(initial_boot_params, cf);
- if (bootbus < 0)
- goto no_cf;
- ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
- if (!ranges || len < (5 * 8 * sizeof(__be32)))
- goto no_cf;
- ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
- ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
- ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
- if (is_true_ide) {
- cs++;
- ranges[(cs * 5) + 2] = cpu_to_be32(region1_base >> 32);
- ranges[(cs * 5) + 3] = cpu_to_be32(region1_base & 0xffffffff);
- ranges[(cs * 5) + 4] = cpu_to_be32(region1_size);
- }
- goto end_cf;
- no_cf:
- fdt_nop_node(initial_boot_params, cf);
- end_cf:
- ;
- }
- /* 8 char LED */
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- "led0", NULL);
- if (alias_prop) {
- union cvmx_mio_boot_reg_cfgx mio_boot_reg_cfg;
- unsigned long base_ptr, region_base, region_size;
- int cs, bootbus;
- __be32 new_reg[6];
- __be32 *ranges;
- int len;
- int led = fdt_path_offset(initial_boot_params, alias_prop);
- base_ptr = octeon_bootinfo->led_display_base_addr;
- if (base_ptr == 0)
- goto no_led;
- /* Find CS0 region. */
- for (cs = 0; cs < 8; cs++) {
- mio_boot_reg_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(cs));
- region_base = mio_boot_reg_cfg.s.base << 16;
- region_size = (mio_boot_reg_cfg.s.size + 1) << 16;
- if (mio_boot_reg_cfg.s.en && base_ptr >= region_base
- && base_ptr < region_base + region_size)
- break;
- }
- if (cs > 7)
- goto no_led;
- new_reg[0] = cpu_to_be32(cs);
- new_reg[1] = cpu_to_be32(0x20);
- new_reg[2] = cpu_to_be32(0x20);
- new_reg[3] = cpu_to_be32(cs);
- new_reg[4] = cpu_to_be32(0);
- new_reg[5] = cpu_to_be32(0x20);
- fdt_setprop_inplace(initial_boot_params, led,
- "reg", new_reg, sizeof(new_reg));
- bootbus = fdt_parent_offset(initial_boot_params, led);
- if (bootbus < 0)
- goto no_led;
- ranges = fdt_getprop_w(initial_boot_params, bootbus, "ranges", &len);
- if (!ranges || len < (5 * 8 * sizeof(__be32)))
- goto no_led;
- ranges[(cs * 5) + 2] = cpu_to_be32(region_base >> 32);
- ranges[(cs * 5) + 3] = cpu_to_be32(region_base & 0xffffffff);
- ranges[(cs * 5) + 4] = cpu_to_be32(region_size);
- goto end_led;
- no_led:
- fdt_nop_node(initial_boot_params, led);
- end_led:
- ;
- }
- /* OHCI/UHCI USB */
- alias_prop = fdt_getprop(initial_boot_params, aliases,
- "uctl", NULL);
- if (alias_prop) {
- int uctl = fdt_path_offset(initial_boot_params, alias_prop);
- if (uctl >= 0 && (!OCTEON_IS_MODEL(OCTEON_CN6XXX) ||
- octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC2E)) {
- pr_debug("Deleting uctl\n");
- fdt_nop_node(initial_boot_params, uctl);
- fdt_nop_property(initial_boot_params, aliases, "uctl");
- } else if (octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC10E ||
- octeon_bootinfo->board_type == CVMX_BOARD_TYPE_NIC4E) {
- /* Missing "refclk-type" defaults to crystal. */
- fdt_nop_property(initial_boot_params, uctl, "refclk-type");
- }
- }
- return 0;
- }
- static int __init octeon_publish_devices(void)
- {
- return of_platform_bus_probe(NULL, octeon_ids, NULL);
- }
- device_initcall(octeon_publish_devices);
- MODULE_AUTHOR("David Daney <ddaney@caviumnetworks.com>");
- MODULE_LICENSE("GPL");
- MODULE_DESCRIPTION("Platform driver for Octeon SOC");
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