// SPDX-License-Identifier: GPL-2.0+/* * IBM Hot Plug Controller Driver * * Written By: Tong Yu, IBM Corporation * * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2001-2003 IBM Corp. * * All rights reserved. * * Send feedback to <gregkh@us.ibm.com> * */ #include <linux/module.h>#include <linux/errno.h>#include <linux/mm.h>#include <linux/slab.h>#include <linux/pci.h>#include <linux/list.h>#include <linux/init.h>#include "ibmphp.h" /* * POST builds data blocks(in this data block definition, a char-1 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended * BIOS Data Area which describe the configuration of the hot-plug * controllers and resources used by the PCI Hot-Plug devices. * * This file walks EBDA, maps data block from physical addr, * reconstruct linked lists about all system resource(MEM, PFM, IO) * already assigned by POST, as well as linked lists about hot plug * controllers (ctlr#, slot#, bus&slot features...) */ /* Global lists */LIST_HEAD(ibmphp_ebda_pci_rsrc_head);LIST_HEAD(ibmphp_slot_head); /* Local variables */static struct ebda_hpc_list *hpc_list_ptr;static struct ebda_rsrc_list *rsrc_list_ptr;static struct rio_table_hdr *rio_table_ptr = NULL;static LIST_HEAD(ebda_hpc_head);static LIST_HEAD(bus_info_head);static LIST_HEAD(rio_vg_head);static LIST_HEAD(rio_lo_head);static LIST_HEAD(opt_vg_head);static LIST_HEAD(opt_lo_head);static void __iomem *io_mem; /* Local functions */static int ebda_rsrc_controller(void);static int ebda_rsrc_rsrc(void);static int ebda_rio_table(void); static struct ebda_hpc_list * __init alloc_ebda_hpc_list(void){ return kzalloc_obj(struct ebda_hpc_list);} static struct controller *alloc_ebda_hpc(u32 slot_count, u32 bus_count){ struct controller *controller; struct ebda_hpc_slot *slots; struct ebda_hpc_bus *buses; controller = kzalloc_obj(struct controller); if (!controller) goto error; slots = kzalloc_objs(struct ebda_hpc_slot, slot_count); if (!slots) goto error_contr; controller->slots = slots; buses = kzalloc_objs(struct ebda_hpc_bus, bus_count); if (!buses) goto error_slots; controller->buses = buses; return controller;error_slots: kfree(controller->slots);error_contr: kfree(controller);error: return NULL;} static void free_ebda_hpc(struct controller *controller){ kfree(controller->slots); kfree(controller->buses); kfree(controller);} static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list(void){ return kzalloc_obj(struct ebda_rsrc_list);} static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc(void){ return kzalloc_obj(struct ebda_pci_rsrc);} static void __init print_bus_info(void){ struct bus_info *ptr; list_for_each_entry(ptr, &bus_info_head, bus_info_list) { debug("%s - slot_min = %x\n", __func__, ptr->slot_min); debug("%s - slot_max = %x\n", __func__, ptr->slot_max); debug("%s - slot_count = %x\n", __func__, ptr->slot_count); debug("%s - bus# = %x\n", __func__, ptr->busno); debug("%s - current_speed = %x\n", __func__, ptr->current_speed); debug("%s - controller_id = %x\n", __func__, ptr->controller_id); debug("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv); debug("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv); debug("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix); debug("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix); debug("%s - slots_at_133_pcix = %x\n", __func__, ptr->slots_at_133_pcix); }} static void print_lo_info(void){ struct rio_detail *ptr; debug("print_lo_info ----\n"); list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) { debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); debug("%s - rio_type = %x\n", __func__, ptr->rio_type); debug("%s - owner_id = %x\n", __func__, ptr->owner_id); debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); debug("%s - wpindex = %x\n", __func__, ptr->wpindex); debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num); }} static void print_vg_info(void){ struct rio_detail *ptr; debug("%s ---\n", __func__); list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) { debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); debug("%s - rio_type = %x\n", __func__, ptr->rio_type); debug("%s - owner_id = %x\n", __func__, ptr->owner_id); debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); debug("%s - wpindex = %x\n", __func__, ptr->wpindex); debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num); }} static void __init print_ebda_pci_rsrc(void){ struct ebda_pci_rsrc *ptr; list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) { debug("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", __func__, ptr->rsrc_type, ptr->bus_num, ptr->dev_fun, ptr->start_addr, ptr->end_addr); }} static void __init print_ibm_slot(void){ struct slot *ptr; list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) { debug("%s - slot_number: %x\n", __func__, ptr->number); }} static void __init print_opt_vg(void){ struct opt_rio *ptr; debug("%s ---\n", __func__); list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { debug("%s - rio_type %x\n", __func__, ptr->rio_type); debug("%s - chassis_num: %x\n", __func__, ptr->chassis_num); debug("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num); debug("%s - middle_num: %x\n", __func__, ptr->middle_num); }} static void __init print_ebda_hpc(void){ struct controller *hpc_ptr; u16 index; list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) { for (index = 0; index < hpc_ptr->slot_count; index++) { debug("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num); debug("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num); debug("%s - index into ctlr addr: %x\n", __func__, hpc_ptr->slots[index].ctl_index); debug("%s - cap of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_cap); } for (index = 0; index < hpc_ptr->bus_count; index++) debug("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num); debug("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type); switch (hpc_ptr->ctlr_type) { case 1: debug("%s - bus: %x\n", __func__, hpc_ptr->u.pci_ctlr.bus); debug("%s - dev_fun: %x\n", __func__, hpc_ptr->u.pci_ctlr.dev_fun); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; case 0: debug("%s - io_start: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_start); debug("%s - io_end: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_end); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; case 2: case 4: debug("%s - wpegbbar: %lx\n", __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar); debug("%s - i2c_addr: %x\n", __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; } }} int __init ibmphp_access_ebda(void){ u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz; u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base; int rc = 0; rio_complete = 0; hs_complete = 0; io_mem = ioremap((0x40 << 4) + 0x0e, 2); if (!io_mem) return -ENOMEM; ebda_seg = readw(io_mem); iounmap(io_mem); debug("returned ebda segment: %x\n", ebda_seg); io_mem = ioremap(ebda_seg<<4, 1); if (!io_mem) return -ENOMEM; ebda_sz = readb(io_mem); iounmap(io_mem); debug("ebda size: %d(KiB)\n", ebda_sz); if (ebda_sz == 0) return -ENOMEM; io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024)); if (!io_mem) return -ENOMEM; next_offset = 0x180; for (;;) { offset = next_offset; /* Make sure what we read is still in the mapped section */ if (WARN(offset > (ebda_sz * 1024 - 4), "ibmphp_ebda: next read is beyond ebda_sz\n")) break; next_offset = readw(io_mem + offset); /* offset of next blk */ offset += 2; if (next_offset == 0) /* 0 indicate it's last blk */ break; blk_id = readw(io_mem + offset); /* this blk id */ offset += 2; /* check if it is hot swap block or rio block */ if (blk_id != 0x4853 && blk_id != 0x4752) continue; /* found hs table */ if (blk_id == 0x4853) { debug("now enter hot swap block---\n"); debug("hot blk id: %x\n", blk_id); format = readb(io_mem + offset); offset += 1; if (format != 4) goto error_nodev; debug("hot blk format: %x\n", format); /* hot swap sub blk */ base = offset; sub_addr = base; re = readw(io_mem + sub_addr); /* next sub blk */ sub_addr += 2; rc_id = readw(io_mem + sub_addr); /* sub blk id */ sub_addr += 2; if (rc_id != 0x5243) goto error_nodev; /* rc sub blk signature */ num_ctlrs = readb(io_mem + sub_addr); sub_addr += 1; hpc_list_ptr = alloc_ebda_hpc_list(); if (!hpc_list_ptr) { rc = -ENOMEM; goto out; } hpc_list_ptr->format = format; hpc_list_ptr->num_ctlrs = num_ctlrs; hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */ debug("info about hpc descriptor---\n"); debug("hot blk format: %x\n", format); debug("num of controller: %x\n", num_ctlrs); debug("offset of hpc data structure entries: %x\n ", sub_addr); sub_addr = base + re; /* re sub blk */ /* FIXME: rc is never used/checked */ rc = readw(io_mem + sub_addr); /* next sub blk */ sub_addr += 2; re_id = readw(io_mem + sub_addr); /* sub blk id */ sub_addr += 2; if (re_id != 0x5245) goto error_nodev; /* signature of re */ num_entries = readw(io_mem + sub_addr); sub_addr += 2; /* offset of RSRC_ENTRIES blk */ rsrc_list_ptr = alloc_ebda_rsrc_list(); if (!rsrc_list_ptr) { rc = -ENOMEM; goto out; } rsrc_list_ptr->format = format; rsrc_list_ptr->num_entries = num_entries; rsrc_list_ptr->phys_addr = sub_addr; debug("info about rsrc descriptor---\n"); debug("format: %x\n", format); debug("num of rsrc: %x\n", num_entries); debug("offset of rsrc data structure entries: %x\n ", sub_addr); hs_complete = 1; } else { /* found rio table, blk_id == 0x4752 */ debug("now enter io table ---\n"); debug("rio blk id: %x\n", blk_id); rio_table_ptr = kzalloc_obj(struct rio_table_hdr); if (!rio_table_ptr) { rc = -ENOMEM; goto out; } rio_table_ptr->ver_num = readb(io_mem + offset); rio_table_ptr->scal_count = readb(io_mem + offset + 1); rio_table_ptr->riodev_count = readb(io_mem + offset + 2); rio_table_ptr->offset = offset + 3 ; debug("info about rio table hdr ---\n"); debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", rio_table_ptr->ver_num, rio_table_ptr->scal_count, rio_table_ptr->riodev_count, rio_table_ptr->offset); rio_complete = 1; } } if (!hs_complete && !rio_complete) goto error_nodev; if (rio_table_ptr) { if (rio_complete && rio_table_ptr->ver_num == 3) { rc = ebda_rio_table(); if (rc) goto out; } } rc = ebda_rsrc_controller(); if (rc) goto out; rc = ebda_rsrc_rsrc(); goto out;error_nodev: rc = -ENODEV;out: iounmap(io_mem); return rc;} /* * map info of scalability details and rio details from physical address */static int __init ebda_rio_table(void){ u16 offset; u8 i; struct rio_detail *rio_detail_ptr; offset = rio_table_ptr->offset; offset += 12 * rio_table_ptr->scal_count; // we do concern about rio details for (i = 0; i < rio_table_ptr->riodev_count; i++) { rio_detail_ptr = kzalloc_obj(struct rio_detail); if (!rio_detail_ptr) return -ENOMEM; rio_detail_ptr->rio_node_id = readb(io_mem + offset); rio_detail_ptr->bbar = readl(io_mem + offset + 1); rio_detail_ptr->rio_type = readb(io_mem + offset + 5); rio_detail_ptr->owner_id = readb(io_mem + offset + 6); rio_detail_ptr->port0_node_connect = readb(io_mem + offset + 7); rio_detail_ptr->port0_port_connect = readb(io_mem + offset + 8); rio_detail_ptr->port1_node_connect = readb(io_mem + offset + 9); rio_detail_ptr->port1_port_connect = readb(io_mem + offset + 10); rio_detail_ptr->first_slot_num = readb(io_mem + offset + 11); rio_detail_ptr->status = readb(io_mem + offset + 12); rio_detail_ptr->wpindex = readb(io_mem + offset + 13); rio_detail_ptr->chassis_num = readb(io_mem + offset + 14);// debug("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status); //create linked list of chassis if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5) list_add(&rio_detail_ptr->rio_detail_list, &rio_vg_head); //create linked list of expansion box else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7) list_add(&rio_detail_ptr->rio_detail_list, &rio_lo_head); else // not in my concern kfree(rio_detail_ptr); offset += 15; } print_lo_info(); print_vg_info(); return 0;} /* * reorganizing linked list of chassis */static struct opt_rio *search_opt_vg(u8 chassis_num){ struct opt_rio *ptr; list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { if (ptr->chassis_num == chassis_num) return ptr; } return NULL;} static int __init combine_wpg_for_chassis(void){ struct opt_rio *opt_rio_ptr = NULL; struct rio_detail *rio_detail_ptr = NULL; list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) { opt_rio_ptr = search_opt_vg(rio_detail_ptr->chassis_num); if (!opt_rio_ptr) { opt_rio_ptr = kzalloc_obj(struct opt_rio); if (!opt_rio_ptr) return -ENOMEM; opt_rio_ptr->rio_type = rio_detail_ptr->rio_type; opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num; opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num; opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num; list_add(&opt_rio_ptr->opt_rio_list, &opt_vg_head); } else { opt_rio_ptr->first_slot_num = min(opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num); opt_rio_ptr->middle_num = max(opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num); } } print_opt_vg(); return 0;} /* * reorganizing linked list of expansion box */static struct opt_rio_lo *search_opt_lo(u8 chassis_num){ struct opt_rio_lo *ptr; list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) { if (ptr->chassis_num == chassis_num) return ptr; } return NULL;} static int combine_wpg_for_expansion(void){ struct opt_rio_lo *opt_rio_lo_ptr = NULL; struct rio_detail *rio_detail_ptr = NULL; list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) { opt_rio_lo_ptr = search_opt_lo(rio_detail_ptr->chassis_num);Lines 1–500 of 1118. 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// SPDX-License-Identifier: GPL-2.0+ /* * IBM Hot Plug Controller Driver * * Written By: Tong Yu, IBM Corporation * * Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2001-2003 IBM Corp. * * All rights reserved. * * Send feedback to <gregkh@us.ibm.com> * */ #include <linux/module.h> #include <linux/errno.h> #include <linux/mm.h> #include <linux/slab.h> #include <linux/pci.h> #include <linux/list.h> #include <linux/init.h> #include "ibmphp.h" /* * POST builds data blocks(in this data block definition, a char-1 * byte, short(or word)-2 byte, long(dword)-4 byte) in the Extended * BIOS Data Area which describe the configuration of the hot-plug * controllers and resources used by the PCI Hot-Plug devices. * * This file walks EBDA, maps data block from physical addr, * reconstruct linked lists about all system resource(MEM, PFM, IO) * already assigned by POST, as well as linked lists about hot plug * controllers (ctlr#, slot#, bus&slot features...) */ /* Global lists */ LIST_HEAD(ibmphp_ebda_pci_rsrc_head); LIST_HEAD(ibmphp_slot_head); /* Local variables */ static struct ebda_hpc_list *hpc_list_ptr; static struct ebda_rsrc_list *rsrc_list_ptr; static struct rio_table_hdr *rio_table_ptr = NULL; static LIST_HEAD(ebda_hpc_head); static LIST_HEAD(bus_info_head); static LIST_HEAD(rio_vg_head); static LIST_HEAD(rio_lo_head); static LIST_HEAD(opt_vg_head); static LIST_HEAD(opt_lo_head); static void __iomem *io_mem; /* Local functions */ static int ebda_rsrc_controller(void); static int ebda_rsrc_rsrc(void); static int ebda_rio_table(void); static struct ebda_hpc_list * __init alloc_ebda_hpc_list(void) { return kzalloc_obj(struct ebda_hpc_list); } static struct controller *alloc_ebda_hpc(u32 slot_count, u32 bus_count) { struct controller *controller; struct ebda_hpc_slot *slots; struct ebda_hpc_bus *buses; controller = kzalloc_obj(struct controller); if (!controller) goto error; slots = kzalloc_objs(struct ebda_hpc_slot, slot_count); if (!slots) goto error_contr; controller->slots = slots; buses = kzalloc_objs(struct ebda_hpc_bus, bus_count); if (!buses) goto error_slots; controller->buses = buses; return controller; error_slots: kfree(controller->slots); error_contr: kfree(controller); error: return NULL; } static void free_ebda_hpc(struct controller *controller) { kfree(controller->slots); kfree(controller->buses); kfree(controller); } static struct ebda_rsrc_list * __init alloc_ebda_rsrc_list(void) { return kzalloc_obj(struct ebda_rsrc_list); } static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc(void) { return kzalloc_obj(struct ebda_pci_rsrc); } static void __init print_bus_info(void) { struct bus_info *ptr; list_for_each_entry(ptr, &bus_info_head, bus_info_list) { debug("%s - slot_min = %x\n", __func__, ptr->slot_min); debug("%s - slot_max = %x\n", __func__, ptr->slot_max); debug("%s - slot_count = %x\n", __func__, ptr->slot_count); debug("%s - bus# = %x\n", __func__, ptr->busno); debug("%s - current_speed = %x\n", __func__, ptr->current_speed); debug("%s - controller_id = %x\n", __func__, ptr->controller_id); debug("%s - slots_at_33_conv = %x\n", __func__, ptr->slots_at_33_conv); debug("%s - slots_at_66_conv = %x\n", __func__, ptr->slots_at_66_conv); debug("%s - slots_at_66_pcix = %x\n", __func__, ptr->slots_at_66_pcix); debug("%s - slots_at_100_pcix = %x\n", __func__, ptr->slots_at_100_pcix); debug("%s - slots_at_133_pcix = %x\n", __func__, ptr->slots_at_133_pcix); } } static void print_lo_info(void) { struct rio_detail *ptr; debug("print_lo_info ----\n"); list_for_each_entry(ptr, &rio_lo_head, rio_detail_list) { debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); debug("%s - rio_type = %x\n", __func__, ptr->rio_type); debug("%s - owner_id = %x\n", __func__, ptr->owner_id); debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); debug("%s - wpindex = %x\n", __func__, ptr->wpindex); debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num); } } static void print_vg_info(void) { struct rio_detail *ptr; debug("%s ---\n", __func__); list_for_each_entry(ptr, &rio_vg_head, rio_detail_list) { debug("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id); debug("%s - rio_type = %x\n", __func__, ptr->rio_type); debug("%s - owner_id = %x\n", __func__, ptr->owner_id); debug("%s - first_slot_num = %x\n", __func__, ptr->first_slot_num); debug("%s - wpindex = %x\n", __func__, ptr->wpindex); debug("%s - chassis_num = %x\n", __func__, ptr->chassis_num); } } static void __init print_ebda_pci_rsrc(void) { struct ebda_pci_rsrc *ptr; list_for_each_entry(ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) { debug("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n", __func__, ptr->rsrc_type, ptr->bus_num, ptr->dev_fun, ptr->start_addr, ptr->end_addr); } } static void __init print_ibm_slot(void) { struct slot *ptr; list_for_each_entry(ptr, &ibmphp_slot_head, ibm_slot_list) { debug("%s - slot_number: %x\n", __func__, ptr->number); } } static void __init print_opt_vg(void) { struct opt_rio *ptr; debug("%s ---\n", __func__); list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { debug("%s - rio_type %x\n", __func__, ptr->rio_type); debug("%s - chassis_num: %x\n", __func__, ptr->chassis_num); debug("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num); debug("%s - middle_num: %x\n", __func__, ptr->middle_num); } } static void __init print_ebda_hpc(void) { struct controller *hpc_ptr; u16 index; list_for_each_entry(hpc_ptr, &ebda_hpc_head, ebda_hpc_list) { for (index = 0; index < hpc_ptr->slot_count; index++) { debug("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num); debug("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num); debug("%s - index into ctlr addr: %x\n", __func__, hpc_ptr->slots[index].ctl_index); debug("%s - cap of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_cap); } for (index = 0; index < hpc_ptr->bus_count; index++) debug("%s - bus# of each bus controlled by this ctlr: %x\n", __func__, hpc_ptr->buses[index].bus_num); debug("%s - type of hpc: %x\n", __func__, hpc_ptr->ctlr_type); switch (hpc_ptr->ctlr_type) { case 1: debug("%s - bus: %x\n", __func__, hpc_ptr->u.pci_ctlr.bus); debug("%s - dev_fun: %x\n", __func__, hpc_ptr->u.pci_ctlr.dev_fun); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; case 0: debug("%s - io_start: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_start); debug("%s - io_end: %x\n", __func__, hpc_ptr->u.isa_ctlr.io_end); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; case 2: case 4: debug("%s - wpegbbar: %lx\n", __func__, hpc_ptr->u.wpeg_ctlr.wpegbbar); debug("%s - i2c_addr: %x\n", __func__, hpc_ptr->u.wpeg_ctlr.i2c_addr); debug("%s - irq: %x\n", __func__, hpc_ptr->irq); break; } } } int __init ibmphp_access_ebda(void) { u8 format, num_ctlrs, rio_complete, hs_complete, ebda_sz; u16 ebda_seg, num_entries, next_offset, offset, blk_id, sub_addr, re, rc_id, re_id, base; int rc = 0; rio_complete = 0; hs_complete = 0; io_mem = ioremap((0x40 << 4) + 0x0e, 2); if (!io_mem) return -ENOMEM; ebda_seg = readw(io_mem); iounmap(io_mem); debug("returned ebda segment: %x\n", ebda_seg); io_mem = ioremap(ebda_seg<<4, 1); if (!io_mem) return -ENOMEM; ebda_sz = readb(io_mem); iounmap(io_mem); debug("ebda size: %d(KiB)\n", ebda_sz); if (ebda_sz == 0) return -ENOMEM; io_mem = ioremap(ebda_seg<<4, (ebda_sz * 1024)); if (!io_mem) return -ENOMEM; next_offset = 0x180; for (;;) { offset = next_offset; /* Make sure what we read is still in the mapped section */ if (WARN(offset > (ebda_sz * 1024 - 4), "ibmphp_ebda: next read is beyond ebda_sz\n")) break; next_offset = readw(io_mem + offset); /* offset of next blk */ offset += 2; if (next_offset == 0) /* 0 indicate it's last blk */ break; blk_id = readw(io_mem + offset); /* this blk id */ offset += 2; /* check if it is hot swap block or rio block */ if (blk_id != 0x4853 && blk_id != 0x4752) continue; /* found hs table */ if (blk_id == 0x4853) { debug("now enter hot swap block---\n"); debug("hot blk id: %x\n", blk_id); format = readb(io_mem + offset); offset += 1; if (format != 4) goto error_nodev; debug("hot blk format: %x\n", format); /* hot swap sub blk */ base = offset; sub_addr = base; re = readw(io_mem + sub_addr); /* next sub blk */ sub_addr += 2; rc_id = readw(io_mem + sub_addr); /* sub blk id */ sub_addr += 2; if (rc_id != 0x5243) goto error_nodev; /* rc sub blk signature */ num_ctlrs = readb(io_mem + sub_addr); sub_addr += 1; hpc_list_ptr = alloc_ebda_hpc_list(); if (!hpc_list_ptr) { rc = -ENOMEM; goto out; } hpc_list_ptr->format = format; hpc_list_ptr->num_ctlrs = num_ctlrs; hpc_list_ptr->phys_addr = sub_addr; /* offset of RSRC_CONTROLLER blk */ debug("info about hpc descriptor---\n"); debug("hot blk format: %x\n", format); debug("num of controller: %x\n", num_ctlrs); debug("offset of hpc data structure entries: %x\n ", sub_addr); sub_addr = base + re; /* re sub blk */ /* FIXME: rc is never used/checked */ rc = readw(io_mem + sub_addr); /* next sub blk */ sub_addr += 2; re_id = readw(io_mem + sub_addr); /* sub blk id */ sub_addr += 2; if (re_id != 0x5245) goto error_nodev; /* signature of re */ num_entries = readw(io_mem + sub_addr); sub_addr += 2; /* offset of RSRC_ENTRIES blk */ rsrc_list_ptr = alloc_ebda_rsrc_list(); if (!rsrc_list_ptr) { rc = -ENOMEM; goto out; } rsrc_list_ptr->format = format; rsrc_list_ptr->num_entries = num_entries; rsrc_list_ptr->phys_addr = sub_addr; debug("info about rsrc descriptor---\n"); debug("format: %x\n", format); debug("num of rsrc: %x\n", num_entries); debug("offset of rsrc data structure entries: %x\n ", sub_addr); hs_complete = 1; } else { /* found rio table, blk_id == 0x4752 */ debug("now enter io table ---\n"); debug("rio blk id: %x\n", blk_id); rio_table_ptr = kzalloc_obj(struct rio_table_hdr); if (!rio_table_ptr) { rc = -ENOMEM; goto out; } rio_table_ptr->ver_num = readb(io_mem + offset); rio_table_ptr->scal_count = readb(io_mem + offset + 1); rio_table_ptr->riodev_count = readb(io_mem + offset + 2); rio_table_ptr->offset = offset + 3 ; debug("info about rio table hdr ---\n"); debug("ver_num: %x\nscal_count: %x\nriodev_count: %x\noffset of rio table: %x\n ", rio_table_ptr->ver_num, rio_table_ptr->scal_count, rio_table_ptr->riodev_count, rio_table_ptr->offset); rio_complete = 1; } } if (!hs_complete && !rio_complete) goto error_nodev; if (rio_table_ptr) { if (rio_complete && rio_table_ptr->ver_num == 3) { rc = ebda_rio_table(); if (rc) goto out; } } rc = ebda_rsrc_controller(); if (rc) goto out; rc = ebda_rsrc_rsrc(); goto out; error_nodev: rc = -ENODEV; out: iounmap(io_mem); return rc; } /* * map info of scalability details and rio details from physical address */ static int __init ebda_rio_table(void) { u16 offset; u8 i; struct rio_detail *rio_detail_ptr; offset = rio_table_ptr->offset; offset += 12 * rio_table_ptr->scal_count; // we do concern about rio details for (i = 0; i < rio_table_ptr->riodev_count; i++) { rio_detail_ptr = kzalloc_obj(struct rio_detail); if (!rio_detail_ptr) return -ENOMEM; rio_detail_ptr->rio_node_id = readb(io_mem + offset); rio_detail_ptr->bbar = readl(io_mem + offset + 1); rio_detail_ptr->rio_type = readb(io_mem + offset + 5); rio_detail_ptr->owner_id = readb(io_mem + offset + 6); rio_detail_ptr->port0_node_connect = readb(io_mem + offset + 7); rio_detail_ptr->port0_port_connect = readb(io_mem + offset + 8); rio_detail_ptr->port1_node_connect = readb(io_mem + offset + 9); rio_detail_ptr->port1_port_connect = readb(io_mem + offset + 10); rio_detail_ptr->first_slot_num = readb(io_mem + offset + 11); rio_detail_ptr->status = readb(io_mem + offset + 12); rio_detail_ptr->wpindex = readb(io_mem + offset + 13); rio_detail_ptr->chassis_num = readb(io_mem + offset + 14); // debug("rio_node_id: %x\nbbar: %x\nrio_type: %x\nowner_id: %x\nport0_node: %x\nport0_port: %x\nport1_node: %x\nport1_port: %x\nfirst_slot_num: %x\nstatus: %x\n", rio_detail_ptr->rio_node_id, rio_detail_ptr->bbar, rio_detail_ptr->rio_type, rio_detail_ptr->owner_id, rio_detail_ptr->port0_node_connect, rio_detail_ptr->port0_port_connect, rio_detail_ptr->port1_node_connect, rio_detail_ptr->port1_port_connect, rio_detail_ptr->first_slot_num, rio_detail_ptr->status); //create linked list of chassis if (rio_detail_ptr->rio_type == 4 || rio_detail_ptr->rio_type == 5) list_add(&rio_detail_ptr->rio_detail_list, &rio_vg_head); //create linked list of expansion box else if (rio_detail_ptr->rio_type == 6 || rio_detail_ptr->rio_type == 7) list_add(&rio_detail_ptr->rio_detail_list, &rio_lo_head); else // not in my concern kfree(rio_detail_ptr); offset += 15; } print_lo_info(); print_vg_info(); return 0; } /* * reorganizing linked list of chassis */ static struct opt_rio *search_opt_vg(u8 chassis_num) { struct opt_rio *ptr; list_for_each_entry(ptr, &opt_vg_head, opt_rio_list) { if (ptr->chassis_num == chassis_num) return ptr; } return NULL; } static int __init combine_wpg_for_chassis(void) { struct opt_rio *opt_rio_ptr = NULL; struct rio_detail *rio_detail_ptr = NULL; list_for_each_entry(rio_detail_ptr, &rio_vg_head, rio_detail_list) { opt_rio_ptr = search_opt_vg(rio_detail_ptr->chassis_num); if (!opt_rio_ptr) { opt_rio_ptr = kzalloc_obj(struct opt_rio); if (!opt_rio_ptr) return -ENOMEM; opt_rio_ptr->rio_type = rio_detail_ptr->rio_type; opt_rio_ptr->chassis_num = rio_detail_ptr->chassis_num; opt_rio_ptr->first_slot_num = rio_detail_ptr->first_slot_num; opt_rio_ptr->middle_num = rio_detail_ptr->first_slot_num; list_add(&opt_rio_ptr->opt_rio_list, &opt_vg_head); } else { opt_rio_ptr->first_slot_num = min(opt_rio_ptr->first_slot_num, rio_detail_ptr->first_slot_num); opt_rio_ptr->middle_num = max(opt_rio_ptr->middle_num, rio_detail_ptr->first_slot_num); } } print_opt_vg(); return 0; } /* * reorganizing linked list of expansion box */ static struct opt_rio_lo *search_opt_lo(u8 chassis_num) { struct opt_rio_lo *ptr; list_for_each_entry(ptr, &opt_lo_head, opt_rio_lo_list) { if (ptr->chassis_num == chassis_num) return ptr; } return NULL; } static int combine_wpg_for_expansion(void) { struct opt_rio_lo *opt_rio_lo_ptr = NULL; struct rio_detail *rio_detail_ptr = NULL; list_for_each_entry(rio_detail_ptr, &rio_lo_head, rio_detail_list) { opt_rio_lo_ptr = search_opt_lo(rio_detail_ptr->chassis_num);