OsdHardware.c revision 170143
167760Smsmith/*- 280071Smsmith * Copyright (c) 2000, 2001 Michael Smith 367760Smsmith * Copyright (c) 2000 BSDi 467760Smsmith * All rights reserved. 567760Smsmith * 667760Smsmith * Redistribution and use in source and binary forms, with or without 767760Smsmith * modification, are permitted provided that the following conditions 867760Smsmith * are met: 967760Smsmith * 1. Redistributions of source code must retain the above copyright 1067760Smsmith * notice, this list of conditions and the following disclaimer. 1167760Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1267760Smsmith * notice, this list of conditions and the following disclaimer in the 1367760Smsmith * documentation and/or other materials provided with the distribution. 1467760Smsmith * 1567760Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1667760Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1767760Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1867760Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1967760Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2067760Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2167760Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2267760Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2367760Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2467760Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2567760Smsmith * SUCH DAMAGE. 2667760Smsmith */ 2767760Smsmith 2867760Smsmith/* 2967760Smsmith * 6.7 : Hardware Abstraction 3067760Smsmith */ 3167760Smsmith 32148318Snjl#include <sys/cdefs.h> 33148318Snjl__FBSDID("$FreeBSD: head/sys/dev/acpica/Osd/OsdHardware.c 170143 2007-05-31 00:52:32Z njl $"); 34148318Snjl 35150003Sobrien#include <contrib/dev/acpica/acpi.h> 3667760Smsmith 37170143Snjl#include <sys/bus.h> 38157245Snjl#include <sys/kernel.h> 3967760Smsmith#include <machine/bus.h> 4067760Smsmith#include <machine/pci_cfgreg.h> 41170143Snjl#include <dev/acpica/acpivar.h> 42114246Snjl#include <dev/pci/pcireg.h> 4367760Smsmith 4467760Smsmith/* 4567760Smsmith * ACPICA's rather gung-ho approach to hardware resource ownership is a little 46157452Snjl * troublesome insofar as there is no easy way for us to know in advance 4767760Smsmith * exactly which I/O resources it's going to want to use. 48157452Snjl * 4967760Smsmith * In order to deal with this, we ignore resource ownership entirely, and simply 5067760Smsmith * use the native I/O space accessor functionality. This is Evil, but it works. 5167760Smsmith * 5267760Smsmith * XXX use an intermediate #define for the tag/handle 5367760Smsmith */ 5467760Smsmith 5584446Sdfr#ifdef __i386__ 5667760Smsmith#define ACPI_BUS_SPACE_IO I386_BUS_SPACE_IO 5767760Smsmith#define ACPI_BUS_HANDLE 0 5884446Sdfr#endif 5984446Sdfr#ifdef __ia64__ 6084446Sdfr#define ACPI_BUS_SPACE_IO IA64_BUS_SPACE_IO 6184446Sdfr#define ACPI_BUS_HANDLE 0 6284446Sdfr#endif 63115427Speter#ifdef __amd64__ 64115427Speter#define ACPI_BUS_SPACE_IO AMD64_BUS_SPACE_IO 65115427Speter#define ACPI_BUS_HANDLE 0 66115427Speter#endif 6767760Smsmith 68157245Snjl/* 69157245Snjl * Some BIOS vendors use AML to read/write directly to IO space. This 70157245Snjl * can cause a problem if such accesses interfere with the OS's access to 71157245Snjl * the same ports. Windows XP and newer systems block accesses to certain 72157245Snjl * IO ports. We print a message or block accesses based on a tunable. 73157245Snjl */ 74157245Snjlstatic int illegal_bios_ports[] = { 75157245Snjl 0x000, 0x00f, /* DMA controller 1 */ 76157245Snjl 0x020, 0x021, /* PIC */ 77157245Snjl 0x040, 0x043, /* Timer 1 */ 78157245Snjl 0x048, 0x04b, /* Timer 2 failsafe */ 79157245Snjl 0x070, 0x071, /* CMOS and RTC */ 80157245Snjl 0x074, 0x076, /* Extended CMOS */ 81157245Snjl 0x081, 0x083, /* DMA1 page registers */ 82157245Snjl 0x087, 0x087, /* DMA1 ch0 low page */ 83157245Snjl 0x089, 0x08b, /* DMA2 ch2 (0x89), ch3 low page (0x8a, 0x8b) */ 84157245Snjl 0x08f, 0x091, /* DMA2 low page refresh (0x8f) */ 85157245Snjl /* Arb ctrl port, card select feedback (0x90, 0x91) */ 86157245Snjl 0x093, 0x094, /* System board setup */ 87157245Snjl 0x096, 0x097, /* POS channel select */ 88157245Snjl 0x0a0, 0x0a1, /* PIC (cascaded) */ 89157245Snjl 0x0c0, 0x0df, /* ISA DMA */ 90157245Snjl 0x4d0, 0x4d1, /* PIC ELCR (edge/level control) */ 91157245Snjl 0xcf8, 0xcff, /* PCI config space. Microsoft adds 0xd00 also but 92157245Snjl that seems incorrect. */ 93157245Snjl -1, -1 94157245Snjl}; 95157245Snjl 96157245Snjl/* Block accesses to bad IO port addresses or just print a warning. */ 97157245Snjlstatic int block_bad_io; 98157245SnjlTUNABLE_INT("debug.acpi.block_bad_io", &block_bad_io); 99157245Snjl 100157245Snjl/* 101157245Snjl * Look up bad ports in our table. Returns 0 if ok, 1 if marked bad but 102157245Snjl * access is still allowed, or -1 to deny access. 103157245Snjl */ 104157245Snjlstatic int 105157245Snjlacpi_os_check_port(UINT32 addr, UINT32 width) 106157245Snjl{ 107157245Snjl int error, *port; 108157245Snjl 109157245Snjl error = 0; 110157245Snjl for (port = illegal_bios_ports; *port != -1; port += 2) { 111157245Snjl if ((addr >= port[0] && addr <= port[1]) || 112157452Snjl (addr < port[0] && addr + (width / 8) > port[0])) { 113157245Snjl if (block_bad_io) 114157245Snjl error = -1; 115157245Snjl else 116157245Snjl error = 1; 117157245Snjl break; 118157245Snjl } 119157245Snjl } 120157245Snjl 121157245Snjl return (error); 122157245Snjl} 123157245Snjl 12480071SmsmithACPI_STATUS 125128225SnjlAcpiOsReadPort(ACPI_IO_ADDRESS InPort, UINT32 *Value, UINT32 Width) 12667760Smsmith{ 127157245Snjl int error; 128157245Snjl 129157245Snjl error = acpi_os_check_port(InPort, Width); 130157245Snjl if (error != 0) { 131162597Shrs if (bootverbose) 132162597Shrs printf("acpi: bad read from port 0x%03x (%d)\n", 133162597Shrs (int)InPort, Width); 134157245Snjl if (error == -1) 135157245Snjl return (AE_BAD_PARAMETER); 136157245Snjl } 137157245Snjl 13880071Smsmith switch (Width) { 13980071Smsmith case 8: 140128225Snjl *(u_int8_t *)Value = bus_space_read_1(ACPI_BUS_SPACE_IO, 141128225Snjl ACPI_BUS_HANDLE, InPort); 14280071Smsmith break; 14380071Smsmith case 16: 144128225Snjl *(u_int16_t *)Value = bus_space_read_2(ACPI_BUS_SPACE_IO, 145128225Snjl ACPI_BUS_HANDLE, InPort); 14680071Smsmith break; 14780071Smsmith case 32: 148128225Snjl *(u_int32_t *)Value = bus_space_read_4(ACPI_BUS_SPACE_IO, 149128225Snjl ACPI_BUS_HANDLE, InPort); 15080071Smsmith break; 15180071Smsmith default: 15280071Smsmith /* debug trap goes here */ 15392666Speter break; 15480071Smsmith } 15567760Smsmith 156128225Snjl return (AE_OK); 15767760Smsmith} 15867760Smsmith 15967760SmsmithACPI_STATUS 160128225SnjlAcpiOsWritePort(ACPI_IO_ADDRESS OutPort, UINT32 Value, UINT32 Width) 16167760Smsmith{ 162157245Snjl int error; 163157245Snjl 164157245Snjl error = acpi_os_check_port(OutPort, Width); 165157245Snjl if (error != 0) { 166162597Shrs if (bootverbose) 167162597Shrs printf("acpi: bad write to port 0x%03x (%d), val %#x\n", 168162597Shrs (int)OutPort, Width, Value); 169157245Snjl if (error == -1) 170157245Snjl return (AE_BAD_PARAMETER); 171157245Snjl } 172157245Snjl 17380071Smsmith switch (Width) { 17480071Smsmith case 8: 17580071Smsmith bus_space_write_1(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 17680071Smsmith break; 17780071Smsmith case 16: 17880071Smsmith bus_space_write_2(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 17980071Smsmith break; 18080071Smsmith case 32: 18180071Smsmith bus_space_write_4(ACPI_BUS_SPACE_IO, ACPI_BUS_HANDLE, OutPort, Value); 18280071Smsmith break; 18380071Smsmith default: 18480071Smsmith /* debug trap goes here */ 18592666Speter break; 18680071Smsmith } 18767760Smsmith 188128225Snjl return (AE_OK); 18967760Smsmith} 19067760Smsmith 19167760SmsmithACPI_STATUS 192128225SnjlAcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Register, void *Value, 193128225Snjl UINT32 Width) 19467760Smsmith{ 19580071Smsmith u_int32_t byte_width = Width / 8; 19680071Smsmith u_int32_t val; 19767760Smsmith 19867760Smsmith if (!pci_cfgregopen()) 199128225Snjl return (AE_NOT_EXIST); 20067760Smsmith 201128225Snjl val = pci_cfgregread(PciId->Bus, PciId->Device, PciId->Function, Register, 202128225Snjl byte_width); 20380071Smsmith switch (Width) { 20480071Smsmith case 8: 20580071Smsmith *(u_int8_t *)Value = val & 0xff; 20680071Smsmith break; 20780071Smsmith case 16: 20880071Smsmith *(u_int16_t *)Value = val & 0xffff; 20980071Smsmith break; 21080071Smsmith case 32: 21180071Smsmith *(u_int32_t *)Value = val; 21280071Smsmith break; 21380071Smsmith default: 21480071Smsmith /* debug trap goes here */ 21592666Speter break; 21680071Smsmith } 217157452Snjl 218128225Snjl return (AE_OK); 21967760Smsmith} 22067760Smsmith 22180071Smsmith 22267760SmsmithACPI_STATUS 223128225SnjlAcpiOsWritePciConfiguration (ACPI_PCI_ID *PciId, UINT32 Register, 224128225Snjl ACPI_INTEGER Value, UINT32 Width) 22567760Smsmith{ 22680071Smsmith u_int32_t byte_width = Width / 8; 22767760Smsmith 22867760Smsmith if (!pci_cfgregopen()) 229128225Snjl return (AE_NOT_EXIST); 23067760Smsmith 231128225Snjl pci_cfgregwrite(PciId->Bus, PciId->Device, PciId->Function, Register, 232128225Snjl Value, byte_width); 23380071Smsmith 234128225Snjl return (AE_OK); 23567760Smsmith} 236114246Snjl 237114246Snjl/* 238114246Snjl * Depth-first recursive case for finding the bus, given the slot/function. 239114246Snjl */ 240114246Snjlstatic int 241114246Snjlacpi_bus_number(ACPI_HANDLE root, ACPI_HANDLE curr, ACPI_PCI_ID *PciId) 242114246Snjl{ 243114246Snjl ACPI_HANDLE parent; 244128225Snjl ACPI_STATUS status; 245114246Snjl ACPI_OBJECT_TYPE type; 246114246Snjl UINT32 adr; 247114246Snjl int bus, slot, func, class, subclass, header; 248114246Snjl 249128225Snjl /* Try to get the _BBN object of the root, otherwise assume it is 0. */ 250114246Snjl bus = 0; 251114246Snjl if (root == curr) { 252128225Snjl status = acpi_GetInteger(root, "_BBN", &bus); 253128225Snjl if (ACPI_FAILURE(status) && bootverbose) 254128225Snjl printf("acpi_bus_number: root bus has no _BBN, assuming 0\n"); 255114246Snjl return (bus); 256114246Snjl } 257128225Snjl status = AcpiGetParent(curr, &parent); 258128225Snjl if (ACPI_FAILURE(status)) 259128225Snjl return (bus); 260157452Snjl 261128225Snjl /* First, recurse up the tree until we find the host bus. */ 262114246Snjl bus = acpi_bus_number(root, parent, PciId); 263114246Snjl 264128225Snjl /* Validate parent bus device type. */ 265114246Snjl if (ACPI_FAILURE(AcpiGetType(parent, &type)) || type != ACPI_TYPE_DEVICE) { 266128225Snjl printf("acpi_bus_number: not a device, type %d\n", type); 267128225Snjl return (bus); 268114246Snjl } 269128225Snjl 270128225Snjl /* Get the parent's slot and function. */ 271128225Snjl status = acpi_GetInteger(parent, "_ADR", &adr); 272170143Snjl if (ACPI_FAILURE(status)) 273128225Snjl return (bus); 274114246Snjl slot = ACPI_HIWORD(adr); 275114246Snjl func = ACPI_LOWORD(adr); 276114246Snjl 277114246Snjl /* Is this a PCI-PCI or Cardbus-PCI bridge? */ 278114246Snjl class = pci_cfgregread(bus, slot, func, PCIR_CLASS, 1); 279114246Snjl if (class != PCIC_BRIDGE) 280128225Snjl return (bus); 281114246Snjl subclass = pci_cfgregread(bus, slot, func, PCIR_SUBCLASS, 1); 282128225Snjl 283128225Snjl /* Find the header type, masking off the multifunction bit. */ 284119539Sjhb header = pci_cfgregread(bus, slot, func, PCIR_HDRTYPE, 1) & PCIM_HDRTYPE; 285119539Sjhb if (header == PCIM_HDRTYPE_BRIDGE && subclass == PCIS_BRIDGE_PCI) 286128225Snjl bus = pci_cfgregread(bus, slot, func, PCIR_SECBUS_1, 1); 287170143Snjl else if (header == PCIM_HDRTYPE_CARDBUS && subclass == PCIS_BRIDGE_CARDBUS) 288128225Snjl bus = pci_cfgregread(bus, slot, func, PCIR_SECBUS_2, 1); 289114246Snjl return (bus); 290114246Snjl} 291114246Snjl 292114246Snjl/* 293114246Snjl * Find the bus number for a device 294114246Snjl * 295114246Snjl * rhandle: handle for the root bus 296114246Snjl * chandle: handle for the device 297114246Snjl * PciId: pointer to device slot and function, we fill out bus 298114246Snjl */ 299114246Snjlvoid 300128225SnjlAcpiOsDerivePciId(ACPI_HANDLE rhandle, ACPI_HANDLE chandle, ACPI_PCI_ID **PciId) 301114246Snjl{ 302114246Snjl ACPI_HANDLE parent; 303128225Snjl ACPI_STATUS status; 304114246Snjl int bus; 305114246Snjl 306114246Snjl if (pci_cfgregopen() == 0) 307128225Snjl panic("AcpiOsDerivePciId unable to initialize pci bus"); 308114246Snjl 309114246Snjl /* Try to read _BBN for bus number if we're at the root */ 310114246Snjl bus = 0; 311114246Snjl if (rhandle == chandle) { 312128225Snjl status = acpi_GetInteger(rhandle, "_BBN", &bus); 313128225Snjl if (ACPI_FAILURE(status) && bootverbose) 314128225Snjl printf("AcpiOsDerivePciId: root bus has no _BBN, assuming 0\n"); 315114246Snjl } 316128225Snjl 317114246Snjl /* 318114246Snjl * Get the parent handle and call the recursive case. It is not 319114246Snjl * clear why we seem to be getting a chandle that points to a child 320114246Snjl * of the desired slot/function but passing in the parent handle 321114246Snjl * here works. 322114246Snjl */ 323114246Snjl if (ACPI_SUCCESS(AcpiGetParent(chandle, &parent))) 324128225Snjl bus = acpi_bus_number(rhandle, parent, *PciId); 325114246Snjl (*PciId)->Bus = bus; 326114246Snjl if (bootverbose) { 327170143Snjl printf("AcpiOsDerivePciId: %s -> bus %d dev %d func %d\n", 328170143Snjl acpi_name(chandle), (*PciId)->Bus, (*PciId)->Device, 329170143Snjl (*PciId)->Function); 330114246Snjl } 331114246Snjl} 332