Author: andrew
Date: Thu Dec  3 11:24:11 2015
New Revision: 291689
URL: https://svnweb.freebsd.org/changeset/base/291689

Log:
  Add support for a generic AHCI attachment. This allows us to attach to a
  typically memory mapped bus, for example on the AMD Opteron A1100 the AHCI
  device is mapped in the CPUs address space, and not through a PCI
  controller.
  
  Further work is needed for this to work with ACPI as this is expected to be
  common on ARMv8 servers.
  
  Reviewed by:  mav, mmel
  Obtained from:        mmel, ABT Systems Ltd
  Relnotes:     yes
  Sponsored by: SoftIron Inc
  Differential Revision:        https://reviews.freebsd.org/D4269

Added:
  head/sys/dev/ahci/ahci_generic.c
     - copied, changed from r291244, head/sys/dev/ahci/ahci_pci.c
Modified:
  head/sys/conf/files.arm64

Modified: head/sys/conf/files.arm64
==============================================================================
--- head/sys/conf/files.arm64   Thu Dec  3 11:14:14 2015        (r291688)
+++ head/sys/conf/files.arm64   Thu Dec  3 11:24:11 2015        (r291689)
@@ -57,6 +57,7 @@ arm64/cloudabi64/cloudabi64_sysvec.c  opt
 crypto/blowfish/bf_enc.c       optional        crypto | ipsec
 crypto/des/des_enc.c           optional        crypto | ipsec | netsmb
 dev/acpica/acpi_if.m           optional        acpi
+dev/ahci/ahci_generic.c                optional ahci fdt
 dev/fdt/fdt_arm64.c            optional        fdt
 dev/hwpmc/hwpmc_arm64.c                optional        hwpmc
 dev/hwpmc/hwpmc_arm64_md.c     optional        hwpmc

Copied and modified: head/sys/dev/ahci/ahci_generic.c (from r291244, 
head/sys/dev/ahci/ahci_pci.c)
==============================================================================
--- head/sys/dev/ahci/ahci_pci.c        Tue Nov 24 09:45:36 2015        
(r291244, copy source)
+++ head/sys/dev/ahci/ahci_generic.c    Thu Dec  3 11:24:11 2015        
(r291689)
@@ -37,559 +37,83 @@ __FBSDID("$FreeBSD$");
 #include <sys/malloc.h>
 #include <sys/lock.h>
 #include <sys/mutex.h>
-#include <machine/stdarg.h>
-#include <machine/resource.h>
-#include <machine/bus.h>
 #include <sys/rman.h>
-#include <dev/pci/pcivar.h>
-#include <dev/pci/pcireg.h>
-#include "ahci.h"
-
-static int force_ahci = 1;
-TUNABLE_INT("hw.ahci.force", &force_ahci);
-
-static const struct {
-       uint32_t        id;
-       uint8_t         rev;
-       const char      *name;
-       int             quirks;
-} ahci_ids[] = {
-       {0x43801002, 0x00, "AMD SB600",
-           AHCI_Q_NOMSI | AHCI_Q_ATI_PMP_BUG | AHCI_Q_MAXIO_64K},
-       {0x43901002, 0x00, "AMD SB7x0/SB8x0/SB9x0",
-           AHCI_Q_ATI_PMP_BUG | AHCI_Q_1MSI},
-       {0x43911002, 0x00, "AMD SB7x0/SB8x0/SB9x0",
-           AHCI_Q_ATI_PMP_BUG | AHCI_Q_1MSI},
-       {0x43921002, 0x00, "AMD SB7x0/SB8x0/SB9x0",
-           AHCI_Q_ATI_PMP_BUG | AHCI_Q_1MSI},
-       {0x43931002, 0x00, "AMD SB7x0/SB8x0/SB9x0",
-           AHCI_Q_ATI_PMP_BUG | AHCI_Q_1MSI},
-       {0x43941002, 0x00, "AMD SB7x0/SB8x0/SB9x0",
-           AHCI_Q_ATI_PMP_BUG | AHCI_Q_1MSI},
-       /* Not sure SB8x0/SB9x0 needs this quirk. Be conservative though */
-       {0x43951002, 0x00, "AMD SB8x0/SB9x0",   AHCI_Q_ATI_PMP_BUG},
-       {0x78001022, 0x00, "AMD Hudson-2",      0},
-       {0x78011022, 0x00, "AMD Hudson-2",      0},
-       {0x78021022, 0x00, "AMD Hudson-2",      0},
-       {0x78031022, 0x00, "AMD Hudson-2",      0},
-       {0x78041022, 0x00, "AMD Hudson-2",      0},
-       {0x06111b21, 0x00, "ASMedia ASM2106",   0},
-       {0x06121b21, 0x00, "ASMedia ASM1061",   0},
-       {0x26528086, 0x00, "Intel ICH6",        AHCI_Q_NOFORCE},
-       {0x26538086, 0x00, "Intel ICH6M",       AHCI_Q_NOFORCE},
-       {0x26818086, 0x00, "Intel ESB2",        0},
-       {0x26828086, 0x00, "Intel ESB2",        0},
-       {0x26838086, 0x00, "Intel ESB2",        0},
-       {0x27c18086, 0x00, "Intel ICH7",        0},
-       {0x27c38086, 0x00, "Intel ICH7",        0},
-       {0x27c58086, 0x00, "Intel ICH7M",       0},
-       {0x27c68086, 0x00, "Intel ICH7M",       0},
-       {0x28218086, 0x00, "Intel ICH8",        0},
-       {0x28228086, 0x00, "Intel ICH8",        0},
-       {0x28248086, 0x00, "Intel ICH8",        0},
-       {0x28298086, 0x00, "Intel ICH8M",       0},
-       {0x282a8086, 0x00, "Intel ICH8M",       0},
-       {0x29228086, 0x00, "Intel ICH9",        0},
-       {0x29238086, 0x00, "Intel ICH9",        0},
-       {0x29248086, 0x00, "Intel ICH9",        0},
-       {0x29258086, 0x00, "Intel ICH9",        0},
-       {0x29278086, 0x00, "Intel ICH9",        0},
-       {0x29298086, 0x00, "Intel ICH9M",       0},
-       {0x292a8086, 0x00, "Intel ICH9M",       0},
-       {0x292b8086, 0x00, "Intel ICH9M",       0},
-       {0x292c8086, 0x00, "Intel ICH9M",       0},
-       {0x292f8086, 0x00, "Intel ICH9M",       0},
-       {0x294d8086, 0x00, "Intel ICH9",        0},
-       {0x294e8086, 0x00, "Intel ICH9M",       0},
-       {0x3a058086, 0x00, "Intel ICH10",       0},
-       {0x3a228086, 0x00, "Intel ICH10",       0},
-       {0x3a258086, 0x00, "Intel ICH10",       0},
-       {0x3b228086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x3b238086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x3b258086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x3b298086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x3b2c8086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x3b2f8086, 0x00, "Intel 5 Series/3400 Series",        0},
-       {0x1c028086, 0x00, "Intel Cougar Point",        0},
-       {0x1c038086, 0x00, "Intel Cougar Point",        0},
-       {0x1c048086, 0x00, "Intel Cougar Point",        0},
-       {0x1c058086, 0x00, "Intel Cougar Point",        0},
-       {0x1d028086, 0x00, "Intel Patsburg",    0},
-       {0x1d048086, 0x00, "Intel Patsburg",    0},
-       {0x1d068086, 0x00, "Intel Patsburg",    0},
-       {0x28268086, 0x00, "Intel Patsburg (RAID)",     0},
-       {0x1e028086, 0x00, "Intel Panther Point",       0},
-       {0x1e038086, 0x00, "Intel Panther Point",       0},
-       {0x1e048086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1e058086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1e068086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1e078086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1e0e8086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1e0f8086, 0x00, "Intel Panther Point (RAID)",        0},
-       {0x1f228086, 0x00, "Intel Avoton",      0},
-       {0x1f238086, 0x00, "Intel Avoton",      0},
-       {0x1f248086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f258086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f268086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f278086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f2e8086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f2f8086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f328086, 0x00, "Intel Avoton",      0},
-       {0x1f338086, 0x00, "Intel Avoton",      0},
-       {0x1f348086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f358086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f368086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f378086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f3e8086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x1f3f8086, 0x00, "Intel Avoton (RAID)",       0},
-       {0x23a38086, 0x00, "Intel Coleto Creek",        0},
-       {0x28238086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x28278086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x8c028086, 0x00, "Intel Lynx Point",  0},
-       {0x8c038086, 0x00, "Intel Lynx Point",  0},
-       {0x8c048086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c058086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c068086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c078086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c0e8086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c0f8086, 0x00, "Intel Lynx Point (RAID)",   0},
-       {0x8c828086, 0x00, "Intel Wildcat Point",       0},
-       {0x8c838086, 0x00, "Intel Wildcat Point",       0},
-       {0x8c848086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8c858086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8c868086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8c878086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8c8e8086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8c8f8086, 0x00, "Intel Wildcat Point (RAID)",        0},
-       {0x8d028086, 0x00, "Intel Wellsburg",   0},
-       {0x8d048086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x8d068086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x8d628086, 0x00, "Intel Wellsburg",   0},
-       {0x8d648086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x8d668086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x8d6e8086, 0x00, "Intel Wellsburg (RAID)",    0},
-       {0x9c028086, 0x00, "Intel Lynx Point-LP",       0},
-       {0x9c038086, 0x00, "Intel Lynx Point-LP",       0},
-       {0x9c048086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x9c058086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x9c068086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x9c078086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x9c0e8086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x9c0f8086, 0x00, "Intel Lynx Point-LP (RAID)",        0},
-       {0x23238086, 0x00, "Intel DH89xxCC",    0},
-       {0x2360197b, 0x00, "JMicron JMB360",    0},
-       {0x2361197b, 0x00, "JMicron JMB361",    AHCI_Q_NOFORCE},
-       {0x2362197b, 0x00, "JMicron JMB362",    0},
-       {0x2363197b, 0x00, "JMicron JMB363",    AHCI_Q_NOFORCE},
-       {0x2365197b, 0x00, "JMicron JMB365",    AHCI_Q_NOFORCE},
-       {0x2366197b, 0x00, "JMicron JMB366",    AHCI_Q_NOFORCE},
-       {0x2368197b, 0x00, "JMicron JMB368",    AHCI_Q_NOFORCE},
-       {0x611111ab, 0x00, "Marvell 88SE6111",  AHCI_Q_NOFORCE | AHCI_Q_NOPMP |
-           AHCI_Q_1CH | AHCI_Q_EDGEIS},
-       {0x612111ab, 0x00, "Marvell 88SE6121",  AHCI_Q_NOFORCE | AHCI_Q_NOPMP |
-           AHCI_Q_2CH | AHCI_Q_EDGEIS | AHCI_Q_NONCQ | AHCI_Q_NOCOUNT},
-       {0x614111ab, 0x00, "Marvell 88SE6141",  AHCI_Q_NOFORCE | AHCI_Q_NOPMP |
-           AHCI_Q_4CH | AHCI_Q_EDGEIS | AHCI_Q_NONCQ | AHCI_Q_NOCOUNT},
-       {0x614511ab, 0x00, "Marvell 88SE6145",  AHCI_Q_NOFORCE | AHCI_Q_NOPMP |
-           AHCI_Q_4CH | AHCI_Q_EDGEIS | AHCI_Q_NONCQ | AHCI_Q_NOCOUNT},
-       {0x91201b4b, 0x00, "Marvell 88SE912x",  AHCI_Q_EDGEIS},
-       {0x91231b4b, 0x11, "Marvell 88SE912x",  AHCI_Q_ALTSIG},
-       {0x91231b4b, 0x00, "Marvell 88SE912x",  AHCI_Q_EDGEIS|AHCI_Q_SATA2},
-       {0x91251b4b, 0x00, "Marvell 88SE9125",  0},
-       {0x91281b4b, 0x00, "Marvell 88SE9128",  AHCI_Q_ALTSIG},
-       {0x91301b4b, 0x00, "Marvell 88SE9130",  AHCI_Q_ALTSIG},
-       {0x91721b4b, 0x00, "Marvell 88SE9172",  0},
-       {0x91821b4b, 0x00, "Marvell 88SE9182",  0},
-       {0x91831b4b, 0x00, "Marvell 88SS9183",  0},
-       {0x91a01b4b, 0x00, "Marvell 88SE91Ax",  0},
-       {0x92151b4b, 0x00, "Marvell 88SE9215",  0},
-       {0x92201b4b, 0x00, "Marvell 88SE9220",  AHCI_Q_ALTSIG},
-       {0x92301b4b, 0x00, "Marvell 88SE9230",  AHCI_Q_ALTSIG},
-       {0x92351b4b, 0x00, "Marvell 88SE9235",  0},
-       {0x06201103, 0x00, "HighPoint RocketRAID 620",  0},
-       {0x06201b4b, 0x00, "HighPoint RocketRAID 620",  0},
-       {0x06221103, 0x00, "HighPoint RocketRAID 622",  0},
-       {0x06221b4b, 0x00, "HighPoint RocketRAID 622",  0},
-       {0x06401103, 0x00, "HighPoint RocketRAID 640",  0},
-       {0x06401b4b, 0x00, "HighPoint RocketRAID 640",  0},
-       {0x06441103, 0x00, "HighPoint RocketRAID 644",  0},
-       {0x06441b4b, 0x00, "HighPoint RocketRAID 644",  0},
-       {0x06411103, 0x00, "HighPoint RocketRAID 640L", 0},
-       {0x06421103, 0x00, "HighPoint RocketRAID 642L", 0},
-       {0x06451103, 0x00, "HighPoint RocketRAID 644L", 0},
-       {0x044c10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x044d10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x044e10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x044f10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x045c10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x045d10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x045e10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x045f10de, 0x00, "NVIDIA MCP65",      AHCI_Q_NOAA},
-       {0x055010de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055110de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055210de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055310de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055410de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055510de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055610de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055710de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055810de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055910de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055A10de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x055B10de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x058410de, 0x00, "NVIDIA MCP67",      AHCI_Q_NOAA},
-       {0x07f010de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f110de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f210de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f310de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f410de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f510de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f610de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f710de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f810de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07f910de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07fa10de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x07fb10de, 0x00, "NVIDIA MCP73",      AHCI_Q_NOAA},
-       {0x0ad010de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad110de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad210de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad310de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad410de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad510de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad610de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad710de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad810de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ad910de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ada10de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0adb10de, 0x00, "NVIDIA MCP77",      AHCI_Q_NOAA},
-       {0x0ab410de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0ab510de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0ab610de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0ab710de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0ab810de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0ab910de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0aba10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0abb10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0abc10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0abd10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0abe10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0abf10de, 0x00, "NVIDIA MCP79",      AHCI_Q_NOAA},
-       {0x0d8410de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8510de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOFORCE|AHCI_Q_NOAA},
-       {0x0d8610de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8710de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8810de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8910de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8a10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8b10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8c10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8d10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8e10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x0d8f10de, 0x00, "NVIDIA MCP89",      AHCI_Q_NOAA},
-       {0x3781105a, 0x00, "Promise TX8660",    0},
-       {0x33491106, 0x00, "VIA VT8251",        AHCI_Q_NOPMP|AHCI_Q_NONCQ},
-       {0x62871106, 0x00, "VIA VT8251",        AHCI_Q_NOPMP|AHCI_Q_NONCQ},
-       {0x11841039, 0x00, "SiS 966",           0},
-       {0x11851039, 0x00, "SiS 968",           0},
-       {0x01861039, 0x00, "SiS 968",           0},
-       {0xa01c177d, 0x00, "ThunderX",          AHCI_Q_ABAR0|AHCI_Q_1MSI},
-       {0x00311c36, 0x00, "Annapurna",         
AHCI_Q_FORCE_PI|AHCI_Q_RESTORE_CAP},
-       {0x00000000, 0x00, NULL,                0}
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+#include <dev/ahci/ahci.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+static struct ofw_compat_data compat_data[] = {
+       {"generic-ahci",        1},
+       {"snps,dwc-ahci",       1},
+       {NULL,                  0}
 };
 
 static int
-ahci_pci_ctlr_reset(device_t dev)
+ahci_gen_ctlr_reset(device_t dev)
 {
 
-       if (pci_read_config(dev, PCIR_DEVVENDOR, 4) == 0x28298086 &&
-           (pci_read_config(dev, 0x92, 1) & 0xfe) == 0x04)
-               pci_write_config(dev, 0x92, 0x01, 1);
        return ahci_ctlr_reset(dev);
 }
 
 static int
 ahci_probe(device_t dev)
 {
-       char buf[64];
-       int i, valid = 0;
-       uint32_t devid = pci_get_devid(dev);
-       uint8_t revid = pci_get_revid(dev);
-
-       /*
-        * Ensure it is not a PCI bridge (some vendors use
-        * the same PID and VID in PCI bridge and AHCI cards).
-        */
-       if (pci_get_class(dev) == PCIC_BRIDGE)
-               return (ENXIO);
 
-       /* Is this a possible AHCI candidate? */
-       if (pci_get_class(dev) == PCIC_STORAGE &&
-           pci_get_subclass(dev) == PCIS_STORAGE_SATA &&
-           pci_get_progif(dev) == PCIP_STORAGE_SATA_AHCI_1_0)
-               valid = 1;
-       else if (pci_get_class(dev) == PCIC_STORAGE &&
-           pci_get_subclass(dev) == PCIS_STORAGE_RAID)
-               valid = 2;
-       /* Is this a known AHCI chip? */
-       for (i = 0; ahci_ids[i].id != 0; i++) {
-               if (ahci_ids[i].id == devid &&
-                   ahci_ids[i].rev <= revid &&
-                   (valid || (force_ahci == 1 &&
-                    !(ahci_ids[i].quirks & AHCI_Q_NOFORCE)))) {
-                       /* Do not attach JMicrons with single PCI function. */
-                       if (pci_get_vendor(dev) == 0x197b &&
-                           (pci_read_config(dev, 0xdf, 1) & 0x40) == 0)
-                               return (ENXIO);
-                       snprintf(buf, sizeof(buf), "%s AHCI SATA controller",
-                           ahci_ids[i].name);
-                       device_set_desc_copy(dev, buf);
-                       return (BUS_PROBE_DEFAULT);
-               }
-       }
-       if (valid != 1)
+       if (!ofw_bus_status_okay(dev))
                return (ENXIO);
-       device_set_desc_copy(dev, "AHCI SATA controller");
-       return (BUS_PROBE_DEFAULT);
-}
-
-static int
-ahci_ata_probe(device_t dev)
-{
-       char buf[64];
-       int i;
-       uint32_t devid = pci_get_devid(dev);
-       uint8_t revid = pci_get_revid(dev);
 
-       if ((intptr_t)device_get_ivars(dev) >= 0)
+       if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
                return (ENXIO);
-       /* Is this a known AHCI chip? */
-       for (i = 0; ahci_ids[i].id != 0; i++) {
-               if (ahci_ids[i].id == devid &&
-                   ahci_ids[i].rev <= revid) {
-                       snprintf(buf, sizeof(buf), "%s AHCI SATA controller",
-                           ahci_ids[i].name);
-                       device_set_desc_copy(dev, buf);
-                       return (BUS_PROBE_DEFAULT);
-               }
-       }
+
        device_set_desc_copy(dev, "AHCI SATA controller");
        return (BUS_PROBE_DEFAULT);
 }
 
 static int
-ahci_pci_read_msix_bars(device_t dev, uint8_t *table_bar, uint8_t *pba_bar)
-{
-       int cap_offset = 0, ret;
-       uint32_t val;
-
-       if ((table_bar == NULL) || (pba_bar == NULL))
-               return (EINVAL);
-
-       ret = pci_find_cap(dev, PCIY_MSIX, &cap_offset);
-       if (ret != 0)
-               return (EINVAL);
-
-       val = pci_read_config(dev, cap_offset + PCIR_MSIX_TABLE, 4);
-       *table_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
-
-       val = pci_read_config(dev, cap_offset + PCIR_MSIX_PBA, 4);
-       *pba_bar = PCIR_BAR(val & PCIM_MSIX_BIR_MASK);
-
-       return (0);
-}
-
-static int
-ahci_pci_attach(device_t dev)
+ahci_gen_attach(device_t dev)
 {
        struct ahci_controller *ctlr = device_get_softc(dev);
-       int     error, i;
-       uint32_t devid = pci_get_devid(dev);
-       uint8_t revid = pci_get_revid(dev);
-       int msi_count, msix_count;
-       uint8_t table_bar = 0, pba_bar = 0;
-
-       msi_count = pci_msi_count(dev);
-       msix_count = pci_msix_count(dev);
-
-       i = 0;
-       while (ahci_ids[i].id != 0 &&
-           (ahci_ids[i].id != devid ||
-            ahci_ids[i].rev > revid))
-               i++;
-       ctlr->quirks = ahci_ids[i].quirks;
-       /* Limit speed for my onboard JMicron external port.
-        * It is not eSATA really, limit to SATA 1 */
-       if (pci_get_devid(dev) == 0x2363197b &&
-           pci_get_subvendor(dev) == 0x1043 &&
-           pci_get_subdevice(dev) == 0x81e4)
-               ctlr->quirks |= AHCI_Q_SATA1_UNIT0;
-       ctlr->vendorid = pci_get_vendor(dev);
-       ctlr->deviceid = pci_get_device(dev);
-       ctlr->subvendorid = pci_get_subvendor(dev);
-       ctlr->subdeviceid = pci_get_subdevice(dev);
-
-       /* Default AHCI Base Address is BAR(5), Cavium uses BAR(0) */
-       if (ctlr->quirks & AHCI_Q_ABAR0)
-               ctlr->r_rid = PCIR_BAR(0);
-       else
-               ctlr->r_rid = PCIR_BAR(5);
-       if (!(ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
-           &ctlr->r_rid, RF_ACTIVE)))
-               return ENXIO;
-
-       /* Read MSI-x BAR IDs if supported */
-       if (msix_count > 0) {
-               error = ahci_pci_read_msix_bars(dev, &table_bar, &pba_bar);
-               if (error == 0) {
-                       ctlr->r_msix_tab_rid = table_bar;
-                       ctlr->r_msix_pba_rid = pba_bar;
-               } else {
-                       /* Failed to read BARs, disable MSI-x */
-                       msix_count = 0;
-               }
-       }
+       int     error;
 
-       /* Allocate resources for MSI-x table and PBA */
-       if (msix_count > 0) {
-               /*
-                * Allocate new MSI-x table only if not
-                * allocated before.
-                */
-               ctlr->r_msix_table = NULL;
-               if (ctlr->r_msix_tab_rid != ctlr->r_rid) {
-                       /* Separate BAR for MSI-x */
-                       ctlr->r_msix_table = bus_alloc_resource_any(dev, 
SYS_RES_MEMORY,
-                           &ctlr->r_msix_tab_rid, RF_ACTIVE);
-                       if (ctlr->r_msix_table == NULL) {
-                               ahci_free_mem(dev);
-                               return (ENXIO);
-                       }
-               }
-
-               /*
-                * Allocate new PBA table only if not
-                * allocated before.
-                */
-               ctlr->r_msix_pba = NULL;
-               if ((ctlr->r_msix_pba_rid != ctlr->r_msix_tab_rid) &&
-                   (ctlr->r_msix_pba_rid != ctlr->r_rid)) {
-                       /* Separate BAR for PBA */
-                       ctlr->r_msix_pba = bus_alloc_resource_any(dev, 
SYS_RES_MEMORY,
-                           &ctlr->r_msix_pba_rid, RF_ACTIVE);
-                       if (ctlr->r_msix_pba == NULL) {
-                               ahci_free_mem(dev);
-                               return (ENXIO);
-                       }
-               }
-       }
+       ctlr->r_rid = 0;
+       ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ctlr->r_rid,
+           RF_ACTIVE);
+       if (ctlr->r_mem == NULL)
+               return (ENXIO);
 
-       pci_enable_busmaster(dev);
-       /* Reset controller */
-       if ((error = ahci_pci_ctlr_reset(dev)) != 0) {
-               ahci_free_mem(dev);
-               return (error);
-       };
-
-       /* Setup interrupts. */
-
-       /* Setup MSI register parameters */
-       /* Process hints. */
-       if (ctlr->quirks & AHCI_Q_NOMSI)
-               ctlr->msi = 0;
-       else if (ctlr->quirks & AHCI_Q_1MSI)
-               ctlr->msi = 1;
-       else
-               ctlr->msi = 2;
-       resource_int_value(device_get_name(dev),
-           device_get_unit(dev), "msi", &ctlr->msi);
+       /* Setup controller defaults. */
        ctlr->numirqs = 1;
-       if (msi_count == 0 && msix_count == 0)
-               ctlr->msi = 0;
-       if (ctlr->msi < 0)
-               ctlr->msi = 0;
-       else if (ctlr->msi == 1) {
-               msi_count = min(1, msi_count);
-               msix_count = min(1, msix_count);
-       } else if (ctlr->msi > 1)
-               ctlr->msi = 2;
-
-       /* Allocate MSI/MSI-x if needed/present. */
-       if (ctlr->msi > 0) {
-               error = ENXIO;
-
-               /* Try to allocate MSI-x first */
-               if (msix_count > 0) {
-                       error = pci_alloc_msix(dev, &msix_count);
-                       if (error == 0)
-                               ctlr->numirqs = msix_count;
-               }
-
-               /*
-                * Try to allocate MSI if msi_count is greater than 0
-                * and if MSI-x allocation failed.
-                */
-               if ((error != 0) && (msi_count > 0)) {
-                       error = pci_alloc_msi(dev, &msi_count);
-                       if (error == 0)
-                               ctlr->numirqs = msi_count;
-               }
-
-               /* Both MSI and MSI-x allocations failed */
-               if (error != 0) {
-                       ctlr->msi = 0;
-                       device_printf(dev, "Failed to allocate MSI/MSI-x, "
-                           "falling back to INTx\n");
-               }
-       }
 
-       error = ahci_attach(dev);
+       /* Reset controller */
+       if ((error = ahci_gen_ctlr_reset(dev)) == 0)
+               error = ahci_attach(dev);
+
        if (error != 0) {
-               if (ctlr->msi > 0)
-                       pci_release_msi(dev);
-               ahci_free_mem(dev);
+               if (ctlr->r_mem != NULL)
+                       bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid,
+                           ctlr->r_mem);
        }
        return error;
 }
 
 static int
-ahci_pci_detach(device_t dev)
+ahci_gen_detach(device_t dev)
 {
 
        ahci_detach(dev);
-       pci_release_msi(dev);
        return (0);
 }
 
-static int
-ahci_pci_suspend(device_t dev)
-{
-       struct ahci_controller *ctlr = device_get_softc(dev);
-
-       bus_generic_suspend(dev);
-       /* Disable interupts, so the state change(s) doesn't trigger */
-       ATA_OUTL(ctlr->r_mem, AHCI_GHC,
-            ATA_INL(ctlr->r_mem, AHCI_GHC) & (~AHCI_GHC_IE));
-       return 0;
-}
-
-static int
-ahci_pci_resume(device_t dev)
-{
-       int res;
-
-       if ((res = ahci_pci_ctlr_reset(dev)) != 0)
-               return (res);
-       ahci_ctlr_setup(dev);
-       return (bus_generic_resume(dev));
-}
-
-devclass_t ahci_devclass;
+static devclass_t ahci_gen_devclass;
 static device_method_t ahci_methods[] = {
        DEVMETHOD(device_probe,     ahci_probe),
-       DEVMETHOD(device_attach,    ahci_pci_attach),
-       DEVMETHOD(device_detach,    ahci_pci_detach),
-       DEVMETHOD(device_suspend,   ahci_pci_suspend),
-       DEVMETHOD(device_resume,    ahci_pci_resume),
+       DEVMETHOD(device_attach,    ahci_gen_attach),
+       DEVMETHOD(device_detach,    ahci_gen_detach),
        DEVMETHOD(bus_print_child,  ahci_print_child),
        DEVMETHOD(bus_alloc_resource,       ahci_alloc_resource),
        DEVMETHOD(bus_release_resource,     ahci_release_resource),
@@ -600,28 +124,8 @@ static device_method_t ahci_methods[] = 
        DEVMETHOD_END
 };
 static driver_t ahci_driver = {
-        "ahci",
-        ahci_methods,
-        sizeof(struct ahci_controller)
-};
-DRIVER_MODULE(ahci, pci, ahci_driver, ahci_devclass, NULL, NULL);
-static device_method_t ahci_ata_methods[] = {
-       DEVMETHOD(device_probe,     ahci_ata_probe),
-       DEVMETHOD(device_attach,    ahci_pci_attach),
-       DEVMETHOD(device_detach,    ahci_pci_detach),
-       DEVMETHOD(device_suspend,   ahci_pci_suspend),
-       DEVMETHOD(device_resume,    ahci_pci_resume),
-       DEVMETHOD(bus_print_child,  ahci_print_child),
-       DEVMETHOD(bus_alloc_resource,       ahci_alloc_resource),
-       DEVMETHOD(bus_release_resource,     ahci_release_resource),
-       DEVMETHOD(bus_setup_intr,   ahci_setup_intr),
-       DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
-       DEVMETHOD(bus_child_location_str, ahci_child_location_str),
-       DEVMETHOD_END
-};
-static driver_t ahci_ata_driver = {
-        "ahci",
-        ahci_ata_methods,
-        sizeof(struct ahci_controller)
+       "ahci",
+       ahci_methods,
+       sizeof(struct ahci_controller)
 };
-DRIVER_MODULE(ahci, atapci, ahci_ata_driver, ahci_devclass, NULL, NULL);
+DRIVER_MODULE(ahci, simplebus, ahci_driver, ahci_gen_devclass, NULL, NULL);
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