linux/arch/alpha/kernel/smc37c93x.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

276 lines
6.2 KiB
C

/*
* SMC 37C93X initialization code
*/
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <asm/hwrpb.h>
#include <asm/io.h>
#include <asm/segment.h>
#define SMC_DEBUG 0
#if SMC_DEBUG
# define DBG_DEVS(args) printk args
#else
# define DBG_DEVS(args)
#endif
#define KB 1024
#define MB (1024*KB)
#define GB (1024*MB)
/* device "activate" register contents */
#define DEVICE_ON 1
#define DEVICE_OFF 0
/* configuration on/off keys */
#define CONFIG_ON_KEY 0x55
#define CONFIG_OFF_KEY 0xaa
/* configuration space device definitions */
#define FDC 0
#define IDE1 1
#define IDE2 2
#define PARP 3
#define SER1 4
#define SER2 5
#define RTCL 6
#define KYBD 7
#define AUXIO 8
/* Chip register offsets from base */
#define CONFIG_CONTROL 0x02
#define INDEX_ADDRESS 0x03
#define LOGICAL_DEVICE_NUMBER 0x07
#define DEVICE_ID 0x20
#define DEVICE_REV 0x21
#define POWER_CONTROL 0x22
#define POWER_MGMT 0x23
#define OSC 0x24
#define ACTIVATE 0x30
#define ADDR_HI 0x60
#define ADDR_LO 0x61
#define INTERRUPT_SEL 0x70
#define INTERRUPT_SEL_2 0x72 /* KYBD/MOUS only */
#define DMA_CHANNEL_SEL 0x74 /* FDC/PARP only */
#define FDD_MODE_REGISTER 0x90
#define FDD_OPTION_REGISTER 0x91
/* values that we read back that are expected ... */
#define VALID_DEVICE_ID 2
/* default device addresses */
#define KYBD_INTERRUPT 1
#define MOUS_INTERRUPT 12
#define COM2_BASE 0x2f8
#define COM2_INTERRUPT 3
#define COM1_BASE 0x3f8
#define COM1_INTERRUPT 4
#define PARP_BASE 0x3bc
#define PARP_INTERRUPT 7
static unsigned long __init SMCConfigState(unsigned long baseAddr)
{
unsigned char devId;
unsigned char devRev;
unsigned long configPort;
unsigned long indexPort;
unsigned long dataPort;
int i;
configPort = indexPort = baseAddr;
dataPort = configPort + 1;
#define NUM_RETRIES 5
for (i = 0; i < NUM_RETRIES; i++)
{
outb(CONFIG_ON_KEY, configPort);
outb(CONFIG_ON_KEY, configPort);
outb(DEVICE_ID, indexPort);
devId = inb(dataPort);
if (devId == VALID_DEVICE_ID) {
outb(DEVICE_REV, indexPort);
devRev = inb(dataPort);
break;
}
else
udelay(100);
}
return (i != NUM_RETRIES) ? baseAddr : 0L;
}
static void __init SMCRunState(unsigned long baseAddr)
{
outb(CONFIG_OFF_KEY, baseAddr);
}
static unsigned long __init SMCDetectUltraIO(void)
{
unsigned long baseAddr;
baseAddr = 0x3F0;
if ( ( baseAddr = SMCConfigState( baseAddr ) ) == 0x3F0 ) {
return( baseAddr );
}
baseAddr = 0x370;
if ( ( baseAddr = SMCConfigState( baseAddr ) ) == 0x370 ) {
return( baseAddr );
}
return( ( unsigned long )0 );
}
static void __init SMCEnableDevice(unsigned long baseAddr,
unsigned long device,
unsigned long portaddr,
unsigned long interrupt)
{
unsigned long indexPort;
unsigned long dataPort;
indexPort = baseAddr;
dataPort = baseAddr + 1;
outb(LOGICAL_DEVICE_NUMBER, indexPort);
outb(device, dataPort);
outb(ADDR_LO, indexPort);
outb(( portaddr & 0xFF ), dataPort);
outb(ADDR_HI, indexPort);
outb((portaddr >> 8) & 0xFF, dataPort);
outb(INTERRUPT_SEL, indexPort);
outb(interrupt, dataPort);
outb(ACTIVATE, indexPort);
outb(DEVICE_ON, dataPort);
}
static void __init SMCEnableKYBD(unsigned long baseAddr)
{
unsigned long indexPort;
unsigned long dataPort;
indexPort = baseAddr;
dataPort = baseAddr + 1;
outb(LOGICAL_DEVICE_NUMBER, indexPort);
outb(KYBD, dataPort);
outb(INTERRUPT_SEL, indexPort); /* Primary interrupt select */
outb(KYBD_INTERRUPT, dataPort);
outb(INTERRUPT_SEL_2, indexPort); /* Secondary interrupt select */
outb(MOUS_INTERRUPT, dataPort);
outb(ACTIVATE, indexPort);
outb(DEVICE_ON, dataPort);
}
static void __init SMCEnableFDC(unsigned long baseAddr)
{
unsigned long indexPort;
unsigned long dataPort;
unsigned char oldValue;
indexPort = baseAddr;
dataPort = baseAddr + 1;
outb(LOGICAL_DEVICE_NUMBER, indexPort);
outb(FDC, dataPort);
outb(FDD_MODE_REGISTER, indexPort);
oldValue = inb(dataPort);
oldValue |= 0x0E; /* Enable burst mode */
outb(oldValue, dataPort);
outb(INTERRUPT_SEL, indexPort); /* Primary interrupt select */
outb(0x06, dataPort );
outb(DMA_CHANNEL_SEL, indexPort); /* DMA channel select */
outb(0x02, dataPort);
outb(ACTIVATE, indexPort);
outb(DEVICE_ON, dataPort);
}
#if SMC_DEBUG
static void __init SMCReportDeviceStatus(unsigned long baseAddr)
{
unsigned long indexPort;
unsigned long dataPort;
unsigned char currentControl;
indexPort = baseAddr;
dataPort = baseAddr + 1;
outb(POWER_CONTROL, indexPort);
currentControl = inb(dataPort);
printk(currentControl & (1 << FDC)
? "\t+FDC Enabled\n" : "\t-FDC Disabled\n");
printk(currentControl & (1 << IDE1)
? "\t+IDE1 Enabled\n" : "\t-IDE1 Disabled\n");
printk(currentControl & (1 << IDE2)
? "\t+IDE2 Enabled\n" : "\t-IDE2 Disabled\n");
printk(currentControl & (1 << PARP)
? "\t+PARP Enabled\n" : "\t-PARP Disabled\n");
printk(currentControl & (1 << SER1)
? "\t+SER1 Enabled\n" : "\t-SER1 Disabled\n");
printk(currentControl & (1 << SER2)
? "\t+SER2 Enabled\n" : "\t-SER2 Disabled\n");
printk( "\n" );
}
#endif
int __init SMC93x_Init(void)
{
unsigned long SMCUltraBase;
unsigned long flags;
local_irq_save(flags);
if ((SMCUltraBase = SMCDetectUltraIO()) != 0UL) {
#if SMC_DEBUG
SMCReportDeviceStatus(SMCUltraBase);
#endif
SMCEnableDevice(SMCUltraBase, SER1, COM1_BASE, COM1_INTERRUPT);
DBG_DEVS(("SMC FDC37C93X: SER1 done\n"));
SMCEnableDevice(SMCUltraBase, SER2, COM2_BASE, COM2_INTERRUPT);
DBG_DEVS(("SMC FDC37C93X: SER2 done\n"));
SMCEnableDevice(SMCUltraBase, PARP, PARP_BASE, PARP_INTERRUPT);
DBG_DEVS(("SMC FDC37C93X: PARP done\n"));
/* On PC164, IDE on the SMC is not enabled;
CMD646 (PCI) on MB */
SMCEnableKYBD(SMCUltraBase);
DBG_DEVS(("SMC FDC37C93X: KYB done\n"));
SMCEnableFDC(SMCUltraBase);
DBG_DEVS(("SMC FDC37C93X: FDC done\n"));
#if SMC_DEBUG
SMCReportDeviceStatus(SMCUltraBase);
#endif
SMCRunState(SMCUltraBase);
local_irq_restore(flags);
printk("SMC FDC37C93X Ultra I/O Controller found @ 0x%lx\n",
SMCUltraBase);
return 1;
}
else {
local_irq_restore(flags);
DBG_DEVS(("No SMC FDC37C93X Ultra I/O Controller found\n"));
return 0;
}
}