korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-18 17:54:13 +08:00
Code Issues Packages Projects Releases Wiki Activity
adedc05e93
linux/arch/sparc/kernel/psycho_common.c
Greg Kroah-Hartman b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00

472 lines
14 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/* psycho_common.c: Code common to PSYCHO and derivative PCI controllers.
*
* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
*/
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <asm/upa.h>
#include "pci_impl.h"
#include "iommu_common.h"
#include "psycho_common.h"
#define PSYCHO_STRBUF_CTRL_DENAB 0x0000000000000002ULL
#define PSYCHO_STCERR_WRITE 0x0000000000000002ULL
#define PSYCHO_STCERR_READ 0x0000000000000001ULL
#define PSYCHO_STCTAG_PPN 0x0fffffff00000000ULL
#define PSYCHO_STCTAG_VPN 0x00000000ffffe000ULL
#define PSYCHO_STCTAG_VALID 0x0000000000000002ULL
#define PSYCHO_STCTAG_WRITE 0x0000000000000001ULL
#define PSYCHO_STCLINE_LINDX 0x0000000001e00000ULL
#define PSYCHO_STCLINE_SPTR 0x00000000001f8000ULL
#define PSYCHO_STCLINE_LADDR 0x0000000000007f00ULL
#define PSYCHO_STCLINE_EPTR 0x00000000000000fcULL
#define PSYCHO_STCLINE_VALID 0x0000000000000002ULL
#define PSYCHO_STCLINE_FOFN 0x0000000000000001ULL
static DEFINE_SPINLOCK(stc_buf_lock);
static unsigned long stc_error_buf[128];
static unsigned long stc_tag_buf[16];
static unsigned long stc_line_buf[16];
static void psycho_check_stc_error(struct pci_pbm_info *pbm)
{
unsigned long err_base, tag_base, line_base;
struct strbuf *strbuf = &pbm->stc;
u64 control;
int i;
if (!strbuf->strbuf_control)
return;
err_base = strbuf->strbuf_err_stat;
tag_base = strbuf->strbuf_tag_diag;
line_base = strbuf->strbuf_line_diag;
spin_lock(&stc_buf_lock);
/* This is __REALLY__ dangerous. When we put the streaming
* buffer into diagnostic mode to probe it's tags and error
* status, we _must_ clear all of the line tag valid bits
* before re-enabling the streaming buffer. If any dirty data
* lives in the STC when we do this, we will end up
* invalidating it before it has a chance to reach main
* memory.
*/
control = upa_readq(strbuf->strbuf_control);
upa_writeq(control | PSYCHO_STRBUF_CTRL_DENAB, strbuf->strbuf_control);
for (i = 0; i < 128; i++) {
u64 val;
val = upa_readq(err_base + (i * 8UL));
upa_writeq(0UL, err_base + (i * 8UL));
stc_error_buf[i] = val;
}
for (i = 0; i < 16; i++) {
stc_tag_buf[i] = upa_readq(tag_base + (i * 8UL));
stc_line_buf[i] = upa_readq(line_base + (i * 8UL));
upa_writeq(0UL, tag_base + (i * 8UL));
upa_writeq(0UL, line_base + (i * 8UL));
}
/* OK, state is logged, exit diagnostic mode. */
upa_writeq(control, strbuf->strbuf_control);
for (i = 0; i < 16; i++) {
int j, saw_error, first, last;
saw_error = 0;
first = i * 8;
last = first + 8;
for (j = first; j < last; j++) {
u64 errval = stc_error_buf[j];
if (errval != 0) {
saw_error++;
printk(KERN_ERR "%s: STC_ERR(%d)[wr(%d)"
"rd(%d)]\n",
pbm->name,
j,
(errval & PSYCHO_STCERR_WRITE) ? 1 : 0,
(errval & PSYCHO_STCERR_READ) ? 1 : 0);
}
}
if (saw_error != 0) {
u64 tagval = stc_tag_buf[i];
u64 lineval = stc_line_buf[i];
printk(KERN_ERR "%s: STC_TAG(%d)[PA(%016llx)VA(%08llx)"
"V(%d)W(%d)]\n",
pbm->name,
i,
((tagval & PSYCHO_STCTAG_PPN) >> 19UL),
(tagval & PSYCHO_STCTAG_VPN),
((tagval & PSYCHO_STCTAG_VALID) ? 1 : 0),
((tagval & PSYCHO_STCTAG_WRITE) ? 1 : 0));
printk(KERN_ERR "%s: STC_LINE(%d)[LIDX(%llx)SP(%llx)"
"LADDR(%llx)EP(%llx)V(%d)FOFN(%d)]\n",
pbm->name,
i,
((lineval & PSYCHO_STCLINE_LINDX) >> 21UL),
((lineval & PSYCHO_STCLINE_SPTR) >> 15UL),
((lineval & PSYCHO_STCLINE_LADDR) >> 8UL),
((lineval & PSYCHO_STCLINE_EPTR) >> 2UL),
((lineval & PSYCHO_STCLINE_VALID) ? 1 : 0),
((lineval & PSYCHO_STCLINE_FOFN) ? 1 : 0));
}
}
spin_unlock(&stc_buf_lock);
}
#define PSYCHO_IOMMU_TAG 0xa580UL
#define PSYCHO_IOMMU_DATA 0xa600UL
static void psycho_record_iommu_tags_and_data(struct pci_pbm_info *pbm,
u64 *tag, u64 *data)
{
int i;
for (i = 0; i < 16; i++) {
unsigned long base = pbm->controller_regs;
unsigned long off = i * 8UL;
tag[i] = upa_readq(base + PSYCHO_IOMMU_TAG+off);
data[i] = upa_readq(base + PSYCHO_IOMMU_DATA+off);
/* Now clear out the entry. */
upa_writeq(0, base + PSYCHO_IOMMU_TAG + off);
upa_writeq(0, base + PSYCHO_IOMMU_DATA + off);
}
}
#define PSYCHO_IOMMU_TAG_ERRSTS (0x3UL << 23UL)
#define PSYCHO_IOMMU_TAG_ERR (0x1UL << 22UL)
#define PSYCHO_IOMMU_TAG_WRITE (0x1UL << 21UL)
#define PSYCHO_IOMMU_TAG_STREAM (0x1UL << 20UL)
#define PSYCHO_IOMMU_TAG_SIZE (0x1UL << 19UL)
#define PSYCHO_IOMMU_TAG_VPAGE 0x7ffffULL
#define PSYCHO_IOMMU_DATA_VALID (1UL << 30UL)
#define PSYCHO_IOMMU_DATA_CACHE (1UL << 28UL)
#define PSYCHO_IOMMU_DATA_PPAGE 0xfffffffULL
static void psycho_dump_iommu_tags_and_data(struct pci_pbm_info *pbm,
u64 *tag, u64 *data)
{
int i;
for (i = 0; i < 16; i++) {
u64 tag_val, data_val;
const char *type_str;
tag_val = tag[i];
if (!(tag_val & PSYCHO_IOMMU_TAG_ERR))
continue;
data_val = data[i];
switch((tag_val & PSYCHO_IOMMU_TAG_ERRSTS) >> 23UL) {
case 0:
type_str = "Protection Error";
break;
case 1:
type_str = "Invalid Error";
break;
case 2:
type_str = "TimeOut Error";
break;
case 3:
default:
type_str = "ECC Error";
break;
}
printk(KERN_ERR "%s: IOMMU TAG(%d)[error(%s) wr(%d) "
"str(%d) sz(%dK) vpg(%08llx)]\n",
pbm->name, i, type_str,
((tag_val & PSYCHO_IOMMU_TAG_WRITE) ? 1 : 0),
((tag_val & PSYCHO_IOMMU_TAG_STREAM) ? 1 : 0),
((tag_val & PSYCHO_IOMMU_TAG_SIZE) ? 64 : 8),
(tag_val & PSYCHO_IOMMU_TAG_VPAGE) << IOMMU_PAGE_SHIFT);
printk(KERN_ERR "%s: IOMMU DATA(%d)[valid(%d) cache(%d) "
"ppg(%016llx)]\n",
pbm->name, i,
((data_val & PSYCHO_IOMMU_DATA_VALID) ? 1 : 0),
((data_val & PSYCHO_IOMMU_DATA_CACHE) ? 1 : 0),
(data_val & PSYCHO_IOMMU_DATA_PPAGE) << IOMMU_PAGE_SHIFT);
}
}
#define PSYCHO_IOMMU_CTRL_XLTESTAT 0x0000000006000000UL
#define PSYCHO_IOMMU_CTRL_XLTEERR 0x0000000001000000UL
void psycho_check_iommu_error(struct pci_pbm_info *pbm,
unsigned long afsr,
unsigned long afar,
enum psycho_error_type type)
{
u64 control, iommu_tag[16], iommu_data[16];
struct iommu *iommu = pbm->iommu;
unsigned long flags;
spin_lock_irqsave(&iommu->lock, flags);
control = upa_readq(iommu->iommu_control);
if (control & PSYCHO_IOMMU_CTRL_XLTEERR) {
const char *type_str;
control &= ~PSYCHO_IOMMU_CTRL_XLTEERR;
upa_writeq(control, iommu->iommu_control);
switch ((control & PSYCHO_IOMMU_CTRL_XLTESTAT) >> 25UL) {
case 0:
type_str = "Protection Error";
break;
case 1:
type_str = "Invalid Error";
break;
case 2:
type_str = "TimeOut Error";
break;
case 3:
default:
type_str = "ECC Error";
break;
}
printk(KERN_ERR "%s: IOMMU Error, type[%s]\n",
pbm->name, type_str);
/* It is very possible for another DVMA to occur while
* we do this probe, and corrupt the system further.
* But we are so screwed at this point that we are
* likely to crash hard anyways, so get as much
* diagnostic information to the console as we can.
*/
psycho_record_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
psycho_dump_iommu_tags_and_data(pbm, iommu_tag, iommu_data);
}
psycho_check_stc_error(pbm);
spin_unlock_irqrestore(&iommu->lock, flags);
}
#define PSYCHO_PCICTRL_SBH_ERR 0x0000000800000000UL
#define PSYCHO_PCICTRL_SERR 0x0000000400000000UL
static irqreturn_t psycho_pcierr_intr_other(struct pci_pbm_info *pbm)
{
irqreturn_t ret = IRQ_NONE;
u64 csr, csr_error_bits;
u16 stat, *addr;
csr = upa_readq(pbm->pci_csr);
csr_error_bits = csr & (PSYCHO_PCICTRL_SBH_ERR | PSYCHO_PCICTRL_SERR);
if (csr_error_bits) {
/* Clear the errors. */
upa_writeq(csr, pbm->pci_csr);
/* Log 'em. */
if (csr_error_bits & PSYCHO_PCICTRL_SBH_ERR)
printk(KERN_ERR "%s: PCI streaming byte hole "
"error asserted.\n", pbm->name);
if (csr_error_bits & PSYCHO_PCICTRL_SERR)
printk(KERN_ERR "%s: PCI SERR signal asserted.\n",
pbm->name);
ret = IRQ_HANDLED;
}
addr = psycho_pci_config_mkaddr(pbm, pbm->pci_first_busno,
0, PCI_STATUS);
pci_config_read16(addr, &stat);
if (stat & (PCI_STATUS_PARITY |
PCI_STATUS_SIG_TARGET_ABORT |
PCI_STATUS_REC_TARGET_ABORT |
PCI_STATUS_REC_MASTER_ABORT |
PCI_STATUS_SIG_SYSTEM_ERROR)) {
printk(KERN_ERR "%s: PCI bus error, PCI_STATUS[%04x]\n",
pbm->name, stat);
pci_config_write16(addr, 0xffff);
ret = IRQ_HANDLED;
}
return ret;
}
#define PSYCHO_PCIAFSR_PMA 0x8000000000000000ULL
#define PSYCHO_PCIAFSR_PTA 0x4000000000000000ULL
#define PSYCHO_PCIAFSR_PRTRY 0x2000000000000000ULL
#define PSYCHO_PCIAFSR_PPERR 0x1000000000000000ULL
#define PSYCHO_PCIAFSR_SMA 0x0800000000000000ULL
#define PSYCHO_PCIAFSR_STA 0x0400000000000000ULL
#define PSYCHO_PCIAFSR_SRTRY 0x0200000000000000ULL
#define PSYCHO_PCIAFSR_SPERR 0x0100000000000000ULL
#define PSYCHO_PCIAFSR_RESV1 0x00ff000000000000ULL
#define PSYCHO_PCIAFSR_BMSK 0x0000ffff00000000ULL
#define PSYCHO_PCIAFSR_BLK 0x0000000080000000ULL
#define PSYCHO_PCIAFSR_RESV2 0x0000000040000000ULL
#define PSYCHO_PCIAFSR_MID 0x000000003e000000ULL
#define PSYCHO_PCIAFSR_RESV3 0x0000000001ffffffULL
irqreturn_t psycho_pcierr_intr(int irq, void *dev_id)
{
struct pci_pbm_info *pbm = dev_id;
u64 afsr, afar, error_bits;
int reported;
afsr = upa_readq(pbm->pci_afsr);
afar = upa_readq(pbm->pci_afar);
error_bits = afsr &
(PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_PTA |
PSYCHO_PCIAFSR_PRTRY | PSYCHO_PCIAFSR_PPERR |
PSYCHO_PCIAFSR_SMA | PSYCHO_PCIAFSR_STA |
PSYCHO_PCIAFSR_SRTRY | PSYCHO_PCIAFSR_SPERR);
if (!error_bits)
return psycho_pcierr_intr_other(pbm);
upa_writeq(error_bits, pbm->pci_afsr);
printk(KERN_ERR "%s: PCI Error, primary error type[%s]\n",
pbm->name,
(((error_bits & PSYCHO_PCIAFSR_PMA) ?
"Master Abort" :
((error_bits & PSYCHO_PCIAFSR_PTA) ?
"Target Abort" :
((error_bits & PSYCHO_PCIAFSR_PRTRY) ?
"Excessive Retries" :
((error_bits & PSYCHO_PCIAFSR_PPERR) ?
"Parity Error" : "???"))))));
printk(KERN_ERR "%s: bytemask[%04llx] UPA_MID[%02llx] was_block(%d)\n",
pbm->name,
(afsr & PSYCHO_PCIAFSR_BMSK) >> 32UL,
(afsr & PSYCHO_PCIAFSR_MID) >> 25UL,
(afsr & PSYCHO_PCIAFSR_BLK) ? 1 : 0);
printk(KERN_ERR "%s: PCI AFAR [%016llx]\n", pbm->name, afar);
printk(KERN_ERR "%s: PCI Secondary errors [", pbm->name);
reported = 0;
if (afsr & PSYCHO_PCIAFSR_SMA) {
reported++;
printk("(Master Abort)");
}
if (afsr & PSYCHO_PCIAFSR_STA) {
reported++;
printk("(Target Abort)");
}
if (afsr & PSYCHO_PCIAFSR_SRTRY) {
reported++;
printk("(Excessive Retries)");
}
if (afsr & PSYCHO_PCIAFSR_SPERR) {
reported++;
printk("(Parity Error)");
}
if (!reported)
printk("(none)");
printk("]\n");
if (error_bits & (PSYCHO_PCIAFSR_PTA | PSYCHO_PCIAFSR_STA)) {
psycho_check_iommu_error(pbm, afsr, afar, PCI_ERR);
pci_scan_for_target_abort(pbm, pbm->pci_bus);
}
if (error_bits & (PSYCHO_PCIAFSR_PMA | PSYCHO_PCIAFSR_SMA))
pci_scan_for_master_abort(pbm, pbm->pci_bus);
if (error_bits & (PSYCHO_PCIAFSR_PPERR | PSYCHO_PCIAFSR_SPERR))
pci_scan_for_parity_error(pbm, pbm->pci_bus);
return IRQ_HANDLED;
}
static void psycho_iommu_flush(struct pci_pbm_info *pbm)
{
int i;
for (i = 0; i < 16; i++) {
unsigned long off = i * 8;
upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_TAG + off);
upa_writeq(0, pbm->controller_regs + PSYCHO_IOMMU_DATA + off);
}
}
#define PSYCHO_IOMMU_CONTROL 0x0200UL
#define PSYCHO_IOMMU_CTRL_TSBSZ 0x0000000000070000UL
#define PSYCHO_IOMMU_TSBSZ_1K 0x0000000000000000UL
#define PSYCHO_IOMMU_TSBSZ_2K 0x0000000000010000UL
#define PSYCHO_IOMMU_TSBSZ_4K 0x0000000000020000UL
#define PSYCHO_IOMMU_TSBSZ_8K 0x0000000000030000UL
#define PSYCHO_IOMMU_TSBSZ_16K 0x0000000000040000UL
#define PSYCHO_IOMMU_TSBSZ_32K 0x0000000000050000UL
#define PSYCHO_IOMMU_TSBSZ_64K 0x0000000000060000UL
#define PSYCHO_IOMMU_TSBSZ_128K 0x0000000000070000UL
#define PSYCHO_IOMMU_CTRL_TBWSZ 0x0000000000000004UL
#define PSYCHO_IOMMU_CTRL_DENAB 0x0000000000000002UL
#define PSYCHO_IOMMU_CTRL_ENAB 0x0000000000000001UL
#define PSYCHO_IOMMU_FLUSH 0x0210UL
#define PSYCHO_IOMMU_TSBBASE 0x0208UL
int psycho_iommu_init(struct pci_pbm_info *pbm, int tsbsize,
u32 dvma_offset, u32 dma_mask,
unsigned long write_complete_offset)
{
struct iommu *iommu = pbm->iommu;
u64 control;
int err;
iommu->iommu_control = pbm->controller_regs + PSYCHO_IOMMU_CONTROL;
iommu->iommu_tsbbase = pbm->controller_regs + PSYCHO_IOMMU_TSBBASE;
iommu->iommu_flush = pbm->controller_regs + PSYCHO_IOMMU_FLUSH;
iommu->iommu_tags = pbm->controller_regs + PSYCHO_IOMMU_TAG;
iommu->write_complete_reg = (pbm->controller_regs +
write_complete_offset);
iommu->iommu_ctxflush = 0;
control = upa_readq(iommu->iommu_control);
control |= PSYCHO_IOMMU_CTRL_DENAB;
upa_writeq(control, iommu->iommu_control);
psycho_iommu_flush(pbm);
/* Leave diag mode enabled for full-flushing done in pci_iommu.c */
err = iommu_table_init(iommu, tsbsize * 1024 * 8,
dvma_offset, dma_mask, pbm->numa_node);
if (err)
return err;
upa_writeq(__pa(iommu->page_table), iommu->iommu_tsbbase);
control = upa_readq(iommu->iommu_control);
control &= ~(PSYCHO_IOMMU_CTRL_TSBSZ | PSYCHO_IOMMU_CTRL_TBWSZ);
control |= PSYCHO_IOMMU_CTRL_ENAB;
switch (tsbsize) {
case 64:
control |= PSYCHO_IOMMU_TSBSZ_64K;
break;
case 128:
control |= PSYCHO_IOMMU_TSBSZ_128K;
break;
default:
return -EINVAL;
}
upa_writeq(control, iommu->iommu_control);
return 0;
}
void psycho_pbm_init_common(struct pci_pbm_info *pbm, struct platform_device *op,
const char *chip_name, int chip_type)
{
struct device_node *dp = op->dev.of_node;
pbm->name = dp->full_name;
pbm->numa_node = -1;
pbm->chip_type = chip_type;
pbm->chip_version = of_getintprop_default(dp, "version#", 0);
pbm->chip_revision = of_getintprop_default(dp, "module-revision#", 0);
pbm->op = op;
pbm->pci_ops = &sun4u_pci_ops;
pbm->config_space_reg_bits = 8;
pbm->index = pci_num_pbms++;
pci_get_pbm_props(pbm);
pci_determine_mem_io_space(pbm);
printk(KERN_INFO "%s: %s PCI Bus Module ver[%x:%x]\n",
pbm->name, chip_name,
pbm->chip_version, pbm->chip_revision);
}
Reference in New Issue View Git Blame Copy Permalink