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authorLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 18:01:29 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-15 18:01:29 -0400
commit7e2225d860772aaa07e1cebca6a5aa6f93f9aa91 (patch)
tree8a4c3076c2043d011fcf2357835f4f16be7606a7 /arch/mips/pci/pci-tx4938.c
parent3a628b0fd42f7eaf9d052447784d48ceae9ffb8e (diff)
parentb27418aa551a153e8bf1bd16cf93e5786f9590a9 (diff)
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (54 commits) [MIPS] Remove mips_machtype for LASAT machines [MIPS] Remove mips_machtype from EMMA2RH machines [MIPS] Remove mips_machtype from ARC based machines [MIPS] MTX-1 flash partition setup move to platform devices registration [MIPS] TXx9: cleanup and fix some sparse warnings [MIPS] TXx9: rename asm-mips/mach-jmr3927 to asm-mips/mach-tx39xx [MIPS] remove machtype for group Toshiba [MIPS] separate rbtx4927_time_init() and rbtx4937_time_init() [MIPS] separate rbtx4927_arch_init() and rbtx4937_arch_init() [MIPS] txx9_cpu_clock setup move to rbtx4927_time_init() [MIPS] txx9_board_vec set directly without mips_machtype [MIPS] IP22: Add platform device for Indy volume buttons [MIPS] cmbvr4133: Remove support [MIPS] remove wrppmc_machine_power_off() [MIPS] replace inline assembler to cpu_wait() [MIPS] IP22/28: Add platform devices for HAL2 [MIPS] TXx9: Update and merge defconfigs [MIPS] TXx9: Make single kernel can support multiple boards [MIPS] TXx9: Update defconfigs [MIPS] TXx9: Reorganize PCI code ...
Diffstat (limited to 'arch/mips/pci/pci-tx4938.c')
-rw-r--r--arch/mips/pci/pci-tx4938.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/arch/mips/pci/pci-tx4938.c b/arch/mips/pci/pci-tx4938.c
new file mode 100644
index 000000000000..e5375511c2b7
--- /dev/null
+++ b/arch/mips/pci/pci-tx4938.c
@@ -0,0 +1,134 @@
1/*
2 * linux/arch/mips/pci/pci-tx4938.c
3 *
4 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
5 * and RBTX49xx patch from CELF patch archive.
6 *
7 * Copyright 2001, 2003-2005 MontaVista Software Inc.
8 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
9 * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
10 *
11 * This file is subject to the terms and conditions of the GNU General Public
12 * License. See the file "COPYING" in the main directory of this archive
13 * for more details.
14 */
15#include <linux/init.h>
16#include <linux/pci.h>
17#include <linux/kernel.h>
18#include <asm/txx9/generic.h>
19#include <asm/txx9/tx4938.h>
20
21int __init tx4938_report_pciclk(void)
22{
23 int pciclk = 0;
24
25 printk(KERN_INFO "PCIC --%s PCICLK:",
26 (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66) ?
27 " PCI66" : "");
28 if (__raw_readq(&tx4938_ccfgptr->pcfg) & TX4938_PCFG_PCICLKEN_ALL) {
29 u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg);
30 switch ((unsigned long)ccfg &
31 TX4938_CCFG_PCIDIVMODE_MASK) {
32 case TX4938_CCFG_PCIDIVMODE_4:
33 pciclk = txx9_cpu_clock / 4; break;
34 case TX4938_CCFG_PCIDIVMODE_4_5:
35 pciclk = txx9_cpu_clock * 2 / 9; break;
36 case TX4938_CCFG_PCIDIVMODE_5:
37 pciclk = txx9_cpu_clock / 5; break;
38 case TX4938_CCFG_PCIDIVMODE_5_5:
39 pciclk = txx9_cpu_clock * 2 / 11; break;
40 case TX4938_CCFG_PCIDIVMODE_8:
41 pciclk = txx9_cpu_clock / 8; break;
42 case TX4938_CCFG_PCIDIVMODE_9:
43 pciclk = txx9_cpu_clock / 9; break;
44 case TX4938_CCFG_PCIDIVMODE_10:
45 pciclk = txx9_cpu_clock / 10; break;
46 case TX4938_CCFG_PCIDIVMODE_11:
47 pciclk = txx9_cpu_clock / 11; break;
48 }
49 printk("Internal(%u.%uMHz)",
50 (pciclk + 50000) / 1000000,
51 ((pciclk + 50000) / 100000) % 10);
52 } else {
53 printk("External");
54 pciclk = -1;
55 }
56 printk("\n");
57 return pciclk;
58}
59
60void __init tx4938_report_pci1clk(void)
61{
62 __u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg);
63 unsigned int pciclk =
64 txx9_gbus_clock / ((ccfg & TX4938_CCFG_PCI1DMD) ? 4 : 2);
65
66 printk(KERN_INFO "PCIC1 -- %sPCICLK:%u.%uMHz\n",
67 (ccfg & TX4938_CCFG_PCI1_66) ? "PCI66 " : "",
68 (pciclk + 50000) / 1000000,
69 ((pciclk + 50000) / 100000) % 10);
70}
71
72int __init tx4938_pciclk66_setup(void)
73{
74 int pciclk;
75
76 /* Assert M66EN */
77 tx4938_ccfg_set(TX4938_CCFG_PCI66);
78 /* Double PCICLK (if possible) */
79 if (__raw_readq(&tx4938_ccfgptr->pcfg) & TX4938_PCFG_PCICLKEN_ALL) {
80 unsigned int pcidivmode = 0;
81 u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg);
82 pcidivmode = (unsigned long)ccfg &
83 TX4938_CCFG_PCIDIVMODE_MASK;
84 switch (pcidivmode) {
85 case TX4938_CCFG_PCIDIVMODE_8:
86 case TX4938_CCFG_PCIDIVMODE_4:
87 pcidivmode = TX4938_CCFG_PCIDIVMODE_4;
88 pciclk = txx9_cpu_clock / 4;
89 break;
90 case TX4938_CCFG_PCIDIVMODE_9:
91 case TX4938_CCFG_PCIDIVMODE_4_5:
92 pcidivmode = TX4938_CCFG_PCIDIVMODE_4_5;
93 pciclk = txx9_cpu_clock * 2 / 9;
94 break;
95 case TX4938_CCFG_PCIDIVMODE_10:
96 case TX4938_CCFG_PCIDIVMODE_5:
97 pcidivmode = TX4938_CCFG_PCIDIVMODE_5;
98 pciclk = txx9_cpu_clock / 5;
99 break;
100 case TX4938_CCFG_PCIDIVMODE_11:
101 case TX4938_CCFG_PCIDIVMODE_5_5:
102 default:
103 pcidivmode = TX4938_CCFG_PCIDIVMODE_5_5;
104 pciclk = txx9_cpu_clock * 2 / 11;
105 break;
106 }
107 tx4938_ccfg_change(TX4938_CCFG_PCIDIVMODE_MASK,
108 pcidivmode);
109 printk(KERN_DEBUG "PCICLK: ccfg:%08lx\n",
110 (unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg));
111 } else
112 pciclk = -1;
113 return pciclk;
114}
115
116int tx4938_pcic1_map_irq(const struct pci_dev *dev, u8 slot)
117{
118 if (get_tx4927_pcicptr(dev->bus->sysdata) == tx4938_pcic1ptr) {
119 switch (slot) {
120 case TX4927_PCIC_IDSEL_AD_TO_SLOT(31):
121 if (__raw_readq(&tx4938_ccfgptr->pcfg) &
122 TX4938_PCFG_ETH0_SEL)
123 return TXX9_IRQ_BASE + TX4938_IR_ETH0;
124 break;
125 case TX4927_PCIC_IDSEL_AD_TO_SLOT(30):
126 if (__raw_readq(&tx4938_ccfgptr->pcfg) &
127 TX4938_PCFG_ETH1_SEL)
128 return TXX9_IRQ_BASE + TX4938_IR_ETH1;
129 break;
130 }
131 return 0;
132 }
133 return -1;
134}
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