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1/*
2 * Broadcom specific AMBA
3 * Core ops
4 *
5 * Licensed under the GNU/GPL. See COPYING for details.
6 */
7
8#include "bcma_private.h"
9#include <linux/bcma/bcma.h>
10
11bool bcma_core_is_enabled(struct bcma_device *core)
12{
13 if ((bcma_aread32(core, BCMA_IOCTL) & (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC))
14 != BCMA_IOCTL_CLK)
15 return false;
16 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
17 return false;
18 return true;
19}
20EXPORT_SYMBOL_GPL(bcma_core_is_enabled);
21
22void bcma_core_disable(struct bcma_device *core, u32 flags)
23{
24 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
25 return;
26
27 bcma_awrite32(core, BCMA_IOCTL, flags);
28 bcma_aread32(core, BCMA_IOCTL);
29 udelay(10);
30
31 bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
32 udelay(1);
33}
34EXPORT_SYMBOL_GPL(bcma_core_disable);
35
36int bcma_core_enable(struct bcma_device *core, u32 flags)
37{
38 bcma_core_disable(core, flags);
39
40 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));
41 bcma_aread32(core, BCMA_IOCTL);
42
43 bcma_awrite32(core, BCMA_RESET_CTL, 0);
44 udelay(1);
45
46 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));
47 bcma_aread32(core, BCMA_IOCTL);
48 udelay(1);
49
50 return 0;
51}
52EXPORT_SYMBOL_GPL(bcma_core_enable);
53
54void bcma_core_set_clockmode(struct bcma_device *core,
55 enum bcma_clkmode clkmode)
56{
57 u16 i;
58
59 WARN_ON(core->id.id != BCMA_CORE_CHIPCOMMON &&
60 core->id.id != BCMA_CORE_PCIE &&
61 core->id.id != BCMA_CORE_80211);
62
63 switch (clkmode) {
64 case BCMA_CLKMODE_FAST:
65 bcma_set32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
66 udelay(64);
67 for (i = 0; i < 1500; i++) {
68 if (bcma_read32(core, BCMA_CLKCTLST) &
69 BCMA_CLKCTLST_HAVEHT) {
70 i = 0;
71 break;
72 }
73 udelay(10);
74 }
75 if (i)
76 pr_err("HT force timeout\n");
77 break;
78 case BCMA_CLKMODE_DYNAMIC:
79 pr_warn("Dynamic clockmode not supported yet!\n");
80 break;
81 }
82}
83EXPORT_SYMBOL_GPL(bcma_core_set_clockmode);
84
85void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on)
86{
87 u16 i;
88
89 WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);
90 WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST);
91
92 if (on) {
93 bcma_set32(core, BCMA_CLKCTLST, req);
94 for (i = 0; i < 10000; i++) {
95 if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==
96 status) {
97 i = 0;
98 break;
99 }
100 udelay(10);
101 }
102 if (i)
103 pr_err("PLL enable timeout\n");
104 } else {
105 pr_warn("Disabling PLL not supported yet!\n");
106 }
107}
108EXPORT_SYMBOL_GPL(bcma_core_pll_ctl);
109
110u32 bcma_core_dma_translation(struct bcma_device *core)
111{
112 switch (core->bus->hosttype) {
113 case BCMA_HOSTTYPE_PCI:
114 if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64)
115 return BCMA_DMA_TRANSLATION_DMA64_CMT;
116 else
117 return BCMA_DMA_TRANSLATION_DMA32_CMT;
118 default:
119 pr_err("DMA translation unknown for host %d\n",
120 core->bus->hosttype);
121 }
122 return BCMA_DMA_TRANSLATION_NONE;
123}
124EXPORT_SYMBOL(bcma_core_dma_translation);
1/*
2 * Broadcom specific AMBA
3 * Core ops
4 *
5 * Licensed under the GNU/GPL. See COPYING for details.
6 */
7
8#include "bcma_private.h"
9#include <linux/export.h>
10#include <linux/bcma/bcma.h>
11
12bool bcma_core_is_enabled(struct bcma_device *core)
13{
14 if ((bcma_aread32(core, BCMA_IOCTL) & (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC))
15 != BCMA_IOCTL_CLK)
16 return false;
17 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
18 return false;
19 return true;
20}
21EXPORT_SYMBOL_GPL(bcma_core_is_enabled);
22
23void bcma_core_disable(struct bcma_device *core, u32 flags)
24{
25 if (bcma_aread32(core, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
26 return;
27
28 bcma_awrite32(core, BCMA_IOCTL, flags);
29 bcma_aread32(core, BCMA_IOCTL);
30 udelay(10);
31
32 bcma_awrite32(core, BCMA_RESET_CTL, BCMA_RESET_CTL_RESET);
33 bcma_aread32(core, BCMA_RESET_CTL);
34 udelay(1);
35}
36EXPORT_SYMBOL_GPL(bcma_core_disable);
37
38int bcma_core_enable(struct bcma_device *core, u32 flags)
39{
40 bcma_core_disable(core, flags);
41
42 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));
43 bcma_aread32(core, BCMA_IOCTL);
44
45 bcma_awrite32(core, BCMA_RESET_CTL, 0);
46 udelay(1);
47
48 bcma_awrite32(core, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));
49 bcma_aread32(core, BCMA_IOCTL);
50 udelay(1);
51
52 return 0;
53}
54EXPORT_SYMBOL_GPL(bcma_core_enable);
55
56void bcma_core_set_clockmode(struct bcma_device *core,
57 enum bcma_clkmode clkmode)
58{
59 u16 i;
60
61 WARN_ON(core->id.id != BCMA_CORE_CHIPCOMMON &&
62 core->id.id != BCMA_CORE_PCIE &&
63 core->id.id != BCMA_CORE_80211);
64
65 switch (clkmode) {
66 case BCMA_CLKMODE_FAST:
67 bcma_set32(core, BCMA_CLKCTLST, BCMA_CLKCTLST_FORCEHT);
68 udelay(64);
69 for (i = 0; i < 1500; i++) {
70 if (bcma_read32(core, BCMA_CLKCTLST) &
71 BCMA_CLKCTLST_HAVEHT) {
72 i = 0;
73 break;
74 }
75 udelay(10);
76 }
77 if (i)
78 pr_err("HT force timeout\n");
79 break;
80 case BCMA_CLKMODE_DYNAMIC:
81 bcma_set32(core, BCMA_CLKCTLST, ~BCMA_CLKCTLST_FORCEHT);
82 break;
83 }
84}
85EXPORT_SYMBOL_GPL(bcma_core_set_clockmode);
86
87void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on)
88{
89 u16 i;
90
91 WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);
92 WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST);
93
94 if (on) {
95 bcma_set32(core, BCMA_CLKCTLST, req);
96 for (i = 0; i < 10000; i++) {
97 if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==
98 status) {
99 i = 0;
100 break;
101 }
102 udelay(10);
103 }
104 if (i)
105 pr_err("PLL enable timeout\n");
106 } else {
107 pr_warn("Disabling PLL not supported yet!\n");
108 }
109}
110EXPORT_SYMBOL_GPL(bcma_core_pll_ctl);
111
112u32 bcma_core_dma_translation(struct bcma_device *core)
113{
114 switch (core->bus->hosttype) {
115 case BCMA_HOSTTYPE_SOC:
116 return 0;
117 case BCMA_HOSTTYPE_PCI:
118 if (bcma_aread32(core, BCMA_IOST) & BCMA_IOST_DMA64)
119 return BCMA_DMA_TRANSLATION_DMA64_CMT;
120 else
121 return BCMA_DMA_TRANSLATION_DMA32_CMT;
122 default:
123 pr_err("DMA translation unknown for host %d\n",
124 core->bus->hosttype);
125 }
126 return BCMA_DMA_TRANSLATION_NONE;
127}
128EXPORT_SYMBOL(bcma_core_dma_translation);