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path: root/drivers/pnp/support.c
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-rw-r--r--drivers/pnp/support.c171
1 files changed, 146 insertions, 25 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
index 95b076c18c07..bbf78ef4ba02 100644
--- a/drivers/pnp/support.c
+++ b/drivers/pnp/support.c
@@ -2,6 +2,8 @@
2 * support.c - standard functions for the use of pnp protocol drivers 2 * support.c - standard functions for the use of pnp protocol drivers
3 * 3 *
4 * Copyright 2003 Adam Belay <ambx1@neo.rr.com> 4 * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
5 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
6 * Bjorn Helgaas <bjorn.helgaas@hp.com>
5 */ 7 */
6 8
7#include <linux/module.h> 9#include <linux/module.h>
@@ -16,6 +18,10 @@
16 */ 18 */
17int pnp_is_active(struct pnp_dev *dev) 19int pnp_is_active(struct pnp_dev *dev)
18{ 20{
21 /*
22 * I don't think this is very reliable because pnp_disable_dev()
23 * only clears out auto-assigned resources.
24 */
19 if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 && 25 if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
20 !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 && 26 !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
21 pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1) 27 pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
@@ -52,39 +58,154 @@ void pnp_eisa_id_to_string(u32 id, char *str)
52 str[7] = '\0'; 58 str[7] = '\0';
53} 59}
54 60
61char *pnp_resource_type_name(struct resource *res)
62{
63 switch (pnp_resource_type(res)) {
64 case IORESOURCE_IO:
65 return "io";
66 case IORESOURCE_MEM:
67 return "mem";
68 case IORESOURCE_IRQ:
69 return "irq";
70 case IORESOURCE_DMA:
71 return "dma";
72 }
73 return NULL;
74}
75
55void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc) 76void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc)
56{ 77{
57#ifdef DEBUG 78#ifdef DEBUG
79 char buf[128];
80 int len = 0;
81 struct pnp_resource *pnp_res;
58 struct resource *res; 82 struct resource *res;
59 int i;
60 83
61 dev_dbg(&dev->dev, "current resources: %s\n", desc); 84 if (list_empty(&dev->resources)) {
62 85 dev_dbg(&dev->dev, "%s: no current resources\n", desc);
63 for (i = 0; i < PNP_MAX_IRQ; i++) { 86 return;
64 res = pnp_get_resource(dev, IORESOURCE_IRQ, i);
65 if (res && !(res->flags & IORESOURCE_UNSET))
66 dev_dbg(&dev->dev, " irq %lld flags %#lx\n",
67 (unsigned long long) res->start, res->flags);
68 } 87 }
69 for (i = 0; i < PNP_MAX_DMA; i++) { 88
70 res = pnp_get_resource(dev, IORESOURCE_DMA, i); 89 dev_dbg(&dev->dev, "%s: current resources:\n", desc);
71 if (res && !(res->flags & IORESOURCE_UNSET)) 90 list_for_each_entry(pnp_res, &dev->resources, list) {
72 dev_dbg(&dev->dev, " dma %lld flags %#lx\n", 91 res = &pnp_res->res;
73 (unsigned long long) res->start, res->flags); 92
93 len += snprintf(buf + len, sizeof(buf) - len, " %-3s ",
94 pnp_resource_type_name(res));
95
96 if (res->flags & IORESOURCE_DISABLED) {
97 dev_dbg(&dev->dev, "%sdisabled\n", buf);
98 continue;
99 }
100
101 switch (pnp_resource_type(res)) {
102 case IORESOURCE_IO:
103 case IORESOURCE_MEM:
104 len += snprintf(buf + len, sizeof(buf) - len,
105 "%#llx-%#llx flags %#lx",
106 (unsigned long long) res->start,
107 (unsigned long long) res->end,
108 res->flags);
109 break;
110 case IORESOURCE_IRQ:
111 case IORESOURCE_DMA:
112 len += snprintf(buf + len, sizeof(buf) - len,
113 "%lld flags %#lx",
114 (unsigned long long) res->start,
115 res->flags);
116 break;
117 }
118 dev_dbg(&dev->dev, "%s\n", buf);
74 } 119 }
75 for (i = 0; i < PNP_MAX_PORT; i++) { 120#endif
76 res = pnp_get_resource(dev, IORESOURCE_IO, i); 121}
77 if (res && !(res->flags & IORESOURCE_UNSET)) 122
78 dev_dbg(&dev->dev, " io %#llx-%#llx flags %#lx\n", 123char *pnp_option_priority_name(struct pnp_option *option)
79 (unsigned long long) res->start, 124{
80 (unsigned long long) res->end, res->flags); 125 switch (pnp_option_priority(option)) {
126 case PNP_RES_PRIORITY_PREFERRED:
127 return "preferred";
128 case PNP_RES_PRIORITY_ACCEPTABLE:
129 return "acceptable";
130 case PNP_RES_PRIORITY_FUNCTIONAL:
131 return "functional";
81 } 132 }
82 for (i = 0; i < PNP_MAX_MEM; i++) { 133 return "invalid";
83 res = pnp_get_resource(dev, IORESOURCE_MEM, i); 134}
84 if (res && !(res->flags & IORESOURCE_UNSET)) 135
85 dev_dbg(&dev->dev, " mem %#llx-%#llx flags %#lx\n", 136void dbg_pnp_show_option(struct pnp_dev *dev, struct pnp_option *option)
86 (unsigned long long) res->start, 137{
87 (unsigned long long) res->end, res->flags); 138#ifdef DEBUG
139 char buf[128];
140 int len = 0, i;
141 struct pnp_port *port;
142 struct pnp_mem *mem;
143 struct pnp_irq *irq;
144 struct pnp_dma *dma;
145
146 if (pnp_option_is_dependent(option))
147 len += snprintf(buf + len, sizeof(buf) - len,
148 " dependent set %d (%s) ",
149 pnp_option_set(option),
150 pnp_option_priority_name(option));
151 else
152 len += snprintf(buf + len, sizeof(buf) - len, " independent ");
153
154 switch (option->type) {
155 case IORESOURCE_IO:
156 port = &option->u.port;
157 len += snprintf(buf + len, sizeof(buf) - len, "io min %#llx "
158 "max %#llx align %lld size %lld flags %#x",
159 (unsigned long long) port->min,
160 (unsigned long long) port->max,
161 (unsigned long long) port->align,
162 (unsigned long long) port->size, port->flags);
163 break;
164 case IORESOURCE_MEM:
165 mem = &option->u.mem;
166 len += snprintf(buf + len, sizeof(buf) - len, "mem min %#llx "
167 "max %#llx align %lld size %lld flags %#x",
168 (unsigned long long) mem->min,
169 (unsigned long long) mem->max,
170 (unsigned long long) mem->align,
171 (unsigned long long) mem->size, mem->flags);
172 break;
173 case IORESOURCE_IRQ:
174 irq = &option->u.irq;
175 len += snprintf(buf + len, sizeof(buf) - len, "irq");
176 if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
177 len += snprintf(buf + len, sizeof(buf) - len,
178 " <none>");
179 else {
180 for (i = 0; i < PNP_IRQ_NR; i++)
181 if (test_bit(i, irq->map.bits))
182 len += snprintf(buf + len,
183 sizeof(buf) - len,
184 " %d", i);
185 }
186 len += snprintf(buf + len, sizeof(buf) - len, " flags %#x",
187 irq->flags);
188 if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
189 len += snprintf(buf + len, sizeof(buf) - len,
190 " (optional)");
191 break;
192 case IORESOURCE_DMA:
193 dma = &option->u.dma;
194 len += snprintf(buf + len, sizeof(buf) - len, "dma");
195 if (!dma->map)
196 len += snprintf(buf + len, sizeof(buf) - len,
197 " <none>");
198 else {
199 for (i = 0; i < 8; i++)
200 if (dma->map & (1 << i))
201 len += snprintf(buf + len,
202 sizeof(buf) - len,
203 " %d", i);
204 }
205 len += snprintf(buf + len, sizeof(buf) - len, " (bitmask %#x) "
206 "flags %#x", dma->map, dma->flags);
207 break;
88 } 208 }
209 dev_dbg(&dev->dev, "%s\n", buf);
89#endif 210#endif
90} 211}
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-08 06:31:38 -0500