1 // SPDX-License-Identifier: GPL-2.0
3  * support.c - standard functions for the use of pnp protocol drivers
6  * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
16  * pnp_is_active - Determines if a device is active based on its current
24 	 * only clears out auto-assigned resources.  in pnp_is_active()
28 	    pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)  in pnp_is_active()
44 	 * According to the specs, the first three characters are five-bit  in pnp_eisa_id_to_string()
45 	 * compressed ASCII, and the left-over high order bit should be zero.  in pnp_eisa_id_to_string()
51 	str[0] = 'A' + ((id >> 26) & 0x3f) - 1;  in pnp_eisa_id_to_string()
52 	str[1] = 'A' + ((id >> 21) & 0x1f) - 1;  in pnp_eisa_id_to_string()
53 	str[2] = 'A' + ((id >> 16) & 0x1f) - 1;  in pnp_eisa_id_to_string()
67 		return "mem";  in pnp_resource_type_name()
71 		return "dma";  in pnp_resource_type_name()
82 	if (list_empty(&dev->resources))  in dbg_pnp_show_resources()
83 		pnp_dbg(&dev->dev, "%s: no current resources\n", desc);  in dbg_pnp_show_resources()
85 		pnp_dbg(&dev->dev, "%s: current resources:\n", desc);  in dbg_pnp_show_resources()
86 		list_for_each_entry(pnp_res, &dev->resources, list)  in dbg_pnp_show_resources()
87 			pnp_dbg(&dev->dev, "%pr\n", &pnp_res->res);  in dbg_pnp_show_resources()
109 	struct pnp_mem *mem;  in dbg_pnp_show_option()  local
111 	struct pnp_dma *dma;  in dbg_pnp_show_option()  local
114 		len += scnprintf(buf + len, sizeof(buf) - len,  in dbg_pnp_show_option()
119 		len += scnprintf(buf + len, sizeof(buf) - len,  in dbg_pnp_show_option()
122 	switch (option->type) {  in dbg_pnp_show_option()
124 		port = &option->u.port;  in dbg_pnp_show_option()
125 		len += scnprintf(buf + len, sizeof(buf) - len, "io  min %#llx "  in dbg_pnp_show_option()
127 				 (unsigned long long) port->min,  in dbg_pnp_show_option()
128 				 (unsigned long long) port->max,  in dbg_pnp_show_option()
129 				 (unsigned long long) port->align,  in dbg_pnp_show_option()
130 				 (unsigned long long) port->size, port->flags);  in dbg_pnp_show_option()
133 		mem = &option->u.mem;  in dbg_pnp_show_option()
134 		len += scnprintf(buf + len, sizeof(buf) - len, "mem min %#llx "  in dbg_pnp_show_option()
136 				 (unsigned long long) mem->min,  in dbg_pnp_show_option()
137 				 (unsigned long long) mem->max,  in dbg_pnp_show_option()
138 				 (unsigned long long) mem->align,  in dbg_pnp_show_option()
139 				 (unsigned long long) mem->size, mem->flags);  in dbg_pnp_show_option()
142 		irq = &option->u.irq;  in dbg_pnp_show_option()
143 		len += scnprintf(buf + len, sizeof(buf) - len, "irq");  in dbg_pnp_show_option()
144 		if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))  in dbg_pnp_show_option()
145 			len += scnprintf(buf + len, sizeof(buf) - len,  in dbg_pnp_show_option()
149 				if (test_bit(i, irq->map.bits))  in dbg_pnp_show_option()
151 							 sizeof(buf) - len,  in dbg_pnp_show_option()
154 		len += scnprintf(buf + len, sizeof(buf) - len, " flags %#x",  in dbg_pnp_show_option()
155 				 irq->flags);  in dbg_pnp_show_option()
156 		if (irq->flags & IORESOURCE_IRQ_OPTIONAL)  in dbg_pnp_show_option()
157 			len += scnprintf(buf + len, sizeof(buf) - len,  in dbg_pnp_show_option()
161 		dma = &option->u.dma;  in dbg_pnp_show_option()
162 		len += scnprintf(buf + len, sizeof(buf) - len, "dma");  in dbg_pnp_show_option()
163 		if (!dma->map)  in dbg_pnp_show_option()
164 			len += scnprintf(buf + len, sizeof(buf) - len,  in dbg_pnp_show_option()
168 				if (dma->map & (1 << i))  in dbg_pnp_show_option()
170 							 sizeof(buf) - len,  in dbg_pnp_show_option()
173 		len += scnprintf(buf + len, sizeof(buf) - len, " (bitmask %#x) "  in dbg_pnp_show_option()
174 				 "flags %#x", dma->map, dma->flags);  in dbg_pnp_show_option()
177 	pnp_dbg(&dev->dev, "%s\n", buf);  in dbg_pnp_show_option()