[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_attr.c

/*
 *                  QLOGIC LINUX SOFTWARE
 *
 * QLogic ISP2x00 device driver for Linux 2.6.x
 * Copyright (C) 2003-2005 QLogic Corporation
 * (www.qlogic.com)
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 */
#include "qla_def.h"

#include <linux/version.h>
#include <scsi/scsi_transport_fc.h>

/* SYSFS attributes --------------------------------------------------------- */

static ssize_t
qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, loff_t off,
    size_t count)
{
	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	    struct device, kobj)));

	if (ha->fw_dump_reading == 0)
		return 0;
	if (off > ha->fw_dump_buffer_len)
		return 0;
	if (off + count > ha->fw_dump_buffer_len)
		count = ha->fw_dump_buffer_len - off;

	memcpy(buf, &ha->fw_dump_buffer[off], count);

	return (count);
}

static ssize_t
qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, loff_t off,
    size_t count)
{
	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	    struct device, kobj)));
	int reading;
	uint32_t dump_size;

	if (off != 0)
		return (0);

	reading = simple_strtol(buf, NULL, 10);
	switch (reading) {
	case 0:
		if (ha->fw_dump_reading == 1) {
			qla_printk(KERN_INFO, ha,
			    "Firmware dump cleared on (%ld).\n",
			    ha->host_no);

			vfree(ha->fw_dump_buffer);
			free_pages((unsigned long)ha->fw_dump,
			    ha->fw_dump_order);

			ha->fw_dump_reading = 0;
			ha->fw_dump_buffer = NULL;
			ha->fw_dump = NULL;
		}
		break;
	case 1:
		if (ha->fw_dump != NULL && !ha->fw_dump_reading) {
			ha->fw_dump_reading = 1;

			dump_size = FW_DUMP_SIZE_1M;
			if (ha->fw_memory_size < 0x20000) 
				dump_size = FW_DUMP_SIZE_128K;
			else if (ha->fw_memory_size < 0x80000) 
				dump_size = FW_DUMP_SIZE_512K;
			ha->fw_dump_buffer = (char *)vmalloc(dump_size);
			if (ha->fw_dump_buffer == NULL) {
				qla_printk(KERN_WARNING, ha,
				    "Unable to allocate memory for firmware "
				    "dump buffer (%d).\n", dump_size);

				ha->fw_dump_reading = 0;
				return (count);
			}
			qla_printk(KERN_INFO, ha,
			    "Firmware dump ready for read on (%ld).\n",
			    ha->host_no);
			memset(ha->fw_dump_buffer, 0, dump_size);
			if (IS_QLA2100(ha) || IS_QLA2200(ha))
 				qla2100_ascii_fw_dump(ha);
 			else
 				qla2300_ascii_fw_dump(ha);
			ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
		}
		break;
	}
	return (count);
}

static struct bin_attribute sysfs_fw_dump_attr = {
	.attr = {
		.name = "fw_dump",
		.mode = S_IRUSR | S_IWUSR,
		.owner = THIS_MODULE,
	},
	.size = 0,
	.read = qla2x00_sysfs_read_fw_dump,
	.write = qla2x00_sysfs_write_fw_dump,
};

static ssize_t
qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off,
    size_t count)
{
	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	    struct device, kobj)));
	uint16_t	*witer;
	unsigned long	flags;
	uint16_t	cnt;

	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
		return 0;

	/* Read NVRAM. */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla2x00_lock_nvram_access(ha);
 	witer = (uint16_t *)buf;
 	for (cnt = 0; cnt < count / 2; cnt++) {
		*witer = cpu_to_le16(qla2x00_get_nvram_word(ha,
		    cnt+ha->nvram_base));
		witer++;
 	}
	qla2x00_unlock_nvram_access(ha);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	return (count);
}

static ssize_t
qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off,
    size_t count)
{
	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	    struct device, kobj)));
	uint8_t		*iter;
	uint16_t	*witer;
	unsigned long	flags;
	uint16_t	cnt;
	uint8_t		chksum;

	if (!capable(CAP_SYS_ADMIN) || off != 0 || count != sizeof(nvram_t))
		return 0;

	/* Checksum NVRAM. */
	iter = (uint8_t *)buf;
	chksum = 0;
	for (cnt = 0; cnt < count - 1; cnt++)
		chksum += *iter++;
	chksum = ~chksum + 1;
	*iter = chksum;

	/* Write NVRAM. */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	qla2x00_lock_nvram_access(ha);
	qla2x00_release_nvram_protection(ha);
 	witer = (uint16_t *)buf;
	for (cnt = 0; cnt < count / 2; cnt++) {
		qla2x00_write_nvram_word(ha, cnt+ha->nvram_base,
		    cpu_to_le16(*witer));
		witer++;
	}
	qla2x00_unlock_nvram_access(ha);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	return (count);
}

static struct bin_attribute sysfs_nvram_attr = {
	.attr = {
		.name = "nvram",
		.mode = S_IRUSR | S_IWUSR,
		.owner = THIS_MODULE,
	},
	.size = sizeof(nvram_t),
	.read = qla2x00_sysfs_read_nvram,
	.write = qla2x00_sysfs_write_nvram,
};

void
qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
{
	struct Scsi_Host *host = ha->host;

	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
}

void
qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
{
	struct Scsi_Host *host = ha->host;

	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
}

/* Host attributes. */

static void
qla2x00_get_host_port_id(struct Scsi_Host *shost)
{
	scsi_qla_host_t *ha = to_qla_host(shost);

	fc_host_port_id(shost) = ha->d_id.b.domain << 16 |
	    ha->d_id.b.area << 8 | ha->d_id.b.al_pa;
}

static void
qla2x00_get_starget_node_name(struct scsi_target *starget)
{
	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
	scsi_qla_host_t *ha = to_qla_host(host);
	fc_port_t *fcport;
	uint64_t node_name = 0;

	list_for_each_entry(fcport, &ha->fcports, list) {
		if (starget->id == fcport->os_target_id) {
			node_name = *(uint64_t *)fcport->node_name;
			break;
		}
	}

	fc_starget_node_name(starget) = be64_to_cpu(node_name);
}

static void
qla2x00_get_starget_port_name(struct scsi_target *starget)
{
	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
	scsi_qla_host_t *ha = to_qla_host(host);
	fc_port_t *fcport;
	uint64_t port_name = 0;

	list_for_each_entry(fcport, &ha->fcports, list) {
		if (starget->id == fcport->os_target_id) {
			port_name = *(uint64_t *)fcport->port_name;
			break;
		}
	}

	fc_starget_port_name(starget) = be64_to_cpu(port_name);
}

static void
qla2x00_get_starget_port_id(struct scsi_target *starget)
{
	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
	scsi_qla_host_t *ha = to_qla_host(host);
	fc_port_t *fcport;
	uint32_t port_id = ~0U;

	list_for_each_entry(fcport, &ha->fcports, list) {
		if (starget->id == fcport->os_target_id) {
			port_id = fcport->d_id.b.domain << 16 |
			    fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
			break;
		}
	}

	fc_starget_port_id(starget) = port_id;
}

static void
qla2x00_get_rport_loss_tmo(struct fc_rport *rport)
{
	struct Scsi_Host *host = rport_to_shost(rport);
	scsi_qla_host_t *ha = to_qla_host(host);

	rport->dev_loss_tmo = ha->port_down_retry_count + 5;
}

static void
qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
	struct Scsi_Host *host = rport_to_shost(rport);
	scsi_qla_host_t *ha = to_qla_host(host);

	if (timeout)
		ha->port_down_retry_count = timeout;
	else
		ha->port_down_retry_count = 1;

	rport->dev_loss_tmo = ha->port_down_retry_count + 5;
}

static struct fc_function_template qla2xxx_transport_functions = {

	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.get_host_port_id = qla2x00_get_host_port_id,
	.show_host_port_id = 1,

	.dd_fcrport_size = sizeof(struct fc_port *),

	.get_starget_node_name = qla2x00_get_starget_node_name,
	.show_starget_node_name = 1,
	.get_starget_port_name = qla2x00_get_starget_port_name,
	.show_starget_port_name = 1,
	.get_starget_port_id  = qla2x00_get_starget_port_id,
	.show_starget_port_id = 1,

	.get_rport_dev_loss_tmo = qla2x00_get_rport_loss_tmo,
	.set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,

};

struct scsi_transport_template *
qla2x00_alloc_transport_tmpl(void)
{
	return (fc_attach_transport(&qla2xxx_transport_functions));
}

void
qla2x00_init_host_attr(scsi_qla_host_t *ha)
{
	fc_host_node_name(ha->host) =
	    be64_to_cpu(*(uint64_t *)ha->init_cb->node_name);
	fc_host_port_name(ha->host) =
	    be64_to_cpu(*(uint64_t *)ha->init_cb->port_name);
}
Commit	Line	Data
8482e118	1	/*
	2	* QLOGIC LINUX SOFTWARE
	3	*
	4	* QLogic ISP2x00 device driver for Linux 2.6.x
	5	* Copyright (C) 2003-2005 QLogic Corporation
	6	* (www.qlogic.com)
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2, or (at your option) any
	11	* later version.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	*/
	19	#include "qla_def.h"
	20
	21	#include <linux/version.h>
	22	#include <scsi/scsi_transport_fc.h>
	23
	24	/* SYSFS attributes --------------------------------------------------------- */
	25
	26	static ssize_t
	27	qla2x00_sysfs_read_fw_dump(struct kobject kobj, char buf, loff_t off,
	28	size_t count)
	29	{
	30	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	31	struct device, kobj)));
	32
	33	if (ha->fw_dump_reading == 0)
	34	return 0;
	35	if (off > ha->fw_dump_buffer_len)
	36	return 0;
	37	if (off + count > ha->fw_dump_buffer_len)
	38	count = ha->fw_dump_buffer_len - off;
	39
	40	memcpy(buf, &ha->fw_dump_buffer[off], count);
	41
	42	return (count);
	43	}
	44
	45	static ssize_t
	46	qla2x00_sysfs_write_fw_dump(struct kobject kobj, char buf, loff_t off,
	47	size_t count)
	48	{
	49	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
	50	struct device, kobj)));
	51	int reading;
	52	uint32_t dump_size;
	53
	54	if (off != 0)
	55	return (0);
	56
	57	reading = simple_strtol(buf, NULL, 10);
	58	switch (reading) {
	59	case 0:
	60	if (ha->fw_dump_reading == 1) {
	61	qla_printk(KERN_INFO, ha,
	62	"Firmware dump cleared on (%ld).\n",
	63	ha->host_no);
	64
65	vfree(ha->fw_dump_buffer);
66	free_pages((unsigned long)ha->fw_dump,
67	ha->fw_dump_order);
68
69	ha->fw_dump_reading = 0;
70	ha->fw_dump_buffer = NULL;
71	ha->fw_dump = NULL;
72	}
73	break;
74	case 1:
75	if (ha->fw_dump != NULL && !ha->fw_dump_reading) {
76	ha->fw_dump_reading = 1;
77
78	dump_size = FW_DUMP_SIZE_1M;
79	if (ha->fw_memory_size < 0x20000)
80	dump_size = FW_DUMP_SIZE_128K;
81	else if (ha->fw_memory_size < 0x80000)
82	dump_size = FW_DUMP_SIZE_512K;
83	ha->fw_dump_buffer = (char *)vmalloc(dump_size);
84	if (ha->fw_dump_buffer == NULL) {
85	qla_printk(KERN_WARNING, ha,
86	"Unable to allocate memory for firmware "
87	"dump buffer (%d).\n", dump_size);
88
89	ha->fw_dump_reading = 0;
90	return (count);
91	}
92	qla_printk(KERN_INFO, ha,
93	"Firmware dump ready for read on (%ld).\n",
94	ha->host_no);
95	memset(ha->fw_dump_buffer, 0, dump_size);
96	if (IS_QLA2100(ha) \|\| IS_QLA2200(ha))
97	qla2100_ascii_fw_dump(ha);
98	else
99	qla2300_ascii_fw_dump(ha);
100	ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
101	}
102	break;
103	}
104	return (count);
105	}
106
107	static struct bin_attribute sysfs_fw_dump_attr = {
108	.attr = {
109	.name = "fw_dump",
110	.mode = S_IRUSR \| S_IWUSR,
111	.owner = THIS_MODULE,
112	},
113	.size = 0,
114	.read = qla2x00_sysfs_read_fw_dump,
115	.write = qla2x00_sysfs_write_fw_dump,
116	};
117
118	static ssize_t
119	qla2x00_sysfs_read_nvram(struct kobject kobj, char buf, loff_t off,
120	size_t count)
121	{
122	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
123	struct device, kobj)));
124	uint16_t *witer;
125	unsigned long flags;
126	uint16_t cnt;
127
128	if (!capable(CAP_SYS_ADMIN) \|\| off != 0 \|\| count != sizeof(nvram_t))
129	return 0;
130
131	/* Read NVRAM. */
132	spin_lock_irqsave(&ha->hardware_lock, flags);
133	qla2x00_lock_nvram_access(ha);
134	witer = (uint16_t *)buf;
135	for (cnt = 0; cnt < count / 2; cnt++) {
136	*witer = cpu_to_le16(qla2x00_get_nvram_word(ha,
137	cnt+ha->nvram_base));
138	witer++;
139	}
140	qla2x00_unlock_nvram_access(ha);
141	spin_unlock_irqrestore(&ha->hardware_lock, flags);
142
143	return (count);
144	}
145
146	static ssize_t
147	qla2x00_sysfs_write_nvram(struct kobject kobj, char buf, loff_t off,
148	size_t count)
149	{
150	struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
151	struct device, kobj)));
152	uint8_t *iter;
153	uint16_t *witer;
154	unsigned long flags;
155	uint16_t cnt;
156	uint8_t chksum;
157
158	if (!capable(CAP_SYS_ADMIN) \|\| off != 0 \|\| count != sizeof(nvram_t))
159	return 0;
160
161	/* Checksum NVRAM. */
162	iter = (uint8_t *)buf;
163	chksum = 0;
164	for (cnt = 0; cnt < count - 1; cnt++)
165	chksum += *iter++;
166	chksum = ~chksum + 1;
167	*iter = chksum;
168
169	/* Write NVRAM. */
170	spin_lock_irqsave(&ha->hardware_lock, flags);
171	qla2x00_lock_nvram_access(ha);
172	qla2x00_release_nvram_protection(ha);
173	witer = (uint16_t *)buf;
174	for (cnt = 0; cnt < count / 2; cnt++) {
175	qla2x00_write_nvram_word(ha, cnt+ha->nvram_base,
176	cpu_to_le16(*witer));
177	witer++;
178	}
179	qla2x00_unlock_nvram_access(ha);
180	spin_unlock_irqrestore(&ha->hardware_lock, flags);
181
182	return (count);
183	}
184
185	static struct bin_attribute sysfs_nvram_attr = {
186	.attr = {
187	.name = "nvram",
188	.mode = S_IRUSR \| S_IWUSR,
189	.owner = THIS_MODULE,
190	},
191	.size = sizeof(nvram_t),
192	.read = qla2x00_sysfs_read_nvram,
193	.write = qla2x00_sysfs_write_nvram,
194	};
195
196	void
197	qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
198	{
199	struct Scsi_Host *host = ha->host;
200
201	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
202	sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
203	}
204
205	void
206	qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
207	{
208	struct Scsi_Host *host = ha->host;
209
210	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
211	sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
212	}
213
214	/* Host attributes. */
215
216	static void
217	qla2x00_get_host_port_id(struct Scsi_Host *shost)
218	{
219	scsi_qla_host_t *ha = to_qla_host(shost);
220
221	fc_host_port_id(shost) = ha->d_id.b.domain << 16 \|
222	ha->d_id.b.area << 8 \| ha->d_id.b.al_pa;
223	}
224
225	static void
226	qla2x00_get_starget_node_name(struct scsi_target *starget)
227	{
228	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
229	scsi_qla_host_t *ha = to_qla_host(host);
bdf79621	230	fc_port_t *fcport;
8482e118	231	uint64_t node_name = 0;
8482e118	232
bdf79621	233	list_for_each_entry(fcport, &ha->fcports, list) {
	234	if (starget->id == fcport->os_target_id) {
	235	node_name = (uint64_t )fcport->node_name;
	236	break;
	237	}
	238	}
	239
	240	fc_starget_node_name(starget) = be64_to_cpu(node_name);
8482e118	241	}
	242
	243	static void
	244	qla2x00_get_starget_port_name(struct scsi_target *starget)
	245	{
	246	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
	247	scsi_qla_host_t *ha = to_qla_host(host);
bdf79621	248	fc_port_t *fcport;
8482e118	249	uint64_t port_name = 0;
8482e118	250
bdf79621	251	list_for_each_entry(fcport, &ha->fcports, list) {
	252	if (starget->id == fcport->os_target_id) {
	253	port_name = (uint64_t )fcport->port_name;
	254	break;
	255	}
	256	}
	257
	258	fc_starget_port_name(starget) = be64_to_cpu(port_name);
8482e118	259	}
	260
	261	static void
	262	qla2x00_get_starget_port_id(struct scsi_target *starget)
	263	{
	264	struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
	265	scsi_qla_host_t *ha = to_qla_host(host);
bdf79621	266	fc_port_t *fcport;
	267	uint32_t port_id = ~0U;
	268
	269	list_for_each_entry(fcport, &ha->fcports, list) {
	270	if (starget->id == fcport->os_target_id) {
	271	port_id = fcport->d_id.b.domain << 16 \|
	272	fcport->d_id.b.area << 8 \| fcport->d_id.b.al_pa;
	273	break;
	274	}
	275	}
8482e118	276
8482e118	277	fc_starget_port_id(starget) = port_id;
	278	}
	279
	280	static void
	281	qla2x00_get_rport_loss_tmo(struct fc_rport *rport)
	282	{
bdf79621	283	struct Scsi_Host *host = rport_to_shost(rport);
bdf79621	284	scsi_qla_host_t *ha = to_qla_host(host);
8482e118	285
	286	rport->dev_loss_tmo = ha->port_down_retry_count + 5;
	287	}
	288
	289	static void
	290	qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
	291	{
bdf79621	292	struct Scsi_Host *host = rport_to_shost(rport);
bdf79621	293	scsi_qla_host_t *ha = to_qla_host(host);
8482e118	294
	295	if (timeout)
	296	ha->port_down_retry_count = timeout;
	297	else
	298	ha->port_down_retry_count = 1;
	299
	300	rport->dev_loss_tmo = ha->port_down_retry_count + 5;
	301	}
	302
	303	static struct fc_function_template qla2xxx_transport_functions = {
	304
	305	.show_host_node_name = 1,
	306	.show_host_port_name = 1,
	307	.get_host_port_id = qla2x00_get_host_port_id,
	308	.show_host_port_id = 1,
	309
bdf79621	310	.dd_fcrport_size = sizeof(struct fc_port *),
8482e118	311
	312	.get_starget_node_name = qla2x00_get_starget_node_name,
	313	.show_starget_node_name = 1,
	314	.get_starget_port_name = qla2x00_get_starget_port_name,
	315	.show_starget_port_name = 1,
	316	.get_starget_port_id = qla2x00_get_starget_port_id,
	317	.show_starget_port_id = 1,
	318
	319	.get_rport_dev_loss_tmo = qla2x00_get_rport_loss_tmo,
	320	.set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo,
	321	.show_rport_dev_loss_tmo = 1,
	322
	323	};
	324
	325	struct scsi_transport_template *
	326	qla2x00_alloc_transport_tmpl(void)
	327	{
	328	return (fc_attach_transport(&qla2xxx_transport_functions));
	329	}
	330
	331	void
	332	qla2x00_init_host_attr(scsi_qla_host_t *ha)
	333	{
	334	fc_host_node_name(ha->host) =
	335	be64_to_cpu((uint64_t )ha->init_cb->node_name);
	336	fc_host_port_name(ha->host) =
	337	be64_to_cpu((uint64_t )ha->init_cb->port_name);
	338	}