2 * Linux driver attachment glue for aic7770 based controllers.
4 * Copyright (c) 2000-2003 Adaptec Inc.
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39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $
42 #include "aic7xxx_osm.h"
44 #include <linux/device.h>
45 #include <linux/eisa.h>
47 #define EISA_MFCTR_CHAR0(ID) (char)(((ID>>26) & 0x1F) | '@') /* Bits 26-30 */
48 #define EISA_MFCTR_CHAR1(ID) (char)(((ID>>21) & 0x1F) | '@') /* Bits 21-25 */
49 #define EISA_MFCTR_CHAR2(ID) (char)(((ID>>16) & 0x1F) | '@') /* Bits 16-20 */
50 #define EISA_PRODUCT_ID(ID) (short)((ID>>4) & 0xFFF) /* Bits 4-15 */
51 #define EISA_REVISION_ID(ID) (uint8_t)(ID & 0x0F) /* Bits 0-3 */
53 static int aic7770_eisa_dev_probe(struct device *dev);
54 static int aic7770_eisa_dev_remove(struct device *dev);
55 static struct eisa_driver aic7770_driver = {
58 .probe = aic7770_eisa_dev_probe,
59 .remove = aic7770_eisa_dev_remove,
63 typedef struct device *aic7770_dev_t;
65 static int aic7770_linux_config(struct aic7770_identity *entry,
66 aic7770_dev_t dev, u_int eisaBase);
69 ahc_linux_eisa_init(void)
71 struct eisa_device_id *eid;
72 struct aic7770_identity *id;
75 if (aic7xxx_probe_eisa_vl == 0)
79 * Linux requires the EISA IDs to be specified in
80 * the EISA ID string format. Perform the conversion
81 * and setup a table with a NUL terminal entry.
83 aic7770_driver.id_table = malloc(sizeof(struct eisa_device_id) *
84 (ahc_num_aic7770_devs + 1),
86 if (aic7770_driver.id_table == NULL)
89 for (eid = (struct eisa_device_id *)aic7770_driver.id_table,
90 id = aic7770_ident_table, i = 0;
91 i < ahc_num_aic7770_devs; eid++, id++, i++) {
93 sprintf(eid->sig, "%c%c%c%03X%01X",
94 EISA_MFCTR_CHAR0(id->full_id),
95 EISA_MFCTR_CHAR1(id->full_id),
96 EISA_MFCTR_CHAR2(id->full_id),
97 EISA_PRODUCT_ID(id->full_id),
98 EISA_REVISION_ID(id->full_id));
103 return eisa_driver_register(&aic7770_driver);
107 ahc_linux_eisa_exit(void)
109 if(aic7xxx_probe_eisa_vl != 0 && aic7770_driver.id_table != NULL) {
110 eisa_driver_unregister(&aic7770_driver);
111 free(aic7770_driver.id_table, M_DEVBUF);
116 aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
119 struct ahc_softc *ahc;
125 * Allocate a softc for this card and
126 * set it up for attachment by our
127 * common detect routine.
129 sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
130 name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
134 ahc = ahc_alloc(&aic7xxx_driver_template, name);
137 error = aic7770_config(ahc, entry, eisaBase);
144 dev->driver_data = (void *)ahc;
145 if (aic7xxx_detect_complete)
146 error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
151 aic7770_map_registers(struct ahc_softc *ahc, u_int port)
154 * Lock out other contenders for our i/o space.
156 if (request_region(port, AHC_EISA_IOSIZE, "aic7xxx") == 0)
158 ahc->tag = BUS_SPACE_PIO;
159 ahc->bsh.ioport = port;
164 aic7770_map_int(struct ahc_softc *ahc, u_int irq)
170 if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
173 error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
175 ahc->platform_data->irq = irq;
181 aic7770_eisa_dev_probe(struct device *dev)
183 struct eisa_device *edev;
185 edev = to_eisa_device(dev);
186 return (aic7770_linux_config(aic7770_ident_table + edev->id.driver_data,
187 dev, edev->base_addr+AHC_EISA_SLOT_OFFSET));
191 aic7770_eisa_dev_remove(struct device *dev)
193 struct ahc_softc *ahc;
197 * We should be able to just perform
198 * the free directly, but check our
199 * list for extra sanity.
202 ahc = ahc_find_softc((struct ahc_softc *)dev->driver_data);
207 ahc_intr_enable(ahc, FALSE);