2  * Routines common to all CFI-type probes.
3  * (C) 2001-2003 Red Hat, Inc.
12 #include <linux/mtd/cfi.h>
19 			     struct cfi_private *cfi);
24 	struct cfi_private *cfi;  in mtd_do_chip_probe()  local
26 	/* First probe the map to see if we have CFI stuff there. */  in mtd_do_chip_probe()
27 	cfi = genprobe_ident_chips(map, cp);  in mtd_do_chip_probe()
29 	if (!cfi)  in mtd_do_chip_probe()
32 	map->fldrv_priv = cfi;  in mtd_do_chip_probe()
40 		if (mtd->size > map->size) {  in mtd_do_chip_probe()
42 			       (unsigned long)mtd->size >> 10,  in mtd_do_chip_probe()
43 			       (unsigned long)map->size >> 10);  in mtd_do_chip_probe()
44 			mtd->size = map->size;  in mtd_do_chip_probe()
51 	kfree(cfi->cfiq);  in mtd_do_chip_probe()
52 	kfree(cfi);  in mtd_do_chip_probe()
53 	map->fldrv_priv = NULL;  in mtd_do_chip_probe()
61 	struct cfi_private cfi;  in genprobe_ident_chips()  local
67 	memset(&cfi, 0, sizeof(cfi));  in genprobe_ident_chips()
69 	/* Call the probetype-specific code with all permutations of  in genprobe_ident_chips()
71 	if (!genprobe_new_chip(map, cp, &cfi)) {  in genprobe_ident_chips()
74 			 cp->name, map->name);  in genprobe_ident_chips()
78 #if 0 /* Let the CFI probe routine do this sanity check. The Intel and AMD  in genprobe_ident_chips()
79 	 probe routines won't ever return a broken CFI structure anyway,  in genprobe_ident_chips()
82 	if (cfi.cfiq->NumEraseRegions == 0) {  in genprobe_ident_chips()
84 		kfree(cfi.cfiq);  in genprobe_ident_chips()
88 	cfi.chipshift = cfi.cfiq->DevSize;  in genprobe_ident_chips()
90 	if (cfi_interleave_is_1(&cfi)) {  in genprobe_ident_chips()
92 	} else if (cfi_interleave_is_2(&cfi)) {  in genprobe_ident_chips()
93 		cfi.chipshift++;  in genprobe_ident_chips()
94 	} else if (cfi_interleave_is_4((&cfi))) {  in genprobe_ident_chips()
95 		cfi.chipshift += 2;  in genprobe_ident_chips()
96 	} else if (cfi_interleave_is_8(&cfi)) {  in genprobe_ident_chips()
97 		cfi.chipshift += 3;  in genprobe_ident_chips()
102 	cfi.numchips = 1;  in genprobe_ident_chips()
108 	max_chips = map->size >> cfi.chipshift;  in genprobe_ident_chips()
116 		kfree(cfi.cfiq);  in genprobe_ident_chips()
129 		cp->probe_chip(map, i << cfi.chipshift, chip_map, &cfi);  in genprobe_ident_chips()
137 	retcfi = kmalloc(struct_size(retcfi, chips, cfi.numchips), GFP_KERNEL);  in genprobe_ident_chips()
140 		kfree(cfi.cfiq);  in genprobe_ident_chips()
145 	memcpy(retcfi, &cfi, sizeof(cfi));  in genprobe_ident_chips()
146 	memset(&retcfi->chips[0], 0, sizeof(struct flchip) * cfi.numchips);  in genprobe_ident_chips()
148 	for (i = 0, j = 0; (j < cfi.numchips) && (i < max_chips); i++) {  in genprobe_ident_chips()
150 			struct flchip *pchip = &retcfi->chips[j++];  in genprobe_ident_chips()
152 			pchip->start = (i << cfi.chipshift);  in genprobe_ident_chips()
153 			pchip->state = FL_READY;  in genprobe_ident_chips()
154 			init_waitqueue_head(&pchip->wq);  in genprobe_ident_chips()
155 			mutex_init(&pchip->mutex);  in genprobe_ident_chips()
165 			     struct cfi_private *cfi)  in genprobe_new_chip()  argument
167 	int min_chips = (map_bankwidth(map)/4?:1); /* At most 4-bytes wide. */  in genprobe_new_chip()
176 		cfi->interleave = nr_chips;  in genprobe_new_chip()
178 		/* Minimum device size. Don't look for one 8-bit device  in genprobe_new_chip()
179 		   in a 16-bit bus, etc. */  in genprobe_new_chip()
183 			cfi->device_type = type;  in genprobe_new_chip()
185 			if (cp->probe_chip(map, 0, NULL, cfi))  in genprobe_new_chip()
201 	struct cfi_private *cfi = map->fldrv_priv;  in cfi_cmdset_unknown()  local
202 	__u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID;  in cfi_cmdset_unknown()
234 	struct cfi_private *cfi = map->fldrv_priv;  in check_cmd_set()  local
235 	__u16 type = primary?cfi->cfiq->P_ID:cfi->cfiq->A_ID;  in check_cmd_set()
266 MODULE_DESCRIPTION("Helper routines for flash chip probe code");