1 // SPDX-License-Identifier: GPL-2.0
3  *  Copyright (c) 1996-2000 Russell King.
36 	if (dr->disc_size == 0 && dr->disc_size_high == 0)  in adfs_partition()
39 	nr_sects = (le32_to_cpu(dr->disc_size_high) << 23) |  in adfs_partition()
40 		   (le32_to_cpu(dr->disc_size) >> 9);  in adfs_partition()
43 		strlcat(state->pp_buf, " [", PAGE_SIZE);  in adfs_partition()
44 		strlcat(state->pp_buf, name, PAGE_SIZE);  in adfs_partition()
45 		strlcat(state->pp_buf, "]", PAGE_SIZE);  in adfs_partition()
65 	struct riscix_part part[8];  member
79 		return -1;  in riscix_partition()
81 	strlcat(state->pp_buf, " [RISCiX]", PAGE_SIZE);  in riscix_partition()
84 	if (rr->magic == RISCIX_MAGIC) {  in riscix_partition()
86 		int part;  in riscix_partition()  local
88 		strlcat(state->pp_buf, " <", PAGE_SIZE);  in riscix_partition()
91 		for (part = 0; part < 8; part++) {  in riscix_partition()
92 			if (rr->part[part].one &&  in riscix_partition()
93 			    memcmp(rr->part[part].name, "All\0", 4)) {  in riscix_partition()
95 					le32_to_cpu(rr->part[part].start),  in riscix_partition()
96 					le32_to_cpu(rr->part[part].length));  in riscix_partition()
97 				strlcat(state->pp_buf, "(", PAGE_SIZE);  in riscix_partition()
98 				strlcat(state->pp_buf, rr->part[part].name, PAGE_SIZE);  in riscix_partition()
99 				strlcat(state->pp_buf, ")", PAGE_SIZE);  in riscix_partition()
103 		strlcat(state->pp_buf, " >\n", PAGE_SIZE);  in riscix_partition()
133 	strlcat(state->pp_buf, " [Linux]", PAGE_SIZE);  in linux_partition()
139 		return -1;  in linux_partition()
141 	strlcat(state->pp_buf, " <", PAGE_SIZE);  in linux_partition()
142 	while (linuxp->magic == cpu_to_le32(LINUX_NATIVE_MAGIC) ||  in linux_partition()
143 	       linuxp->magic == cpu_to_le32(LINUX_SWAP_MAGIC)) {  in linux_partition()
144 		if (slot == state->limit)  in linux_partition()
147 				 le32_to_cpu(linuxp->start_sect),  in linux_partition()
148 				 le32_to_cpu(linuxp->nr_sects));  in linux_partition()
151 	strlcat(state->pp_buf, " >", PAGE_SIZE);  in linux_partition()
170 	 * Try Cumana style partitions - sector 6 contains ADFS boot block  in adfspart_check_CUMANA()
173 	 * There are unknowns in this code - is the 'cylinder number' of the  in adfspart_check_CUMANA()
174 	 * next partition relative to the start of this one - I'm assuming  in adfspart_check_CUMANA()
188 			return -1;  in adfspart_check_CUMANA()
190 		if (slot == state->limit)  in adfspart_check_CUMANA()
200 			   (dr->heads + (dr->lowsector & 0x40 ? 1 : 0)) *  in adfspart_check_CUMANA()
201 			   dr->secspertrack;  in adfspart_check_CUMANA()
208 		start_blk += nr_sects >> (BLOCK_SIZE_BITS - 9);  in adfspart_check_CUMANA()
209 		nr_sects = 0; /* hmm - should be partition size */  in adfspart_check_CUMANA()
217 			/* RISCiX - we don't know how to find the next one. */  in adfspart_check_CUMANA()
229 		if (slot == -1)  in adfspart_check_CUMANA()
230 			return -1;  in adfspart_check_CUMANA()
241  * Params : hd		- pointer to gendisk structure to store partition info.
242  *	    dev		- device number to access.
244  * Returns: -1 on error, 0 for no ADFS boot sector, 1 for ok.
248  *	    hda2 = non-ADFS partition.
261 		return -1;  in adfspart_check_ADFS()
269 	heads = dr->heads + ((dr->lowsector >> 6) & 1);  in adfspart_check_ADFS()
270 	sectscyl = dr->secspertrack * heads;  in adfspart_check_ADFS()
276 	 * Work out start of non-adfs partition.  in adfspart_check_ADFS()
278 	nr_sects = get_capacity(state->disk) - start_sect;  in adfspart_check_ADFS()
296 	strlcat(state->pp_buf, "\n", PAGE_SIZE);  in adfspart_check_ADFS()
335 	sum -= le32_to_cpu(*(__le32 *)(&data[508]));  in valid_ics_sector()
342  * Params : hd		- pointer to gendisk structure to store partition info.
343  *	    dev		- device number to access.
344  * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
358 	 * Try ICS style partitions - sector 0 contains partition info.  in adfspart_check_ICS()
362 	    	return -1;  in adfspart_check_ICS()
369 	strlcat(state->pp_buf, " [ICS]", PAGE_SIZE);  in adfspart_check_ICS()
371 	for (slot = 1, p = (const struct ics_part *)data; p->size; p++) {  in adfspart_check_ICS()
372 		u32 start = le32_to_cpu(p->start);  in adfspart_check_ICS()
373 		s32 size = le32_to_cpu(p->size); /* yes, it's signed. */  in adfspart_check_ICS()
375 		if (slot == state->limit)  in adfspart_check_ICS()
380 		 * this partition - in effect it says that this does not  in adfspart_check_ICS()
384 			size = -size;  in adfspart_check_ICS()
387 			 * Our own extension - We use the first sector  in adfspart_check_ICS()
394 				size -= 1;  in adfspart_check_ICS()
403 	strlcat(state->pp_buf, "\n", PAGE_SIZE);  in adfspart_check_ICS()
438  * Params : hd		- pointer to gendisk structure to store partition info.
439  *	    dev		- device number to access.
440  * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
456 		return -1;  in adfspart_check_POWERTEC()
463 	strlcat(state->pp_buf, " [POWERTEC]", PAGE_SIZE);  in adfspart_check_POWERTEC()
466 		u32 start = le32_to_cpu(p->start);  in adfspart_check_POWERTEC()
467 		u32 size = le32_to_cpu(p->size);  in adfspart_check_POWERTEC()
474 	strlcat(state->pp_buf, "\n", PAGE_SIZE);  in adfspart_check_POWERTEC()
518 		return -1;  in adfspart_check_EESOX()
531 		if (memcmp(p->magic, "Eesox", 6))  in adfspart_check_EESOX()
534 		next = le32_to_cpu(p->start);  in adfspart_check_EESOX()
536 			put_partition(state, slot++, start, next - start);  in adfspart_check_EESOX()
543 		size = get_capacity(state->disk);  in adfspart_check_EESOX()
544 		put_partition(state, slot++, start, size - start);  in adfspart_check_EESOX()
545 		strlcat(state->pp_buf, "\n", PAGE_SIZE);  in adfspart_check_EESOX()