24 int compute_lba_geom_from_tot_sectors(struct device *dev)  in compute_lba_geom_from_tot_sectors()  argument
30 	if(dev->heads && dev->sectors && dev->tracks)  in compute_lba_geom_from_tot_sectors()
36 	if(dev->tot_sectors == 0) {  in compute_lba_geom_from_tot_sectors()
42 	if(dev->tot_sectors &&  in compute_lba_geom_from_tot_sectors()
43 	   dev->tot_sectors <= 8640 && dev->tot_sectors % 40 == 0) {  in compute_lba_geom_from_tot_sectors()
44 		if(dev->tot_sectors <= 540) {  in compute_lba_geom_from_tot_sectors()
46 			dev->tracks = 40;  in compute_lba_geom_from_tot_sectors()
47 			dev->heads = 1;  in compute_lba_geom_from_tot_sectors()
48 		} else if(dev->tot_sectors <= 1080) {  in compute_lba_geom_from_tot_sectors()
52 			if(dev->heads == 1)  in compute_lba_geom_from_tot_sectors()
53 				dev->tracks = 80;  in compute_lba_geom_from_tot_sectors()
55 				dev->tracks = 40;  in compute_lba_geom_from_tot_sectors()
56 				dev->heads = 2;  in compute_lba_geom_from_tot_sectors()
61 			dev->tracks = 80;  in compute_lba_geom_from_tot_sectors()
62 			dev->heads = 2;  in compute_lba_geom_from_tot_sectors()
64 		dev->sectors =  in compute_lba_geom_from_tot_sectors()
65 			(uint16_t)(dev->tot_sectors / dev->heads / dev->tracks);  in compute_lba_geom_from_tot_sectors()
70 	if(!dev->sectors || !dev->heads) {  in compute_lba_geom_from_tot_sectors()
71 		dev->sectors = 63;  in compute_lba_geom_from_tot_sectors()
73 		if (dev->tot_sectors < 16u*dev->sectors*1024)  in compute_lba_geom_from_tot_sectors()
74 			dev->heads = 16;  in compute_lba_geom_from_tot_sectors()
75 		else if (dev->tot_sectors < 32u*dev->sectors*1024)  in compute_lba_geom_from_tot_sectors()
76 			dev->heads = 32;  in compute_lba_geom_from_tot_sectors()
77 		else if (dev->tot_sectors < 64u*dev->sectors*1024)  in compute_lba_geom_from_tot_sectors()
78 			dev->heads = 64;  in compute_lba_geom_from_tot_sectors()
79 		else if (dev->tot_sectors < 128u*dev->sectors*1024)  in compute_lba_geom_from_tot_sectors()
80 			dev->heads = 128;  in compute_lba_geom_from_tot_sectors()
82 			dev->heads = 255;  in compute_lba_geom_from_tot_sectors()
86 	if(!dev->tracks) {  in compute_lba_geom_from_tot_sectors()
87 		sect_per_track = dev->heads * dev->sectors;  in compute_lba_geom_from_tot_sectors()
88 		tracks = (dev->tot_sectors + sect_per_track - 1) /  in compute_lba_geom_from_tot_sectors()
90 		dev->tracks = tracks;  in compute_lba_geom_from_tot_sectors()