// SPDX-License-Identifier: GPL-2.0+/* * Driver for Alauda-based card readers * * Current development and maintenance by: * (c) 2005 Daniel Drake <dsd@gentoo.org> * * The 'Alauda' is a chip manufacturered by RATOC for OEM use. * * Alauda implements a vendor-specific command set to access two media reader * ports (XD, SmartMedia). This driver converts SCSI commands to the commands * which are accepted by these devices. * * The driver was developed through reverse-engineering, with the help of the * sddr09 driver which has many similarities, and with some help from the * (very old) vendor-supplied GPL sma03 driver. * * For protocol info, see http://alauda.sourceforge.net */ #include <linux/module.h>#include <linux/slab.h> #include <scsi/scsi.h>#include <scsi/scsi_cmnd.h>#include <scsi/scsi_device.h> #include "usb.h"#include "transport.h"#include "protocol.h"#include "debug.h"#include "scsiglue.h" #define DRV_NAME "ums-alauda" MODULE_DESCRIPTION("Driver for Alauda-based card readers");MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>");MODULE_LICENSE("GPL");MODULE_IMPORT_NS("USB_STORAGE"); /* * Status bytes */#define ALAUDA_STATUS_ERROR 0x01#define ALAUDA_STATUS_READY 0x40 /* * Control opcodes (for request field) */#define ALAUDA_GET_XD_MEDIA_STATUS 0x08#define ALAUDA_GET_SM_MEDIA_STATUS 0x98#define ALAUDA_ACK_XD_MEDIA_CHANGE 0x0a#define ALAUDA_ACK_SM_MEDIA_CHANGE 0x9a#define ALAUDA_GET_XD_MEDIA_SIG 0x86#define ALAUDA_GET_SM_MEDIA_SIG 0x96 /* * Bulk command identity (byte 0) */#define ALAUDA_BULK_CMD 0x40 /* * Bulk opcodes (byte 1) */#define ALAUDA_BULK_GET_REDU_DATA 0x85#define ALAUDA_BULK_READ_BLOCK 0x94#define ALAUDA_BULK_ERASE_BLOCK 0xa3#define ALAUDA_BULK_WRITE_BLOCK 0xb4#define ALAUDA_BULK_GET_STATUS2 0xb7#define ALAUDA_BULK_RESET_MEDIA 0xe0 /* * Port to operate on (byte 8) */#define ALAUDA_PORT_XD 0x00#define ALAUDA_PORT_SM 0x01 /* * LBA and PBA are unsigned ints. Special values. */#define UNDEF 0xffff#define SPARE 0xfffe#define UNUSABLE 0xfffd struct alauda_media_info { unsigned long capacity; /* total media size in bytes */ unsigned int pagesize; /* page size in bytes */ unsigned int blocksize; /* number of pages per block */ unsigned int uzonesize; /* number of usable blocks per zone */ unsigned int zonesize; /* number of blocks per zone */ unsigned int blockmask; /* mask to get page from address */ unsigned char pageshift; unsigned char blockshift; unsigned char zoneshift; u16 **lba_to_pba; /* logical to physical block map */ u16 **pba_to_lba; /* physical to logical block map */}; struct alauda_info { struct alauda_media_info port[2]; int wr_ep; /* endpoint to write data out of */ unsigned char sense_key; unsigned long sense_asc; /* additional sense code */ unsigned long sense_ascq; /* additional sense code qualifier */ bool media_initialized;}; #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) )#define LSB_of(s) ((s)&0xFF)#define MSB_of(s) ((s)>>8) #define MEDIA_PORT(us) us->srb->device->lun#define MEDIA_INFO(us) ((struct alauda_info *)us->extra)->port[MEDIA_PORT(us)] #define PBA_LO(pba) ((pba & 0xF) << 5)#define PBA_HI(pba) (pba >> 3)#define PBA_ZONE(pba) (pba >> 11) static int init_alauda(struct us_data *us); /* * The table of devices */#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ vendorName, productName, useProtocol, useTransport, \ initFunction, flags) \{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } static const struct usb_device_id alauda_usb_ids[] = {# include "unusual_alauda.h" { } /* Terminating entry */};MODULE_DEVICE_TABLE(usb, alauda_usb_ids); #undef UNUSUAL_DEV /* * The flags table */#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ vendor_name, product_name, use_protocol, use_transport, \ init_function, Flags) \{ \ .vendorName = vendor_name, \ .productName = product_name, \ .useProtocol = use_protocol, \ .useTransport = use_transport, \ .initFunction = init_function, \} static const struct us_unusual_dev alauda_unusual_dev_list[] = {# include "unusual_alauda.h" { } /* Terminating entry */}; #undef UNUSUAL_DEV /* * Media handling */ struct alauda_card_info { unsigned char id; /* id byte */ unsigned char chipshift; /* 1<<cs bytes total capacity */ unsigned char pageshift; /* 1<<ps bytes in a page */ unsigned char blockshift; /* 1<<bs pages per block */ unsigned char zoneshift; /* 1<<zs blocks per zone */}; static const struct alauda_card_info alauda_card_ids[] = { /* NAND flash */ { 0x6e, 20, 8, 4, 8}, /* 1 MB */ { 0xe8, 20, 8, 4, 8}, /* 1 MB */ { 0xec, 20, 8, 4, 8}, /* 1 MB */ { 0x64, 21, 8, 4, 9}, /* 2 MB */ { 0xea, 21, 8, 4, 9}, /* 2 MB */ { 0x6b, 22, 9, 4, 9}, /* 4 MB */ { 0xe3, 22, 9, 4, 9}, /* 4 MB */ { 0xe5, 22, 9, 4, 9}, /* 4 MB */ { 0xe6, 23, 9, 4, 10}, /* 8 MB */ { 0x73, 24, 9, 5, 10}, /* 16 MB */ { 0x75, 25, 9, 5, 10}, /* 32 MB */ { 0x76, 26, 9, 5, 10}, /* 64 MB */ { 0x79, 27, 9, 5, 10}, /* 128 MB */ { 0x71, 28, 9, 5, 10}, /* 256 MB */ /* MASK ROM */ { 0x5d, 21, 9, 4, 8}, /* 2 MB */ { 0xd5, 22, 9, 4, 9}, /* 4 MB */ { 0xd6, 23, 9, 4, 10}, /* 8 MB */ { 0x57, 24, 9, 4, 11}, /* 16 MB */ { 0x58, 25, 9, 4, 12}, /* 32 MB */ { 0,}}; static const struct alauda_card_info *alauda_card_find_id(unsigned char id){ int i; for (i = 0; alauda_card_ids[i].id != 0; i++) if (alauda_card_ids[i].id == id) return &(alauda_card_ids[i]); return NULL;} /* * ECC computation. */ static unsigned char parity[256];static unsigned char ecc2[256]; static void nand_init_ecc(void){ int i, j, a; parity[0] = 0; for (i = 1; i < 256; i++) parity[i] = (parity[i&(i-1)] ^ 1); for (i = 0; i < 256; i++) { a = 0; for (j = 0; j < 8; j++) { if (i & (1<<j)) { if ((j & 1) == 0) a ^= 0x04; if ((j & 2) == 0) a ^= 0x10; if ((j & 4) == 0) a ^= 0x40; } } ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0)); }} /* compute 3-byte ecc on 256 bytes */static void nand_compute_ecc(unsigned char *data, unsigned char *ecc){ int i, j, a; unsigned char par = 0, bit, bits[8] = {0}; /* collect 16 checksum bits */ for (i = 0; i < 256; i++) { par ^= data[i]; bit = parity[data[i]]; for (j = 0; j < 8; j++) if ((i & (1<<j)) == 0) bits[j] ^= bit; } /* put 4+4+4 = 12 bits in the ecc */ a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0]; ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4]; ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); ecc[2] = ecc2[par];} static int nand_compare_ecc(unsigned char *data, unsigned char *ecc){ return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]);} static void nand_store_ecc(unsigned char *data, unsigned char *ecc){ memcpy(data, ecc, 3);} /* * Alauda driver */ /* * Forget our PBA <---> LBA mappings for a particular port */static void alauda_free_maps (struct alauda_media_info *media_info){ unsigned int shift = media_info->zoneshift + media_info->blockshift + media_info->pageshift; unsigned int num_zones = media_info->capacity >> shift; unsigned int i; if (media_info->lba_to_pba != NULL) for (i = 0; i < num_zones; i++) { kfree(media_info->lba_to_pba[i]); media_info->lba_to_pba[i] = NULL; } if (media_info->pba_to_lba != NULL) for (i = 0; i < num_zones; i++) { kfree(media_info->pba_to_lba[i]); media_info->pba_to_lba[i] = NULL; }} /* * Returns 2 bytes of status data * The first byte describes media status, and second byte describes door status */static int alauda_get_media_status(struct us_data *us, unsigned char *data){ int rc; unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_GET_XD_MEDIA_STATUS; else command = ALAUDA_GET_SM_MEDIA_STATUS; rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe, command, 0xc0, 0, 1, data, 2); if (rc == USB_STOR_XFER_GOOD) usb_stor_dbg(us, "Media status %02X %02X\n", data[0], data[1]); return rc;} /* * Clears the "media was changed" bit so that we know when it changes again * in the future. */static int alauda_ack_media(struct us_data *us){ unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_ACK_XD_MEDIA_CHANGE; else command = ALAUDA_ACK_SM_MEDIA_CHANGE; return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, command, 0x40, 0, 1, NULL, 0);} /* * Retrieves a 4-byte media signature, which indicates manufacturer, capacity, * and some other details. */static int alauda_get_media_signature(struct us_data *us, unsigned char *data){ unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_GET_XD_MEDIA_SIG; else command = ALAUDA_GET_SM_MEDIA_SIG; return usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe, command, 0xc0, 0, 0, data, 4);} /* * Resets the media status (but not the whole device?) */static int alauda_reset_media(struct us_data *us){ unsigned char *command = us->iobuf; memset(command, 0, 9); command[0] = ALAUDA_BULK_CMD; command[1] = ALAUDA_BULK_RESET_MEDIA; command[8] = MEDIA_PORT(us); return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, command, 9, NULL);} /* * Examines the media and deduces capacity, etc. */static int alauda_init_media(struct us_data *us){ unsigned char *data = us->iobuf; int ready = 0; const struct alauda_card_info *media_info; unsigned int num_zones; while (ready == 0) { msleep(20); if (alauda_get_media_status(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; if (data[0] & 0x10) ready = 1; } usb_stor_dbg(us, "We are ready for action!\n"); if (alauda_ack_media(us) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; msleep(10); if (alauda_get_media_status(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; if (data[0] != 0x14) { usb_stor_dbg(us, "Media not ready after ack\n"); return USB_STOR_TRANSPORT_ERROR; } if (alauda_get_media_signature(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; usb_stor_dbg(us, "Media signature: %4ph\n", data); media_info = alauda_card_find_id(data[1]); if (media_info == NULL) { pr_warn("alauda_init_media: Unrecognised media signature: %4ph\n", data); return USB_STOR_TRANSPORT_ERROR; } MEDIA_INFO(us).capacity = 1 << media_info->chipshift; usb_stor_dbg(us, "Found media with capacity: %ldMB\n", MEDIA_INFO(us).capacity >> 20); MEDIA_INFO(us).pageshift = media_info->pageshift; MEDIA_INFO(us).blockshift = media_info->blockshift; MEDIA_INFO(us).zoneshift = media_info->zoneshift; MEDIA_INFO(us).pagesize = 1 << media_info->pageshift; MEDIA_INFO(us).blocksize = 1 << media_info->blockshift; MEDIA_INFO(us).zonesize = 1 << media_info->zoneshift; MEDIA_INFO(us).uzonesize = ((1 << media_info->zoneshift) / 128) * 125; MEDIA_INFO(us).blockmask = MEDIA_INFO(us).blocksize - 1; num_zones = MEDIA_INFO(us).capacity >> (MEDIA_INFO(us).zoneshift + MEDIA_INFO(us).blockshift + MEDIA_INFO(us).pageshift); MEDIA_INFO(us).pba_to_lba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO); MEDIA_INFO(us).lba_to_pba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO); if (MEDIA_INFO(us).pba_to_lba == NULL || MEDIA_INFO(us).lba_to_pba == NULL) return USB_STOR_TRANSPORT_ERROR; if (alauda_reset_media(us) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; return USB_STOR_TRANSPORT_GOOD;} /* * Examines the media status and does the right thing when the media has gone, * appeared, or changed. */static int alauda_check_media(struct us_data *us){ struct alauda_info *info = (struct alauda_info *) us->extra; unsigned char *status = us->iobuf; int rc; rc = alauda_get_media_status(us, status); if (rc != USB_STOR_XFER_GOOD) { status[0] = 0xF0; /* Pretend there's no media */ status[1] = 0; } /* Check for no media or door open */ if ((status[0] & 0x80) || ((status[0] & 0x1F) == 0x10) || ((status[1] & 0x01) == 0)) { usb_stor_dbg(us, "No media, or door open\n"); alauda_free_maps(&MEDIA_INFO(us)); info->sense_key = 0x02; info->sense_asc = 0x3A; info->sense_ascq = 0x00; return USB_STOR_TRANSPORT_FAILED; } /* Check for media change */ if (status[0] & 0x08 || !info->media_initialized) { usb_stor_dbg(us, "Media change detected\n"); alauda_free_maps(&MEDIA_INFO(us)); rc = alauda_init_media(us); if (rc == USB_STOR_TRANSPORT_GOOD) info->media_initialized = true; info->sense_key = UNIT_ATTENTION; info->sense_asc = 0x28; info->sense_ascq = 0x00; return USB_STOR_TRANSPORT_FAILED; } return USB_STOR_TRANSPORT_GOOD;} /* * Checks the status from the 2nd status register * Returns 3 bytes of status data, only the first is known */static int alauda_check_status2(struct us_data *us)Lines 1–500 of 1274. 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// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Alauda-based card readers * * Current development and maintenance by: * (c) 2005 Daniel Drake <dsd@gentoo.org> * * The 'Alauda' is a chip manufacturered by RATOC for OEM use. * * Alauda implements a vendor-specific command set to access two media reader * ports (XD, SmartMedia). This driver converts SCSI commands to the commands * which are accepted by these devices. * * The driver was developed through reverse-engineering, with the help of the * sddr09 driver which has many similarities, and with some help from the * (very old) vendor-supplied GPL sma03 driver. * * For protocol info, see http://alauda.sourceforge.net */ #include <linux/module.h> #include <linux/slab.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> #include "usb.h" #include "transport.h" #include "protocol.h" #include "debug.h" #include "scsiglue.h" #define DRV_NAME "ums-alauda" MODULE_DESCRIPTION("Driver for Alauda-based card readers"); MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>"); MODULE_LICENSE("GPL"); MODULE_IMPORT_NS("USB_STORAGE"); /* * Status bytes */ #define ALAUDA_STATUS_ERROR 0x01 #define ALAUDA_STATUS_READY 0x40 /* * Control opcodes (for request field) */ #define ALAUDA_GET_XD_MEDIA_STATUS 0x08 #define ALAUDA_GET_SM_MEDIA_STATUS 0x98 #define ALAUDA_ACK_XD_MEDIA_CHANGE 0x0a #define ALAUDA_ACK_SM_MEDIA_CHANGE 0x9a #define ALAUDA_GET_XD_MEDIA_SIG 0x86 #define ALAUDA_GET_SM_MEDIA_SIG 0x96 /* * Bulk command identity (byte 0) */ #define ALAUDA_BULK_CMD 0x40 /* * Bulk opcodes (byte 1) */ #define ALAUDA_BULK_GET_REDU_DATA 0x85 #define ALAUDA_BULK_READ_BLOCK 0x94 #define ALAUDA_BULK_ERASE_BLOCK 0xa3 #define ALAUDA_BULK_WRITE_BLOCK 0xb4 #define ALAUDA_BULK_GET_STATUS2 0xb7 #define ALAUDA_BULK_RESET_MEDIA 0xe0 /* * Port to operate on (byte 8) */ #define ALAUDA_PORT_XD 0x00 #define ALAUDA_PORT_SM 0x01 /* * LBA and PBA are unsigned ints. Special values. */ #define UNDEF 0xffff #define SPARE 0xfffe #define UNUSABLE 0xfffd struct alauda_media_info { unsigned long capacity; /* total media size in bytes */ unsigned int pagesize; /* page size in bytes */ unsigned int blocksize; /* number of pages per block */ unsigned int uzonesize; /* number of usable blocks per zone */ unsigned int zonesize; /* number of blocks per zone */ unsigned int blockmask; /* mask to get page from address */ unsigned char pageshift; unsigned char blockshift; unsigned char zoneshift; u16 **lba_to_pba; /* logical to physical block map */ u16 **pba_to_lba; /* physical to logical block map */ }; struct alauda_info { struct alauda_media_info port[2]; int wr_ep; /* endpoint to write data out of */ unsigned char sense_key; unsigned long sense_asc; /* additional sense code */ unsigned long sense_ascq; /* additional sense code qualifier */ bool media_initialized; }; #define short_pack(lsb,msb) ( ((u16)(lsb)) | ( ((u16)(msb))<<8 ) ) #define LSB_of(s) ((s)&0xFF) #define MSB_of(s) ((s)>>8) #define MEDIA_PORT(us) us->srb->device->lun #define MEDIA_INFO(us) ((struct alauda_info *)us->extra)->port[MEDIA_PORT(us)] #define PBA_LO(pba) ((pba & 0xF) << 5) #define PBA_HI(pba) (pba >> 3) #define PBA_ZONE(pba) (pba >> 11) static int init_alauda(struct us_data *us); /* * The table of devices */ #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ vendorName, productName, useProtocol, useTransport, \ initFunction, flags) \ { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ .driver_info = (flags) } static const struct usb_device_id alauda_usb_ids[] = { # include "unusual_alauda.h" { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, alauda_usb_ids); #undef UNUSUAL_DEV /* * The flags table */ #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ vendor_name, product_name, use_protocol, use_transport, \ init_function, Flags) \ { \ .vendorName = vendor_name, \ .productName = product_name, \ .useProtocol = use_protocol, \ .useTransport = use_transport, \ .initFunction = init_function, \ } static const struct us_unusual_dev alauda_unusual_dev_list[] = { # include "unusual_alauda.h" { } /* Terminating entry */ }; #undef UNUSUAL_DEV /* * Media handling */ struct alauda_card_info { unsigned char id; /* id byte */ unsigned char chipshift; /* 1<<cs bytes total capacity */ unsigned char pageshift; /* 1<<ps bytes in a page */ unsigned char blockshift; /* 1<<bs pages per block */ unsigned char zoneshift; /* 1<<zs blocks per zone */ }; static const struct alauda_card_info alauda_card_ids[] = { /* NAND flash */ { 0x6e, 20, 8, 4, 8}, /* 1 MB */ { 0xe8, 20, 8, 4, 8}, /* 1 MB */ { 0xec, 20, 8, 4, 8}, /* 1 MB */ { 0x64, 21, 8, 4, 9}, /* 2 MB */ { 0xea, 21, 8, 4, 9}, /* 2 MB */ { 0x6b, 22, 9, 4, 9}, /* 4 MB */ { 0xe3, 22, 9, 4, 9}, /* 4 MB */ { 0xe5, 22, 9, 4, 9}, /* 4 MB */ { 0xe6, 23, 9, 4, 10}, /* 8 MB */ { 0x73, 24, 9, 5, 10}, /* 16 MB */ { 0x75, 25, 9, 5, 10}, /* 32 MB */ { 0x76, 26, 9, 5, 10}, /* 64 MB */ { 0x79, 27, 9, 5, 10}, /* 128 MB */ { 0x71, 28, 9, 5, 10}, /* 256 MB */ /* MASK ROM */ { 0x5d, 21, 9, 4, 8}, /* 2 MB */ { 0xd5, 22, 9, 4, 9}, /* 4 MB */ { 0xd6, 23, 9, 4, 10}, /* 8 MB */ { 0x57, 24, 9, 4, 11}, /* 16 MB */ { 0x58, 25, 9, 4, 12}, /* 32 MB */ { 0,} }; static const struct alauda_card_info *alauda_card_find_id(unsigned char id) { int i; for (i = 0; alauda_card_ids[i].id != 0; i++) if (alauda_card_ids[i].id == id) return &(alauda_card_ids[i]); return NULL; } /* * ECC computation. */ static unsigned char parity[256]; static unsigned char ecc2[256]; static void nand_init_ecc(void) { int i, j, a; parity[0] = 0; for (i = 1; i < 256; i++) parity[i] = (parity[i&(i-1)] ^ 1); for (i = 0; i < 256; i++) { a = 0; for (j = 0; j < 8; j++) { if (i & (1<<j)) { if ((j & 1) == 0) a ^= 0x04; if ((j & 2) == 0) a ^= 0x10; if ((j & 4) == 0) a ^= 0x40; } } ecc2[i] = ~(a ^ (a<<1) ^ (parity[i] ? 0xa8 : 0)); } } /* compute 3-byte ecc on 256 bytes */ static void nand_compute_ecc(unsigned char *data, unsigned char *ecc) { int i, j, a; unsigned char par = 0, bit, bits[8] = {0}; /* collect 16 checksum bits */ for (i = 0; i < 256; i++) { par ^= data[i]; bit = parity[data[i]]; for (j = 0; j < 8; j++) if ((i & (1<<j)) == 0) bits[j] ^= bit; } /* put 4+4+4 = 12 bits in the ecc */ a = (bits[3] << 6) + (bits[2] << 4) + (bits[1] << 2) + bits[0]; ecc[0] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); a = (bits[7] << 6) + (bits[6] << 4) + (bits[5] << 2) + bits[4]; ecc[1] = ~(a ^ (a<<1) ^ (parity[par] ? 0xaa : 0)); ecc[2] = ecc2[par]; } static int nand_compare_ecc(unsigned char *data, unsigned char *ecc) { return (data[0] == ecc[0] && data[1] == ecc[1] && data[2] == ecc[2]); } static void nand_store_ecc(unsigned char *data, unsigned char *ecc) { memcpy(data, ecc, 3); } /* * Alauda driver */ /* * Forget our PBA <---> LBA mappings for a particular port */ static void alauda_free_maps (struct alauda_media_info *media_info) { unsigned int shift = media_info->zoneshift + media_info->blockshift + media_info->pageshift; unsigned int num_zones = media_info->capacity >> shift; unsigned int i; if (media_info->lba_to_pba != NULL) for (i = 0; i < num_zones; i++) { kfree(media_info->lba_to_pba[i]); media_info->lba_to_pba[i] = NULL; } if (media_info->pba_to_lba != NULL) for (i = 0; i < num_zones; i++) { kfree(media_info->pba_to_lba[i]); media_info->pba_to_lba[i] = NULL; } } /* * Returns 2 bytes of status data * The first byte describes media status, and second byte describes door status */ static int alauda_get_media_status(struct us_data *us, unsigned char *data) { int rc; unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_GET_XD_MEDIA_STATUS; else command = ALAUDA_GET_SM_MEDIA_STATUS; rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe, command, 0xc0, 0, 1, data, 2); if (rc == USB_STOR_XFER_GOOD) usb_stor_dbg(us, "Media status %02X %02X\n", data[0], data[1]); return rc; } /* * Clears the "media was changed" bit so that we know when it changes again * in the future. */ static int alauda_ack_media(struct us_data *us) { unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_ACK_XD_MEDIA_CHANGE; else command = ALAUDA_ACK_SM_MEDIA_CHANGE; return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, command, 0x40, 0, 1, NULL, 0); } /* * Retrieves a 4-byte media signature, which indicates manufacturer, capacity, * and some other details. */ static int alauda_get_media_signature(struct us_data *us, unsigned char *data) { unsigned char command; if (MEDIA_PORT(us) == ALAUDA_PORT_XD) command = ALAUDA_GET_XD_MEDIA_SIG; else command = ALAUDA_GET_SM_MEDIA_SIG; return usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe, command, 0xc0, 0, 0, data, 4); } /* * Resets the media status (but not the whole device?) */ static int alauda_reset_media(struct us_data *us) { unsigned char *command = us->iobuf; memset(command, 0, 9); command[0] = ALAUDA_BULK_CMD; command[1] = ALAUDA_BULK_RESET_MEDIA; command[8] = MEDIA_PORT(us); return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, command, 9, NULL); } /* * Examines the media and deduces capacity, etc. */ static int alauda_init_media(struct us_data *us) { unsigned char *data = us->iobuf; int ready = 0; const struct alauda_card_info *media_info; unsigned int num_zones; while (ready == 0) { msleep(20); if (alauda_get_media_status(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; if (data[0] & 0x10) ready = 1; } usb_stor_dbg(us, "We are ready for action!\n"); if (alauda_ack_media(us) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; msleep(10); if (alauda_get_media_status(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; if (data[0] != 0x14) { usb_stor_dbg(us, "Media not ready after ack\n"); return USB_STOR_TRANSPORT_ERROR; } if (alauda_get_media_signature(us, data) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; usb_stor_dbg(us, "Media signature: %4ph\n", data); media_info = alauda_card_find_id(data[1]); if (media_info == NULL) { pr_warn("alauda_init_media: Unrecognised media signature: %4ph\n", data); return USB_STOR_TRANSPORT_ERROR; } MEDIA_INFO(us).capacity = 1 << media_info->chipshift; usb_stor_dbg(us, "Found media with capacity: %ldMB\n", MEDIA_INFO(us).capacity >> 20); MEDIA_INFO(us).pageshift = media_info->pageshift; MEDIA_INFO(us).blockshift = media_info->blockshift; MEDIA_INFO(us).zoneshift = media_info->zoneshift; MEDIA_INFO(us).pagesize = 1 << media_info->pageshift; MEDIA_INFO(us).blocksize = 1 << media_info->blockshift; MEDIA_INFO(us).zonesize = 1 << media_info->zoneshift; MEDIA_INFO(us).uzonesize = ((1 << media_info->zoneshift) / 128) * 125; MEDIA_INFO(us).blockmask = MEDIA_INFO(us).blocksize - 1; num_zones = MEDIA_INFO(us).capacity >> (MEDIA_INFO(us).zoneshift + MEDIA_INFO(us).blockshift + MEDIA_INFO(us).pageshift); MEDIA_INFO(us).pba_to_lba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO); MEDIA_INFO(us).lba_to_pba = kcalloc(num_zones, sizeof(u16*), GFP_NOIO); if (MEDIA_INFO(us).pba_to_lba == NULL || MEDIA_INFO(us).lba_to_pba == NULL) return USB_STOR_TRANSPORT_ERROR; if (alauda_reset_media(us) != USB_STOR_XFER_GOOD) return USB_STOR_TRANSPORT_ERROR; return USB_STOR_TRANSPORT_GOOD; } /* * Examines the media status and does the right thing when the media has gone, * appeared, or changed. */ static int alauda_check_media(struct us_data *us) { struct alauda_info *info = (struct alauda_info *) us->extra; unsigned char *status = us->iobuf; int rc; rc = alauda_get_media_status(us, status); if (rc != USB_STOR_XFER_GOOD) { status[0] = 0xF0; /* Pretend there's no media */ status[1] = 0; } /* Check for no media or door open */ if ((status[0] & 0x80) || ((status[0] & 0x1F) == 0x10) || ((status[1] & 0x01) == 0)) { usb_stor_dbg(us, "No media, or door open\n"); alauda_free_maps(&MEDIA_INFO(us)); info->sense_key = 0x02; info->sense_asc = 0x3A; info->sense_ascq = 0x00; return USB_STOR_TRANSPORT_FAILED; } /* Check for media change */ if (status[0] & 0x08 || !info->media_initialized) { usb_stor_dbg(us, "Media change detected\n"); alauda_free_maps(&MEDIA_INFO(us)); rc = alauda_init_media(us); if (rc == USB_STOR_TRANSPORT_GOOD) info->media_initialized = true; info->sense_key = UNIT_ATTENTION; info->sense_asc = 0x28; info->sense_ascq = 0x00; return USB_STOR_TRANSPORT_FAILED; } return USB_STOR_TRANSPORT_GOOD; } /* * Checks the status from the 2nd status register * Returns 3 bytes of status data, only the first is known */ static int alauda_check_status2(struct us_data *us)