From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- drivers/scsi/ps3rom.c | 443 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 443 insertions(+) create mode 100644 drivers/scsi/ps3rom.c (limited to 'drivers/scsi/ps3rom.c') diff --git a/drivers/scsi/ps3rom.c b/drivers/scsi/ps3rom.c new file mode 100644 index 000000000..f75c0b5cd --- /dev/null +++ b/drivers/scsi/ps3rom.c @@ -0,0 +1,443 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PS3 BD/DVD/CD-ROM Storage Driver + * + * Copyright (C) 2007 Sony Computer Entertainment Inc. + * Copyright 2007 Sony Corp. + */ + +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include +#include + + +#define DEVICE_NAME "ps3rom" + +#define BOUNCE_SIZE (64*1024) + +#define PS3ROM_MAX_SECTORS (BOUNCE_SIZE >> 9) + + +struct ps3rom_private { + struct ps3_storage_device *dev; + struct scsi_cmnd *curr_cmd; +}; + + +#define LV1_STORAGE_SEND_ATAPI_COMMAND (1) + +struct lv1_atapi_cmnd_block { + u8 pkt[32]; /* packet command block */ + u32 pktlen; /* should be 12 for ATAPI 8020 */ + u32 blocks; + u32 block_size; + u32 proto; /* transfer mode */ + u32 in_out; /* transfer direction */ + u64 buffer; /* parameter except command block */ + u32 arglen; /* length above */ +}; + +enum lv1_atapi_proto { + NON_DATA_PROTO = 0, + PIO_DATA_IN_PROTO = 1, + PIO_DATA_OUT_PROTO = 2, + DMA_PROTO = 3 +}; + +enum lv1_atapi_in_out { + DIR_WRITE = 0, /* memory -> device */ + DIR_READ = 1 /* device -> memory */ +}; + + +static int ps3rom_slave_configure(struct scsi_device *scsi_dev) +{ + struct ps3rom_private *priv = shost_priv(scsi_dev->host); + struct ps3_storage_device *dev = priv->dev; + + dev_dbg(&dev->sbd.core, "%s:%u: id %u, lun %llu, channel %u\n", __func__, + __LINE__, scsi_dev->id, scsi_dev->lun, scsi_dev->channel); + + /* + * ATAPI SFF8020 devices use MODE_SENSE_10, + * so we can prohibit MODE_SENSE_6 + */ + scsi_dev->use_10_for_ms = 1; + + /* we don't support {READ,WRITE}_6 */ + scsi_dev->use_10_for_rw = 1; + + return 0; +} + +static int ps3rom_atapi_request(struct ps3_storage_device *dev, + struct scsi_cmnd *cmd) +{ + struct lv1_atapi_cmnd_block atapi_cmnd; + unsigned char opcode = cmd->cmnd[0]; + int res; + u64 lpar; + + dev_dbg(&dev->sbd.core, "%s:%u: send ATAPI command 0x%02x\n", __func__, + __LINE__, opcode); + + memset(&atapi_cmnd, 0, sizeof(struct lv1_atapi_cmnd_block)); + memcpy(&atapi_cmnd.pkt, cmd->cmnd, 12); + atapi_cmnd.pktlen = 12; + atapi_cmnd.block_size = 1; /* transfer size is block_size * blocks */ + atapi_cmnd.blocks = atapi_cmnd.arglen = scsi_bufflen(cmd); + atapi_cmnd.buffer = dev->bounce_lpar; + + switch (cmd->sc_data_direction) { + case DMA_FROM_DEVICE: + if (scsi_bufflen(cmd) >= CD_FRAMESIZE) + atapi_cmnd.proto = DMA_PROTO; + else + atapi_cmnd.proto = PIO_DATA_IN_PROTO; + atapi_cmnd.in_out = DIR_READ; + break; + + case DMA_TO_DEVICE: + if (scsi_bufflen(cmd) >= CD_FRAMESIZE) + atapi_cmnd.proto = DMA_PROTO; + else + atapi_cmnd.proto = PIO_DATA_OUT_PROTO; + atapi_cmnd.in_out = DIR_WRITE; + scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size); + break; + + default: + atapi_cmnd.proto = NON_DATA_PROTO; + break; + } + + lpar = ps3_mm_phys_to_lpar(__pa(&atapi_cmnd)); + res = lv1_storage_send_device_command(dev->sbd.dev_id, + LV1_STORAGE_SEND_ATAPI_COMMAND, + lpar, sizeof(atapi_cmnd), + atapi_cmnd.buffer, + atapi_cmnd.arglen, &dev->tag); + if (res == LV1_DENIED_BY_POLICY) { + dev_dbg(&dev->sbd.core, + "%s:%u: ATAPI command 0x%02x denied by policy\n", + __func__, __LINE__, opcode); + return DID_ERROR << 16; + } + + if (res) { + dev_err(&dev->sbd.core, + "%s:%u: ATAPI command 0x%02x failed %d\n", __func__, + __LINE__, opcode, res); + return DID_ERROR << 16; + } + + return 0; +} + +static inline unsigned int srb10_lba(const struct scsi_cmnd *cmd) +{ + return cmd->cmnd[2] << 24 | cmd->cmnd[3] << 16 | cmd->cmnd[4] << 8 | + cmd->cmnd[5]; +} + +static inline unsigned int srb10_len(const struct scsi_cmnd *cmd) +{ + return cmd->cmnd[7] << 8 | cmd->cmnd[8]; +} + +static int ps3rom_read_request(struct ps3_storage_device *dev, + struct scsi_cmnd *cmd, u32 start_sector, + u32 sectors) +{ + int res; + + dev_dbg(&dev->sbd.core, "%s:%u: read %u sectors starting at %u\n", + __func__, __LINE__, sectors, start_sector); + + res = lv1_storage_read(dev->sbd.dev_id, + dev->regions[dev->region_idx].id, start_sector, + sectors, 0, dev->bounce_lpar, &dev->tag); + if (res) { + dev_err(&dev->sbd.core, "%s:%u: read failed %d\n", __func__, + __LINE__, res); + return DID_ERROR << 16; + } + + return 0; +} + +static int ps3rom_write_request(struct ps3_storage_device *dev, + struct scsi_cmnd *cmd, u32 start_sector, + u32 sectors) +{ + int res; + + dev_dbg(&dev->sbd.core, "%s:%u: write %u sectors starting at %u\n", + __func__, __LINE__, sectors, start_sector); + + scsi_sg_copy_to_buffer(cmd, dev->bounce_buf, dev->bounce_size); + + res = lv1_storage_write(dev->sbd.dev_id, + dev->regions[dev->region_idx].id, start_sector, + sectors, 0, dev->bounce_lpar, &dev->tag); + if (res) { + dev_err(&dev->sbd.core, "%s:%u: write failed %d\n", __func__, + __LINE__, res); + return DID_ERROR << 16; + } + + return 0; +} + +static int ps3rom_queuecommand_lck(struct scsi_cmnd *cmd, + void (*done)(struct scsi_cmnd *)) +{ + struct ps3rom_private *priv = shost_priv(cmd->device->host); + struct ps3_storage_device *dev = priv->dev; + unsigned char opcode; + int res; + + priv->curr_cmd = cmd; + cmd->scsi_done = done; + + opcode = cmd->cmnd[0]; + /* + * While we can submit READ/WRITE SCSI commands as ATAPI commands, + * it's recommended for various reasons (performance, error handling, + * ...) to use lv1_storage_{read,write}() instead + */ + switch (opcode) { + case READ_10: + res = ps3rom_read_request(dev, cmd, srb10_lba(cmd), + srb10_len(cmd)); + break; + + case WRITE_10: + res = ps3rom_write_request(dev, cmd, srb10_lba(cmd), + srb10_len(cmd)); + break; + + default: + res = ps3rom_atapi_request(dev, cmd); + break; + } + + if (res) { + memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); + cmd->result = res; + cmd->sense_buffer[0] = 0x70; + cmd->sense_buffer[2] = ILLEGAL_REQUEST; + priv->curr_cmd = NULL; + cmd->scsi_done(cmd); + } + + return 0; +} + +static DEF_SCSI_QCMD(ps3rom_queuecommand) + +static int decode_lv1_status(u64 status, unsigned char *sense_key, + unsigned char *asc, unsigned char *ascq) +{ + if (((status >> 24) & 0xff) != SAM_STAT_CHECK_CONDITION) + return -1; + + *sense_key = (status >> 16) & 0xff; + *asc = (status >> 8) & 0xff; + *ascq = status & 0xff; + return 0; +} + +static irqreturn_t ps3rom_interrupt(int irq, void *data) +{ + struct ps3_storage_device *dev = data; + struct Scsi_Host *host; + struct ps3rom_private *priv; + struct scsi_cmnd *cmd; + int res; + u64 tag, status; + unsigned char sense_key, asc, ascq; + + res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); + /* + * status = -1 may mean that ATAPI transport completed OK, but + * ATAPI command itself resulted CHECK CONDITION + * so, upper layer should issue REQUEST_SENSE to check the sense data + */ + + if (tag != dev->tag) + dev_err(&dev->sbd.core, + "%s:%u: tag mismatch, got %llx, expected %llx\n", + __func__, __LINE__, tag, dev->tag); + + if (res) { + dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", + __func__, __LINE__, res, status); + return IRQ_HANDLED; + } + + host = ps3_system_bus_get_drvdata(&dev->sbd); + priv = shost_priv(host); + cmd = priv->curr_cmd; + + if (!status) { + /* OK, completed */ + if (cmd->sc_data_direction == DMA_FROM_DEVICE) { + int len; + + len = scsi_sg_copy_from_buffer(cmd, + dev->bounce_buf, + dev->bounce_size); + + scsi_set_resid(cmd, scsi_bufflen(cmd) - len); + } + cmd->result = DID_OK << 16; + goto done; + } + + if (cmd->cmnd[0] == REQUEST_SENSE) { + /* SCSI spec says request sense should never get error */ + dev_err(&dev->sbd.core, "%s:%u: end error without autosense\n", + __func__, __LINE__); + cmd->result = DID_ERROR << 16 | SAM_STAT_CHECK_CONDITION; + goto done; + } + + if (decode_lv1_status(status, &sense_key, &asc, &ascq)) { + cmd->result = DID_ERROR << 16; + goto done; + } + + scsi_build_sense_buffer(0, cmd->sense_buffer, sense_key, asc, ascq); + cmd->result = SAM_STAT_CHECK_CONDITION; + +done: + priv->curr_cmd = NULL; + cmd->scsi_done(cmd); + return IRQ_HANDLED; +} + +static struct scsi_host_template ps3rom_host_template = { + .name = DEVICE_NAME, + .slave_configure = ps3rom_slave_configure, + .queuecommand = ps3rom_queuecommand, + .can_queue = 1, + .this_id = 7, + .sg_tablesize = SG_ALL, + .emulated = 1, /* only sg driver uses this */ + .max_sectors = PS3ROM_MAX_SECTORS, + .module = THIS_MODULE, +}; + + +static int ps3rom_probe(struct ps3_system_bus_device *_dev) +{ + struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); + int error; + struct Scsi_Host *host; + struct ps3rom_private *priv; + + if (dev->blk_size != CD_FRAMESIZE) { + dev_err(&dev->sbd.core, + "%s:%u: cannot handle block size %llu\n", __func__, + __LINE__, dev->blk_size); + return -EINVAL; + } + + dev->bounce_size = BOUNCE_SIZE; + dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); + if (!dev->bounce_buf) + return -ENOMEM; + + error = ps3stor_setup(dev, ps3rom_interrupt); + if (error) + goto fail_free_bounce; + + host = scsi_host_alloc(&ps3rom_host_template, + sizeof(struct ps3rom_private)); + if (!host) { + dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed\n", + __func__, __LINE__); + error = -ENOMEM; + goto fail_teardown; + } + + priv = shost_priv(host); + ps3_system_bus_set_drvdata(&dev->sbd, host); + priv->dev = dev; + + /* One device/LUN per SCSI bus */ + host->max_id = 1; + host->max_lun = 1; + + error = scsi_add_host(host, &dev->sbd.core); + if (error) { + dev_err(&dev->sbd.core, "%s:%u: scsi_host_alloc failed %d\n", + __func__, __LINE__, error); + error = -ENODEV; + goto fail_host_put; + } + + scsi_scan_host(host); + return 0; + +fail_host_put: + scsi_host_put(host); + ps3_system_bus_set_drvdata(&dev->sbd, NULL); +fail_teardown: + ps3stor_teardown(dev); +fail_free_bounce: + kfree(dev->bounce_buf); + return error; +} + +static int ps3rom_remove(struct ps3_system_bus_device *_dev) +{ + struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); + struct Scsi_Host *host = ps3_system_bus_get_drvdata(&dev->sbd); + + scsi_remove_host(host); + ps3stor_teardown(dev); + scsi_host_put(host); + ps3_system_bus_set_drvdata(&dev->sbd, NULL); + kfree(dev->bounce_buf); + return 0; +} + +static struct ps3_system_bus_driver ps3rom = { + .match_id = PS3_MATCH_ID_STOR_ROM, + .core.name = DEVICE_NAME, + .core.owner = THIS_MODULE, + .probe = ps3rom_probe, + .remove = ps3rom_remove +}; + + +static int __init ps3rom_init(void) +{ + return ps3_system_bus_driver_register(&ps3rom); +} + +static void __exit ps3rom_exit(void) +{ + ps3_system_bus_driver_unregister(&ps3rom); +} + +module_init(ps3rom_init); +module_exit(ps3rom_exit); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("PS3 BD/DVD/CD-ROM Storage Driver"); +MODULE_AUTHOR("Sony Corporation"); +MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_ROM); -- cgit v1.2.3