// SPDX-License-Identifier: GPL-2.0-or-later
/*
* sata_sil24.c - Driver for Silicon Image 3124/3132 SATA-2 controllers
*
* Copyright 2005 Tejun Heo
*
* Based on preview driver from Silicon Image.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gfp.h>
#include <linux/pci.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <linux/libata.h>
#define DRV_NAME "sata_sil24"
#define DRV_VERSION "1.1"
/*
* Port request block (PRB) 32 bytes
*/
struct sil24_prb {
__le16 ctrl;
__le16 prot;
__le32 rx_cnt;
u8 fis[6 * 4];
};
/*
* Scatter gather entry (SGE) 16 bytes
*/
struct sil24_sge {
__le64 addr;
__le32 cnt;
__le32 flags;
};
enum {
SIL24_HOST_BAR = 0,
SIL24_PORT_BAR = 2,
/* sil24 fetches in chunks of 64bytes. The first block
* contains the PRB and two SGEs. From the second block, it's
* consisted of four SGEs and called SGT. Calculate the
* number of SGTs that fit into one page.
*/
SIL24_PRB_SZ = sizeof(struct sil24_prb)
+ 2 * sizeof(struct sil24_sge),
SIL24_MAX_SGT = (PAGE_SIZE - SIL24_PRB_SZ)
/ (4 * sizeof(struct sil24_sge)),
/* This will give us one unused SGEs for ATA. This extra SGE
* will be used to store CDB for ATAPI devices.
*/
SIL24_MAX_SGE = 4 * SIL24_MAX_SGT + 1,
/*
* Global controller registers (128 bytes @ BAR0)
*/
/* 32 bit regs */
HOST_SLOT_STAT = 0x00, /* 32 bit slot stat * 4 */
HOST_CTRL = 0x40,
HOST_IRQ_STAT = 0x44,
HOST_PHY_CFG = 0x48,
HOST_BIST_CTRL = 0x50,
HOST_BIST_PTRN = 0x54,
HOST_BIST_STAT = 0x58,
HOST_MEM_BIST_STAT = 0x5c,
HOST_FLASH_CMD = 0x70,
/* 8 bit regs */
HOST_FLASH_DATA = 0x74,
HOST_TRANSITION_DETECT = 0x75,
HOST_GPIO_CTRL = 0x76,
HOST_I2C_ADDR = 0x78, /* 32 bit */
HOST_I2C_DATA = 0x7c,
HOST_I2C_XFER_CNT = 0x7e,
HOST_I2C_CTRL = 0x7f,
/* HOST_SLOT_STAT bits */
HOST_SSTAT_ATTN = (1 << 31),
/* HOST_CTRL bits */
HOST_CTRL_M66EN = (1 << 16), /* M66EN PCI bus signal */
HOST_CTRL_TRDY = (1 << 17), /* latched PCI TRDY */
HOST_CTRL_STOP = (1 << 18), /* latched PCI STOP */
HOST_CTRL_DEVSEL = (1 << 19), /* latched PCI DEVSEL */
HOST_CTRL_REQ64 = (1 << 20), /* latched PCI REQ64 */
HOST_CTRL_GLOBAL_RST = (1 << 31), /* global reset */
/*
* Port registers
* (8192 bytes @ +0x0000, +0x2000, +0x4000 and +0x6000 @ BAR2)
*/
PORT_REGS_SIZE = 0x2000,
