mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
eb3db27507
LPDDR chips use PFOW window for sending commands, reading status and capabilites requesting. This pfow.h - contains definitions for PFOW window fileds, possible commands, error flags and some common macro function to avoid code duplications. Signed-off-by: Alexey Korolev <akorolev@infradead.org> Acked-by: Jared Hulbert <jaredeh@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
159 lines
5.6 KiB
C
159 lines
5.6 KiB
C
/* Primary function overlay window definitions
|
|
* and service functions used by LPDDR chips
|
|
*/
|
|
#ifndef __LINUX_MTD_PFOW_H
|
|
#define __LINUX_MTD_PFOW_H
|
|
|
|
#include <linux/mtd/qinfo.h>
|
|
|
|
/* PFOW registers addressing */
|
|
/* Address of symbol "P" */
|
|
#define PFOW_QUERY_STRING_P 0x0000
|
|
/* Address of symbol "F" */
|
|
#define PFOW_QUERY_STRING_F 0x0002
|
|
/* Address of symbol "O" */
|
|
#define PFOW_QUERY_STRING_O 0x0004
|
|
/* Address of symbol "W" */
|
|
#define PFOW_QUERY_STRING_W 0x0006
|
|
/* Identification info for LPDDR chip */
|
|
#define PFOW_MANUFACTURER_ID 0x0020
|
|
#define PFOW_DEVICE_ID 0x0022
|
|
/* Address in PFOW where prog buffer can can be found */
|
|
#define PFOW_PROGRAM_BUFFER_OFFSET 0x0040
|
|
/* Size of program buffer in words */
|
|
#define PFOW_PROGRAM_BUFFER_SIZE 0x0042
|
|
/* Address command code register */
|
|
#define PFOW_COMMAND_CODE 0x0080
|
|
/* command data register */
|
|
#define PFOW_COMMAND_DATA 0x0084
|
|
/* command address register lower address bits */
|
|
#define PFOW_COMMAND_ADDRESS_L 0x0088
|
|
/* command address register upper address bits */
|
|
#define PFOW_COMMAND_ADDRESS_H 0x008a
|
|
/* number of bytes to be proggrammed lower address bits */
|
|
#define PFOW_DATA_COUNT_L 0x0090
|
|
/* number of bytes to be proggrammed higher address bits */
|
|
#define PFOW_DATA_COUNT_H 0x0092
|
|
/* command execution register, the only possible value is 0x01 */
|
|
#define PFOW_COMMAND_EXECUTE 0x00c0
|
|
/* 0x01 should be written at this address to clear buffer */
|
|
#define PFOW_CLEAR_PROGRAM_BUFFER 0x00c4
|
|
/* device program/erase suspend register */
|
|
#define PFOW_PROGRAM_ERASE_SUSPEND 0x00c8
|
|
/* device status register */
|
|
#define PFOW_DSR 0x00cc
|
|
|
|
/* LPDDR memory device command codes */
|
|
/* They are possible values of PFOW command code register */
|
|
#define LPDDR_WORD_PROGRAM 0x0041
|
|
#define LPDDR_BUFF_PROGRAM 0x00E9
|
|
#define LPDDR_BLOCK_ERASE 0x0020
|
|
#define LPDDR_LOCK_BLOCK 0x0061
|
|
#define LPDDR_UNLOCK_BLOCK 0x0062
|
|
#define LPDDR_READ_BLOCK_LOCK_STATUS 0x0065
|
|
#define LPDDR_INFO_QUERY 0x0098
|
|
#define LPDDR_READ_OTP 0x0097
|
|
#define LPDDR_PROG_OTP 0x00C0
|
|
#define LPDDR_RESUME 0x00D0
|
|
|
|
/* Defines possible value of PFOW command execution register */
|
|
#define LPDDR_START_EXECUTION 0x0001
|
|
|
|
/* Defines possible value of PFOW program/erase suspend register */
|
|
#define LPDDR_SUSPEND 0x0001
|
|
|
|
/* Possible values of PFOW device status register */
|
|
/* access R - read; RC read & clearable */
|
|
#define DSR_DPS (1<<1) /* RC; device protect status
|
|
* 0 - not protected 1 - locked */
|
|
#define DSR_PSS (1<<2) /* R; program suspend status;
|
|
* 0-prog in progress/completed,
|
|
* 1- prog suspended */
|
|
#define DSR_VPPS (1<<3) /* RC; 0-Vpp OK, * 1-Vpp low */
|
|
#define DSR_PROGRAM_STATUS (1<<4) /* RC; 0-successful, 1-error */
|
|
#define DSR_ERASE_STATUS (1<<5) /* RC; erase or blank check status;
|
|
* 0-success erase/blank check,
|
|
* 1 blank check error */
|
|
#define DSR_ESS (1<<6) /* R; erase suspend status;
|
|
* 0-erase in progress/complete,
|
|
* 1 erase suspended */
|
|
#define DSR_READY_STATUS (1<<7) /* R; Device status
|
|
* 0-busy,
|
|
* 1-ready */
|
|
#define DSR_RPS (0x3<<8) /* RC; region program status
|
|
* 00 - Success,
|
|
* 01-re-program attempt in region with
|
|
* object mode data,
|
|
* 10-object mode program w attempt in
|
|
* region with control mode data
|
|
* 11-attempt to program invalid half
|
|
* with 0x41 command */
|
|
#define DSR_AOS (1<<12) /* RC; 1- AO related failure */
|
|
#define DSR_AVAILABLE (1<<15) /* R; Device availbility
|
|
* 1 - Device available
|
|
* 0 - not available */
|
|
|
|
/* The superset of all possible error bits in DSR */
|
|
#define DSR_ERR 0x133A
|
|
|
|
static inline void send_pfow_command(struct map_info *map,
|
|
unsigned long cmd_code, unsigned long adr,
|
|
unsigned long len, map_word *datum)
|
|
{
|
|
int bits_per_chip = map_bankwidth(map) * 8;
|
|
int chipnum;
|
|
struct lpddr_private *lpddr = map->fldrv_priv;
|
|
chipnum = adr >> lpddr->chipshift;
|
|
|
|
map_write(map, CMD(cmd_code), map->pfow_base + PFOW_COMMAND_CODE);
|
|
map_write(map, CMD(adr & ((1<<bits_per_chip) - 1)),
|
|
map->pfow_base + PFOW_COMMAND_ADDRESS_L);
|
|
map_write(map, CMD(adr>>bits_per_chip),
|
|
map->pfow_base + PFOW_COMMAND_ADDRESS_H);
|
|
if (len) {
|
|
map_write(map, CMD(len & ((1<<bits_per_chip) - 1)),
|
|
map->pfow_base + PFOW_DATA_COUNT_L);
|
|
map_write(map, CMD(len>>bits_per_chip),
|
|
map->pfow_base + PFOW_DATA_COUNT_H);
|
|
}
|
|
if (datum)
|
|
map_write(map, *datum, map->pfow_base + PFOW_COMMAND_DATA);
|
|
|
|
/* Command execution start */
|
|
map_write(map, CMD(LPDDR_START_EXECUTION),
|
|
map->pfow_base + PFOW_COMMAND_EXECUTE);
|
|
}
|
|
|
|
static inline void print_drs_error(unsigned dsr)
|
|
{
|
|
int prog_status = (dsr & DSR_RPS) >> 8;
|
|
|
|
if (!(dsr & DSR_AVAILABLE))
|
|
printk(KERN_NOTICE"DSR.15: (0) Device not Available\n");
|
|
if (prog_status & 0x03)
|
|
printk(KERN_NOTICE"DSR.9,8: (11) Attempt to program invalid "
|
|
"half with 41h command\n");
|
|
else if (prog_status & 0x02)
|
|
printk(KERN_NOTICE"DSR.9,8: (10) Object Mode Program attempt "
|
|
"in region with Control Mode data\n");
|
|
else if (prog_status & 0x01)
|
|
printk(KERN_NOTICE"DSR.9,8: (01) Program attempt in region "
|
|
"with Object Mode data\n");
|
|
if (!(dsr & DSR_READY_STATUS))
|
|
printk(KERN_NOTICE"DSR.7: (0) Device is Busy\n");
|
|
if (dsr & DSR_ESS)
|
|
printk(KERN_NOTICE"DSR.6: (1) Erase Suspended\n");
|
|
if (dsr & DSR_ERASE_STATUS)
|
|
printk(KERN_NOTICE"DSR.5: (1) Erase/Blank check error\n");
|
|
if (dsr & DSR_PROGRAM_STATUS)
|
|
printk(KERN_NOTICE"DSR.4: (1) Program Error\n");
|
|
if (dsr & DSR_VPPS)
|
|
printk(KERN_NOTICE"DSR.3: (1) Vpp low detect, operation "
|
|
"aborted\n");
|
|
if (dsr & DSR_PSS)
|
|
printk(KERN_NOTICE"DSR.2: (1) Program suspended\n");
|
|
if (dsr & DSR_DPS)
|
|
printk(KERN_NOTICE"DSR.1: (1) Aborted Erase/Program attempt "
|
|
"on locked block\n");
|
|
}
|
|
#endif /* __LINUX_MTD_PFOW_H */
|