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freebsd-dev/sys/mips/cavium/octeon_ebt3000_cf.c
Juli Mallett cea2b8b915 Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive 
library:
o) Increase inline unit / large function growth limits for MIPS to accommodate
   the needs of the Simple Executive, which uses a shocking amount of inlining.
o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and
   the Octeon SoC.
o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific
   board numbers, specifically to support the MR320.
o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd,
   which improperly uses an evaluation board's board number and breaks board
   detection at runtime.  This board is sold by Portwell as the CAM-0100.
o) Add support for the RTC available on some Octeon boards.
o) Add support for the Octeon PCI bus.  Note that rman_[sg]et_virtual for IO
   ports can not work unless building for n64.
o) Clean up the CompactFlash driver to use Simple Executive macros and
   structures where possible (it would be advisable to use the Simple Executive
   API to set the PIO mode, too, but that is not done presently.)  Also use
   structures from FreeBSD's ATA layer rather than structures copied from
   Linux.
o) Print available Octeon SoC features on boot.
o) Add support for the Octeon timecounter.
o) Use the Simple Executive's routines rather than local copies for doing reads
   and writes to 64-bit addresses and use its macros for various device
   addresses rather than using local copies.
o) Rename octeon_board_real to octeon_is_simulation to reduce differences with
   Cavium-provided code originally written for Linux.  Also make it use the
   same simplified test that the Simple Executive and Linux both use rather
   than our complex one.
o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus
   to use normal interrupt allocation and setup routines.
o) Use the Simple Executive's bootmem facility to allocate physical memory for
   the kernel, rather than assuming we know which addresses we can steal.
   NB: This may reduce the amount of RAM the kernel reports you as having if
       you are leaving large temporary allocations made by U-Boot allocated
       when starting FreeBSD.
o) Add a port of the Cavium-provided Ethernet driver for Linux.  This changes
   Ethernet interface naming from rgmxN to octeN.  The new driver has vast
   improvements over the old one, both in performance and functionality, but
   does still have some features which have not been ported entirely and there
   may be unimplemented code that can be hit in everyday use.  I will make
   every effort to correct those as they are reported.
o) Support loading the kernel on non-contiguous cores.
o) Add very conservative support for harvesting randomness from the Octeon
   random number device.
o) Turn SMP on by default.
o) Clean up the style of the Octeon kernel configurations a little and make
   them compile with -march=octeon.
o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple
   Executive.
o) Modify the Simple Executive to build on FreeBSD and to build without
   executive-config.h or cvmx-config.h.  In the future we may want to
   revert part of these changes and supply executive-config.h and
   cvmx-config.h and access to the options contained in those files via
   kernel configuration files.
o) Modify the Simple Executive USB routines to support getting and setting
   of the USB PID.
2010-07-20 19:25:11 +00:00

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/***********************license start***************
* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
*
*
* For any questions regarding licensing please contact marketing@caviumnetworks.com
*
***********************license end**************************************/
/*
* octeon_ebt3000_cf.c
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bio.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/ata.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/power.h>
#include <sys/smp.h>
#include <sys/time.h>
#include <sys/timetc.h>
#include <sys/malloc.h>
#include <geom/geom.h>
#include <machine/clock.h>
#include <machine/locore.h>
#include <machine/md_var.h>
#include <machine/cpuregs.h>
#include <mips/cavium/octeon_pcmap_regs.h>
#include <contrib/octeon-sdk/cvmx.h>
/* ATA Commands */
#define CMD_READ_SECTOR 0x20
#define CMD_WRITE_SECTOR 0x30
#define CMD_IDENTIFY 0xEC
/* The ATA Task File */
#define TF_DATA 0x00
#define TF_ERROR 0x01
#define TF_PRECOMP 0x01
#define TF_SECTOR_COUNT 0x02
#define TF_SECTOR_NUMBER 0x03
#define TF_CYL_LSB 0x04
#define TF_CYL_MSB 0x05
#define TF_DRV_HEAD 0x06
#define TF_STATUS 0x07
#define TF_COMMAND 0x07
/* Status Register */
#define STATUS_BSY 0x80 /* Drive is busy */
#define STATUS_RDY 0x40 /* Drive is ready */
#define STATUS_DF 0x20 /* Device fault */
#define STATUS_DRQ 0x08 /* Data can be transferred */
/* Miscelaneous */
#define SECTOR_SIZE 512
#define WAIT_DELAY 1000
#define NR_TRIES 1000
#define SWAP_SHORT(x) ((x << 8) | (x >> 8))
#define MODEL_STR_SIZE 40
/* XXX */
extern cvmx_bootinfo_t *octeon_bootinfo;
/* Globals */
int bus_width;
void *base_addr;
/* Device softc */
struct cf_priv {
device_t dev;
struct drive_param *drive_param;
struct bio_queue_head cf_bq;
struct g_geom *cf_geom;
struct g_provider *cf_provider;
};
/* Device parameters */
struct drive_param{
union {
char buf[SECTOR_SIZE];
struct ata_params driveid;
} u;
char model[MODEL_STR_SIZE];
uint32_t nr_sectors;
uint16_t sector_size;
uint16_t heads;
uint16_t tracks;
uint16_t sec_track;
} drive_param;
/* GEOM class implementation */
static g_access_t cf_access;
static g_start_t cf_start;
static g_ioctl_t cf_ioctl;
struct g_class g_cf_class = {
.name = "CF",
.version = G_VERSION,
.start = cf_start,
.access = cf_access,
.ioctl = cf_ioctl,
};
/* Device methods */
static int cf_probe(device_t);
static void cf_identify(driver_t *, device_t);
static int cf_attach(device_t);
static int cf_attach_geom(void *, int);
/* ATA methods */
static int cf_cmd_identify(void);
static int cf_cmd_write(uint32_t, uint32_t, void *);
static int cf_cmd_read(uint32_t, uint32_t, void *);
static int cf_wait_busy(void);
static int cf_send_cmd(uint32_t, uint8_t);
static void cf_attach_geom_proxy(void *arg, int flag);
/* Miscelenous */
static void cf_swap_ascii(unsigned char[], char[]);
/* ------------------------------------------------------------------- *
* cf_access() *
* ------------------------------------------------------------------- */
static int cf_access (struct g_provider *pp, int r, int w, int e)
{
pp->sectorsize = drive_param.sector_size;
pp->stripesize = drive_param.heads * drive_param.sec_track * drive_param.sector_size;
pp->mediasize = pp->stripesize * drive_param.tracks;
return (0);
}
/* ------------------------------------------------------------------- *
* cf_start() *
* ------------------------------------------------------------------- */
static void cf_start (struct bio *bp)
{
int error;
/*
* Handle actual I/O requests. The request is passed down through
* the bio struct.
*/
if(bp->bio_cmd & BIO_GETATTR) {
if (g_handleattr_int(bp, "GEOM::fwsectors", drive_param.sec_track))
return;
if (g_handleattr_int(bp, "GEOM::fwheads", drive_param.heads))
return;
g_io_deliver(bp, ENOIOCTL);
return;
}
if ((bp->bio_cmd & (BIO_READ | BIO_WRITE))) {
if (bp->bio_cmd & BIO_READ) {
error = cf_cmd_read(bp->bio_length / drive_param.sector_size,
bp->bio_offset / drive_param.sector_size, bp->bio_data);
} else if (bp->bio_cmd & BIO_WRITE) {
error = cf_cmd_write(bp->bio_length / drive_param.sector_size,
bp->bio_offset/drive_param.sector_size, bp->bio_data);
} else {
printf("%s: unrecognized bio_cmd %x.\n", __func__, bp->bio_cmd);
error = ENOTSUP;
}
if (error != 0) {
g_io_deliver(bp, error);
return;
}
bp->bio_resid = 0;
bp->bio_completed = bp->bio_length;
g_io_deliver(bp, 0);
}
}
static int cf_ioctl (struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td)
{
return (0);
}
/* ------------------------------------------------------------------- *
* cf_cmd_read() *
* ------------------------------------------------------------------- *
*
* Read nr_sectors from the device starting from start_sector.
*/
static int cf_cmd_read (uint32_t nr_sectors, uint32_t start_sector, void *buf)
{
unsigned long lba;
uint32_t count;
uint16_t *ptr_16;
uint8_t *ptr_8;
int error;
//#define OCTEON_VISUAL_CF_0 1
#ifdef OCTEON_VISUAL_CF_0
octeon_led_write_char(0, 'R');
#endif
ptr_8 = (uint8_t*)buf;
ptr_16 = (uint16_t*)buf;
lba = start_sector;
while (nr_sectors--) {
error = cf_send_cmd(lba, CMD_READ_SECTOR);
if (error != 0) {
printf("%s: cf_send_cmd(CMD_READ_SECTOR) failed: %d\n", __func__, error);
return (error);
}
if (bus_width == 8) {
volatile uint8_t *task_file = (volatile uint8_t*)base_addr;
volatile uint8_t dummy;
for (count = 0; count < SECTOR_SIZE; count++) {
*ptr_8++ = task_file[TF_DATA];
if ((count & 0xf) == 0) dummy = task_file[TF_STATUS];
}
} else {
volatile uint16_t *task_file = (volatile uint16_t*)base_addr;
volatile uint16_t dummy;
for (count = 0; count < SECTOR_SIZE; count+=2) {
uint16_t temp;
temp = task_file[TF_DATA];
*ptr_16++ = SWAP_SHORT(temp);
if ((count & 0xf) == 0) dummy = task_file[TF_STATUS/2];
}
}
lba ++;
}
#ifdef OCTEON_VISUAL_CF_0
octeon_led_write_char(0, ' ');
#endif
return (0);
}
/* ------------------------------------------------------------------- *
* cf_cmd_write() *
* ------------------------------------------------------------------- *
*
* Write nr_sectors to the device starting from start_sector.
*/
static int cf_cmd_write (uint32_t nr_sectors, uint32_t start_sector, void *buf)
{
uint32_t lba;
uint32_t count;
uint16_t *ptr_16;
uint8_t *ptr_8;
int error;
//#define OCTEON_VISUAL_CF_1 1
#ifdef OCTEON_VISUAL_CF_1
octeon_led_write_char(1, 'W');
#endif
lba = start_sector;
ptr_8 = (uint8_t*)buf;
ptr_16 = (uint16_t*)buf;
while (nr_sectors--) {
error = cf_send_cmd(lba, CMD_WRITE_SECTOR);
if (error != 0) {
printf("%s: cf_send_cmd(CMD_WRITE_SECTOR) failed: %d\n", __func__, error);
return (error);
}
if (bus_width == 8) {
volatile uint8_t *task_file;
volatile uint8_t dummy;
task_file = (volatile uint8_t *) base_addr;
for (count = 0; count < SECTOR_SIZE; count++) {
task_file[TF_DATA] = *ptr_8++;
if ((count & 0xf) == 0) dummy = task_file[TF_STATUS];
}
} else {
volatile uint16_t *task_file;
volatile uint16_t dummy;
task_file = (volatile uint16_t *) base_addr;
for (count = 0; count < SECTOR_SIZE; count+=2) {
uint16_t temp = *ptr_16++;
task_file[TF_DATA] = SWAP_SHORT(temp);
if ((count & 0xf) == 0) dummy = task_file[TF_STATUS/2];
}
}
lba ++;
}
#ifdef OCTEON_VISUAL_CF_1
octeon_led_write_char(1, ' ');
#endif
return (0);
}
/* ------------------------------------------------------------------- *
* cf_cmd_identify() *
* ------------------------------------------------------------------- *
*
* Read parameters and other information from the drive and store
* it in the drive_param structure
*
*/
static int cf_cmd_identify (void)
{
int count;
uint8_t status;
int error;
if (bus_width == 8) {
volatile uint8_t *task_file;
task_file = (volatile uint8_t *) base_addr;
while ((status = task_file[TF_STATUS]) & STATUS_BSY) {
DELAY(WAIT_DELAY);
}
task_file[TF_SECTOR_COUNT] = 0;
task_file[TF_SECTOR_NUMBER] = 0;
task_file[TF_CYL_LSB] = 0;
task_file[TF_CYL_MSB] = 0;
task_file[TF_DRV_HEAD] = 0;
task_file[TF_COMMAND] = CMD_IDENTIFY;
error = cf_wait_busy();
if (error == 0) {
for (count = 0; count < SECTOR_SIZE; count++)
drive_param.u.buf[count] = task_file[TF_DATA];
}
} else {
volatile uint16_t *task_file;
task_file = (volatile uint16_t *) base_addr;
while ((status = (task_file[TF_STATUS/2]>>8)) & STATUS_BSY) {
DELAY(WAIT_DELAY);
}
task_file[TF_SECTOR_COUNT/2] = 0; /* this includes TF_SECTOR_NUMBER */
task_file[TF_CYL_LSB/2] = 0; /* this includes TF_CYL_MSB */
task_file[TF_DRV_HEAD/2] = 0 | (CMD_IDENTIFY<<8); /* this includes TF_COMMAND */
error = cf_wait_busy();
if (error == 0) {
for (count = 0; count < SECTOR_SIZE; count+=2) {
uint16_t temp;
temp = task_file[TF_DATA];
/* endianess will be swapped below */
drive_param.u.buf[count] = (temp & 0xff);
drive_param.u.buf[count+1] = (temp & 0xff00)>>8;
}
}
}
if (error != 0) {
printf("%s: identify failed: %d\n", __func__, error);
return (error);
}
cf_swap_ascii(drive_param.u.driveid.model, drive_param.model);
drive_param.sector_size = 512; //= SWAP_SHORT (drive_param.u.driveid.sector_bytes);
drive_param.heads = SWAP_SHORT (drive_param.u.driveid.current_heads);
drive_param.tracks = SWAP_SHORT (drive_param.u.driveid.current_cylinders);
drive_param.sec_track = SWAP_SHORT (drive_param.u.driveid.current_sectors);
drive_param.nr_sectors = (uint32_t)SWAP_SHORT (drive_param.u.driveid.lba_size_1) |
((uint32_t)SWAP_SHORT (drive_param.u.driveid.lba_size_2));
return (0);
}
/* ------------------------------------------------------------------- *
* cf_send_cmd() *
* ------------------------------------------------------------------- *
*
* Send command to read/write one sector specified by lba.
*
*/
static int cf_send_cmd (uint32_t lba, uint8_t cmd)
{
uint8_t status;
if (bus_width == 8) {
volatile uint8_t *task_file;
task_file = (volatile uint8_t *) base_addr;
while ( (status = task_file[TF_STATUS]) & STATUS_BSY) {
DELAY(WAIT_DELAY);
}
task_file[TF_SECTOR_COUNT] = 1;
task_file[TF_SECTOR_NUMBER] = (lba & 0xff);
task_file[TF_CYL_LSB] = ((lba >> 8) & 0xff);
task_file[TF_CYL_MSB] = ((lba >> 16) & 0xff);
task_file[TF_DRV_HEAD] = ((lba >> 24) & 0xff) | 0xe0;
task_file[TF_COMMAND] = cmd;
} else {
volatile uint16_t *task_file;
task_file = (volatile uint16_t *) base_addr;
while ( (status = (task_file[TF_STATUS/2]>>8)) & STATUS_BSY) {
DELAY(WAIT_DELAY);
}
task_file[TF_SECTOR_COUNT/2] = 1 | ((lba & 0xff) << 8);
task_file[TF_CYL_LSB/2] = ((lba >> 8) & 0xff) | (((lba >> 16) & 0xff) << 8);
task_file[TF_DRV_HEAD/2] = (((lba >> 24) & 0xff) | 0xe0) | (cmd << 8);
}
return (cf_wait_busy());
}
/* ------------------------------------------------------------------- *
* cf_wait_busy() *
* ------------------------------------------------------------------- *
*
* Wait until the drive finishes a given command and data is
* ready to be transferred. This is done by repeatedly checking
* the BSY bit of the status register. When the controller is ready for
* data transfer, it clears the BSY bit and sets the DRQ bit.
*
* If the DF bit is ever set, we return error.
*
* This code originally spun on DRQ. If that behavior turns out to be
* necessary, a flag can be added or this function can be called
* repeatedly as long as it is returning ENXIO.
*/
static int cf_wait_busy (void)
{
uint8_t status;
//#define OCTEON_VISUAL_CF_2 1
#ifdef OCTEON_VISUAL_CF_2
static int where0 = 0;
octeon_led_run_wheel(&where0, 2);
#endif
if (bus_width == 8) {
volatile uint8_t *task_file;
task_file = (volatile uint8_t *)base_addr;
status = task_file[TF_STATUS];
while ((status & STATUS_BSY) == STATUS_BSY) {
if ((status & STATUS_DF) != 0) {
printf("%s: device fault (status=%x)\n", __func__, status);
return (EIO);
}
DELAY(WAIT_DELAY);
status = task_file[TF_STATUS];
}
} else {
volatile uint16_t *task_file;
task_file = (volatile uint16_t *)base_addr;
status = task_file[TF_STATUS/2]>>8;
while ((status & STATUS_BSY) == STATUS_BSY) {
if ((status & STATUS_DF) != 0) {
printf("%s: device fault (status=%x)\n", __func__, status);
return (EIO);
}
DELAY(WAIT_DELAY);
status = (uint8_t)(task_file[TF_STATUS/2]>>8);
}
}
if ((status & STATUS_DRQ) == 0) {
printf("%s: device not ready (status=%x)\n", __func__, status);
return (ENXIO);
}
#ifdef OCTEON_VISUAL_CF_2
octeon_led_write_char(2, ' ');
#endif
return (0);
}
/* ------------------------------------------------------------------- *
* cf_swap_ascii() *
* ------------------------------------------------------------------- *
*
* The ascii string returned by the controller specifying
* the model of the drive is byte-swaped. This routine
* corrects the byte ordering.
*
*/
static void cf_swap_ascii (unsigned char str1[], char str2[])
{
int i;
for(i = 0; i < MODEL_STR_SIZE; i++) {
str2[i] = str1[i^1];
}
}
/* ------------------------------------------------------------------- *
* cf_probe() *
* ------------------------------------------------------------------- */
static int cf_probe (device_t dev)
{
if (octeon_is_simulation()) return 1;
if (device_get_unit(dev) != 0) {
panic("can't attach more devices\n");
}
device_set_desc(dev, "Octeon Compact Flash Driver");
return (cf_cmd_identify());
}
/* ------------------------------------------------------------------- *
* cf_identify() *
* ------------------------------------------------------------------- *
*
* Find the bootbus region for the CF to determine
* 16 or 8 bit and check to see if device is
* inserted.
*
*/
static void cf_identify (driver_t *drv, device_t parent)
{
uint8_t status;
int bus_region;
int count = 0;
cvmx_mio_boot_reg_cfgx_t cfg;
if (octeon_is_simulation())
return;
base_addr = cvmx_phys_to_ptr(octeon_bootinfo->compact_flash_common_base_addr);
for (bus_region = 0; bus_region < 8; bus_region++)
{
cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_REG_CFGX(bus_region));
if (cfg.s.base == octeon_bootinfo->compact_flash_common_base_addr >> 16)
{
bus_width = (cfg.s.width) ? 16: 8;
printf("Compact flash found in bootbus region %d (%d bit).\n", bus_region, bus_width);
break;
}
}
if (bus_width == 8) {
volatile uint8_t *task_file;
task_file = (volatile uint8_t *) base_addr;
/* Check if CF is inserted */
while ( (status = task_file[TF_STATUS]) & STATUS_BSY){
if ((count++) == NR_TRIES ) {
printf("Compact Flash not present\n");
return;
}
DELAY(WAIT_DELAY);
}
} else {
volatile uint16_t *task_file;
task_file = (volatile uint16_t *) base_addr;
/* Check if CF is inserted */
while ( (status = (task_file[TF_STATUS/2]>>8)) & STATUS_BSY){
if ((count++) == NR_TRIES ) {
printf("Compact Flash not present\n");
return;
}
DELAY(WAIT_DELAY);
}
}
BUS_ADD_CHILD(parent, 0, "cf", 0);
}
/* ------------------------------------------------------------------- *
* cf_attach_geom() *
* ------------------------------------------------------------------- */
static int cf_attach_geom (void *arg, int flag)
{
struct cf_priv *cf_priv;
cf_priv = (struct cf_priv *) arg;
cf_priv->cf_geom = g_new_geomf(&g_cf_class, "cf%d", device_get_unit(cf_priv->dev));
cf_priv->cf_provider = g_new_providerf(cf_priv->cf_geom, cf_priv->cf_geom->name);
cf_priv->cf_geom->softc = cf_priv;
g_error_provider(cf_priv->cf_provider, 0);
return (0);
}
/* ------------------------------------------------------------------- *
* cf_attach_geom() *
* ------------------------------------------------------------------- */
static void cf_attach_geom_proxy (void *arg, int flag)
{
cf_attach_geom(arg, flag);
}
/* ------------------------------------------------------------------- *
* cf_attach() *
* ------------------------------------------------------------------- */
static int cf_attach (device_t dev)
{
struct cf_priv *cf_priv;
if (octeon_is_simulation()) return 1;
cf_priv = device_get_softc(dev);
cf_priv->dev = dev;
cf_priv->drive_param = &drive_param;
g_post_event(cf_attach_geom_proxy, cf_priv, M_WAITOK, NULL);
bioq_init(&cf_priv->cf_bq);
return 0;
}
static device_method_t cf_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, cf_probe),
DEVMETHOD(device_identify, cf_identify),
DEVMETHOD(device_attach, cf_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static driver_t cf_driver = {
"cf",
cf_methods,
sizeof(struct cf_priv)
};
static devclass_t cf_devclass;
DRIVER_MODULE(cf, nexus, cf_driver, cf_devclass, 0, 0);
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