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freebsd-nq/sys/mips/cavium/octeon_machdep.c

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/*-
* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/imgact.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/cons.h>
#include <sys/exec.h>
#include <sys/ucontext.h>
#include <sys/proc.h>
#include <sys/kdb.h>
#include <sys/ptrace.h>
#include <sys/reboot.h>
#include <sys/signalvar.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/time.h>
#include <sys/timetc.h>
#include <sys/user.h>
#include <vm/vm.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_pager.h>
#include <machine/atomic.h>
#include <machine/cache.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/cpuregs.h>
#include <machine/cpufunc.h>
#include <mips/cavium/octeon_pcmap_regs.h>
#include <machine/hwfunc.h>
#include <machine/intr_machdep.h>
#include <machine/locore.h>
#include <machine/md_var.h>
#include <machine/pcpu.h>
#include <machine/pte.h>
#include <machine/trap.h>
#include <machine/vmparam.h>
#include <contrib/octeon-sdk/cvmx.h>
#include <contrib/octeon-sdk/cvmx-bootmem.h>
#include <contrib/octeon-sdk/cvmx-interrupt.h>
#include <contrib/octeon-sdk/cvmx-version.h>
#if defined(__mips_n64)
#define MAX_APP_DESC_ADDR 0xffffffffafffffff
#else
#define MAX_APP_DESC_ADDR 0xafffffff
#endif
#define OCTEON_CLOCK_DEFAULT (500 * 1000 * 1000)
struct octeon_feature_description {
octeon_feature_t ofd_feature;
const char *ofd_string;
};
extern int *edata;
extern int *end;
extern char cpu_model[];
extern char cpu_board[];
static const struct octeon_feature_description octeon_feature_descriptions[] = {
{ OCTEON_FEATURE_SAAD, "SAAD" },
{ OCTEON_FEATURE_ZIP, "ZIP" },
{ OCTEON_FEATURE_CRYPTO, "CRYPTO" },
{ OCTEON_FEATURE_DORM_CRYPTO, "DORM_CRYPTO" },
{ OCTEON_FEATURE_PCIE, "PCIE" },
{ OCTEON_FEATURE_SRIO, "SRIO" },
{ OCTEON_FEATURE_KEY_MEMORY, "KEY_MEMORY" },
{ OCTEON_FEATURE_LED_CONTROLLER, "LED_CONTROLLER" },
{ OCTEON_FEATURE_TRA, "TRA" },
{ OCTEON_FEATURE_MGMT_PORT, "MGMT_PORT" },
{ OCTEON_FEATURE_RAID, "RAID" },
{ OCTEON_FEATURE_USB, "USB" },
{ OCTEON_FEATURE_NO_WPTR, "NO_WPTR" },
{ OCTEON_FEATURE_DFA, "DFA" },
{ OCTEON_FEATURE_MDIO_CLAUSE_45, "MDIO_CLAUSE_45" },
{ OCTEON_FEATURE_NPEI, "NPEI" },
{ 0, NULL }
};
uint64_t ciu_get_en_reg_addr_new(int corenum, int intx, int enx, int ciu_ip);
void ciu_dump_interrutps_enabled(int core_num, int intx, int enx, int ciu_ip);
static uint64_t octeon_get_ticks(void);
static unsigned octeon_get_timecount(struct timecounter *tc);
static void octeon_boot_params_init(register_t ptr);
static struct timecounter octeon_timecounter = {
octeon_get_timecount, /* get_timecount */
0, /* no poll_pps */
0xffffffffu, /* octeon_mask */
0, /* frequency */
"Octeon", /* name */
900, /* quality (adjusted in code) */
};
void
platform_cpu_init()
{
/* Nothing special yet */
}
/*
* Perform a board-level soft-reset.
*/
void
platform_reset(void)
{
cvmx_write_csr(CVMX_CIU_SOFT_RST, 1);
}
void
octeon_led_write_char(int char_position, char val)
{
uint64_t ptr = (OCTEON_CHAR_LED_BASE_ADDR | 0xf8);
if (octeon_is_simulation())
return;
char_position &= 0x7; /* only 8 chars */
ptr += char_position;
oct_write8_x8(ptr, val);
}
void
octeon_led_write_char0(char val)
{
uint64_t ptr = (OCTEON_CHAR_LED_BASE_ADDR | 0xf8);
if (octeon_is_simulation())
return;
oct_write8_x8(ptr, val);
}
void
octeon_led_write_hexchar(int char_position, char hexval)
{
uint64_t ptr = (OCTEON_CHAR_LED_BASE_ADDR | 0xf8);
char char1, char2;
if (octeon_is_simulation())
return;
char1 = (hexval >> 4) & 0x0f; char1 = (char1 < 10)?char1+'0':char1+'7';
char2 = (hexval & 0x0f); char2 = (char2 < 10)?char2+'0':char2+'7';
char_position &= 0x7; /* only 8 chars */
if (char_position > 6)
char_position = 6;
ptr += char_position;
oct_write8_x8(ptr, char1);
ptr++;
oct_write8_x8(ptr, char2);
}
void
octeon_led_write_string(const char *str)
{
uint64_t ptr = (OCTEON_CHAR_LED_BASE_ADDR | 0xf8);
int i;
if (octeon_is_simulation())
return;
for (i=0; i<8; i++, ptr++) {
if (str && *str)
oct_write8_x8(ptr, *str++);
else
oct_write8_x8(ptr, ' ');
(void)cvmx_read_csr(CVMX_MIO_BOOT_BIST_STAT);
}
}
static char progress[8] = { '-', '/', '|', '\\', '-', '/', '|', '\\'};
void
octeon_led_run_wheel(int *prog_count, int led_position)
{
if (octeon_is_simulation())
return;
octeon_led_write_char(led_position, progress[*prog_count]);
*prog_count += 1;
*prog_count &= 0x7;
}
void
octeon_led_write_hex(uint32_t wl)
{
char nbuf[80];
sprintf(nbuf, "%X", wl);
octeon_led_write_string(nbuf);
}
/*
* octeon_debug_symbol
*
* Does nothing.
* Used to mark the point for simulator to begin tracing
*/
void
octeon_debug_symbol(void)
{
}
/*
* octeon_ciu_reset
*
* Shutdown all CIU to IP2, IP3 mappings
*/
void
octeon_ciu_reset(void)
{
/* Disable all CIU interrupts by default */
cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num()*2), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num()*2+1), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num()*2), 0);
cvmx_write_csr(CVMX_CIU_INTX_EN1(cvmx_get_core_num()*2+1), 0);
#ifdef SMP
/* Enable the MBOX interrupts. */
cvmx_write_csr(CVMX_CIU_INTX_EN0(cvmx_get_core_num()*2+1),
(1ull << (CVMX_IRQ_MBOX0 - 8)) |
(1ull << (CVMX_IRQ_MBOX1 - 8)));
#endif
}
static void
octeon_memory_init(void)
{
vm_paddr_t phys_end;
int64_t addr;
unsigned i, j;
phys_end = round_page(MIPS_KSEG0_TO_PHYS((vm_offset_t)&end));
if (octeon_is_simulation()) {
/* Simulator we limit to 96 meg */
phys_avail[0] = phys_end;
phys_avail[1] = 96 << 20;
dump_avail[0] = phys_avail[0];
dump_avail[1] = phys_avail[1];
realmem = physmem = btoc(phys_avail[1] - phys_avail[0]);
return;
}
/*
* Allocate memory from bootmem 1MB at a time and merge
* adjacent entries.
*/
i = 0;
while (i < PHYS_AVAIL_ENTRIES) {
/*
* If there is less than 2MB of memory available in 128-byte
* blocks, do not steal any more memory. We need to leave some
* memory for the command queues to be allocated out of.
*/
if (cvmx_bootmem_available_mem(128) < 2 << 20)
break;
addr = cvmx_bootmem_phy_alloc(1 << 20, phys_end,
~(vm_paddr_t)0, PAGE_SIZE, 0);
if (addr == -1)
break;
/*
* The SDK needs to be able to easily map any memory that might
* come to it e.g. in the form of an mbuf. Because on !n64 we
* can't direct-map some addresses and we don't want to manage
* temporary mappings within the SDK, don't feed memory that
* can't be direct-mapped to the kernel.
*/
#if !defined(__mips_n64)
if (!MIPS_DIRECT_MAPPABLE(addr + (1 << 20) - 1))
continue;
#endif
physmem += btoc(1 << 20);
if (i > 0 && phys_avail[i - 1] == addr) {
phys_avail[i - 1] += 1 << 20;
continue;
}
phys_avail[i + 0] = addr;
phys_avail[i + 1] = addr + (1 << 20);
i += 2;
}
for (j = 0; j < i; j++)
dump_avail[j] = phys_avail[j];
realmem = physmem;
}
void
platform_start(__register_t a0, __register_t a1, __register_t a2 __unused,
__register_t a3)
{
const struct octeon_feature_description *ofd;
uint64_t platform_counter_freq;
/*
* XXX
* octeon_boot_params_init() should be called before anything else,
* certainly before any output; we may find out from the boot
* descriptor's flags that we're supposed to use the PCI or UART1
* consoles rather than UART0. No point doing that reorganization
* until we actually intercept UART_DEV_CONSOLE for the UART1 case
* and somehow handle the PCI console, which we lack code for
* entirely.
*/
/* Initialize pcpu stuff */
mips_pcpu0_init();
mips_timer_early_init(OCTEON_CLOCK_DEFAULT);
cninit();
octeon_ciu_reset();
octeon_boot_params_init(a3);
/*
* XXX
* We can certainly parse command line arguments or U-Boot environment
* to determine whether to bootverbose / single user / ... I think
* stass has patches to add support for loader things to U-Boot even.
*/
bootverbose = 1;
/*
* For some reason on the cn38xx simulator ebase register is set to
* 0x80001000 at bootup time. Move it back to the default, but
* when we move to having support for multiple executives, we need
* to rethink this.
*/
mips_wr_ebase(0x80000000);
octeon_memory_init();
init_param1();
init_param2(physmem);
mips_cpu_init();
pmap_bootstrap();
mips_proc0_init();
mutex_init();
kdb_init();
#ifdef KDB
if (boothowto & RB_KDB)
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
#endif
cpu_clock = cvmx_sysinfo_get()->cpu_clock_hz;
platform_counter_freq = cpu_clock;
octeon_timecounter.tc_frequency = cpu_clock;
platform_timecounter = &octeon_timecounter;
mips_timer_init_params(platform_counter_freq, 0);
set_cputicker(octeon_get_ticks, cpu_clock, 0);
#ifdef SMP
/*
* Clear any pending IPIs.
*/
cvmx_write_csr(CVMX_CIU_MBOX_CLRX(0), 0xffffffff);
#endif
printf("Octeon SDK: %s\n", OCTEON_SDK_VERSION_STRING);
printf("Available Octeon features:");
for (ofd = octeon_feature_descriptions; ofd->ofd_string != NULL; ofd++)
if (octeon_has_feature(ofd->ofd_feature))
printf(" %s", ofd->ofd_string);
printf("\n");
}
static uint64_t
octeon_get_ticks(void)
{
uint64_t cvmcount;
CVMX_MF_CYCLE(cvmcount);
return (cvmcount);
}
static unsigned
octeon_get_timecount(struct timecounter *tc)
{
return ((unsigned)octeon_get_ticks());
}
/**
* version of printf that works better in exception context.
*
* @param format
*
* XXX If this function weren't in cvmx-interrupt.c, we'd use the SDK version.
*/
void cvmx_safe_printf(const char *format, ...)
{
char buffer[256];
char *ptr = buffer;
int count;
va_list args;
va_start(args, format);
#ifndef __U_BOOT__
count = vsnprintf(buffer, sizeof(buffer), format, args);
#else
count = vsprintf(buffer, format, args);
#endif
va_end(args);
while (count-- > 0)
{
cvmx_uart_lsr_t lsrval;
/* Spin until there is room */
do
{
lsrval.u64 = cvmx_read_csr(CVMX_MIO_UARTX_LSR(0));
#if !defined(CONFIG_OCTEON_SIM_SPEED)
if (lsrval.s.temt == 0)
cvmx_wait(10000); /* Just to reduce the load on the system */
#endif
}
while (lsrval.s.temt == 0);
if (*ptr == '\n')
cvmx_write_csr(CVMX_MIO_UARTX_THR(0), '\r');
cvmx_write_csr(CVMX_MIO_UARTX_THR(0), *ptr++);
}
}
/* impSTART: This stuff should move back into the Cavium SDK */
/*
****************************************************************************************
*
* APP/BOOT DESCRIPTOR STUFF
*
****************************************************************************************
*/
/* Define the struct that is initialized by the bootloader used by the
* startup code.
*
* Copyright (c) 2004, 2005, 2006 Cavium Networks.
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#define OCTEON_CURRENT_DESC_VERSION 6
#define OCTEON_ARGV_MAX_ARGS (64)
#define OCTOEN_SERIAL_LEN 20
typedef struct {
/* Start of block referenced by assembly code - do not change! */
uint32_t desc_version;
uint32_t desc_size;
uint64_t stack_top;
uint64_t heap_base;
uint64_t heap_end;
uint64_t entry_point; /* Only used by bootloader */
uint64_t desc_vaddr;
/* End of This block referenced by assembly code - do not change! */
uint32_t exception_base_addr;
uint32_t stack_size;
uint32_t heap_size;
uint32_t argc; /* Argc count for application */
uint32_t argv[OCTEON_ARGV_MAX_ARGS];
uint32_t flags;
uint32_t core_mask;
uint32_t dram_size; /**< DRAM size in megabyes */
uint32_t phy_mem_desc_addr; /**< physical address of free memory descriptor block*/
uint32_t debugger_flags_base_addr; /**< used to pass flags from app to debugger */
uint32_t eclock_hz; /**< CPU clock speed, in hz */
uint32_t dclock_hz; /**< DRAM clock speed, in hz */
uint32_t spi_clock_hz; /**< SPI4 clock in hz */
uint16_t board_type;
uint8_t board_rev_major;
uint8_t board_rev_minor;
uint16_t chip_type;
uint8_t chip_rev_major;
uint8_t chip_rev_minor;
char board_serial_number[OCTOEN_SERIAL_LEN];
uint8_t mac_addr_base[6];
uint8_t mac_addr_count;
uint64_t cvmx_desc_vaddr;
} octeon_boot_descriptor_t;
cvmx_bootinfo_t *octeon_bootinfo;
static octeon_boot_descriptor_t *app_desc_ptr;
int
octeon_is_simulation(void)
{
switch (cvmx_sysinfo_get()->board_type) {
case CVMX_BOARD_TYPE_SIM:
return 1;
default:
return 0;
}
}
static void
octeon_process_app_desc_ver_6(void)
{
/* XXX Why is 0x00000000ffffffffULL a bad value? */
if (app_desc_ptr->cvmx_desc_vaddr == 0 ||
app_desc_ptr->cvmx_desc_vaddr == 0xfffffffful)
panic("Bad octeon_bootinfo %p", octeon_bootinfo);
octeon_bootinfo =
(cvmx_bootinfo_t *)(intptr_t)app_desc_ptr->cvmx_desc_vaddr;
octeon_bootinfo =
(cvmx_bootinfo_t *) ((intptr_t)octeon_bootinfo | MIPS_KSEG0_START);
if (octeon_bootinfo->major_version != 1)
panic("Incompatible CVMX descriptor from bootloader: %d.%d %p",
(int) octeon_bootinfo->major_version,
(int) octeon_bootinfo->minor_version, octeon_bootinfo);
cvmx_sysinfo_minimal_initialize(octeon_bootinfo->phy_mem_desc_addr,
octeon_bootinfo->board_type,
octeon_bootinfo->board_rev_major,
octeon_bootinfo->board_rev_minor,
octeon_bootinfo->eclock_hz);
memcpy(cvmx_sysinfo_get()->mac_addr_base, octeon_bootinfo->mac_addr_base, 6);
cvmx_sysinfo_get()->mac_addr_count = octeon_bootinfo->mac_addr_count;
cvmx_sysinfo_get()->compact_flash_common_base_addr =
octeon_bootinfo->compact_flash_common_base_addr;
cvmx_sysinfo_get()->compact_flash_attribute_base_addr =
octeon_bootinfo->compact_flash_attribute_base_addr;
}
static void
octeon_boot_params_init(register_t ptr)
{
if (ptr == 0 || ptr >= MAX_APP_DESC_ADDR)
panic("app descriptor passed at invalid address %#jx",
(uintmax_t)ptr);
app_desc_ptr = (octeon_boot_descriptor_t *)(intptr_t)ptr;
if (app_desc_ptr->desc_version < 6)
panic("Your boot code is too old to be supported.");
octeon_process_app_desc_ver_6();
KASSERT(octeon_bootinfo != NULL, ("octeon_bootinfo should be set"));
if (cvmx_sysinfo_get()->phy_mem_desc_addr == (uint64_t)0)
panic("Your boot loader did not supply a memory descriptor.");
cvmx_bootmem_init(cvmx_sysinfo_get()->phy_mem_desc_addr);
printf("Boot Descriptor Ver: %u -> %u/%u",
app_desc_ptr->desc_version, octeon_bootinfo->major_version,
octeon_bootinfo->minor_version);
printf(" CPU clock: %uMHz Core Mask: %#x\n",
cvmx_sysinfo_get()->cpu_clock_hz / 1000000,
cvmx_sysinfo_get()->core_mask);
printf(" Board Type: %u Revision: %u/%u\n",
cvmx_sysinfo_get()->board_type,
cvmx_sysinfo_get()->board_rev_major,
cvmx_sysinfo_get()->board_rev_minor);
printf(" Mac Address %02X.%02X.%02X.%02X.%02X.%02X (%d)\n",
octeon_bootinfo->mac_addr_base[0],
octeon_bootinfo->mac_addr_base[1],
octeon_bootinfo->mac_addr_base[2],
octeon_bootinfo->mac_addr_base[3],
octeon_bootinfo->mac_addr_base[4],
octeon_bootinfo->mac_addr_base[5],
octeon_bootinfo->mac_addr_count);
#if defined(OCTEON_BOARD_CAPK_0100ND)
strcpy(cpu_board, "CAPK-0100ND");
if (cvmx_sysinfo_get()->board_type != CVMX_BOARD_TYPE_CN3010_EVB_HS5) {
printf("Compiled for CAPK-0100ND, but board type is %s\n",
cvmx_board_type_to_string(cvmx_sysinfo_get()->board_type));
strcat(cpu_board, " hardwired, but type is ");
strcat(cpu_board,
cvmx_board_type_to_string(cvmx_sysinfo_get()->board_type));
}
#else
strcpy(cpu_board,
cvmx_board_type_to_string(cvmx_sysinfo_get()->board_type));
printf("Board: %s\n", cpu_board);
#endif
strcpy(cpu_model, octeon_model_get_string(cvmx_get_proc_id()));
printf("Model: %s\n", cpu_model);
}
/* impEND: This stuff should move back into the Cavium SDK */
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