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  1. /*
  2.  * Copyright (c) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup ia64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch.h>
  36. #include <arch/ski/ski.h>
  37. #include <arch/drivers/it.h>
  38. #include <arch/interrupt.h>
  39. #include <arch/barrier.h>
  40. #include <arch/asm.h>
  41. #include <arch/register.h>
  42. #include <arch/types.h>
  43. #include <arch/context.h>
  44. #include <arch/stack.h>
  45. #include <arch/mm/page.h>
  46. #include <mm/as.h>
  47. #include <config.h>
  48. #include <userspace.h>
  49. #include <console/console.h>
  50. #include <proc/uarg.h>
  51. #include <syscall/syscall.h>
  52. #include <ddi/irq.h>
  53. #include <ddi/device.h>
  54. #include <arch/bootinfo.h>
  55. #include <arch/drivers/ega.h>
  56. #include <genarch/drivers/ega/ega.h>
  57. #include <genarch/kbd/i8042.h>
  58. #include <genarch/kbd/ns16550.h>
  59. #include <smp/smp.h>
  60. #include <smp/ipi.h>
  61. #include <arch/atomic.h>
  62. #include <panic.h>
  63. #include <print.h>
  64. #include <sysinfo/sysinfo.h>
  65.  
  66. /* NS16550 as a COM 1 */
  67. #define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
  68. #define NS16550_PORT    0x3f8
  69.  
  70. bootinfo_t *bootinfo;
  71.  
  72. static uint64_t iosapic_base = 0xfec00000;
  73.  
  74. void arch_pre_main(void)
  75. {
  76.     /* Setup usermode init tasks. */
  77.  
  78.     unsigned int i;
  79.    
  80.     init.cnt = bootinfo->taskmap.count;
  81.    
  82.     for (i = 0; i < init.cnt; i++) {
  83.         init.tasks[i].addr =
  84.             ((unsigned long) bootinfo->taskmap.tasks[i].addr) |
  85.             VRN_MASK;
  86.         init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
  87.     }
  88. }
  89.  
  90. void arch_pre_mm_init(void)
  91. {
  92.     /*
  93.      * Set Interruption Vector Address (i.e. location of interruption vector
  94.      * table).
  95.      */
  96.     iva_write((uintptr_t) &ivt);
  97.     srlz_d();
  98.    
  99. }
  100.  
  101. static void iosapic_init(void)
  102. {
  103.     uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
  104.     int i;
  105.    
  106.     int myid, myeid;
  107.    
  108.     myid = ia64_get_cpu_id();
  109.     myeid = ia64_get_cpu_eid();
  110.  
  111.     for (i = 0; i < 16; i++) {
  112.         if (i == 2)
  113.             continue;    /* Disable Cascade interrupt */
  114.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
  115.         srlz_d();
  116.         ((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
  117.         srlz_d();
  118.         ((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
  119.         srlz_d();
  120.         ((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
  121.             myeid << (48 - 32);
  122.         srlz_d();
  123.     }
  124.  
  125. }
  126.  
  127.  
  128. void arch_post_mm_init(void)
  129. {
  130.     if (config.cpu_active == 1) {
  131.         iosapic_init();
  132.         irq_init(INR_COUNT, INR_COUNT);
  133. #ifdef SKI
  134.         ski_init_console();
  135. #else
  136.         ega_init(EGA_BASE, EGA_VIDEORAM);
  137. #endif
  138.     }
  139.     it_init();
  140.        
  141. }
  142.  
  143. void arch_post_cpu_init(void)
  144. {
  145. }
  146.  
  147. void arch_pre_smp_init(void)
  148. {
  149. }
  150.  
  151.  
  152. #ifdef I460GX
  153. #define POLL_INTERVAL       50000       /* 50 ms */
  154. /** Kernel thread for polling keyboard. */
  155. static void i8042_kkbdpoll(void *arg)
  156. {
  157.     while (1) {
  158. #ifdef CONFIG_NS16550
  159.     #ifndef CONFIG_NS16550_INTERRUPT_DRIVEN
  160.         ns16550_poll();
  161.     #endif 
  162. #else
  163.     #ifndef CONFIG_I8042_INTERRUPT_DRIVEN
  164.         i8042_poll();
  165.     #endif 
  166. #endif
  167.         thread_usleep(POLL_INTERVAL);
  168.     }
  169. }
  170. #endif
  171.  
  172. void arch_post_smp_init(void)
  173. {
  174.     thread_t *t;
  175.  
  176.     /*
  177.      * Create thread that polls keyboard.
  178.      */
  179. #ifdef SKI
  180.     t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  181.     if (!t)
  182.         panic("Cannot create kkbdpoll.");
  183.     thread_ready(t);
  184. #endif     
  185.  
  186. #ifdef I460GX
  187.     devno_t kbd = device_assign_devno();
  188.  
  189. #ifdef CONFIG_NS16550
  190.     ns16550_init(kbd, NS16550_PORT, NS16550_IRQ, NULL, NULL);
  191. #else
  192.     devno_t mouse = device_assign_devno();
  193.     i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
  194. #endif
  195.     t = thread_create(i8042_kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  196.     if (!t)
  197.         panic("Cannot create kkbdpoll.");
  198.     thread_ready(t);
  199. #endif
  200.  
  201.     sysinfo_set_item_val("ia64_iospace", NULL, true);
  202.     sysinfo_set_item_val("ia64_iospace.address", NULL, true);
  203.     sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
  204. }
  205.  
  206.  
  207. /** Enter userspace and never return. */
  208. void userspace(uspace_arg_t *kernel_uarg)
  209. {
  210.     psr_t psr;
  211.     rsc_t rsc;
  212.  
  213.     psr.value = psr_read();
  214.     psr.cpl = PL_USER;
  215.     psr.i = true;           /* start with interrupts enabled */
  216.     psr.ic = true;
  217.     psr.ri = 0;         /* start with instruction #0 */
  218.     psr.bn = 1;         /* start in bank 0 */
  219.  
  220.     asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
  221.     rsc.loadrs = 0;
  222.     rsc.be = false;
  223.     rsc.pl = PL_USER;
  224.     rsc.mode = 3;           /* eager mode */
  225.  
  226.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  227.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
  228.         ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
  229.         ((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
  230.         (uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
  231.  
  232.     while (1)
  233.         ;
  234. }
  235.  
  236. /** Set thread-local-storage pointer.
  237.  *
  238.  * We use r13 (a.k.a. tp) for this purpose.
  239.  */
  240. unative_t sys_tls_set(unative_t addr)
  241. {
  242.         return 0;
  243. }
  244.  
  245. /** Acquire console back for kernel
  246.  *
  247.  */
  248. void arch_grab_console(void)
  249. {
  250. #ifdef SKI
  251.     ski_kbd_grab();
  252. #else
  253. #ifdef CONFIG_NS16550
  254.     ns16550_grab();
  255. #else
  256.     i8042_grab();
  257. #endif
  258. #endif
  259. }
  260.  
  261. /** Return console to userspace
  262.  *
  263.  */
  264. void arch_release_console(void)
  265. {
  266. #ifdef SKI
  267.     ski_kbd_release();
  268. #else
  269. #ifdef CONFIG_NS16550
  270.     ns16550_release();
  271. #else
  272.     i8042_release();
  273. #endif
  274. #endif
  275. }
  276.  
  277. void arch_reboot(void)
  278. {
  279.     outb(0x64, 0xfe);
  280.     while (1)
  281.         ;
  282. }
  283.  
  284. /** Construct function pointer
  285.  *
  286.  * @param fptr   function pointer structure
  287.  * @param addr   function address
  288.  * @param caller calling function address
  289.  *
  290.  * @return address of the function pointer
  291.  *
  292.  */
  293. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  294. {
  295.     fptr->fnc = (unative_t) addr;
  296.     fptr->gp = ((unative_t *) caller)[1];
  297.    
  298.     return (void *) fptr;
  299. }
  300.  
  301. /** @}
  302.  */
  303.