41 #define ESB_CONFIG_REG  0x60            /* Config register                   */
42 #define ESB_LOCK_REG    0x68            /* WDT lock register                 */
45 #define ESB_TIMER1_REG  0x00            /* Timer1 value after each reset     */
46 #define ESB_TIMER2_REG  0x04            /* Timer2 value after each reset     */
47 #define ESB_GINTSR_REG  0x08            /* General Interrupt Status Register */
48 #define ESB_RELOAD_REG  0x0c            /* Reload register                   */
51 #define ESB_WDT_FUNC    (0x01 << 2)   /* Watchdog functionality            */
52 #define ESB_WDT_ENABLE  (0x01 << 1)   /* Enable WDT                        */
53 #define ESB_WDT_LOCK    (0x01 << 0)   /* Lock (nowayout)                   */
56 #define ESB_WDT_REBOOT  (0x01 << 5)   /* Enable reboot on timeout          */
57 #define ESB_WDT_FREQ    (0x01 << 2)   /* Decrement frequency               */
58 #define ESB_WDT_INTTYPE (0x11 << 0)   /* Interrupt type on timer1 timeout  */
61 #define ESB_WDT_RELOAD  (0x01 << 8)    /* prevent timeout                   */
64 #define ESB_UNLOCK1     0x80            /* Step 1 to unlock reset registers  */
65 #define ESB_UNLOCK2     0x86            /* Step 2 to unlock reset registers  */
77 #define CLOCK_SCALE_1KHZ 0
81 #define INT_TYPE_IRQ 0          /* APIC 1, INT 10 */
95     int unlock_state;           /* Guest writes 0x80, 0x86 to unlock the
97                                  * states 0 -> 1 -> 2 when this happens.
162     d->free_run = 0;  in i6300esb_reset()
163     d->locked = 0;  in i6300esb_reset()
164     d->enabled = 0;  in i6300esb_reset()
165     d->timer1_preload = 0xfffff;  in i6300esb_reset()
166     d->timer2_preload = 0xfffff;  in i6300esb_reset()
168     d->unlock_state = 0;  in i6300esb_reset()
220         d->reboot_enabled = (data & ESB_WDT_REBOOT) == 0;  in i6300esb_config_write()
222             (data & ESB_WDT_FREQ) != 0 ? CLOCK_SCALE_1MHZ : CLOCK_SCALE_1KHZ;  in i6300esb_config_write()
226             d->locked = (data & ESB_WDT_LOCK) != 0;  in i6300esb_config_write()
227             d->free_run = (data & ESB_WDT_FUNC) != 0;  in i6300esb_config_write()
229             d->enabled = (data & ESB_WDT_ENABLE) != 0;  in i6300esb_config_write()
230             if (!old && d->enabled) /* Enabled transitioned from 0 -> 1 */  in i6300esb_config_write()
249             (d->reboot_enabled ? 0 : ESB_WDT_REBOOT) |  in i6300esb_config_read()
250             (d->clock_scale == CLOCK_SCALE_1MHZ ? ESB_WDT_FREQ : 0) |  in i6300esb_config_read()
255             (d->free_run ? ESB_WDT_FUNC : 0) |  in i6300esb_config_read()
256             (d->locked ? ESB_WDT_LOCK : 0) |  in i6300esb_config_read()
257             (d->enabled ? ESB_WDT_ENABLE : 0);  in i6300esb_config_read()
268     return 0;  in i6300esb_mem_readb()
273     uint32_t data = 0;  in i6300esb_mem_readw()
278     if (addr == 0xc) {  in i6300esb_mem_readw()
283         data = d->previous_reboot_flag ? 0x1200 : 0;  in i6300esb_mem_readw()
293     return 0;  in i6300esb_mem_readl()
302     if (addr == 0xc && val == 0x80)  in i6300esb_mem_writeb()
304     else if (addr == 0xc && val == 0x86 && d->unlock_state == 1)  in i6300esb_mem_writeb()
314     if (addr == 0xc && val == 0x80)  in i6300esb_mem_writew()
316     else if (addr == 0xc && val == 0x86 && d->unlock_state == 1)  in i6300esb_mem_writew()
320             if (addr == 0xc) {  in i6300esb_mem_writew()
321                 if ((val & 0x100) != 0)  in i6300esb_mem_writew()
331                 if ((val & 0x200) != 0 || (val & 0x1000) != 0) {  in i6300esb_mem_writew()
332                     d->previous_reboot_flag = 0;  in i6300esb_mem_writew()
336             d->unlock_state = 0;  in i6300esb_mem_writew()
347     if (addr == 0xc && val == 0x80)  in i6300esb_mem_writel()
349     else if (addr == 0xc && val == 0x86 && d->unlock_state == 1)  in i6300esb_mem_writel()
353             if (addr == 0)  in i6300esb_mem_writel()
354                 d->timer1_preload = val & 0xfffff;  in i6300esb_mem_writel()
356                 d->timer2_preload = val & 0xfffff;  in i6300esb_mem_writel()
358             d->unlock_state = 0;  in i6300esb_mem_writel()
446     d->previous_reboot_flag = 0;  in i6300esb_realize()
449                           "i6300esb", 0x10);  in i6300esb_realize()
450     pci_register_bar(&d->dev, 0, 0, &d->io_mem);  in i6300esb_realize()