Rev 2131 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 2131 | Rev 2456 | ||
|---|---|---|---|
| Line 50... | Line 50... | ||
| 50 | #include <console/chardev.h> |
50 | #include <console/chardev.h> |
| 51 | #include <console/console.h> |
51 | #include <console/console.h> |
| 52 | #include <interrupt.h> |
52 | #include <interrupt.h> |
| 53 | #include <sysinfo/sysinfo.h> |
53 | #include <sysinfo/sysinfo.h> |
| 54 | #include <print.h> |
54 | #include <print.h> |
| - | 55 | #include <synch/rcu.h> |
|
| 55 | 56 | ||
| 56 | /* |
57 | /* |
| 57 | * These codes read from z8530 data register are silently ignored. |
58 | * These codes read from z8530 data register are silently ignored. |
| 58 | */ |
59 | */ |
| 59 | #define IGNORE_CODE 0x7f /* all keys up */ |
60 | #define IGNORE_CODE 0x7f /* all keys up */ |
| Line 88... | Line 89... | ||
| 88 | /* 8 bits per character and enable receiver */ |
89 | /* 8 bits per character and enable receiver */ |
| 89 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
90 | z8530_write_a(&z8530, WR3, WR3_RX8BITSCH | WR3_RX_ENABLE); |
| 90 | 91 | ||
| 91 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
92 | z8530_write_a(&z8530, WR9, WR9_MIE); /* Master Interrupt Enable. */ |
| 92 | 93 | ||
| 93 | spinlock_lock(&z8530_irq.lock); |
94 | //rcu_read_lock() is not needed, ints are disabled |
| 94 | z8530_irq.notif_cfg.notify = false; |
95 | //rcu: atomic update doesn't need reallocation |
| 95 | spinlock_unlock(&z8530_irq.lock); |
96 | rcu_dereference_pointer(z8530_irq.notif_cfg).notify = false; |
| 96 | interrupts_restore(ipl); |
97 | interrupts_restore(ipl); |
| 97 | } |
98 | } |
| 98 | 99 | ||
| 99 | /** Resume the former IPC notification behavior. */ |
100 | /** Resume the former IPC notification behavior. */ |
| 100 | void z8530_release(void) |
101 | void z8530_release(void) |
| 101 | { |
102 | { |
| 102 | ipl_t ipl = interrupts_disable(); |
103 | ipl_t ipl = interrupts_disable(); |
| - | 104 | //rcu: atomic update doesn't need reallocation |
|
| 103 | spinlock_lock(&z8530_irq.lock); |
105 | spinlock_lock(&z8530_irq.lock); |
| 104 | if (z8530_irq.notif_cfg.answerbox) |
106 | if (rcu_dereference_pointer(z8530_irq.notif_cfg).answerbox) |
| 105 | z8530_irq.notif_cfg.notify = true; |
107 | rcu_dereference_pointer(z8530_irq.notif_cfg).notify = true; |
| 106 | spinlock_unlock(&z8530_irq.lock); |
108 | spinlock_unlock(&z8530_irq.lock); |
| 107 | interrupts_restore(ipl); |
109 | interrupts_restore(ipl); |
| 108 | } |
110 | } |
| 109 | 111 | ||
| 110 | /** Initialize z8530. */ |
112 | /** Initialize z8530. */ |
| Line 202... | Line 204... | ||
| 202 | * Since we don't have enough documentation about the FHC |
204 | * Since we don't have enough documentation about the FHC |
| 203 | * and because the interrupt looks like level sensitive, |
205 | * and because the interrupt looks like level sensitive, |
| 204 | * we cannot handle it by scheduling one of the level |
206 | * we cannot handle it by scheduling one of the level |
| 205 | * interrupt traps. Process the interrupt directly. |
207 | * interrupt traps. Process the interrupt directly. |
| 206 | */ |
208 | */ |
| 207 | if (irq->notif_cfg.notify && irq->notif_cfg.answerbox) |
209 | if (rcu_dereference_pointer(irq->notif_cfg).notify && rcu_dereference_pointer(irq->notif_cfg).answerbox) |
| 208 | ipc_irq_send_notif(irq); |
210 | ipc_irq_send_notif(irq); |
| 209 | else |
211 | else |
| 210 | z8530_interrupt(); |
212 | z8530_interrupt(); |
| 211 | fhc_clear_interrupt(central_fhc, irq->inr); |
213 | fhc_clear_interrupt(central_fhc, irq->inr); |
| 212 | } |
214 | } |