12 #include "ipa.h"
19  * DOC:  The IPA embedded microcontroller
21  * The IPA incorporates a microcontroller that is able to do some additional
31  * A 128 byte block of structured memory within the IPA SRAM is used together
33  * AP and the IPA microcontroller.  Each side writes data to the shared area
66  * A shared memory area at the base of IPA resident memory is used for
120 static struct ipa_uc_mem_area *ipa_uc_shared(struct ipa *ipa)  in ipa_uc_shared()  argument
122 	const struct ipa_mem *mem = ipa_mem_find(ipa, IPA_MEM_UC_SHARED);  in ipa_uc_shared()
123 	u32 offset = ipa->mem_offset + mem->offset;  in ipa_uc_shared()
125 	return ipa->mem_virt + offset;  in ipa_uc_shared()
128 /* Microcontroller event IPA interrupt handler */
129 static void ipa_uc_event_handler(struct ipa *ipa)  in ipa_uc_event_handler()  argument
131 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in ipa_uc_event_handler()
132 	struct device *dev = ipa->dev;  in ipa_uc_event_handler()
142 /* Microcontroller response IPA interrupt handler */
143 static void ipa_uc_response_hdlr(struct ipa *ipa)  in ipa_uc_response_hdlr()  argument
145 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in ipa_uc_response_hdlr()
146 	struct device *dev = ipa->dev;  in ipa_uc_response_hdlr()
158 		if (ipa->uc_powered) {  in ipa_uc_response_hdlr()
159 			ipa->uc_loaded = true;  in ipa_uc_response_hdlr()
160 			ipa_power_retention(ipa, true);  in ipa_uc_response_hdlr()
163 			ipa->uc_powered = false;  in ipa_uc_response_hdlr()
175 void ipa_uc_interrupt_handler(struct ipa *ipa, enum ipa_irq_id irq_id)  in ipa_uc_interrupt_handler()  argument
179 		ipa_uc_event_handler(ipa);  in ipa_uc_interrupt_handler()
181 		ipa_uc_response_hdlr(ipa);  in ipa_uc_interrupt_handler()
184 /* Configure the IPA microcontroller subsystem */
185 void ipa_uc_config(struct ipa *ipa)  in ipa_uc_config()  argument
187 	ipa->uc_powered = false;  in ipa_uc_config()
188 	ipa->uc_loaded = false;  in ipa_uc_config()
189 	ipa_interrupt_enable(ipa, IPA_IRQ_UC_0);  in ipa_uc_config()
190 	ipa_interrupt_enable(ipa, IPA_IRQ_UC_1);  in ipa_uc_config()
194 void ipa_uc_deconfig(struct ipa *ipa)  in ipa_uc_deconfig()  argument
196 	struct device *dev = ipa->dev;  in ipa_uc_deconfig()
198 	ipa_interrupt_disable(ipa, IPA_IRQ_UC_1);  in ipa_uc_deconfig()
199 	ipa_interrupt_disable(ipa, IPA_IRQ_UC_0);  in ipa_uc_deconfig()
200 	if (ipa->uc_loaded)  in ipa_uc_deconfig()
201 		ipa_power_retention(ipa, false);  in ipa_uc_deconfig()
203 	if (!ipa->uc_powered)  in ipa_uc_deconfig()
211 void ipa_uc_power(struct ipa *ipa)  in ipa_uc_power()  argument
213 	struct device *dev = ipa->dev;  in ipa_uc_power()
227 		ipa->uc_powered = true;  in ipa_uc_power()
232 static void send_uc_command(struct ipa *ipa, u32 command, u32 command_param)  in send_uc_command()  argument
234 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in send_uc_command()
246 	reg = ipa_reg(ipa, IPA_IRQ_UC);  in send_uc_command()
249 	iowrite32(val, ipa->reg_virt + reg_offset(reg));  in send_uc_command()
253 void ipa_uc_panic_notifier(struct ipa *ipa)  in ipa_uc_panic_notifier()  argument
255 	if (!ipa->uc_loaded)  in ipa_uc_panic_notifier()
258 	send_uc_command(ipa, IPA_UC_COMMAND_ERR_FATAL, 0);  in ipa_uc_panic_notifier()