12 #include "ipa.h"
16  * DOC:  The IPA embedded microcontroller
18  * The IPA incorporates a microcontroller that is able to do some additional
28  * A 128 byte block of structured memory within the IPA SRAM is used together
30  * AP and the IPA microcontroller.  Each side writes data to the shared area
63  * A shared memory area at the base of IPA resident memory is used for
117 static struct ipa_uc_mem_area *ipa_uc_shared(struct ipa *ipa)  in ipa_uc_shared()  argument
119 	const struct ipa_mem *mem = ipa_mem_find(ipa, IPA_MEM_UC_SHARED);  in ipa_uc_shared()
120 	u32 offset = ipa->mem_offset + mem->offset;  in ipa_uc_shared()
122 	return ipa->mem_virt + offset;  in ipa_uc_shared()
125 /* Microcontroller event IPA interrupt handler */
126 static void ipa_uc_event_handler(struct ipa *ipa, enum ipa_irq_id irq_id)  in ipa_uc_event_handler()  argument
128 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in ipa_uc_event_handler()
129 	struct device *dev = &ipa->pdev->dev;  in ipa_uc_event_handler()
139 /* Microcontroller response IPA interrupt handler */
140 static void ipa_uc_response_hdlr(struct ipa *ipa, enum ipa_irq_id irq_id)  in ipa_uc_response_hdlr()  argument
142 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in ipa_uc_response_hdlr()
143 	struct device *dev = &ipa->pdev->dev;  in ipa_uc_response_hdlr()
155 		if (ipa->uc_powered) {  in ipa_uc_response_hdlr()
156 			ipa->uc_loaded = true;  in ipa_uc_response_hdlr()
159 			ipa->uc_powered = false;  in ipa_uc_response_hdlr()
171 /* Configure the IPA microcontroller subsystem */
172 void ipa_uc_config(struct ipa *ipa)  in ipa_uc_config()  argument
174 	ipa->uc_powered = false;  in ipa_uc_config()
175 	ipa->uc_loaded = false;  in ipa_uc_config()
176 	ipa_interrupt_add(ipa->interrupt, IPA_IRQ_UC_0, ipa_uc_event_handler);  in ipa_uc_config()
177 	ipa_interrupt_add(ipa->interrupt, IPA_IRQ_UC_1, ipa_uc_response_hdlr);  in ipa_uc_config()
181 void ipa_uc_deconfig(struct ipa *ipa)  in ipa_uc_deconfig()  argument
183 	struct device *dev = &ipa->pdev->dev;  in ipa_uc_deconfig()
185 	ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_1);  in ipa_uc_deconfig()
186 	ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_0);  in ipa_uc_deconfig()
187 	if (!ipa->uc_powered)  in ipa_uc_deconfig()
195 void ipa_uc_power(struct ipa *ipa)  in ipa_uc_power()  argument
206 	dev = &ipa->pdev->dev;  in ipa_uc_power()
212 		ipa->uc_powered = true;  in ipa_uc_power()
217 static void send_uc_command(struct ipa *ipa, u32 command, u32 command_param)  in send_uc_command()  argument
219 	struct ipa_uc_mem_area *shared = ipa_uc_shared(ipa);  in send_uc_command()
232 	offset = ipa_reg_irq_uc_offset(ipa->version);  in send_uc_command()
233 	iowrite32(val, ipa->reg_virt + offset);  in send_uc_command()
237 void ipa_uc_panic_notifier(struct ipa *ipa)  in ipa_uc_panic_notifier()  argument
239 	if (!ipa->uc_loaded)  in ipa_uc_panic_notifier()
242 	send_uc_command(ipa, IPA_UC_COMMAND_ERR_FATAL, 0);  in ipa_uc_panic_notifier()