1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
45 #define SHMEM_VF_RESET_STATE ((uint32_t)-1)
66  * direction: 0 for request, VF->PF; 1 for response, PF->VF.
95 #define SMC_LAST_DWORD (SMC_APERTURE_DWORDS - 1)
98 mana_smc_poll_register(void __iomem *base, bool reset)  in mana_smc_poll_register()  argument
100 	void __iomem *ptr = (uint8_t *)base + SMC_LAST_DWORD * SMC_BASIC_UNIT;  in mana_smc_poll_register()
108 	for (i = 0; i < 20 * 1000; i++)  {  in mana_smc_poll_register()
119 		DELAY(1000);  in mana_smc_poll_register()
129 	void __iomem *base = sc->base;  in mana_smc_read_response()  local
134 	err = mana_smc_poll_register(base, reset_vf);  in mana_smc_read_response()
139 	    readl((uint8_t *)base + SMC_LAST_DWORD * SMC_BASIC_UNIT);  in mana_smc_read_response()
140 	mana_dbg(NULL, "shm response 0x%x\n", hdr.as_uint32);  in mana_smc_read_response()
148 		device_printf(sc->dev,  in mana_smc_read_response()
149 		    "Wrong SMC response 0x%x, type=%d, ver=%d\n",  in mana_smc_read_response()
156 		device_printf(sc->dev,  in mana_smc_read_response()
157 		    "SMC operation failed: 0x%x\n", hdr.status);  in mana_smc_read_response()
165 mana_smc_init(struct shm_channel *sc, device_t dev, void __iomem *base)  in mana_smc_init()  argument
167 	sc->dev = dev;  in mana_smc_init()
168 	sc->base = base;  in mana_smc_init()
188 	err = mana_smc_poll_register(sc->base, false);  in mana_smc_setup_hwc()
190 		device_printf(sc->dev,  in mana_smc_setup_hwc()
209 	 * 52-bit frame addresses are split into the lower 48 bits and upper  in mana_smc_setup_hwc()
211 	 * the start of the 256-bit shared memory region followed by 16 bits  in mana_smc_setup_hwc()
214 	 * A 16 bit EQ vector number fills out the next-to-last 32-bit dword.  in mana_smc_setup_hwc()
216 	 * The final 32-bit dword is used for protocol control information as  in mana_smc_setup_hwc()
263 	/* 32-bit protocol header in final dword */  in mana_smc_setup_hwc()
267 	hdr->msg_type = SMC_MSG_TYPE_ESTABLISH_HWC;  in mana_smc_setup_hwc()
268 	hdr->msg_version = SMC_MSG_TYPE_ESTABLISH_HWC_VERSION;  in mana_smc_setup_hwc()
269 	hdr->direction = SMC_MSG_DIRECTION_REQUEST;  in mana_smc_setup_hwc()
270 	hdr->reset_vf = reset_vf;  in mana_smc_setup_hwc()
272 	/* Write 256-message buffer to shared memory (final 32-bit write  in mana_smc_setup_hwc()
277 		mana_dbg(NULL, "write shm_buf %d, val: 0x%x\n",  in mana_smc_setup_hwc()
279 		writel((char *)sc->base + i * SMC_BASIC_UNIT, *dword++);  in mana_smc_setup_hwc()
289 		device_printf(sc->dev,  in mana_smc_setup_hwc()
304 	err = mana_smc_poll_register(sc->base, false);  in mana_smc_teardown_hwc()
306 		device_printf(sc->dev, "Timeout when tearing down HWC\n");  in mana_smc_teardown_hwc()
316 	/* Write message in high 32 bits of 256-bit shared memory, causing HW  in mana_smc_teardown_hwc()
319 	writel((char *)sc->base + SMC_LAST_DWORD * SMC_BASIC_UNIT,  in mana_smc_teardown_hwc()
329 		device_printf(sc->dev,  in mana_smc_teardown_hwc()