1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
50 	u_int32_t	initial_aperture; /* aperture size at startup */
104 	sc->initial_aperture = AGP_GET_APERTURE(dev);  in agp_ali_attach()
105 	if (sc->initial_aperture == 0) {  in agp_ali_attach()
106 		device_printf(dev, "bad initial aperture size, disabling\n");  in agp_ali_attach()
117 		 * aperture so that the gatt size reduces.  in agp_ali_attach()
124 	sc->gatt = gatt;  in agp_ali_attach()
128 	pci_write_config(dev, AGP_ALI_ATTBASE, gatt->ag_physical |  in agp_ali_attach()
131 	/* Enable the TLB. */  in agp_ali_attach()
145 	/* Disable the TLB.. */  in agp_ali_detach()
149 	AGP_SET_APERTURE(dev, sc->initial_aperture);  in agp_ali_detach()
153 	agp_free_gatt(sc->gatt);  in agp_ali_detach()
161 	0,			/* 0 - invalid */
162 	1,			/* 1 - invalid */
163 	2,			/* 2 - invalid */
164 	4*M,			/* 3 - invalid */
165 	8*M,			/* 4 - invalid */
166 	0,			/* 5 - invalid */
167 	16*M,			/* 6 - invalid */
168 	32*M,			/* 7 - invalid */
169 	64*M,			/* 8 - invalid */
170 	128*M,			/* 9 - invalid */
171 	256*M,			/* 10 - invalid */
179 	 * The aperture size is derived from the low bits of attbase.  in agp_ali_get_aperture()
180 	 * I'm not sure this is correct..  in agp_ali_get_aperture()
182 	int i = pci_read_config(dev, AGP_ALI_ATTBASE, 4) & 0xf;  in agp_ali_get_aperture()  local
183 	if (i >= AGP_ALI_TABLE_SIZE)  in agp_ali_get_aperture()
185 	return agp_ali_table[i];  in agp_ali_get_aperture()
191 	int i;  in agp_ali_set_aperture()  local
194 	for (i = 0; i < AGP_ALI_TABLE_SIZE; i++)  in agp_ali_set_aperture()
195 		if (agp_ali_table[i] == aperture)  in agp_ali_set_aperture()
197 	if (i == AGP_ALI_TABLE_SIZE)  in agp_ali_set_aperture()
201 	pci_write_config(dev, AGP_ALI_ATTBASE, (attbase & ~0xf) | i, 4);  in agp_ali_set_aperture()
210 	if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))  in agp_ali_bind_page()
213 	sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;  in agp_ali_bind_page()
222 	if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))  in agp_ali_unbind_page()
225 	sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;  in agp_ali_unbind_page()