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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/asm-powerpc/uninorth.h
2 * uninorth.h: definitions for using the "UniNorth" host bridge chip
3 * from Apple. This chip is used on "Core99" machines
4 * This also includes U2 used on more recent MacRISC2/3
9 #ifndef __ASM_UNINORTH_H__
10 #define __ASM_UNINORTH_H__
13 * Uni-N and U3 config space reg. definitions
18 /* Address ranges selection. This one should work with Bandit too */
20 #define UNI_N_ADDR_SELECT 0x48
21 #define UNI_N_ADDR_COARSE_MASK 0xffff0000 /* 256Mb regions at *0000000 */
22 #define UNI_N_ADDR_FINE_MASK 0x0000ffff /* 16Mb regions at f*000000 */
26 #define UNI_N_CFG_GART_BASE 0x8c
27 #define UNI_N_CFG_AGP_BASE 0x90
28 #define UNI_N_CFG_GART_CTRL 0x94
29 #define UNI_N_CFG_INTERNAL_STATUS 0x98
30 #define UNI_N_CFG_GART_DUMMY_PAGE 0xa4
32 /* UNI_N_CFG_GART_CTRL bits definitions */
33 #define UNI_N_CFG_GART_INVAL 0x00000001
34 #define UNI_N_CFG_GART_ENABLE 0x00000100
35 #define UNI_N_CFG_GART_2xRESET 0x00010000
36 #define UNI_N_CFG_GART_DISSBADET 0x00020000
37 /* The following seems to only be used only on U3 <j.glisse@gmail.com> */
38 #define U3_N_CFG_GART_SYNCMODE 0x00040000
39 #define U3_N_CFG_GART_PERFRD 0x00080000
40 #define U3_N_CFG_GART_B2BGNT 0x00200000
41 #define U3_N_CFG_GART_FASTDDR 0x00400000
43 /* My understanding of UniNorth AGP as of UniNorth rev 1.0x,
44 * revision 1.5 (x4 AGP) may need further changes.
46 * AGP_BASE register contains the base address of the AGP aperture on
47 * the AGP bus. It doesn't seem to be visible to the CPU as of UniNorth 1.x,
48 * even if decoding of this address range is enabled in the address select
49 * register. Apparently, the only supported bases are 256Mb multiples
50 * (high 4 bits of that register).
52 * GART_BASE register appear to contain the physical address of the GART
53 * in system memory in the high address bits (page aligned), and the
54 * GART size in the low order bits (number of GART pages)
56 * The GART format itself is one 32bits word per physical memory page.
57 * This word contains, in little-endian format (!!!), the physical address
58 * of the page in the high bits, and what appears to be an "enable" bit
59 * in the LSB bit (0) that must be set to 1 when the entry is valid.
61 * Obviously, the GART is not cache coherent and so any change to it
62 * must be flushed to memory (or maybe just make the GART space non
63 * cachable). AGP memory itself doens't seem to be cache coherent neither.
65 * In order to invalidate the GART (which is probably necessary to inval
66 * the bridge internal TLBs), the following sequence has to be written,
67 * in order, to the GART_CTRL register:
69 * UNI_N_CFG_GART_ENABLE | UNI_N_CFG_GART_INVAL
70 * UNI_N_CFG_GART_ENABLE
71 * UNI_N_CFG_GART_ENABLE | UNI_N_CFG_GART_2xRESET
72 * UNI_N_CFG_GART_ENABLE
74 * As far as AGP "features" are concerned, it looks like fast write may
75 * not be supported but this has to be confirmed.
77 * Turning on AGP seem to require a double invalidate operation, one before
78 * setting the AGP command register, on after.
80 * Turning off AGP seems to require the following sequence: first wait
81 * for the AGP to be idle by reading the internal status register, then
82 * write in that order to the GART_CTRL register:
84 * UNI_N_CFG_GART_ENABLE | UNI_N_CFG_GART_INVAL
86 * UNI_N_CFG_GART_2xRESET
91 * Uni-N memory mapped reg. definitions
93 * Those registers are Big-Endian !!
95 * Their meaning come from either Darwin and/or from experiments I made with
96 * the bootrom, I'm not sure about their exact meaning yet
100 /* Version of the UniNorth chip */
101 #define UNI_N_VERSION 0x0000 /* Known versions: 3,7 and 8 */
103 #define UNI_N_VERSION_107 0x0003 /* 1.0.7 */
104 #define UNI_N_VERSION_10A 0x0007 /* 1.0.10 */
105 #define UNI_N_VERSION_150 0x0011 /* 1.5 */
106 #define UNI_N_VERSION_200 0x0024 /* 2.0 */
107 #define UNI_N_VERSION_PANGEA 0x00C0 /* Integrated U1 + K */
108 #define UNI_N_VERSION_INTREPID 0x00D2 /* Integrated U2 + K */
109 #define UNI_N_VERSION_300 0x0030 /* 3.0 (U3 on G5) */
111 /* This register is used to enable/disable various clocks */
112 #define UNI_N_CLOCK_CNTL 0x0020
113 #define UNI_N_CLOCK_CNTL_PCI 0x00000001 /* PCI2 clock control */
114 #define UNI_N_CLOCK_CNTL_GMAC 0x00000002 /* GMAC clock control */
115 #define UNI_N_CLOCK_CNTL_FW 0x00000004 /* FireWire clock control */
116 #define UNI_N_CLOCK_CNTL_ATA100 0x00000010 /* ATA-100 clock control (U2) */
118 /* Power Management control */
119 #define UNI_N_POWER_MGT 0x0030
120 #define UNI_N_POWER_MGT_NORMAL 0x00
121 #define UNI_N_POWER_MGT_IDLE2 0x01
122 #define UNI_N_POWER_MGT_SLEEP 0x02
124 /* This register is configured by Darwin depending on the UniN
127 #define UNI_N_ARB_CTRL 0x0040
128 #define UNI_N_ARB_CTRL_QACK_DELAY_SHIFT 15
129 #define UNI_N_ARB_CTRL_QACK_DELAY_MASK 0x0e1f8000
130 #define UNI_N_ARB_CTRL_QACK_DELAY 0x30
131 #define UNI_N_ARB_CTRL_QACK_DELAY105 0x00
133 /* This one _might_ return the CPU number of the CPU reading it;
134 * the bootROM decides whether to boot or to sleep/spinloop depending
135 * on this register beeing 0 or not
137 #define UNI_N_CPU_NUMBER 0x0050
139 /* This register appear to be read by the bootROM to decide what
140 * to do on a non-recoverable reset (powerup or wakeup)
142 #define UNI_N_HWINIT_STATE 0x0070
143 #define UNI_N_HWINIT_STATE_SLEEPING 0x01
144 #define UNI_N_HWINIT_STATE_RUNNING 0x02
145 /* This last bit appear to be used by the bootROM to know the second
146 * CPU has started and will enter it's sleep loop with IP=0
148 #define UNI_N_HWINIT_STATE_CPU1_FLAG 0x10000000
150 /* This register controls AACK delay, which is set when 2004 iBook/PowerBook
151 * is in low speed mode.
153 #define UNI_N_AACK_DELAY 0x0100
154 #define UNI_N_AACK_DELAY_ENABLE 0x00000001
156 /* Clock status for Intrepid */
157 #define UNI_N_CLOCK_STOP_STATUS0 0x0150
158 #define UNI_N_CLOCK_STOPPED_EXTAGP 0x00200000
159 #define UNI_N_CLOCK_STOPPED_AGPDEL 0x00100000
160 #define UNI_N_CLOCK_STOPPED_I2S0_45_49 0x00080000
161 #define UNI_N_CLOCK_STOPPED_I2S0_18 0x00040000
162 #define UNI_N_CLOCK_STOPPED_I2S1_45_49 0x00020000
163 #define UNI_N_CLOCK_STOPPED_I2S1_18 0x00010000
164 #define UNI_N_CLOCK_STOPPED_TIMER 0x00008000
165 #define UNI_N_CLOCK_STOPPED_SCC_RTCLK18 0x00004000
166 #define UNI_N_CLOCK_STOPPED_SCC_RTCLK32 0x00002000
167 #define UNI_N_CLOCK_STOPPED_SCC_VIA32 0x00001000
168 #define UNI_N_CLOCK_STOPPED_SCC_SLOT0 0x00000800
169 #define UNI_N_CLOCK_STOPPED_SCC_SLOT1 0x00000400
170 #define UNI_N_CLOCK_STOPPED_SCC_SLOT2 0x00000200
171 #define UNI_N_CLOCK_STOPPED_PCI_FBCLKO 0x00000100
172 #define UNI_N_CLOCK_STOPPED_VEO0 0x00000080
173 #define UNI_N_CLOCK_STOPPED_VEO1 0x00000040
174 #define UNI_N_CLOCK_STOPPED_USB0 0x00000020
175 #define UNI_N_CLOCK_STOPPED_USB1 0x00000010
176 #define UNI_N_CLOCK_STOPPED_USB2 0x00000008
177 #define UNI_N_CLOCK_STOPPED_32 0x00000004
178 #define UNI_N_CLOCK_STOPPED_45 0x00000002
179 #define UNI_N_CLOCK_STOPPED_49 0x00000001
181 #define UNI_N_CLOCK_STOP_STATUS1 0x0160
182 #define UNI_N_CLOCK_STOPPED_PLL4REF 0x00080000
183 #define UNI_N_CLOCK_STOPPED_CPUDEL 0x00040000
184 #define UNI_N_CLOCK_STOPPED_CPU 0x00020000
185 #define UNI_N_CLOCK_STOPPED_BUF_REFCKO 0x00010000
186 #define UNI_N_CLOCK_STOPPED_PCI2 0x00008000
187 #define UNI_N_CLOCK_STOPPED_FW 0x00004000
188 #define UNI_N_CLOCK_STOPPED_GB 0x00002000
189 #define UNI_N_CLOCK_STOPPED_ATA66 0x00001000
190 #define UNI_N_CLOCK_STOPPED_ATA100 0x00000800
191 #define UNI_N_CLOCK_STOPPED_MAX 0x00000400
192 #define UNI_N_CLOCK_STOPPED_PCI1 0x00000200
193 #define UNI_N_CLOCK_STOPPED_KLPCI 0x00000100
194 #define UNI_N_CLOCK_STOPPED_USB0PCI 0x00000080
195 #define UNI_N_CLOCK_STOPPED_USB1PCI 0x00000040
196 #define UNI_N_CLOCK_STOPPED_USB2PCI 0x00000020
197 #define UNI_N_CLOCK_STOPPED_7PCI1 0x00000008
198 #define UNI_N_CLOCK_STOPPED_AGP 0x00000004
199 #define UNI_N_CLOCK_STOPPED_PCI0 0x00000002
200 #define UNI_N_CLOCK_STOPPED_18 0x00000001
202 /* Intrepid registe to OF do-platform-clockspreading */
203 #define UNI_N_CLOCK_SPREADING 0x190
205 /* Uninorth 1.5 rev. has additional perf. monitor registers at 0xf00-0xf50 */
209 * U3 specific registers
214 #define U3_TOGGLE_REG 0x00e0
215 #define U3_PMC_START_STOP 0x0001
216 #define U3_MPIC_RESET 0x0002
217 #define U3_MPIC_OUTPUT_ENABLE 0x0004
219 /* U3 API PHY Config 1 */
220 #define U3_API_PHY_CONFIG_1 0x23030
222 /* U3 HyperTransport registers */
223 #define U3_HT_CONFIG_BASE 0x70000
224 #define U3_HT_LINK_COMMAND 0x100
225 #define U3_HT_LINK_CONFIG 0x110
226 #define U3_HT_LINK_FREQ 0x120
228 #endif /* __ASM_UNINORTH_H__ */
229 #endif /* __KERNEL__ */