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34 #ifndef _BHND_CORES_PCI_BHND_PCI_HOSTBVAR_H_
35 #define _BHND_CORES_PCI_BHND_PCI_HOSTBVAR_H_
38 * PCI/PCIe-Gen1 Host Bridge definitions.
41 #include <sys/param.h>
44 #include "bhnd_pcivar.h"
46 DECLARE_CLASS(bhnd_pci_hostb_driver);
49 * PCI/PCIe-Gen1 endpoint-mode device quirks
53 BHND_PCI_QUIRK_NONE = 0,
56 * SBTOPCI_PREF and SBTOPCI_BURST must be set on the
57 * SSB_PCICORE_SBTOPCI2 register.
59 BHND_PCI_QUIRK_SBTOPCI2_PREF_BURST = (1<<1),
62 * SBTOPCI_RC_READMULTI must be set on the SSB_PCICORE_SBTOPCI2
65 BHND_PCI_QUIRK_SBTOPCI2_READMULTI = (1<<2),
68 * PCI CLKRUN# should be disabled on attach (via CLKRUN_DSBL).
70 * The purpose of this work-around is unclear; there is some
71 * documentation regarding earlier Broadcom drivers supporting
72 * a "force CLKRUN#" *enable* registry key for use on mobile
75 BHND_PCI_QUIRK_CLKRUN_DSBL = (1<<3),
78 * On PCI-attached BCM4321CB* boards, the PCI latency timer must be set
79 * to 960ns on initial attach.
81 BHND_PCI_QUIRK_960NS_LATTIM_OVR = (1<<4),
84 * TLP workaround for unmatched address handling is required.
86 * This TLP workaround will enable setting of the PCIe UR status bit
87 * on memory access to an unmatched address.
89 BHND_PCIE_QUIRK_UR_STATUS_FIX = (1<<5),
92 * PCI-PM power management must be explicitly enabled via
93 * the data link control register.
95 BHND_PCIE_QUIRK_PCIPM_REQEN = (1<<6),
98 * Fix L0s to L0 exit transition on SerDes <= rev9 devices.
100 * On these devices, PCIe/SerDes symbol lock can be lost if the
101 * reference clock has not fully stabilized during the L0s to L0
102 * exit transition, triggering an internal reset of the chip.
104 * The SerDes RX CDR phase lock timers and proportional/integral
105 * filters must be tweaked to ensure the CDR has fully stabilized
106 * before asserting receive sequencer completion.
108 BHND_PCIE_QUIRK_SDR9_L0s_HANG = (1<<7),
111 * The idle time for entering L1 low-power state must be
112 * explicitly set (to 114ns) to fix slow L1->L0 transition issues.
114 BHND_PCIE_QUIRK_L1_IDLE_THRESH = (1<<8),
117 * The ASPM L1 entry timer should be extended for better performance,
118 * and restored for better power savings.
120 BHND_PCIE_QUIRK_L1_TIMER_PERF = (1<<9),
123 * ASPM and ECPM settings must be overridden manually.
124 * Applies to 4311B0/4321B1 chipset revisions.
126 * The override behavior is controlled by the BHND_BFL2_PCIEWAR_OVR
127 * flag; if set, ASPM and CLKREQ should be explicitly disabled. If not
128 * set, they should be explicitly enabled.
131 * - Update SRSH_ASPM_ENB flag in the SPROM ASPM register.
132 * - Update SRSH_CLKREQ_ENB flag in the SPROM CLKREQ_REV5
134 * - Update ASPM L0S/L1 flags in PCIER_LINK_CTL register.
135 * - Clear CLKREQ (ECPM) flag in PCIER_LINK_CTL register.
138 * - Clear ASPM L1 flag in the PCIER_LINK_CTL register.
139 * - Set CLKREQ (ECPM) flag in the PCIER_LINK_CTL register.
142 * - Set CLKREQ (ECPM) flag in the PCIER_LINK_CTL register.
144 BHND_PCIE_QUIRK_ASPM_OVR = (1<<10),
147 * A subset of Apple devices did not set the BHND_BFL2_PCIEWAR_OVR
148 * flag in SPROM; on these devices, the BHND_BFL2_PCIEWAR_OVR flag
149 * should always be treated as if set.
151 BHND_PCIE_QUIRK_BFL2_PCIEWAR_EN = (1<<11),
154 * Fix SerDes polarity on SerDes <= rev9 devices.
156 * The SerDes polarity must be saved at device attachment, and
157 * restored on suspend/resume.
159 BHND_PCIE_QUIRK_SDR9_POLARITY = (1<<12),
162 * SerDes PLL down flag must be manually disabled (by ChipCommon) on
165 BHND_PCIE_QUIRK_SERDES_NOPLLDOWN = (1<<13),
168 * On attach and resume, consult the SPROM to determine whether
169 * the L2/L3-Ready w/o PCI RESET work-around must be applied.
171 * If L23READY_EXIT_NOPRST is not already set in the SPROM, set it
173 BHND_PCIE_QUIRK_SPROM_L23_PCI_RESET = (1<<14),
176 * The PCIe SerDes PLL must be configured to not retry the startup
177 * sequence upon frequency detection failure on SerDes <= rev9 devices
179 * The issue this workaround resolves is unknown.
181 BHND_PCIE_QUIRK_SDR9_NO_FREQRETRY = (1<<15),
184 * Common flag for quirks that require PCIe SerDes TX
185 * drive strength adjustment.
187 * Only applies to PCIe >= rev10 devices.
189 BHND_PCIE_QUIRK_SERDES_TXDRV_ADJUST = (1<<16),
192 * On Apple BCM94322X9 devices, the PCIe SerDes TX drive strength
193 * should be set to 700mV.
195 * The exact issue is unknown, but presumably this workaround
196 * resolves signal integrity issues with these devices.
198 * Only applies to PCIe >= rev10 devices.
200 BHND_PCIE_QUIRK_SERDES_TXDRV_700MV = (1<<17) |
201 BHND_PCIE_QUIRK_SERDES_TXDRV_ADJUST,
204 * On some Apple BCM4331-based devices, the PCIe SerDes TX drive
205 * strength should be set to its maximum.
207 * The exact issue is unknown, but presumably this workaround
208 * resolves signal integrity issues with these devices.
210 BHND_PCIE_QUIRK_SERDES_TXDRV_MAX = (1<<18) |
211 BHND_PCIE_QUIRK_SERDES_TXDRV_ADJUST,
214 * PCIe cores prior to rev18 do not support an MRRS larger than
217 BHND_PCIE_QUIRK_MAX_MRRS_128 = (1<<19),
220 * The PCIe core should be configured with an MRRS of 512 bytes.
222 BHND_PCIE_QUIRK_DEFAULT_MRRS_512 = (1<<20),
226 * bhnd_pci_hostb driver instance state.
228 struct bhnd_pcihb_softc {
229 struct bhnd_pci_softc common; /**< common bhnd_pci state */
231 device_t pci_dev; /**< host PCI device */
232 uint32_t quirks; /**< hostb device quirks */
234 /** BHND_PCIE_QUIRK_ASPM_OVR state. */
237 * ASPM/CLKREQ override setting.
239 * If true, ASPM/CLKREQ should be overridden as enabled.
240 * If false, ASPM/CLKREQ should be overridden as disabled.
243 } aspm_quirk_override;
245 /** BHND_PCIE_QUIRK_SDR9_POLARITY state. */
248 * PCIe SerDes RX polarity.
250 * Initialized to the PCIe link's RX polarity
251 * at attach time. This is used to restore the
252 * correct polarity on resume */
254 } sdr9_quirk_polarity;
258 #endif /* _BHND_CORES_PCI_BHND_PCI_HOSTBVAR_H_ */