1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0
2a88b5ba8SSam Ravnborg /* pci_msi.c: Sparc64 MSI support common layer.
3a88b5ba8SSam Ravnborg *
4a88b5ba8SSam Ravnborg * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
5a88b5ba8SSam Ravnborg */
6a88b5ba8SSam Ravnborg #include <linux/kernel.h>
7a88b5ba8SSam Ravnborg #include <linux/interrupt.h>
8*263291faSRob Herring #include <linux/of.h>
9*263291faSRob Herring #include <linux/platform_device.h>
105a0e3ad6STejun Heo #include <linux/slab.h>
11a88b5ba8SSam Ravnborg #include <linux/irq.h>
12a88b5ba8SSam Ravnborg
13a88b5ba8SSam Ravnborg #include "pci_impl.h"
14a88b5ba8SSam Ravnborg
sparc64_msiq_interrupt(int irq,void * cookie)15a88b5ba8SSam Ravnborg static irqreturn_t sparc64_msiq_interrupt(int irq, void *cookie)
16a88b5ba8SSam Ravnborg {
17a88b5ba8SSam Ravnborg struct sparc64_msiq_cookie *msiq_cookie = cookie;
18a88b5ba8SSam Ravnborg struct pci_pbm_info *pbm = msiq_cookie->pbm;
19a88b5ba8SSam Ravnborg unsigned long msiqid = msiq_cookie->msiqid;
20a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops;
21a88b5ba8SSam Ravnborg unsigned long orig_head, head;
22a88b5ba8SSam Ravnborg int err;
23a88b5ba8SSam Ravnborg
24a88b5ba8SSam Ravnborg ops = pbm->msi_ops;
25a88b5ba8SSam Ravnborg
26a88b5ba8SSam Ravnborg err = ops->get_head(pbm, msiqid, &head);
27a88b5ba8SSam Ravnborg if (unlikely(err < 0))
28a88b5ba8SSam Ravnborg goto err_get_head;
29a88b5ba8SSam Ravnborg
30a88b5ba8SSam Ravnborg orig_head = head;
31a88b5ba8SSam Ravnborg for (;;) {
32a88b5ba8SSam Ravnborg unsigned long msi;
33a88b5ba8SSam Ravnborg
34a88b5ba8SSam Ravnborg err = ops->dequeue_msi(pbm, msiqid, &head, &msi);
35a88b5ba8SSam Ravnborg if (likely(err > 0)) {
3644ed3c0cSSam Ravnborg unsigned int irq;
37a88b5ba8SSam Ravnborg
3844ed3c0cSSam Ravnborg irq = pbm->msi_irq_table[msi - pbm->msi_first];
3916741ea0SThomas Gleixner generic_handle_irq(irq);
40a88b5ba8SSam Ravnborg }
41a88b5ba8SSam Ravnborg
42a88b5ba8SSam Ravnborg if (unlikely(err < 0))
43a88b5ba8SSam Ravnborg goto err_dequeue;
44a88b5ba8SSam Ravnborg
45a88b5ba8SSam Ravnborg if (err == 0)
46a88b5ba8SSam Ravnborg break;
47a88b5ba8SSam Ravnborg }
48a88b5ba8SSam Ravnborg if (likely(head != orig_head)) {
49a88b5ba8SSam Ravnborg err = ops->set_head(pbm, msiqid, head);
50a88b5ba8SSam Ravnborg if (unlikely(err < 0))
51a88b5ba8SSam Ravnborg goto err_set_head;
52a88b5ba8SSam Ravnborg }
53a88b5ba8SSam Ravnborg return IRQ_HANDLED;
54a88b5ba8SSam Ravnborg
55a88b5ba8SSam Ravnborg err_get_head:
56a88b5ba8SSam Ravnborg printk(KERN_EMERG "MSI: Get head on msiqid[%lu] gives error %d\n",
57a88b5ba8SSam Ravnborg msiqid, err);
58a88b5ba8SSam Ravnborg goto err_out;
59a88b5ba8SSam Ravnborg
60a88b5ba8SSam Ravnborg err_dequeue:
61a88b5ba8SSam Ravnborg printk(KERN_EMERG "MSI: Dequeue head[%lu] from msiqid[%lu] "
62a88b5ba8SSam Ravnborg "gives error %d\n",
63a88b5ba8SSam Ravnborg head, msiqid, err);
64a88b5ba8SSam Ravnborg goto err_out;
65a88b5ba8SSam Ravnborg
66a88b5ba8SSam Ravnborg err_set_head:
67a88b5ba8SSam Ravnborg printk(KERN_EMERG "MSI: Set head[%lu] on msiqid[%lu] "
68a88b5ba8SSam Ravnborg "gives error %d\n",
69a88b5ba8SSam Ravnborg head, msiqid, err);
70a88b5ba8SSam Ravnborg goto err_out;
71a88b5ba8SSam Ravnborg
72a88b5ba8SSam Ravnborg err_out:
73a88b5ba8SSam Ravnborg return IRQ_NONE;
74a88b5ba8SSam Ravnborg }
75a88b5ba8SSam Ravnborg
pick_msiq(struct pci_pbm_info * pbm)76a88b5ba8SSam Ravnborg static u32 pick_msiq(struct pci_pbm_info *pbm)
77a88b5ba8SSam Ravnborg {
78a88b5ba8SSam Ravnborg static DEFINE_SPINLOCK(rotor_lock);
79a88b5ba8SSam Ravnborg unsigned long flags;
80a88b5ba8SSam Ravnborg u32 ret, rotor;
81a88b5ba8SSam Ravnborg
82a88b5ba8SSam Ravnborg spin_lock_irqsave(&rotor_lock, flags);
83a88b5ba8SSam Ravnborg
84a88b5ba8SSam Ravnborg rotor = pbm->msiq_rotor;
85a88b5ba8SSam Ravnborg ret = pbm->msiq_first + rotor;
86a88b5ba8SSam Ravnborg
87a88b5ba8SSam Ravnborg if (++rotor >= pbm->msiq_num)
88a88b5ba8SSam Ravnborg rotor = 0;
89a88b5ba8SSam Ravnborg pbm->msiq_rotor = rotor;
90a88b5ba8SSam Ravnborg
91a88b5ba8SSam Ravnborg spin_unlock_irqrestore(&rotor_lock, flags);
92a88b5ba8SSam Ravnborg
93a88b5ba8SSam Ravnborg return ret;
94a88b5ba8SSam Ravnborg }
95a88b5ba8SSam Ravnborg
96a88b5ba8SSam Ravnborg
alloc_msi(struct pci_pbm_info * pbm)97a88b5ba8SSam Ravnborg static int alloc_msi(struct pci_pbm_info *pbm)
98a88b5ba8SSam Ravnborg {
99a88b5ba8SSam Ravnborg int i;
100a88b5ba8SSam Ravnborg
101a88b5ba8SSam Ravnborg for (i = 0; i < pbm->msi_num; i++) {
102a88b5ba8SSam Ravnborg if (!test_and_set_bit(i, pbm->msi_bitmap))
103a88b5ba8SSam Ravnborg return i + pbm->msi_first;
104a88b5ba8SSam Ravnborg }
105a88b5ba8SSam Ravnborg
106a88b5ba8SSam Ravnborg return -ENOENT;
107a88b5ba8SSam Ravnborg }
108a88b5ba8SSam Ravnborg
free_msi(struct pci_pbm_info * pbm,int msi_num)109a88b5ba8SSam Ravnborg static void free_msi(struct pci_pbm_info *pbm, int msi_num)
110a88b5ba8SSam Ravnborg {
111a88b5ba8SSam Ravnborg msi_num -= pbm->msi_first;
112a88b5ba8SSam Ravnborg clear_bit(msi_num, pbm->msi_bitmap);
113a88b5ba8SSam Ravnborg }
114a88b5ba8SSam Ravnborg
115a88b5ba8SSam Ravnborg static struct irq_chip msi_irq = {
11689a7183dSThomas Gleixner .name = "PCI-MSI",
117280510f1SThomas Gleixner .irq_mask = pci_msi_mask_irq,
118280510f1SThomas Gleixner .irq_unmask = pci_msi_unmask_irq,
119280510f1SThomas Gleixner .irq_enable = pci_msi_unmask_irq,
120280510f1SThomas Gleixner .irq_disable = pci_msi_mask_irq,
121a88b5ba8SSam Ravnborg /* XXX affinity XXX */
122a88b5ba8SSam Ravnborg };
123a88b5ba8SSam Ravnborg
sparc64_setup_msi_irq(unsigned int * irq_p,struct pci_dev * pdev,struct msi_desc * entry)12444ed3c0cSSam Ravnborg static int sparc64_setup_msi_irq(unsigned int *irq_p,
125a88b5ba8SSam Ravnborg struct pci_dev *pdev,
126a88b5ba8SSam Ravnborg struct msi_desc *entry)
127a88b5ba8SSam Ravnborg {
128a88b5ba8SSam Ravnborg struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
129a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops = pbm->msi_ops;
130a88b5ba8SSam Ravnborg struct msi_msg msg;
131a88b5ba8SSam Ravnborg int msi, err;
132a88b5ba8SSam Ravnborg u32 msiqid;
133a88b5ba8SSam Ravnborg
13444ed3c0cSSam Ravnborg *irq_p = irq_alloc(0, 0);
135a88b5ba8SSam Ravnborg err = -ENOMEM;
13644ed3c0cSSam Ravnborg if (!*irq_p)
137a88b5ba8SSam Ravnborg goto out_err;
138a88b5ba8SSam Ravnborg
139394d441bSThomas Gleixner irq_set_chip_and_handler_name(*irq_p, &msi_irq, handle_simple_irq,
140394d441bSThomas Gleixner "MSI");
141a88b5ba8SSam Ravnborg
142a88b5ba8SSam Ravnborg err = alloc_msi(pbm);
143a88b5ba8SSam Ravnborg if (unlikely(err < 0))
14444ed3c0cSSam Ravnborg goto out_irq_free;
145a88b5ba8SSam Ravnborg
146a88b5ba8SSam Ravnborg msi = err;
147a88b5ba8SSam Ravnborg
148a88b5ba8SSam Ravnborg msiqid = pick_msiq(pbm);
149a88b5ba8SSam Ravnborg
150a88b5ba8SSam Ravnborg err = ops->msi_setup(pbm, msiqid, msi,
151e58f2259SThomas Gleixner (entry->pci.msi_attrib.is_64 ? 1 : 0));
152a88b5ba8SSam Ravnborg if (err)
153a88b5ba8SSam Ravnborg goto out_msi_free;
154a88b5ba8SSam Ravnborg
15544ed3c0cSSam Ravnborg pbm->msi_irq_table[msi - pbm->msi_first] = *irq_p;
156a88b5ba8SSam Ravnborg
157e58f2259SThomas Gleixner if (entry->pci.msi_attrib.is_64) {
158a88b5ba8SSam Ravnborg msg.address_hi = pbm->msi64_start >> 32;
159a88b5ba8SSam Ravnborg msg.address_lo = pbm->msi64_start & 0xffffffff;
160a88b5ba8SSam Ravnborg } else {
161a88b5ba8SSam Ravnborg msg.address_hi = 0;
162a88b5ba8SSam Ravnborg msg.address_lo = pbm->msi32_start;
163a88b5ba8SSam Ravnborg }
164a88b5ba8SSam Ravnborg msg.data = msi;
165a88b5ba8SSam Ravnborg
166394d441bSThomas Gleixner irq_set_msi_desc(*irq_p, entry);
16783a18912SJiang Liu pci_write_msi_msg(*irq_p, &msg);
168a88b5ba8SSam Ravnborg
169a88b5ba8SSam Ravnborg return 0;
170a88b5ba8SSam Ravnborg
171a88b5ba8SSam Ravnborg out_msi_free:
172a88b5ba8SSam Ravnborg free_msi(pbm, msi);
173a88b5ba8SSam Ravnborg
17444ed3c0cSSam Ravnborg out_irq_free:
175394d441bSThomas Gleixner irq_set_chip(*irq_p, NULL);
17644ed3c0cSSam Ravnborg irq_free(*irq_p);
17744ed3c0cSSam Ravnborg *irq_p = 0;
178a88b5ba8SSam Ravnborg
179a88b5ba8SSam Ravnborg out_err:
180a88b5ba8SSam Ravnborg return err;
181a88b5ba8SSam Ravnborg }
182a88b5ba8SSam Ravnborg
sparc64_teardown_msi_irq(unsigned int irq,struct pci_dev * pdev)18344ed3c0cSSam Ravnborg static void sparc64_teardown_msi_irq(unsigned int irq,
184a88b5ba8SSam Ravnborg struct pci_dev *pdev)
185a88b5ba8SSam Ravnborg {
186a88b5ba8SSam Ravnborg struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
187a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops = pbm->msi_ops;
188a88b5ba8SSam Ravnborg unsigned int msi_num;
189a88b5ba8SSam Ravnborg int i, err;
190a88b5ba8SSam Ravnborg
191a88b5ba8SSam Ravnborg for (i = 0; i < pbm->msi_num; i++) {
19244ed3c0cSSam Ravnborg if (pbm->msi_irq_table[i] == irq)
193a88b5ba8SSam Ravnborg break;
194a88b5ba8SSam Ravnborg }
195a88b5ba8SSam Ravnborg if (i >= pbm->msi_num) {
196adedc05eSBjorn Helgaas pci_err(pdev, "%s: teardown: No MSI for irq %u\n", pbm->name,
197adedc05eSBjorn Helgaas irq);
198a88b5ba8SSam Ravnborg return;
199a88b5ba8SSam Ravnborg }
200a88b5ba8SSam Ravnborg
201a88b5ba8SSam Ravnborg msi_num = pbm->msi_first + i;
202a88b5ba8SSam Ravnborg pbm->msi_irq_table[i] = ~0U;
203a88b5ba8SSam Ravnborg
204a88b5ba8SSam Ravnborg err = ops->msi_teardown(pbm, msi_num);
205a88b5ba8SSam Ravnborg if (err) {
206adedc05eSBjorn Helgaas pci_err(pdev, "%s: teardown: ops->teardown() on MSI %u, "
207adedc05eSBjorn Helgaas "irq %u, gives error %d\n", pbm->name, msi_num, irq,
208adedc05eSBjorn Helgaas err);
209a88b5ba8SSam Ravnborg return;
210a88b5ba8SSam Ravnborg }
211a88b5ba8SSam Ravnborg
212a88b5ba8SSam Ravnborg free_msi(pbm, msi_num);
213a88b5ba8SSam Ravnborg
214394d441bSThomas Gleixner irq_set_chip(irq, NULL);
21544ed3c0cSSam Ravnborg irq_free(irq);
216a88b5ba8SSam Ravnborg }
217a88b5ba8SSam Ravnborg
msi_bitmap_alloc(struct pci_pbm_info * pbm)218a88b5ba8SSam Ravnborg static int msi_bitmap_alloc(struct pci_pbm_info *pbm)
219a88b5ba8SSam Ravnborg {
220a88b5ba8SSam Ravnborg unsigned long size, bits_per_ulong;
221a88b5ba8SSam Ravnborg
222a88b5ba8SSam Ravnborg bits_per_ulong = sizeof(unsigned long) * 8;
223a88b5ba8SSam Ravnborg size = (pbm->msi_num + (bits_per_ulong - 1)) & ~(bits_per_ulong - 1);
224a88b5ba8SSam Ravnborg size /= 8;
225a88b5ba8SSam Ravnborg BUG_ON(size % sizeof(unsigned long));
226a88b5ba8SSam Ravnborg
227a88b5ba8SSam Ravnborg pbm->msi_bitmap = kzalloc(size, GFP_KERNEL);
228a88b5ba8SSam Ravnborg if (!pbm->msi_bitmap)
229a88b5ba8SSam Ravnborg return -ENOMEM;
230a88b5ba8SSam Ravnborg
231a88b5ba8SSam Ravnborg return 0;
232a88b5ba8SSam Ravnborg }
233a88b5ba8SSam Ravnborg
msi_bitmap_free(struct pci_pbm_info * pbm)234a88b5ba8SSam Ravnborg static void msi_bitmap_free(struct pci_pbm_info *pbm)
235a88b5ba8SSam Ravnborg {
236a88b5ba8SSam Ravnborg kfree(pbm->msi_bitmap);
237a88b5ba8SSam Ravnborg pbm->msi_bitmap = NULL;
238a88b5ba8SSam Ravnborg }
239a88b5ba8SSam Ravnborg
msi_table_alloc(struct pci_pbm_info * pbm)240a88b5ba8SSam Ravnborg static int msi_table_alloc(struct pci_pbm_info *pbm)
241a88b5ba8SSam Ravnborg {
242a88b5ba8SSam Ravnborg int size, i;
243a88b5ba8SSam Ravnborg
244a88b5ba8SSam Ravnborg size = pbm->msiq_num * sizeof(struct sparc64_msiq_cookie);
245a88b5ba8SSam Ravnborg pbm->msiq_irq_cookies = kzalloc(size, GFP_KERNEL);
246a88b5ba8SSam Ravnborg if (!pbm->msiq_irq_cookies)
247a88b5ba8SSam Ravnborg return -ENOMEM;
248a88b5ba8SSam Ravnborg
249a88b5ba8SSam Ravnborg for (i = 0; i < pbm->msiq_num; i++) {
250a88b5ba8SSam Ravnborg struct sparc64_msiq_cookie *p;
251a88b5ba8SSam Ravnborg
252a88b5ba8SSam Ravnborg p = &pbm->msiq_irq_cookies[i];
253a88b5ba8SSam Ravnborg p->pbm = pbm;
254a88b5ba8SSam Ravnborg p->msiqid = pbm->msiq_first + i;
255a88b5ba8SSam Ravnborg }
256a88b5ba8SSam Ravnborg
257a88b5ba8SSam Ravnborg size = pbm->msi_num * sizeof(unsigned int);
258a88b5ba8SSam Ravnborg pbm->msi_irq_table = kzalloc(size, GFP_KERNEL);
259a88b5ba8SSam Ravnborg if (!pbm->msi_irq_table) {
260a88b5ba8SSam Ravnborg kfree(pbm->msiq_irq_cookies);
261a88b5ba8SSam Ravnborg pbm->msiq_irq_cookies = NULL;
262a88b5ba8SSam Ravnborg return -ENOMEM;
263a88b5ba8SSam Ravnborg }
264a88b5ba8SSam Ravnborg
265a88b5ba8SSam Ravnborg return 0;
266a88b5ba8SSam Ravnborg }
267a88b5ba8SSam Ravnborg
msi_table_free(struct pci_pbm_info * pbm)268a88b5ba8SSam Ravnborg static void msi_table_free(struct pci_pbm_info *pbm)
269a88b5ba8SSam Ravnborg {
270a88b5ba8SSam Ravnborg kfree(pbm->msiq_irq_cookies);
271a88b5ba8SSam Ravnborg pbm->msiq_irq_cookies = NULL;
272a88b5ba8SSam Ravnborg
273a88b5ba8SSam Ravnborg kfree(pbm->msi_irq_table);
274a88b5ba8SSam Ravnborg pbm->msi_irq_table = NULL;
275a88b5ba8SSam Ravnborg }
276a88b5ba8SSam Ravnborg
bringup_one_msi_queue(struct pci_pbm_info * pbm,const struct sparc64_msiq_ops * ops,unsigned long msiqid,unsigned long devino)277a88b5ba8SSam Ravnborg static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
278a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops,
279a88b5ba8SSam Ravnborg unsigned long msiqid,
280a88b5ba8SSam Ravnborg unsigned long devino)
281a88b5ba8SSam Ravnborg {
282a88b5ba8SSam Ravnborg int irq = ops->msiq_build_irq(pbm, msiqid, devino);
283a88b5ba8SSam Ravnborg int err, nid;
284a88b5ba8SSam Ravnborg
285a88b5ba8SSam Ravnborg if (irq < 0)
286a88b5ba8SSam Ravnborg return irq;
287a88b5ba8SSam Ravnborg
288a88b5ba8SSam Ravnborg nid = pbm->numa_node;
289a88b5ba8SSam Ravnborg if (nid != -1) {
290fb1fece5SKOSAKI Motohiro cpumask_t numa_mask;
291a88b5ba8SSam Ravnborg
292fb1fece5SKOSAKI Motohiro cpumask_copy(&numa_mask, cpumask_of_node(nid));
2932ca1a615SRusty Russell irq_set_affinity(irq, &numa_mask);
294a88b5ba8SSam Ravnborg }
295a88b5ba8SSam Ravnborg err = request_irq(irq, sparc64_msiq_interrupt, 0,
296a88b5ba8SSam Ravnborg "MSIQ",
297a88b5ba8SSam Ravnborg &pbm->msiq_irq_cookies[msiqid - pbm->msiq_first]);
298a88b5ba8SSam Ravnborg if (err)
299a88b5ba8SSam Ravnborg return err;
300a88b5ba8SSam Ravnborg
301a88b5ba8SSam Ravnborg return 0;
302a88b5ba8SSam Ravnborg }
303a88b5ba8SSam Ravnborg
sparc64_bringup_msi_queues(struct pci_pbm_info * pbm,const struct sparc64_msiq_ops * ops)304a88b5ba8SSam Ravnborg static int sparc64_bringup_msi_queues(struct pci_pbm_info *pbm,
305a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops)
306a88b5ba8SSam Ravnborg {
307a88b5ba8SSam Ravnborg int i;
308a88b5ba8SSam Ravnborg
309a88b5ba8SSam Ravnborg for (i = 0; i < pbm->msiq_num; i++) {
310a88b5ba8SSam Ravnborg unsigned long msiqid = i + pbm->msiq_first;
311a88b5ba8SSam Ravnborg unsigned long devino = i + pbm->msiq_first_devino;
312a88b5ba8SSam Ravnborg int err;
313a88b5ba8SSam Ravnborg
314a88b5ba8SSam Ravnborg err = bringup_one_msi_queue(pbm, ops, msiqid, devino);
315a88b5ba8SSam Ravnborg if (err)
316a88b5ba8SSam Ravnborg return err;
317a88b5ba8SSam Ravnborg }
318a88b5ba8SSam Ravnborg
319a88b5ba8SSam Ravnborg return 0;
320a88b5ba8SSam Ravnborg }
321a88b5ba8SSam Ravnborg
sparc64_pbm_msi_init(struct pci_pbm_info * pbm,const struct sparc64_msiq_ops * ops)322a88b5ba8SSam Ravnborg void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
323a88b5ba8SSam Ravnborg const struct sparc64_msiq_ops *ops)
324a88b5ba8SSam Ravnborg {
325a88b5ba8SSam Ravnborg const u32 *val;
326a88b5ba8SSam Ravnborg int len;
327a88b5ba8SSam Ravnborg
32861c7a080SGrant Likely val = of_get_property(pbm->op->dev.of_node, "#msi-eqs", &len);
329a88b5ba8SSam Ravnborg if (!val || len != 4)
330a88b5ba8SSam Ravnborg goto no_msi;
331a88b5ba8SSam Ravnborg pbm->msiq_num = *val;
332a88b5ba8SSam Ravnborg if (pbm->msiq_num) {
333a88b5ba8SSam Ravnborg const struct msiq_prop {
334a88b5ba8SSam Ravnborg u32 first_msiq;
335a88b5ba8SSam Ravnborg u32 num_msiq;
336a88b5ba8SSam Ravnborg u32 first_devino;
337a88b5ba8SSam Ravnborg } *mqp;
338a88b5ba8SSam Ravnborg const struct msi_range_prop {
339a88b5ba8SSam Ravnborg u32 first_msi;
340a88b5ba8SSam Ravnborg u32 num_msi;
341a88b5ba8SSam Ravnborg } *mrng;
342a88b5ba8SSam Ravnborg const struct addr_range_prop {
343a88b5ba8SSam Ravnborg u32 msi32_high;
344a88b5ba8SSam Ravnborg u32 msi32_low;
345a88b5ba8SSam Ravnborg u32 msi32_len;
346a88b5ba8SSam Ravnborg u32 msi64_high;
347a88b5ba8SSam Ravnborg u32 msi64_low;
348a88b5ba8SSam Ravnborg u32 msi64_len;
349a88b5ba8SSam Ravnborg } *arng;
350a88b5ba8SSam Ravnborg
35161c7a080SGrant Likely val = of_get_property(pbm->op->dev.of_node, "msi-eq-size", &len);
352a88b5ba8SSam Ravnborg if (!val || len != 4)
353a88b5ba8SSam Ravnborg goto no_msi;
354a88b5ba8SSam Ravnborg
355a88b5ba8SSam Ravnborg pbm->msiq_ent_count = *val;
356a88b5ba8SSam Ravnborg
35761c7a080SGrant Likely mqp = of_get_property(pbm->op->dev.of_node,
358a88b5ba8SSam Ravnborg "msi-eq-to-devino", &len);
359a88b5ba8SSam Ravnborg if (!mqp)
36061c7a080SGrant Likely mqp = of_get_property(pbm->op->dev.of_node,
361a88b5ba8SSam Ravnborg "msi-eq-devino", &len);
362a88b5ba8SSam Ravnborg if (!mqp || len != sizeof(struct msiq_prop))
363a88b5ba8SSam Ravnborg goto no_msi;
364a88b5ba8SSam Ravnborg
365a88b5ba8SSam Ravnborg pbm->msiq_first = mqp->first_msiq;
366a88b5ba8SSam Ravnborg pbm->msiq_first_devino = mqp->first_devino;
367a88b5ba8SSam Ravnborg
36861c7a080SGrant Likely val = of_get_property(pbm->op->dev.of_node, "#msi", &len);
369a88b5ba8SSam Ravnborg if (!val || len != 4)
370a88b5ba8SSam Ravnborg goto no_msi;
371a88b5ba8SSam Ravnborg pbm->msi_num = *val;
372a88b5ba8SSam Ravnborg
37361c7a080SGrant Likely mrng = of_get_property(pbm->op->dev.of_node, "msi-ranges", &len);
374a88b5ba8SSam Ravnborg if (!mrng || len != sizeof(struct msi_range_prop))
375a88b5ba8SSam Ravnborg goto no_msi;
376a88b5ba8SSam Ravnborg pbm->msi_first = mrng->first_msi;
377a88b5ba8SSam Ravnborg
37861c7a080SGrant Likely val = of_get_property(pbm->op->dev.of_node, "msi-data-mask", &len);
379a88b5ba8SSam Ravnborg if (!val || len != 4)
380a88b5ba8SSam Ravnborg goto no_msi;
381a88b5ba8SSam Ravnborg pbm->msi_data_mask = *val;
382a88b5ba8SSam Ravnborg
38361c7a080SGrant Likely val = of_get_property(pbm->op->dev.of_node, "msix-data-width", &len);
384a88b5ba8SSam Ravnborg if (!val || len != 4)
385a88b5ba8SSam Ravnborg goto no_msi;
386a88b5ba8SSam Ravnborg pbm->msix_data_width = *val;
387a88b5ba8SSam Ravnborg
38861c7a080SGrant Likely arng = of_get_property(pbm->op->dev.of_node, "msi-address-ranges",
389a88b5ba8SSam Ravnborg &len);
390a88b5ba8SSam Ravnborg if (!arng || len != sizeof(struct addr_range_prop))
391a88b5ba8SSam Ravnborg goto no_msi;
392a88b5ba8SSam Ravnborg pbm->msi32_start = ((u64)arng->msi32_high << 32) |
393a88b5ba8SSam Ravnborg (u64) arng->msi32_low;
394a88b5ba8SSam Ravnborg pbm->msi64_start = ((u64)arng->msi64_high << 32) |
395a88b5ba8SSam Ravnborg (u64) arng->msi64_low;
396a88b5ba8SSam Ravnborg pbm->msi32_len = arng->msi32_len;
397a88b5ba8SSam Ravnborg pbm->msi64_len = arng->msi64_len;
398a88b5ba8SSam Ravnborg
399a88b5ba8SSam Ravnborg if (msi_bitmap_alloc(pbm))
400a88b5ba8SSam Ravnborg goto no_msi;
401a88b5ba8SSam Ravnborg
402a88b5ba8SSam Ravnborg if (msi_table_alloc(pbm)) {
403a88b5ba8SSam Ravnborg msi_bitmap_free(pbm);
404a88b5ba8SSam Ravnborg goto no_msi;
405a88b5ba8SSam Ravnborg }
406a88b5ba8SSam Ravnborg
407a88b5ba8SSam Ravnborg if (ops->msiq_alloc(pbm)) {
408a88b5ba8SSam Ravnborg msi_table_free(pbm);
409a88b5ba8SSam Ravnborg msi_bitmap_free(pbm);
410a88b5ba8SSam Ravnborg goto no_msi;
411a88b5ba8SSam Ravnborg }
412a88b5ba8SSam Ravnborg
413a88b5ba8SSam Ravnborg if (sparc64_bringup_msi_queues(pbm, ops)) {
414a88b5ba8SSam Ravnborg ops->msiq_free(pbm);
415a88b5ba8SSam Ravnborg msi_table_free(pbm);
416a88b5ba8SSam Ravnborg msi_bitmap_free(pbm);
417a88b5ba8SSam Ravnborg goto no_msi;
418a88b5ba8SSam Ravnborg }
419a88b5ba8SSam Ravnborg
420a88b5ba8SSam Ravnborg printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
421a88b5ba8SSam Ravnborg "devino[0x%x]\n",
422a88b5ba8SSam Ravnborg pbm->name,
423a88b5ba8SSam Ravnborg pbm->msiq_first, pbm->msiq_num,
424a88b5ba8SSam Ravnborg pbm->msiq_ent_count,
425a88b5ba8SSam Ravnborg pbm->msiq_first_devino);
426a88b5ba8SSam Ravnborg printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
427a88b5ba8SSam Ravnborg "width[%u]\n",
428a88b5ba8SSam Ravnborg pbm->name,
429a88b5ba8SSam Ravnborg pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
430a88b5ba8SSam Ravnborg pbm->msix_data_width);
43190181136SSam Ravnborg printk(KERN_INFO "%s: MSI addr32[0x%llx:0x%x] "
43290181136SSam Ravnborg "addr64[0x%llx:0x%x]\n",
433a88b5ba8SSam Ravnborg pbm->name,
434a88b5ba8SSam Ravnborg pbm->msi32_start, pbm->msi32_len,
435a88b5ba8SSam Ravnborg pbm->msi64_start, pbm->msi64_len);
436a88b5ba8SSam Ravnborg printk(KERN_INFO "%s: MSI queues at RA [%016lx]\n",
437a88b5ba8SSam Ravnborg pbm->name,
438a88b5ba8SSam Ravnborg __pa(pbm->msi_queues));
439a88b5ba8SSam Ravnborg
440a88b5ba8SSam Ravnborg pbm->msi_ops = ops;
441a88b5ba8SSam Ravnborg pbm->setup_msi_irq = sparc64_setup_msi_irq;
442a88b5ba8SSam Ravnborg pbm->teardown_msi_irq = sparc64_teardown_msi_irq;
443a88b5ba8SSam Ravnborg }
444a88b5ba8SSam Ravnborg return;
445a88b5ba8SSam Ravnborg
446a88b5ba8SSam Ravnborg no_msi:
447a88b5ba8SSam Ravnborg pbm->msiq_num = 0;
448a88b5ba8SSam Ravnborg printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
449a88b5ba8SSam Ravnborg }
450