275 lines
7.1 KiB
Diff
275 lines
7.1 KiB
Diff
From c4fb5adbe45b3a1cfc509a64bb92429ab0d6fc37 Mon Sep 17 00:00:00 2001
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From: Hauke Mehrtens <hauke@hauke-m.de>
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Date: Sat, 11 Jun 2011 16:47:38 +0200
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Subject: [PATCH 01/14] bcma: move parsing of EEPROM into own function.
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Move the parsing of the EEPROM data in scan function for one core into
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an own function. Now we are able to use it in some other scan function
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as well.
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Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
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---
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drivers/bcma/scan.c | 230 ++++++++++++++++++++++++++-------------------------
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1 files changed, 118 insertions(+), 112 deletions(-)
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--- a/drivers/bcma/scan.c
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+++ b/drivers/bcma/scan.c
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@@ -200,16 +200,124 @@ static s32 bcma_erom_get_addr_desc(struc
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return addrl;
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}
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+static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
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+ struct bcma_device *core)
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+{
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+ s32 tmp;
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+ u8 i, j;
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+ s32 cia, cib;
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+ u8 ports[2], wrappers[2];
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+
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+ /* get CIs */
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+ cia = bcma_erom_get_ci(bus, eromptr);
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+ if (cia < 0) {
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+ bcma_erom_push_ent(eromptr);
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+ if (bcma_erom_is_end(bus, eromptr))
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+ return -ESPIPE;
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+ return -EILSEQ;
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+ }
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+ cib = bcma_erom_get_ci(bus, eromptr);
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+ if (cib < 0)
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+ return -EILSEQ;
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+
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+ /* parse CIs */
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+ core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
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+ core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
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+ core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
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+ ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
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+ ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
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+ wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
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+ wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
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+ core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
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+
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+ if (((core->id.manuf == BCMA_MANUF_ARM) &&
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+ (core->id.id == 0xFFF)) ||
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+ (ports[1] == 0)) {
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+ bcma_erom_skip_component(bus, eromptr);
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+ return -ENXIO;
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+ }
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+
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+ /* check if component is a core at all */
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+ if (wrappers[0] + wrappers[1] == 0) {
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+ /* we could save addrl of the router
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+ if (cid == BCMA_CORE_OOB_ROUTER)
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+ */
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+ bcma_erom_skip_component(bus, eromptr);
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+ return -ENXIO;
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+ }
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+
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+ if (bcma_erom_is_bridge(bus, eromptr)) {
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+ bcma_erom_skip_component(bus, eromptr);
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+ return -ENXIO;
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+ }
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+
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+ /* get & parse master ports */
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+ for (i = 0; i < ports[0]; i++) {
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+ u32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
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+ if (mst_port_d < 0)
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+ return -EILSEQ;
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+ }
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+
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+ /* get & parse slave ports */
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+ for (i = 0; i < ports[1]; i++) {
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+ for (j = 0; ; j++) {
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+ tmp = bcma_erom_get_addr_desc(bus, eromptr,
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+ SCAN_ADDR_TYPE_SLAVE, i);
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+ if (tmp < 0) {
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+ /* no more entries for port _i_ */
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+ /* pr_debug("erom: slave port %d "
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+ * "has %d descriptors\n", i, j); */
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+ break;
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+ } else {
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+ if (i == 0 && j == 0)
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+ core->addr = tmp;
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+ }
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+ }
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+ }
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+
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+ /* get & parse master wrappers */
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+ for (i = 0; i < wrappers[0]; i++) {
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+ for (j = 0; ; j++) {
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+ tmp = bcma_erom_get_addr_desc(bus, eromptr,
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+ SCAN_ADDR_TYPE_MWRAP, i);
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+ if (tmp < 0) {
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+ /* no more entries for port _i_ */
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+ /* pr_debug("erom: master wrapper %d "
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+ * "has %d descriptors\n", i, j); */
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+ break;
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+ } else {
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+ if (i == 0 && j == 0)
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+ core->wrap = tmp;
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+ }
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+ }
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+ }
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+
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+ /* get & parse slave wrappers */
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+ for (i = 0; i < wrappers[1]; i++) {
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+ u8 hack = (ports[1] == 1) ? 0 : 1;
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+ for (j = 0; ; j++) {
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+ tmp = bcma_erom_get_addr_desc(bus, eromptr,
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+ SCAN_ADDR_TYPE_SWRAP, i + hack);
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+ if (tmp < 0) {
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+ /* no more entries for port _i_ */
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+ /* pr_debug("erom: master wrapper %d "
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+ * has %d descriptors\n", i, j); */
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+ break;
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+ } else {
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+ if (wrappers[0] == 0 && !i && !j)
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+ core->wrap = tmp;
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+ }
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+ }
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+ }
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+ return 0;
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+}
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+
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int bcma_bus_scan(struct bcma_bus *bus)
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{
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u32 erombase;
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u32 __iomem *eromptr, *eromend;
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- s32 cia, cib;
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- u8 ports[2], wrappers[2];
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-
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s32 tmp;
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- u8 i, j;
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int err;
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@@ -236,112 +344,13 @@ int bcma_bus_scan(struct bcma_bus *bus)
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INIT_LIST_HEAD(&core->list);
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core->bus = bus;
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- /* get CIs */
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- cia = bcma_erom_get_ci(bus, &eromptr);
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- if (cia < 0) {
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- bcma_erom_push_ent(&eromptr);
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- if (bcma_erom_is_end(bus, &eromptr))
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- break;
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- err= -EILSEQ;
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- goto out;
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- }
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- cib = bcma_erom_get_ci(bus, &eromptr);
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- if (cib < 0) {
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- err= -EILSEQ;
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- goto out;
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- }
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-
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- /* parse CIs */
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- core->id.class = (cia & SCAN_CIA_CLASS) >> SCAN_CIA_CLASS_SHIFT;
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- core->id.id = (cia & SCAN_CIA_ID) >> SCAN_CIA_ID_SHIFT;
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- core->id.manuf = (cia & SCAN_CIA_MANUF) >> SCAN_CIA_MANUF_SHIFT;
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- ports[0] = (cib & SCAN_CIB_NMP) >> SCAN_CIB_NMP_SHIFT;
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- ports[1] = (cib & SCAN_CIB_NSP) >> SCAN_CIB_NSP_SHIFT;
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- wrappers[0] = (cib & SCAN_CIB_NMW) >> SCAN_CIB_NMW_SHIFT;
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- wrappers[1] = (cib & SCAN_CIB_NSW) >> SCAN_CIB_NSW_SHIFT;
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- core->id.rev = (cib & SCAN_CIB_REV) >> SCAN_CIB_REV_SHIFT;
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-
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- if (((core->id.manuf == BCMA_MANUF_ARM) &&
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- (core->id.id == 0xFFF)) ||
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- (ports[1] == 0)) {
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- bcma_erom_skip_component(bus, &eromptr);
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+ err = bcma_get_next_core(bus, &eromptr, core);
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+ if (err == -ENXIO)
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continue;
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- }
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-
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- /* check if component is a core at all */
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- if (wrappers[0] + wrappers[1] == 0) {
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- /* we could save addrl of the router
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- if (cid == BCMA_CORE_OOB_ROUTER)
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- */
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- bcma_erom_skip_component(bus, &eromptr);
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- continue;
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- }
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-
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- if (bcma_erom_is_bridge(bus, &eromptr)) {
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- bcma_erom_skip_component(bus, &eromptr);
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- continue;
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- }
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-
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- /* get & parse master ports */
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- for (i = 0; i < ports[0]; i++) {
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- u32 mst_port_d = bcma_erom_get_mst_port(bus, &eromptr);
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- if (mst_port_d < 0) {
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- err= -EILSEQ;
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- goto out;
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- }
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- }
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-
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- /* get & parse slave ports */
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- for (i = 0; i < ports[1]; i++) {
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- for (j = 0; ; j++) {
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- tmp = bcma_erom_get_addr_desc(bus, &eromptr,
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- SCAN_ADDR_TYPE_SLAVE, i);
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- if (tmp < 0) {
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- /* no more entries for port _i_ */
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- /* pr_debug("erom: slave port %d "
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- * "has %d descriptors\n", i, j); */
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- break;
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- } else {
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- if (i == 0 && j == 0)
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- core->addr = tmp;
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- }
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- }
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- }
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-
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- /* get & parse master wrappers */
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- for (i = 0; i < wrappers[0]; i++) {
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- for (j = 0; ; j++) {
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- tmp = bcma_erom_get_addr_desc(bus, &eromptr,
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- SCAN_ADDR_TYPE_MWRAP, i);
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- if (tmp < 0) {
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- /* no more entries for port _i_ */
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- /* pr_debug("erom: master wrapper %d "
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- * "has %d descriptors\n", i, j); */
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- break;
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- } else {
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- if (i == 0 && j == 0)
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- core->wrap = tmp;
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- }
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- }
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- }
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-
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- /* get & parse slave wrappers */
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- for (i = 0; i < wrappers[1]; i++) {
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- u8 hack = (ports[1] == 1) ? 0 : 1;
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- for (j = 0; ; j++) {
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- tmp = bcma_erom_get_addr_desc(bus, &eromptr,
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- SCAN_ADDR_TYPE_SWRAP, i + hack);
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- if (tmp < 0) {
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- /* no more entries for port _i_ */
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- /* pr_debug("erom: master wrapper %d "
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- * has %d descriptors\n", i, j); */
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- break;
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- } else {
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- if (wrappers[0] == 0 && !i && !j)
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- core->wrap = tmp;
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- }
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- }
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- }
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+ else if (err == -ESPIPE)
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+ break;
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+ else if (err < 0)
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+ return err;
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pr_info("Core %d found: %s "
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"(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
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@@ -351,9 +360,6 @@ int bcma_bus_scan(struct bcma_bus *bus)
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core->core_index = bus->nr_cores++;
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list_add(&core->list, &bus->cores);
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- continue;
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-out:
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- return err;
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}
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return 0;
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